CN111682665A - IE5 three-phase asynchronous motor based on unequal-slot punching sheets of stator and cast-aluminum rotor - Google Patents

IE5 three-phase asynchronous motor based on unequal-slot punching sheets of stator and cast-aluminum rotor Download PDF

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Publication number
CN111682665A
CN111682665A CN202010563172.5A CN202010563172A CN111682665A CN 111682665 A CN111682665 A CN 111682665A CN 202010563172 A CN202010563172 A CN 202010563172A CN 111682665 A CN111682665 A CN 111682665A
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stator
slot
slots
small
stator slots
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CN111682665B (en
Inventor
张文和
马利亚
陈璞
贾建平
武泽永
邓宏伟
张文华
冯建平
贾玉清
刘兰冰
吴栋民
杨创照
郭彩叶
马长爱
程鹏航
刘慧珍
裴良裕
郅焱
温泽鹏
侯志坚
郭宝权
翟希娟
曹改兰
孔祥勇
高秀清
李伟
李军
付红卫
杨大山
张洪荣
余瑾
柳建军
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Shanxi Electric Motor Manufacturing Co ltd
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Shanxi Electric Motor Manufacturing Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • H02K1/265—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/02—Windings characterised by the conductor material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

An IE5 three-phase asynchronous motor based on stator unequal slot punching and cast aluminum rotor, wherein a rotor core of the motor is formed by laminating a plurality of rotor punching, the rotor punching comprises a first substrate in a ring shape, a plurality of closed slots are radially and uniformly arranged on the outer ring surface of the first substrate along the circumferential direction of the first substrate, and aluminum guide strips are cast in the closed slots; the stator core of the motor is formed by laminating a plurality of stator unequal slot punching sheets, each stator unequal slot punching sheet comprises a second substrate in a ring shape, stator slot groups for placing copper wires are radially and uniformly arranged on the inner ring surface of the second substrate along the circumferential direction of the second substrate, the number of stator slot groups of each phase of each pole in each stator slot group is at least three, each stator slot group comprises at least one large stator slot and at least two small stator slots, the large stator slot is arranged in the middle of the stator slot group, and one or more small stator slots are respectively arranged on two sides of the large stator slot; or the stator comprises at least one large stator slot, at least two middle stator slots and at least two small stator slots, wherein the large stator slot is arranged in the middle of the stator slot group, two sides of the large stator slot are respectively provided with one or more small stator slots, one or more middle stator slots are respectively arranged between the large stator slot and the small stator slots, and concave slot wedges or convex slot wedges are plugged in the stator slots for embedding the stator windings.

Description

IE5 three-phase asynchronous motor based on unequal-slot punching sheets of stator and cast-aluminum rotor
Technical Field
The invention belongs to the technical field of three-phase asynchronous motors, and particularly relates to an IE5 three-phase asynchronous motor based on unequal-slot punching sheets of a stator and a cast-aluminum rotor.
Background
The international electrotechnical commission IEC organization issued in 2014 the IEC60034-30-1 "energy efficiency grading standard of single-speed, three-phase cage-type induction motor", which uniformly divides the motor energy efficiency standard into four grades, IE1, IE2, IE3 and IE4, wherein IE4 is the highest efficiency grade at present, i.e., the highest efficiency grade achievable by the current technology.
With the improvement of the requirements of domestic and foreign markets on performance indexes of products, the highest-grade IE4 motor of the current market product is replaced by an IE 5-grade motor. The target value for IE5 was determined for losses reduced by about 20% based on the level of IE 4. However, the IE5 efficiency level motor technology is difficult to realize, and at present, no relevant product standard and practical achievement exist at home and abroad. Some motor manufacturers try to adopt measures such as increasing the outer diameter of a stator punching sheet, increasing the groove area of the stator punching sheet, increasing the amount of copper used for a stator winding, increasing the length of a stator core, increasing the length of a motor base and the like on the basis of an IE4 motor, and adopt measures such as a cast copper rotor and the like to meet performance indexes of the IE5 motor by enlarging the volume of the motor and increasing the material cost. However, it is obvious that such an attempt will increase the cost of the product and is not in line with the current energy saving and consumption reduction objectives.
Disclosure of Invention
The invention aims to draw the IE5 efficiency level, provides an innovative scheme in the aspects of design technology, process realization and the like, and achieves the IE5 efficiency level by effectively reducing the stray loss and the rotor copper loss of a three-phase asynchronous motor on the premise of keeping the economy, thereby innovatively providing the IE5 three-phase asynchronous motor based on unequal stator slot punching sheets and cast aluminum rotors.
The invention relates to an IE5 three-phase asynchronous motor based on unequal-slot punching sheets of a stator and a cast-aluminum rotor, which comprises a rotating shaft, a front end cover, a bearing, a junction box, a stator, a rotor, a motor base, a rear end cover, a fan and a fan cover, wherein the stator and the rotor are all in a cylindrical shape, the rotor is arranged in an inner cavity of the stator, a shaft hole is formed in the center of the rotor, the rotating shaft is arranged in the shaft hole of the rotor in a matching manner, and the rotor is supported on the front end cover and the rear end cover by the bearings arranged:
the rotor mainly comprises a rotor core and a rotor winding, wherein the rotor core is formed by laminating a plurality of rotor punching sheets, each rotor punching sheet comprises a first substrate in a ring shape, a plurality of closed slots are radially and uniformly arranged on the outer ring surface of the first substrate along the circumferential direction of the first substrate, all closed slots of the plurality of rotor punching sheets laminated to form the rotor core form a rotor winding wire slot, and an aluminum guide bar is cast in the rotor winding wire slot through a low-pressure aluminum casting process to form the rotor winding of the rotor;
the stator mainly comprises stator winding and stator core, and stator core is folded by a plurality of stator slot punching that vary and is made, wherein:
the unequal-slot punching sheet of the stator comprises a second substrate in a ring shape, at least six groups of stator slot groups for placing copper wires are radially and uniformly arranged on the inner ring surface of the second substrate along the circumferential direction of the second substrate, the number of the stator slot groups of each pole and each phase in each group of stator slot groups is at least three, and the number and the distribution of the stator slots are in one of the following forms: (1) each phase of stator slot in each group of stator slot groups comprises at least one large stator slot and at least two small stator slots, the large stator slot is arranged in the middle of the stator slot group, two sides of the large stator slot are respectively provided with one or more small stator slots, and the small stator slots on two sides of the large stator slot are symmetrically arranged relative to the large stator slot; or (2) the stator slots of each pole and each phase in each group of stator slot groups comprise at least one large stator slot, at least two middle stator slots and at least two small stator slots, the large stator slot is arranged in the middle of the stator slot group, two sides of the large stator slot are respectively provided with one or more small stator slots, one or more middle stator slots are respectively arranged between the large stator slot and the small stator slots, and the small stator slots and the middle stator slots on two sides of the large stator slot are respectively symmetrically arranged relative to the large stator slot;
the area of the small stator slot is 80% -95% of the area of the large stator slot, the area of the middle stator slot is between the area of the small stator slot and the area of the large stator slot, and the central angles between the adjacent large stator slot, the middle stator slot and the small stator slot are equal;
the large stator slot, the middle stator slot and the small stator slot are semi-closed slots and comprise a rectangular slot, a first isosceles trapezoid slot, a second isosceles trapezoid slot and a semicircular slot, one end of the second substrate, close to the inner circular ring surface, is set to be the rectangular slot, the width of the rectangular slot, which limits the width of the notch of the stator punching sheet, is 2.5-4.2 mm, the height of the rectangular slot, which limits the notch height of the stator punching sheet, is 0.9-2.0 mm, the second isosceles trapezoid slot is arranged at one end, which is far away from the center of the second substrate, of the first isosceles trapezoid slot, the upper bottom edge of the first isosceles trapezoid slot is collinear with the long edge of the rectangular slot, the lower bottom edge of the first isosceles trapezoid slot is collinear with the upper bottom edge of the second isosceles trapezoid slot, the width of the lower bottom edge of the first isosceles trapezoid slot, which limits the width of the groove shoulder of the stator punching sheet, is 5-10 mm, the included angle between the bevel edge and the lower bottom edge of the first isosceles trapezoid slot, the width of the lower bottom edge of the second-class waist trapezoidal groove is 8-15 mm, the height of the second-class waist trapezoidal groove is 12-40 mm, the semicircular groove is arranged at the position of the lower bottom edge of the second-class waist trapezoidal groove, and the diameter of the semicircular groove is equal to the width of the lower bottom edge of the second-class waist trapezoidal groove;
all large stator slots, middle stator slots and small stator slots of a plurality of stator unequal slot punching sheets which are laminated to form a stator core respectively form a stator winding large slot, a stator winding middle slot and a stator winding small slot, a stator winding made of copper wires is embedded in the stator winding large slot, the stator winding middle slot and the stator winding small slot, and a concave slot wedge or a convex slot wedge is plugged in the stator winding large slot, the stator winding middle slot and the stator winding small slot after the stator winding is embedded, wherein the concave slot wedge comprises a rectangular main body part, a groove part arranged on the bottom surface of the rectangular main body part and oblique angle parts positioned on two sides of the groove part, the width of the rectangular main body part of the concave slot wedge is 0.7mm smaller than the width of a stator punching sheet slot shoulder, and the included angle between the oblique edge of the oblique angle part of the concave slot wedge and the bottom surface of the rectangular main body part of the concave slot wedge is equal to, the width of the groove part of the concave slot wedge is the same as the width of the notch of the stator punching sheet, and the height of the rectangular main body part of the concave slot wedge is 1.5-2 mm; the convex slot wedge includes the rectangle main part, the isosceles trapezoid portion of setting in rectangle main part bottom surface and follow the outstanding lug of isosceles trapezoid portion, the width of the rectangle main part of convex slot wedge is 1 ~ 3mm less than stator punching sheet groove shoulder width, the width of the lug of convex slot wedge is 0.1mm less than stator punching sheet notch width, the height ratio stator punching sheet notch height of the lug of convex slot wedge is 0.3mm less, the hypotenuse of the isosceles trapezoid portion of convex slot wedge and the contained angle between the rectangle main part bottom surface of convex slot wedge equal stator punching sheet notch angle.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole and per phase in each group of stator slots is three, including one large stator slot and two small stator slots, and the distribution of the large stator slot and the small stator slot is: a large stator slot is arranged in the middle of the stator slot group, two sides of the large stator slot are respectively provided with a small stator slot, and the small stator slot on one side of the large stator slot and the small stator slot on the other side of the large stator slot are symmetrically arranged relative to the large stator slot in the middle.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole and per phase in each group of stator slots is four, and the stator slots include two large stator slots and two small stator slots, and the distribution of the large stator slots and the small stator slots is: the two large stator slots are arranged in the middle of the stator slot group, two sides of the two large stator slots are respectively provided with a small stator slot, and the small stator slot on one side of the two large stator slots and the small stator slot on the other side of the two large stator slots are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is five, and the number and distribution of the large stator slots and the small stator slots are in one or more of the following forms:
(1) each pole and each phase of five stator slots in each group of stator slot groups comprise a large stator slot and four small stator slots, and the large stator slot and the small stator slots are distributed as follows: the large stator slot is arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the large stator slot, and the two small stator slots on one side of the large stator slot and the two small stator slots on the other side of the large stator slot are symmetrically arranged relative to the large stator slot in the middle;
(2) each pole and each phase of five stator slots in each group of stator slot groups comprise three large stator slots and two small stator slots, and the large stator slots and the small stator slots are distributed as follows: the three large stator slots are arranged in the middle of the stator slot group, two sides of the three large stator slots are respectively provided with a small stator slot, and the small stator slot on one side of the three large stator slots and the small stator slot on the other side of the three large stator slots are symmetrically arranged relative to the large stator slot in the middle.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is six, and the number and distribution of the large stator slots and the small stator slots are in one or more of the following forms:
(1) each group of stator slot groups comprises two large stator slots and four small stator slots, wherein each pole of each phase of the six stator slots comprises the following stator slots: the two large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the two large stator slots, and the two small stator slots on one side of the two large stator slots and the two small stator slots on the other side of the two large stator slots are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate;
(2) each group of stator slot groups comprises four large stator slots and two small stator slots, wherein each pole of each phase of the six stator slots comprises the following distribution: the four large stator slots are arranged in the middle of the stator slot group, two sides of the four large stator slots are respectively provided with a small stator slot, and the small stator slot on one side of the four large stator slots and the small stator slot on the other side of the four large stator slots are symmetrical about the central line of the four large stator slots in the circumferential direction of the second substrate.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is seven, and the number and distribution of the large stator slots and the small stator slots are in one or more of the following forms:
(1) each pole of each group of stator slot groups comprises seven stator slots of each phase, wherein each pole of each group of stator slots comprises a large stator slot and six small stator slots, and the large stator slot and the small stator slot are distributed as follows: the large stator slot is arranged in the middle of the stator slot group, three small stator slots are respectively arranged on two sides of the large stator slot, and the three small stator slots on one side of the large stator slot and the three small stator slots on the other side of the large stator slot are symmetrically arranged relative to the large stator slot in the middle;
(2) each pole and each phase of seven stator slots in each group of stator slot groups comprise three large stator slots and four small stator slots, and the large stator slots and the small stator slots are distributed as follows: the three large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the three large stator slots, and the two small stator slots on one side of the three large stator slots and the two small stator slots on the other side of the three large stator slots are symmetrically arranged relative to the large stator slot in the middle;
(3) each pole and each phase of seven stator slots in each group of stator slot groups comprise five large stator slots and two small stator slots, and the large stator slots and the small stator slots are distributed as follows: five large stator slots are arranged in the middle of the stator slot group, two sides of the five large stator slots are respectively provided with a small stator slot, and the small stator slot on one side of the five large stator slots and the small stator slot on the other side of the five large stator slots are symmetrically arranged relative to the large stator slot in the middle.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is eight, and the number and distribution of the large stator slots and the small stator slots are in one or more of the following forms:
(1) each pole and each phase of eight stator slots in each group of stator slot groups comprise two large stator slots and six small stator slots, and the large stator slots and the small stator slots are distributed as follows: the two large stator slots are arranged in the middle of the stator slot group, three small stator slots are respectively arranged on two sides of the two large stator slots, and the three small stator slots on one side of the two large stator slots and the three small stator slots on the other side of the two large stator slots are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate;
(2) each pole and each phase of eight stator slots in each group of stator slot groups comprise four large stator slots and four small stator slots, and the large stator slots and the small stator slots are distributed as follows: the four large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the four large stator slots, and the two small stator slots on one side of the four large stator slots and the two small stator slots on the other side of the four large stator slots are symmetrical about the central line of the four large stator slots in the circumferential direction of the second substrate;
(3) each pole and each phase of eight stator slots in each group of stator slot groups comprise six large stator slots and two small stator slots, and the large stator slots and the small stator slots are distributed as follows: the six large stator slots are arranged in the middle of the stator slot group, two sides of the six large stator slots are respectively provided with a small stator slot, and the small stator slots on one side of the six large stator slots and the small stator slots on the other side of the six large stator slots are symmetrical about the central line of the six large stator slots in the circumferential direction of the second substrate.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole and per phase in each group of stator slots is nine, and the number and distribution of the large stator slots and the small stator slots are one or more of the following forms:
(1) each pole of each group of stator slot groups comprises nine stator slots, each phase of each pole comprises a large stator slot and eight small stator slots, and the distribution of the large stator slot and the small stator slot is as follows: the large stator slot is arranged in the middle of the stator slot group, four small stator slots are respectively arranged on two sides of the large stator slot, and the four small stator slots on one side of the large stator slot and the four small stator slots on the other side of the large stator slot are symmetrically arranged relative to the large stator slot in the middle;
(2) each pole and each phase of nine stator slots in each group of stator slot groups comprise three large stator slots and six small stator slots, and the distribution of the large stator slots and the small stator slots is as follows: the three large stator slots are arranged in the middle of the stator slot group, three small stator slots are respectively arranged on two sides of the three large stator slots, and the three small stator slots on one side of the three large stator slots and the three small stator slots on the other side of the three large stator slots are symmetrically arranged relative to the large stator slot in the middle;
(3) each pole and each phase of nine stator slots in each group of stator slot groups comprise five large stator slots and four small stator slots, and the distribution of the large stator slots and the small stator slots is as follows: the five large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the five large stator slots, and the two small stator slots on one side of the five large stator slots and the two small stator slots on the other side of the five large stator slots are symmetrically arranged relative to the large stator slot in the middle;
(4) the nine stator slots per pole and per phase in each group of stator slot groups comprise seven large stator slots and two small stator slots, and the distribution of the large stator slots and the small stator slots is as follows: seven large stator slots are arranged in the middle of the stator slot group, two sides of the seven large stator slots are respectively provided with a small stator slot, and the small stator slot on one side of the seven large stator slots and the small stator slot on the other side of the seven large stator slots are symmetrically arranged relative to the large stator slot in the middle.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole and per phase in each group of stator slots is five, and the stator slots comprise a large stator slot, two middle stator slots and two small stator slots, and the distribution of the large stator slot, the middle stator slot and the small stator slot is as follows: the large stator slot is arranged in the middle of the stator slot group, two sides of the large stator slot are respectively provided with a small stator slot, a middle stator slot is arranged between the large stator slot and the small stator slot, the small stator slot on one side of the large stator slot and the small stator slot on the other side of the large stator slot are symmetrical about the large stator slot in the middle position, and the middle stator slot on one side of the large stator slot and the middle stator slot on the other side of the large stator slot are symmetrical about the large stator slot in the middle position.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole and per phase in each group of stator slots is six, and the motor comprises two large stator slots, two middle stator slots and two small stator slots, wherein the distribution of the large stator slots, the middle stator slots and the small stator slots is as follows: the two large stator slots are arranged in the middle of the stator slot group, two sides of the two large stator slots are respectively provided with a small stator slot, a middle stator slot is arranged between the large stator slot and the small stator slot, the small stator slot on one side of the two large stator slots and the small stator slot on the other side of the two large stator slots are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate, and the middle stator slot on one side of the two large stator slots and the middle stator slot on the other side of the two large stator slots are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is seven, and the number and distribution of the large stator slots, the medium stator slots and the small stator slots are in one or more of the following forms:
(1) each pole and each phase of seven stator slots in each group of stator slot groups comprise a large stator slot, two middle stator slots and four small stator slots, and the large stator slot, the middle stator slot and the small stator slots are distributed as follows: the large stator slot is arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the large stator slot, a middle stator slot is respectively arranged between the large stator slot and the small stator slot, the two small stator slots on one side of the large stator slot and the two small stator slots on the other side of the large stator slot are symmetrical about the large stator slot in the middle position, and the middle stator slot on one side of the large stator slot and the middle stator slot on the other side of the large stator slot are symmetrical about the large stator slot in the middle position;
(2) each pole and each phase of seven stator slots in each group of stator slot groups comprise three large stator slots, two middle stator slots and two small stator slots, and the large stator slots, the middle stator slots and the small stator slots are distributed as follows: the three large stator slots are arranged in the middle of the stator slot group, two sides of the three large stator slots are respectively provided with a small stator slot, a middle stator slot is arranged between the large stator slot and the small stator slot, the small stator slot on one side of the three large stator slots and the small stator slot on the other side of the three large stator slots are symmetrical about the large stator slot in the middle, and the middle stator slot on one side of the three large stator slots and the middle stator slot on the other side of the three large stator slots are symmetrical about the large stator slot in the middle;
(3) each pole and each phase of seven stator slots in each group of stator slot groups comprise a large stator slot, four middle stator slots and two small stator slots, and the large stator slot, the middle stator slot and the small stator slots are distributed as follows: the large stator slot is arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the large stator slot, two middle stator slots are respectively arranged between the large stator slot and the small stator slots, the small stator slot on one side of the large stator slot and the small stator slot on the other side of the large stator slot are symmetrical about the large stator slot in the middle position, and the two middle stator slots on one side of the large stator slot and the two middle stator slots on the other side of the large stator slot are symmetrical about the large stator slot in the middle position.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is eight, and the number and distribution of the large stator slots, the medium stator slots and the small stator slots are in one or more of the following forms:
(1) each pole and each phase of eight stator slots in each group of stator slot groups comprise four large stator slots, two middle stator slots and two small stator slots, and the large stator slots, the middle stator slots and the small stator slots are distributed as follows: the four large stator slots are arranged in the middle of the stator slot group, two sides of the four large stator slots are respectively provided with a small stator slot, a middle stator slot is arranged between the large stator slot and the small stator slot, the small stator slot on one side of the four large stator slots and the small stator slot on the other side of the four large stator slots are symmetrical about the central line of the four large stator slots in the circumferential direction of the second substrate, and the middle stator slot on one side of the four large stator slots and the middle stator slot on the other side of the four large stator slots are symmetrical about the central line of the four large stator slots in the circumferential direction of the second substrate;
(2) each pole and each phase of eight stator slots in each group of stator slot groups comprise two large stator slots, four middle stator slots and two small stator slots, and the large stator slots, the middle stator slots and the small stator slots are distributed as follows: the two large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of each large stator slot, two middle stator slots are respectively arranged between each large stator slot and each small stator slot, the small stator slots on one side of each large stator slot and the small stator slots on the other side of each large stator slot are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate, and the two middle stator slots on one side of each large stator slot and the two middle stator slots on the other side of each large stator slot are symmetrical about the central line of the two large stator slots in the circumferential direction of the second substrate.
Preferably, in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the present invention, the number of stator slots per pole per phase in each group of stator slots is nine, and the number and distribution of the large stator slots, the medium stator slots and the small stator slots are one or more of the following forms:
(1) each pole of each group of stator slot groups comprises nine stator slots, each phase of each pole comprises a large stator slot, two middle stator slots and six small stator slots, and the distribution of the large stator slot, the middle stator slot and the small stator slots is as follows: the large stator slot is arranged in the middle of the stator slot group, three small stator slots are respectively arranged on two sides of the large stator slot, a middle stator slot is respectively arranged between the large stator slot and the small stator slot, the three small stator slots on one side of the large stator slot and the three small stator slots on the other side of the large stator slot are symmetrical about the large stator slot in the middle position, and the middle stator slot on one side of the large stator slot and the middle stator slot on the other side of the large stator slot are symmetrical about the large stator slot in the middle position;
(2) each pole of each group of stator slot groups comprises nine stator slots, each phase of each pole comprises three large stator slots, two middle stator slots and four small stator slots, and the distribution of the large stator slots, the middle stator slots and the small stator slots is as follows: the three large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the three large stator slots, a middle stator slot is respectively arranged between the large stator slot and the small stator slots, the two small stator slots on one side of the three large stator slots and the two small stator slots on the other side of the three large stator slots are symmetrical about the large stator slot in the middle position, and the middle stator slot on one side of the three large stator slots and the middle stator slot on the other side of the three large stator slots are symmetrical about the large stator slot in the middle position;
(3) each pole of each group of stator slot groups comprises nine large stator slots, two middle stator slots and two small stator slots, and the distribution of the large stator slots, the middle stator slots and the small stator slots is as follows: five large stator slots are arranged in the middle of the stator slot group, two sides of the five large stator slots are respectively provided with a small stator slot, a middle stator slot is arranged between the large stator slot and the small stator slot, the small stator slots on one side of the five large stator slots and the small stator slots on the other side of the five large stator slots are symmetrical about the large stator slot at the middle position, and the middle stator slot on one side of the five large stator slots and the middle stator slot on the other side of the five large stator slots are symmetrical about the large stator slot at the middle position;
(4) each pole of each group of stator slot groups comprises nine stator slots, each phase of each pole comprises a large stator slot, four middle stator slots and four small stator slots, and the distribution of the large stator slot, the middle stator slot and the small stator slots is as follows: the large stator slot is arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the large stator slot, two middle stator slots are respectively arranged between the large stator slot and the small stator slots, the two small stator slots on one side of the large stator slot and the two small stator slots on the other side of the large stator slot are symmetrical about the large stator slot in the middle position, and the two middle stator slots on one side of the large stator slot and the two middle stator slots on the other side of the large stator slot are symmetrical about the large stator slot in the middle position;
(5) each pole of each group of stator slot groups comprises nine stator slots, each phase of each pole comprises three large stator slots, four middle stator slots and two small stator slots, and the distribution of the large stator slots, the middle stator slots and the small stator slots is as follows: the three large stator slots are arranged in the middle of the stator slot group, two sides of the three large stator slots are respectively provided with a small stator slot, two middle stator slots are respectively arranged between the large stator slot and the small stator slots, the small stator slot on one side of the three large stator slots and the small stator slot on the other side of the three large stator slots are symmetrical about the large stator slot at the middle position, and the two middle stator slots on one side of the three large stator slots and the two middle stator slots on the other side of the three large stator slots are symmetrical about the large stator slot at the middle position;
(6) each pole of each group of stator slot groups comprises nine stator slots, each phase of each pole comprises a large stator slot, six middle stator slots and two small stator slots, and the distribution of the large stator slot, the middle stator slot and the small stator slots is as follows: the large stator slot is arranged in the middle of the stator slot group, two sides of the large stator slot are respectively provided with a small stator slot, three middle stator slots are respectively arranged between the large stator slot and the small stator slot, the small stator slot on one side of the large stator slot and the small stator slot on the other side of the large stator slot are symmetrical about the large stator slot in the middle position, and the three middle stator slots on one side of the large stator slot and the three middle stator slots on the other side of the large stator slot are symmetrical about the large stator slot in the middle position.
Preferably, in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor, the distance between the adjacent large stator slots along the circumferential direction of the second substrate, the distance between the adjacent middle stator slots along the circumferential direction of the second substrate, the distance between the adjacent small stator slots along the circumferential direction of the second substrate, the distance between the adjacent large stator slots and the middle stator slots along the circumferential direction of the second substrate, and the distance between the adjacent middle stator slots and the small stator slots along the circumferential direction of the second substrate are all equal.
Preferably, in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor, all the large stator slots have the same slot shape and the same area, all the middle stator slots have the same slot shape and the same area, and all the small stator slots have the same slot shape and the same area.
Preferably, in the IE5 three-phase asynchronous motor based on unequal-slot punching of a stator and a cast-aluminum rotor, 8-16 cramp slots for installing cramps are uniformly arranged on the outer annular surface of the second substrate along the circumferential direction of the second substrate, the lower bottom edges of the cramp slots are arranged as straight lines, the upper bottom edges of the cramp slots naturally open along the circumferential direction of the second substrate, a piece arranging slot is arranged at the bottom of any one of the cramp slots, and the piece arranging slot is rectangular or trapezoidal.
Preferably, in the IE5 three-phase asynchronous motor based on the unequal-slot punching sheet of the stator and the cast-aluminum rotor, the width of the cramp slot is 14-25 mm, the height of the cramp slot is 3-5 mm, and the included angle between the oblique edge of the cramp slot and the bottom edge is 15-25 degrees.
Compared with the prior art, the invention has the beneficial effects that:
1. in the IE5 three-phase asynchronous motor based on the unequal-slot punching sheet of the stator and the cast-aluminum rotor, the number of the stator slots of each pole and each phase of the unequal-slot punching sheet of the stator can be three, four, five, six, seven, eight or nine, the stator slots comprise large stator slots, middle stator slots and small stator slots with unequal areas, the wire embedding manufacturability of unequal-turn coils is optimized, the slot filling rate in each stator slot is basically consistent, the wire embedding quality is effectively improved, the IE5 three-phase asynchronous motor has great significance for improving the efficiency of the motor, improving the starting and reducing the noise of the motor, greatly improving the utilization rate of the stator slots, improving the distribution mechanism of the magnetic density of the yoke part of the punching sheet of the stator, reducing the stray loss of the motor, improving the starting performance of the motor, reducing the temperature rise of the motor, improving the efficiency of the motor and saving the overall cost of the motor;
2. in the IE5 three-phase asynchronous motor based on the unequal-slot punching sheets of the stator and the cast-aluminum rotor, aluminum guide bars are cast in a rotor winding wire slot formed by all closed slots of a plurality of laminated rotor punching sheets forming a rotor core through a low-pressure cast-aluminum process, and the cast aluminum guide bars form a rotor winding of the rotor. The use of cast aluminum rotors results in a significant reduction in motor rotor copper losses and stray losses, for example, at least 15% less copper losses and on average 25% more stray losses compared to conventional motors.
3. In the IE5 three-phase asynchronous motor based on the unequal slot punching sheet of the stator and the cast-aluminum rotor, a concave slot wedge or a convex slot wedge is used for plugging the slot opening of the stator, and for the concave slot wedge, the matching part of the concave slot wedge 30 and the rotor is a hollow groove, so that the axial ventilation effect between the stator and the rotor can be improved while the electrical reliability and the heat conduction capability are improved, the temperature rise of the motor is obviously reduced, the slot fullness rate can be improved, and the integrity of a winding is enhanced; for the convex slot wedge, the arrangement of the convex block equivalently reduces the width of the slot opening, thereby weakening the cogging effect, reducing the surface loss and the pulsating loss generated on the stator by the rotor core, obviously improving the efficiency of the motor and being particularly suitable for a high-speed and high-efficiency motor.
According to practical detection, by utilizing the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor, the copper is saved by 0.1-0.25 kg/kW, and the motor efficiency reaches IEC60034-30-1 published by the IEC organization of the International electrotechnical Commission: 2014 "energy efficiency rating of single-speed, three-phase cage induction motor" under the IE5 energy efficiency rating standard.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic diagram of the overall structure of an IE5 three-phase asynchronous motor based on unequal-slot punching of a stator and a cast aluminum rotor.
Fig. 2 is a schematic structural diagram of a cast aluminum rotor in an IE5 three-phase asynchronous motor based on unequal slot punching of a stator and the cast aluminum rotor.
Fig. 3 is a schematic structural diagram of a rotor punching sheet used in an IE5 three-phase asynchronous motor based on a stator unequal slot punching sheet and a cast aluminum rotor.
Fig. 4 is a schematic structural diagram of a stator in an IE5 three-phase asynchronous motor based on unequal slot punching of the stator and a cast aluminum rotor.
Fig. 5 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 1 of the present invention.
Fig. 6 is a schematic diagram showing a comparative structure of a groove shape of the enlarged and overlapped part I and part II in fig. 5, in which a two-dot chain line is a groove-shaped contour line of a small stator groove and a solid line is a groove-shaped contour line of a large stator groove.
FIG. 7 is an enlarged view of a portion III of FIG. 5, showing the tab slot and the tab slot.
Fig. 8 is a schematic view of the installation state of the concave slot wedge in the stator slot used in the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast aluminum rotor.
Fig. 9 is a schematic view of the structure of the concave wedge in fig. 8.
Fig. 10 is a schematic view of the installation state of the convex slot wedge in the stator slot used in the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast aluminum rotor.
Fig. 11 is a schematic view of the structure of the convex wedge of fig. 10.
Fig. 12 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 2 of the present invention.
Fig. 13 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 3 of the present invention.
Fig. 14 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 4 of the present invention.
Fig. 15 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 5 of the present invention.
Fig. 16 is a schematic diagram of a comparative groove structure of the parts I, II and III in fig. 15, which are partially enlarged and superimposed, wherein the two-dot chain line is a small stator groove profile line, the dotted line is a middle stator groove profile line, and the solid line is a large stator groove profile line.
Fig. 17 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor according to embodiment 6 of the present invention.
Fig. 18 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 7 of the present invention.
Fig. 19 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 8 of the present invention.
Fig. 20 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor in embodiment 9 of the present invention.
Fig. 21 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor in embodiment 10 of the present invention.
Fig. 22 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor according to embodiment 11 of the present invention.
Fig. 23 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 12 of the present invention.
Fig. 24 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor according to embodiment 13 of the present invention.
Fig. 25 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 14 of the present invention.
Fig. 26 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor according to embodiment 15 of the present invention.
Fig. 27 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast aluminum rotor according to embodiment 16 of the present invention.
Fig. 28 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor according to embodiment 17 of the present invention.
Fig. 29 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor according to embodiment 18 of the present invention.
Fig. 30 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor according to embodiment 19 of the present invention.
Fig. 31 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor according to embodiment 20 of the present invention.
Fig. 32 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor according to embodiment 21 of the present invention.
Fig. 33 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 22 of the present invention.
Fig. 34 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor according to embodiment 23 of the present invention.
Fig. 35 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 24 of the present invention.
Fig. 36 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 25 of the present invention.
Fig. 37 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor in embodiment 26 of the present invention.
Fig. 38 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheets and a cast aluminum rotor in embodiment 27 of the present invention.
Fig. 39 is a schematic structural diagram of a stator unequal slot punching sheet used in an IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and a cast-aluminum rotor in embodiment 28 of the present invention.
Fig. 40 is a schematic structural diagram of stator unequal slot punching sheets used in an IE5 three-phase asynchronous motor based on stator unequal slot punching sheets and a cast aluminum rotor in embodiment 29 of the present invention.
Description of reference numerals:
100-rotating shaft, 101-front end cover, 102-bearing, 103-junction box, 104-stator, 105-rotor, 106-motor base, 107-rear end cover, 108-fan and 109-fan cover; 1051-rotor core, 1052-rotor winding, 11-first substrate, 12-closed slot, 13-aluminum conducting bar; 1041-stator winding, 1042-stator core, 1-second substrate, 2-stator slot group, 21-rectangular slot, 22-first isosceles trapezoid slot, 23-second isosceles trapezoid slot, 24-semicircular slot, 25-small stator slot, 26-large stator slot, 27-middle stator slot, 3-clip slot, 4-piece arranging slot, 30-concave slot wedge, 301-rectangular main body part, 302-groove part, 303-bevel part, 40-convex slot wedge, 401-rectangular main body part, 402-isosceles trapezoid part, 403-convex block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2, 3 and 4, the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor of the invention comprises a rotating shaft 100, a front end cover 101, a bearing 102, a junction box 103, a stator 104, a rotor 105, a motor base 106, a rear end cover 107, a fan 108 and a fan housing 109. The stator 104 and the rotor 105 are both in a cylindrical shape, the rotor 105 is installed in the inner cavity of the stator 104, the center of the rotor 105 is provided with a shaft hole, the rotating shaft 100 is installed in the shaft hole of the rotor 105 in a matching mode, and the rotor 105 is supported on the front end cover 101 and the rear end cover 107 through the bearing 102 installed on the rotating shaft 100.
The rotor 105 mainly comprises a rotor core 1051 and a rotor winding 1052, the rotor core 1051 is formed by laminating a plurality of rotor sheets, the rotor sheets include a first substrate 11 in a circular ring shape, a plurality of closed slots 12, for example, 38-82 closed slots 12, are radially and uniformly arranged on the outer circular ring surface of the first substrate 11 along the circumferential direction of the first substrate 11, all the closed slots 12 of the plurality of rotor sheets laminated to form the rotor core 1051 form a rotor winding wire slot, and an aluminum guide bar 13 is cast in the rotor winding wire slot through a low-pressure aluminum casting process to form the rotor winding 1052 of the rotor 105. The cast aluminum busbar 13 has a very high degree of compactness.
The stator 104 mainly comprises a stator winding 1041 and a stator core 1042, the stator core 1042 is formed by laminating a plurality of unequal stator slot punching sheets, and the stator winding 1041 made of copper wires is embedded in the stator slots of the unequal stator slot punching sheets.
As shown in fig. 5 to 40, the unequal-slot stator laminations used in the IE5 three-phase asynchronous motor based on the unequal-slot stator laminations and the cast-aluminum rotor according to the present invention have two main embodiments under the same inventive concept:
(1) each stator slot group on the stator unequal slot punching sheet comprises a plurality of large stator slots and small stator slots, specifically, the stator unequal slot punching sheet comprises a second substrate 1 in a ring shape, at least six stator slot groups 2 for placing copper wires are radially and uniformly arranged on the inner circular ring surface of the second substrate 1 along the circumferential direction of the second substrate 1, the number of the stator slot groups 2 in each phase of each pole in each stator slot group 2 is three to nine, the stator slot groups comprise at least one large stator slot 26 and at least two small stator slots 25, the area of each small stator slot 25 is 80-95% of the area of each large stator slot 26, and the central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal; the large stator slots 26 and the small stator slots 25 in each stator slot group 2 are distributed as follows: the large stator slot 26 is arranged in the middle of the stator slot group 2, one or more small stator slots 25 are respectively arranged on two sides of the large stator slot 26, and the small stator slots 25 on two sides of the large stator slot 26 are symmetrically arranged relative to the large stator slot 26; the large stator slot 26 and the small stator slot 25 are both semi-closed slots and comprise a rectangular slot 21, a first isosceles trapezoid slot 22, a second isosceles trapezoid slot 23 and a semi-circular slot 24, one end close to the inner circular ring surface of the second substrate 1 is set to be the rectangular slot 21, the width of the rectangular slot 21 limiting the width of the notch of the stator punching sheet is 2.5-4.2 mm, the height of the rectangular slot 21 limiting the notch height of the stator punching sheet is 0.9-2.0 mm, the second isosceles trapezoid slot 23 is arranged at one end, far away from the center of the second substrate 1, of the first isosceles trapezoid slot 22, the upper bottom edge of the first isosceles trapezoid slot 22 and the long edge of the rectangular slot 21 are collinear, the upper bottom edge of the first isosceles trapezoid slot 22 and the upper bottom edge of the second isosceles trapezoid slot 23 are collinear, the width of the lower bottom edge of the first isosceles trapezoid slot 22 limiting the width of the stator groove shoulder is 5-10 mm, the included angle between the lower bottom edge of the first isosceles trapezoid slot 22 limiting the notch angle of the stator punching sheet is 20-30 degrees, the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23 is 8-15 mm, the height of the second isosceles trapezoid-shaped groove 23 is 12-40 mm, the semicircular groove 24 is arranged at the position of the lower bottom edge of the second isosceles trapezoid-shaped groove 23, and the diameter of the semicircular groove 24 is equal to the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23.
(2) Each stator slot group on the stator unequal slot punching sheet comprises a plurality of large stator slots, medium stator slots and small stator slots, specifically, the stator unequal slot punching sheet comprises a circular second substrate 1, at least six groups of stator slot groups 2 for placing copper wires are radially and uniformly arranged on the inner circular ring surface of the second substrate 1 along the circumferential direction of the second substrate 1, the number of the stator slots of each phase in each group of stator slot groups 2 is five to nine, the stator slot groups comprise at least one large stator slot 26, at least two medium stator slots 27 and at least two small stator slots 25, the area of each small stator slot 25 is 80-95% of the area of each large stator slot 26, the area of each medium stator slot 27 is between the area of each small stator slot 25 and the area of each large stator slot 26, and the central angles of the adjacent large stator slot 26, medium stator slot 27 and small stator slot 25 are all equal; the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each stator slot group 2 are distributed as follows: the large stator slot 26 is arranged in the middle of the stator slot group 2, one or more small stator slots 25 are respectively arranged on two sides of the large stator slot 26, one or more middle stator slots 27 are respectively arranged between the large stator slot 26 and the small stator slots 25, and the small stator slots 25 and the middle stator slots 27 on two sides of the large stator slot 26 are respectively symmetrically arranged relative to the large stator slot 26; the large stator slot 26, the middle stator slot 27 and the small stator slot 25 are all semi-closed slots, and comprise a rectangular slot 21, a first isosceles trapezoid-shaped slot 22, a second isosceles trapezoid-shaped slot 23 and a semi-circular slot 24, one end of an inner circular ring surface close to the second substrate 1 is set to be the rectangular slot 21, the width of the rectangular slot 21 limiting the width of a notch of a stator punching sheet is 2.5-4.2 mm, the height of the rectangular slot 21 limiting the height of the notch of the stator punching sheet is 0.9-2.0 mm, the second isosceles trapezoid-shaped slot 23 is arranged at one end, far away from the center of the second substrate 1, of the first isosceles trapezoid-shaped slot 22, the upper bottom edge of the first isosceles trapezoid-shaped slot 22 is collinear with the long edge of the rectangular slot 21, the lower bottom edge of the first isosceles trapezoid-shaped slot 22 is collinear with the upper bottom edge of the second isosceles trapezoid-shaped slot 23, the width of the lower bottom edge of the first isosceles trapezoid-shaped slot 22 limiting the width of a shoulder of the stator punching sheet is 5-10 mm, and the included angle between the first isosceles trapezoid-shaped slot 22 limiting The width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23 is 8-15 mm, the height of the second isosceles trapezoid-shaped groove 23 is 12-40 mm, the semicircular groove 24 is arranged at the position of the lower bottom edge of the second isosceles trapezoid-shaped groove 23, and the diameter of the semicircular groove 24 is equal to the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23.
Herein, two parallel sides of the isosceles trapezoid are referred to as bottom sides, wherein a long bottom side is referred to as a lower bottom side, and a short bottom side is referred to as an upper bottom side, regardless of the arrangement shown in the drawings.
The IE5 three-phase asynchronous motor based on the unequal slot punching sheet and the cast-aluminum rotor of the invention is described in detail below with reference to embodiments, wherein the description of each embodiment is only made for the difference of the IE5 three-phase asynchronous motor based on the unequal slot punching sheet and the cast-aluminum rotor of the stator, and other same structures are not described in detail.
Example 1
As shown in fig. 5, the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 1 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged in a radial manner along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the motor stage number. The number of stator slots per pole and per phase in each stator slot group 2 is three, and the stator slots comprise a large stator slot 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, and two sides of the large stator slot 26 are respectively symmetrically provided with a small stator slot 25, namely, the small stator slot 25 on one side of the large stator slot 26 and the small stator slot 25 on the other side of the large stator slot 26 are symmetrically arranged relative to the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 1 are distributed in a form of small-large-small.
All the large stator slots 26 in one stator unequal slot punching sheet have the same slot shape and area, and all the small stator slots 25 have the same slot shape and area. The area of the small stator slot 25 is 80% -95% of the area of the large stator slot 26. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, i.e., the distances between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
As shown in fig. 6, the basic groove shapes of the large stator groove 26 and the small stator groove 25 are semi-closed pear-shaped grooves, which are beneficial for placing copper wires, and comprise a rectangular groove 21, a first isosceles trapezoidal groove 22, a second isosceles trapezoidal groove 23 and a semi-circular groove 24, wherein one end of the second substrate 1 close to the inner circular ring surface is provided with the rectangular groove 21, the width of the rectangular groove 21 is 2.5-4.2 mm, which limits the width of a notch of a stator punching sheet, and the height of the rectangular groove 21 is 0.9-2.0 mm, which limits the height of the notch of the stator punching sheet; the second isosceles trapezoid-shaped groove 23 is arranged at one end, far away from the center of a circle, of the first isosceles trapezoid-shaped groove 22, the upper bottom edge of the first isosceles trapezoid-shaped groove 22 is collinear with the long edge of the rectangular groove 21, the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is collinear with the upper bottom edge of the second isosceles trapezoid-shaped groove 23, the width of the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is 5-10 mm, the width of a groove shoulder of a stator punching sheet is limited, the included angle between the oblique edge and the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is 20-30 degrees, the notch angle of the stator punching sheet is limited, the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23 is 8-15 mm, and the height of the second isosceles trapezoid-shaped; the semicircular groove 24 is arranged at the position of the lower bottom edge of the second isosceles trapezoid groove 23, and the diameter of the semicircular groove 24 is equal to the width of the lower bottom edge of the second isosceles trapezoid groove 23.
Further, as shown in fig. 5 and 7, 8 to 16 cramp grooves 3 for installing cramps are uniformly arranged on the outer annular surface of the second substrate 1 along the circumferential direction of the second substrate 1, and play a role of fixing an iron core, the cramp grooves 3 are similar to isosceles trapezoids, the lower bottom edges of the cramp grooves 3 are straight lines, the upper bottom edges of the cramp grooves 3 are naturally opened along the circumferential direction of the second substrate 1, the width of the cramp grooves 3 is 14 to 25mm, the height of the cramp grooves 3 is 3 to 5mm, and the included angle between the inclined edges and the bottom edges of the cramp grooves 3 is 15 to 25 degrees. The bottom of any one of the buckle sheet grooves 3 is provided with a sheet arranging groove 4, the sheet arranging groove 4 is rectangular or trapezoidal, the sheet arranging groove 4 is used for laminating the stator core, the punching sheet is consistent in directionality, the width of the upper bottom edge of the sheet arranging groove 4 is 3-4 mm, and the height of the upper bottom edge of the sheet arranging groove 4 is 1.5-4 mm.
In addition, all the large stator slots 26 and the small stator slots 25 of the plurality of stator unequal slot punching sheets which are laminated to form the stator core respectively form a stator winding large slot and a stator winding small slot, a stator winding made of copper wires is embedded in the stator winding large slot and the stator winding small slot, and a concave slot wedge 30 or a convex slot wedge 40 is respectively blocked in the stator winding large slot and the stator winding small slot after the stator winding is embedded.
As shown in fig. 8 and 9, the cross section of the concave slot wedge 30 is concave, and includes a rectangular main body 301, a groove 302 disposed on the bottom surface of the rectangular main body 301, and oblique portions 303 disposed on both sides of the groove 302, a width B of the rectangular main body 301 of the concave slot wedge 30 is smaller than a stator punching sheet shoulder width (i.e., a width of a lower bottom edge of the first isosceles trapezoid-shaped groove 22) by 0.7mm, an included angle α between an oblique edge of the oblique portion 303 of the concave slot wedge 30 and the bottom surface of the rectangular main body 301 of the concave slot wedge 30 is equal to a stator punching sheet notch angle (i.e., an included angle between the oblique edge and the lower bottom edge of the first isosceles trapezoid-shaped groove 22), a width B1 of the groove 302 of the concave slot wedge 30 is equal to the stator punching sheet notch width (i.e., the width of the rectangular groove 21), and a height h of. H in fig. 9 is the total height of the concave wedge 30, determined by the limit of the slot-full rate.
The concave slot wedge 30 is plugged in the stator winding wire slot after the stator winding is embedded, and the matching part of the concave slot wedge 30 and the rotor is a hollow groove, so that the axial ventilation effect between the stator and the rotor can be improved while the electrical reliability and the heat conduction capability are improved, and the temperature rise of the motor is obviously reduced. In addition, when the concave slot wedge 30 is adopted, the slot filling rate is high, and the winding integrity is good. Moreover, the concave slot wedge 30 is low in manufacturing cost and is easy to realize by adopting a drawing mode.
As shown in fig. 10 and 11, the convex wedge 40 includes a rectangular main body 401, an isosceles trapezoid portion 402 disposed on the bottom surface of the rectangular main body 401, and a protrusion 403 protruding from the isosceles trapezoid portion 402, a width B of the rectangular main body 401 of the convex wedge 40 is 1 to 3mm smaller than a stator lamination shoulder width (i.e., a width of a lower base of the first isosceles trapezoid groove 22), a width B1 of the protrusion 403 of the convex wedge 40 is 0.1mm smaller than a stator lamination notch width (i.e., a width of the rectangular groove 21), a height of the protrusion 403 of the convex wedge 40 is 0.3mm smaller than a stator lamination notch height (i.e., a height of the rectangular groove 21), and a height difference h is 0.3mm, the angle α between the oblique edge of the isosceles trapezoid portion 402 of the convex wedge 40 and the bottom surface of the rectangular main body portion 401 of the convex wedge 40 is equal to the stator lamination slot angle (i.e., the angle between the oblique edge and the bottom edge of the first isosceles trapezoid slot 22). The overall height of the convex wedge 40 is determined by the limit of the slot fill rate.
The convex slot wedge 40 is plugged in the stator winding wire slot after the stator winding is embedded, and the width of the slot opening is reduced due to the arrangement of the convex block, so that the tooth space effect is weakened, the surface loss and the pulse vibration loss of a rotor core on the stator can be reduced, and the efficiency of the motor is obviously improved. In addition, the convex slot wedge 40 has the advantages of effectively blocking the slot opening, simple process, strong universality, high mechanical strength, accurate geometric dimension, good manufacturability of the slot wedge during line inserting and the like. In particular, since the convex wedge 40 effectively blocks the slot opening, the following advantageous effects are provided to the motor: (1) the effective air gap of the motor is shortened, so that no-load current is reduced; (2) the magnetic flux distribution in the air gap tends to be uniform, so that the noise and vibration of the motor can be reduced; (3) the wind abrasion loss is reduced, particularly the mechanical loss, iron loss and stray loss of the large and medium-sized motors can be reduced, and the efficiency of the motors can be effectively improved; (4) the loss is reduced, and simultaneously the temperature rise of the motor is synchronously reduced, so that the service life of the motor can be prolonged. Thus, the convex wedge 40 is particularly well suited for high speed, high efficiency motors.
For the unequal stator slot laminations used in the IE5 three-phase asynchronous motor based on the unequal stator slot laminations and the cast aluminum rotor of example 1, the large stator slots 26 and the small stator slots 25 in each set of stator slots 2 are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 9 × n, i.e., 3 (phases) × 3 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 1 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 2
As shown in fig. 12, the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 2 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged in a radial manner along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the motor stage number. The number of stator slots per pole and per phase in each group of stator slots 2 is four, and the stator slots comprise two large stator slots 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: two large stator slots 26 are arranged in the middle of the stator slot group 2, and two sides of the two large stator slots 26 are respectively symmetrically provided with one small stator slot 25, namely, the small stator slot 25 on one side of the two large stator slots 26 and the small stator slot 25 on the other side of the two large stator slots 26 are symmetrical about the center line of the two large stator slots 26 along the circumferential direction of the second substrate, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 2 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor in the embodiment 2, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 2, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 12 × n, that is, 3 (phase) × 4 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 2 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 3
As shown in fig. 13, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 3 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged in a radial manner along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each stator slot group 2 is five, and the stator slots comprise a large stator slot 26 and four small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, and two small stator slots 25 are symmetrically arranged on two sides of the large stator slot 26, namely, the two small stator slots 25 on one side of the large stator slot 26 are symmetrical to the two small stator slots 25 on the other side of the large stator slot 26 about the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 3 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 3, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 3, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 15 × n, that is, 3 (phase) × 5 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 3 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 4
As shown in fig. 14, the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 4 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the motor stage number. The number of stator slots per pole and per phase in each group of stator slots 2 is five, including three large stator slots 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: three large stator slots 26 are arranged in the middle of the stator slot group 2, and two sides of each large stator slot 26 are symmetrically provided with one small stator slot 25, namely, the small stator slot 25 on one side of each large stator slot 26 is symmetrical to the small stator slot 25 on the other side of each large stator slot 26 about the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 4 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 4, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 4, the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 15 × n, i.e., 3 (phase) × 5 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 4 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 5
As shown in fig. 15, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 5 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged in a radial manner along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is five, and the stator slots comprise a large stator slot 26, two middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, two sides of the large stator slot 26 are respectively symmetrically provided with a small stator slot 25, a middle stator slot 27 is respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, namely, the small stator slot 25 on one side of the large stator slot 26 and the small stator slot 25 on the other side of the large stator slot 26 are symmetrical about the large stator slot 26 at the middle position, and the middle stator slot 27 on one side of the large stator slot 26 and the middle stator slot 27 on the other side of the large stator slot 26 are symmetrical about the large stator slot 26 at the middle position, so that the large stator slot 26, the middle stator slot 27 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on stator unequal slot punching and cast aluminum rotor in the embodiment 5 are distributed in a form of small-middle-large-middle-small.
All the large stator slots 26 in one stator unequal slot punching sheet have the same slot shape and the same area, all the middle stator slots 27 have the same slot shape and the same area, and all the small stator slots 25 have the same slot shape and the same area. The area of the small stator slot 25 is 80% -95% of the area of the large stator slot 26, the area of the middle stator slot 27 is between the area of the small stator slot 25 and the area of the large stator slot 26, and the central angles between the adjacent large stator slot 26, the middle stator slot 27 and the small stator slot 25 are all equal, namely the distance between the adjacent large stator slot 26 and the middle stator slot 27 along the circumferential direction of the second substrate 1 and the distance between the adjacent middle stator slot 27 and the small stator slot 25 along the circumferential direction of the second substrate 1 are all equal.
As shown in fig. 16, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 are all semi-closed pear-shaped slots, which are beneficial for placing copper wires, and include a rectangular slot 21, a first isosceles trapezoidal slot 22, a second isosceles trapezoidal slot 23 and a semicircular slot 24, one end of the second substrate 1 close to the inner circular ring surface is provided with the rectangular slot 21, the width of the rectangular slot 21 is 2.5-4.2 mm, which defines the width of the notch of the stator punching sheet, and the height of the rectangular slot 21 is 0.9-2.0 mm, which defines the height of the notch of the stator punching sheet; the second isosceles trapezoid-shaped groove 23 is arranged at one end, far away from the center of a circle, of the first isosceles trapezoid-shaped groove 22, the upper bottom edge of the first isosceles trapezoid-shaped groove 22 is collinear with the long edge of the rectangular groove 21, the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is collinear with the upper bottom edge of the second isosceles trapezoid-shaped groove 23, the width of the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is 5-10 mm, the width of a groove shoulder of a stator punching sheet is limited, the included angle between the oblique edge and the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is 20-30 degrees, the notch angle of the stator punching sheet is limited, the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23 is 8-15 mm, and the height of the second isosceles trapezoid-shaped; the semicircular groove 24 is arranged at the position of the lower bottom edge of the second isosceles trapezoid groove 23, and the diameter of the semicircular groove 24 is equal to the width of the lower bottom edge of the second isosceles trapezoid groove 23.
In addition, all the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of the plurality of stator unequal slot punching sheets which are laminated to form the stator core respectively form a stator winding large slot, a stator winding middle slot and a stator winding small slot, a stator winding made of copper wires is embedded in the stator winding large slot, the stator winding middle slot and the stator winding small slot, and a concave slot wedge 30 or a convex slot wedge 40 is respectively plugged in the stator winding large slot, the stator winding middle slot and the stator winding small slot after the stator winding is embedded.
In the IE5 three-phase asynchronous motor based on the unequal-slot punching piece of the stator and the cast-aluminum rotor in the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal-slot punching piece of the stator, the structures of the concave slot wedges 30 and the convex slot wedges 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the unequal stator slot laminations used in the IE5 three-phase asynchronous motor based on the unequal stator slot laminations and the cast aluminum rotor of example 5, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 15 × n, i.e., 3 (phases) × 5 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 5 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 6
As shown in fig. 17, the unequal-stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal-stator slot punching and the cast-aluminum rotor of the embodiment 6 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged in a radial manner along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is six, and the stator slots comprise two large stator slots 26 and four small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: two large stator slots 26 are arranged in the middle of the stator slot group 2, and two small stator slots 25 are symmetrically arranged on two sides of the two large stator slots 26, namely, the two small stator slots 25 on one side of the two large stator slots 26 and the two small stator slots 25 on the other side of the two large stator slots 26 are symmetric about the center line of the two large stator slots 26 along the circumferential direction of the second substrate, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the unequal slot punching sheet and the cast aluminum rotor of the stator in embodiment 6 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of embodiment 6, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in embodiment 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 6, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 18 × n, that is, 3 (phase) × 6 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 6 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 7
As shown in fig. 18, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 7 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole per phase in each set of stator slot 2 is six, including four large stator slots 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: four large stator slots 26 are arranged in the middle of the stator slot group 2, and two sides of the four large stator slots 26 are respectively symmetrically provided with one small stator slot 25, namely, the small stator slot 25 on one side of the four large stator slots 26 and the small stator slot 25 on the other side of the four large stator slots 26 are symmetrical about the center line of the four large stator slots 26 along the circumferential direction of the second substrate, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 7 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 7, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punches used in the IE5 three-phase asynchronous motor based on the stator unequal slot punch and the cast aluminum rotor of example 7, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 18 × n, that is, 3 (phase) × 6 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 6 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 8
As shown in fig. 19, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 8 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is six, and the stator slots comprise two large stator slots 26, two middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: two large stator slots 26 are arranged in the middle of the stator slot group 2, two sides of the two large stator slots 26 are respectively symmetrically provided with a small stator slot 25, a middle stator slot 27 is respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, that is, the small stator slots 25 on one side of the two large stator slots 26 are symmetrical with the small stator slots 25 on the other side of the two large stator slots 26 about the center line of the two large stator slots 26 in the circumferential direction of the second substrate, the middle stator slots 27 on one side of the two large stator slots 26 are symmetrical with the middle stator slots 27 on the other side of the two large stator slots 26 about the center line of the two large stator slots 26 in the circumferential direction of the second substrate, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 8 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 8, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, and the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the unequal stator slot laminations used in the IE5 three-phase asynchronous motor based on the unequal stator slot laminations and the cast aluminum rotor of example 8, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 18 × n, i.e., 3 (phases) × 6 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 8 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 9
As shown in fig. 20, the unequal-stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal-stator slot punching and the cast-aluminum rotor of example 9 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole per phase in each set of stator slot 2 is seven, including one large stator slot 26 and six small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, and three small stator slots 25 are symmetrically arranged on two sides of the large stator slot 26, namely, the three small stator slots 25 on one side of the large stator slot 26 are symmetrical to the three small stator slots 25 on the other side of the large stator slot 26 about the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor in the embodiment 9 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 9, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in example 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 9, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 21 × n, that is, 3 (phase) × 7 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal groove punching sheets of the stator and the cast-aluminum rotor in the embodiment 9 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 10
As shown in fig. 21, the unequal-stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal-stator slot punching and the cast-aluminum rotor of the embodiment 10 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is seven, including three large stator slots 26 and four small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: three large stator slots 26 are arranged in the middle of the stator slot group 2, and two small stator slots 25 are symmetrically arranged on two sides of the three large stator slots 26 respectively, namely, the two small stator slots 25 on one side of the three large stator slots 26 are symmetrical to the two small stator slots 25 on the other side of the three large stator slots 26 about the large stator slot 26 in the middle position, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the unequal slot punching sheet and the cast aluminum rotor in the embodiment 10 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the embodiment 10, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 10, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 21 × n, that is, 3 (phase) × 7 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 10 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 11
As shown in fig. 22, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 11 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole per phase in each set of stator slot 2 is seven, including five large stator slots 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: five large stator slots 26 are arranged in the middle of the stator slot group 2, and two sides of the five large stator slots 26 are respectively symmetrically provided with one small stator slot 25, namely, the small stator slot 25 on one side of the five large stator slots 26 is symmetrical to the small stator slot 25 on the other side of the five large stator slots 26 about the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor in the embodiment 11 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 11, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in example 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 11, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 21 × n, that is, 3 (phase) × 7 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The experimental data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 11 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 12
As shown in fig. 23, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 12 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is seven, and the stator slots comprise a large stator slot 26, two middle stator slots 27 and four small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, two small stator slots 25 are symmetrically arranged on two sides of the large stator slot 26, two middle stator slots 27 are symmetrically arranged between the large stator slot 26 and the small stator slots 25, namely, the two small stator slots 25 on one side of the large stator slot 26 and the two small stator slots 25 on the other side of the large stator slot 26 are symmetrically arranged about the large stator slot 26 at the middle position, and the middle stator slot 27 on one side of the large stator slot 26 and the middle stator slot 27 on the other side of the large stator slot 26 are symmetrically arranged about the large stator slot 26 at the middle position, so that the large stator slot 26, the middle stator slot 27 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on stator unequal slot punching and cast aluminum rotor in the embodiment 12 are distributed in a form of 'small-medium-large-medium-small' form. The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 12, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, and the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 12, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 21 × n, i.e., 3 (phase) × 7 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 12 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 13
As shown in fig. 24, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 13 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is seven, and the stator slots comprise three large stator slots 26, two middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: three large stator slots 26 are arranged in the middle of the stator slot group 2, two sides of the three large stator slots 26 are respectively symmetrically provided with a small stator slot 25, a middle stator slot 27 is respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, that is, the small stator slots 25 on one side of the three large stator slots 26 are symmetrical with the small stator slots 25 on the other side of the three large stator slots 26 with respect to the large stator slots 26 at the middle position, the middle stator slots 27 on one side of the three large stator slots 26 are symmetrical with the middle stator slots 27 on the other side of the three large stator slots 26 with respect to the large stator slots 26 at the middle position, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of example 13 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 13, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, and the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 13, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 21 × n, i.e., 3 (phase) × 7 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 13 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 14
As shown in fig. 25, the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 14 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is seven, and the stator slots comprise a large stator slot 26, four middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, two sides of the large stator slot 26 are respectively symmetrically provided with a small stator slot 25, two middle stator slots 27 are respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, namely, the small stator slot 25 on one side of the large stator slot 26 and the small stator slot 25 on the other side of the large stator slot 26 are symmetrical to the large stator slot 26 in the middle position, and the two middle stator slots 27 on one side of the large stator slot 26 and the two middle stator slots 27 on the other side of the large stator slot 26 are symmetrical to the large stator slot 26 in the middle position, so that the large stator slot 26, the middle stator slot 27 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on stator unequal slot punching and cast aluminum rotor in the embodiment 14 are distributed in a form of small-middle-large-middle. The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent middle stator slots 27 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 14, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 14, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 21 × n, i.e., 3 (phase) × 7 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 14 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Practice ofExample 15
As shown in fig. 26, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 15 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole per phase in each set of stator slot 2 is eight, including two large stator slots 26 and six small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: two large stator slots 26 are arranged in the middle of the stator slot group 2, and three small stator slots 25 are symmetrically arranged on two sides of the two large stator slots 26, namely, the three small stator slots 25 on one side of the two large stator slots 26 and the three small stator slots 25 on the other side of the two large stator slots 26 are symmetrical about the center line of the two large stator slots 26 along the circumferential direction of the second substrate, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 15 are distributed in the form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 15, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punches used in the IE5 three-phase asynchronous motor based on the stator unequal slot punch and the cast aluminum rotor of example 15, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 24 × n, that is, 3 (phase) × 8 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 15 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 16
As shown in fig. 27, the unequal-stator slot punching sheet used in the IE5 three-phase asynchronous motor based on the unequal-stator slot punching sheet and the cast-aluminum rotor of the embodiment 16 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is eight, including four large stator slots 26 and four small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: four large stator slots 26 are arranged in the middle of the stator slot group 2, and two small stator slots 25 are symmetrically arranged on two sides of the four large stator slots 26, namely two small stator slots 25 on one side of the four large stator slots 26 and two small stator slots 25 on the other side of the four large stator slots 26 are symmetric about a center line of the four large stator slots 26 in the circumferential direction of the second substrate, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor in the embodiment 16 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 16, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in example 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 16, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 24 × n, that is, 3 (phase) × 8 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The experimental data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 16 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 17
As shown in fig. 28, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 17 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole per phase in each set of stator slot 2 is eight, including six large stator slots 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: six large stator slots 26 are arranged in the middle of the stator slot group 2, and two sides of the six large stator slots 26 are respectively symmetrically provided with one small stator slot 25, namely, the small stator slots 25 on one side of the six large stator slots 26 and the small stator slots 25 on the other side of the six large stator slots 26 are symmetrical about the center line of the six large stator slots 26 along the circumferential direction of the second substrate, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the unequal slot punching sheet and the cast aluminum rotor of the stator in the embodiment 17 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 17, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in example 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 17, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 24 × n, that is, 3 (phase) × 8 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal groove punching of the stator and the cast-aluminum rotor in the embodiment 17 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 18
As shown in fig. 29, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 18 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is eight, and the stator slots comprise four large stator slots 26, two middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: four large stator slots 26 are arranged in the middle of the stator slot group 2, two sides of the four large stator slots 26 are respectively symmetrically provided with a small stator slot 25, a middle stator slot 27 is respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, that is, the small stator slots 25 on one side of the four large stator slots 26 are symmetrical with the small stator slots 25 on the other side of the four large stator slots 26 about the center line of the four large stator slots 26 in the circumferential direction of the second substrate, the middle stator slots 27 on one side of the four large stator slots 26 are symmetrical with the middle stator slots 27 on the other side of the four large stator slots 26 about the center line of the four large stator slots 26 in the circumferential direction of the second substrate, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 18 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 18, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching are basically in the same slot shape as in example 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as in example 1, and detailed description is omitted.
For the unequal-stator slot laminations used in the IE5 three-phase asynchronous motor based on the unequal-stator slot laminations and the cast-aluminum rotor of example 18, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slots 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1, and the total number is 24 × n, that is, 3 (phase) × 8 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 18 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 19
As shown in fig. 30, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 19 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is eight, and the stator slots comprise two large stator slots 26, four middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: two large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are symmetrically arranged on two sides of the two large stator slots 26 respectively, two middle stator slots 27 are symmetrically arranged between the large stator slots 26 and the small stator slots 25 respectively, that is, the small stator slots 25 on one side of the two large stator slots 26 are symmetrical with the small stator slots 25 on the other side of the two large stator slots 26 about the center line of the two large stator slots 26 in the circumferential direction of the second substrate, the two middle stator slots 27 on one side of the two large stator slots 26 are symmetrical with the two middle stator slots 27 on the other side of the two large stator slots 26 about the center line of the two large stator slots 26 in the circumferential direction of the second substrate, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 19 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent middle stator slots 27 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 19, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, and the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 19, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 24 × n, i.e., 3 (phase) × 8 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets of the stator and the cast-aluminum rotor in the embodiment 19 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 20
As shown in fig. 31, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 20 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor steps. The number of stator slots per pole and per phase in each stator slot group 2 is nine, and the stator slots comprise a large stator slot 26 and eight small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, and four small stator slots 25 are symmetrically arranged on two sides of the large stator slot 26, namely, the four small stator slots 25 on one side of the large stator slot 26 are symmetrical to the four small stator slots 25 on the other side of the large stator slot 26 about the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 20 are distributed in the form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 20, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punches used in the IE5 three-phase asynchronous motor based on the stator unequal slot punch and the cast aluminum rotor of example 20, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 27 × n, that is, 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 20 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 21
As shown in fig. 32, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 21 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is nine, and the stator slots comprise three large stator slots 26 and six small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: three large stator slots 26 are arranged in the middle of the stator slot group 2, and three small stator slots 25 are symmetrically arranged on two sides of the three large stator slots 26 respectively, namely, the three small stator slots 25 on one side of the three large stator slots 26 are symmetrical to the three small stator slots 25 on the other side of the three large stator slots 26 about the large stator slot 26 in the middle position, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the unequal slot punching sheet and the cast aluminum rotor of the stator of the embodiment 21 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 21, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in example 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 21, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 27 × n, that is, 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The experimental data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 21 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 22
As shown in fig. 33, the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of the embodiment 22 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor steps. The number of stator slots per pole and per phase in each group of stator slots 2 is nine, and the stator slots comprise five large stator slots 26 and four small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: five large stator slots 26 are arranged in the middle of the stator slot group 2, and two small stator slots 25 are symmetrically arranged on two sides of the five large stator slots 26 respectively, namely two small stator slots 25 on one side of the five large stator slots 26 are symmetrical to two small stator slots 25 on the other side of the five large stator slots 26 about the large stator slot 26 in the middle position, so that the large stator slots 26 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on the stator unequal slot punching sheet and the cast aluminum rotor in the embodiment 22 are distributed in a form of small-large-small. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 22, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching sheet are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, the structures of the concave slot wedge 30 and the convex slot wedge 40 and the like are the same as those in the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punches used in the IE5 three-phase asynchronous motor based on the stator unequal slot punch and the cast aluminum rotor of example 22, the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 27 × n, i.e., 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 22 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 23
As shown in fig. 34, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 23 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each set of stator slot 2 is nine, including seven large stator slots 26 and two small stator slots 25. The distribution of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 is: seven large stator slots 26 are arranged in the middle of the stator slot group 2, and two sides of the seven large stator slots 26 are respectively symmetrically provided with one small stator slot 25, namely, the small stator slot 25 on one side of the seven large stator slots 26 is symmetrical to the small stator slot 25 on the other side of the seven large stator slots 26 about the large stator slot 26 in the middle position, so that the large stator slot 26 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of the embodiment 23 are distributed in a form of 'small-large-small'. The central angles between the adjacent large stator slots 26 and the small stator slots 25 are equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1 and the distance between the adjacent large stator slots 26 and the small stator slots 25 in the circumferential direction of the second substrate 1 are equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 23, the large stator slot 26 and the small stator slot 25 in the unequal stator slot punching are basically in a slot shape, the arrangement of the cramp slot 3 and the cleat slot 4, and the structures of the concave slot wedge 30 and the convex slot wedge 40 are the same as those in example 1, and detailed description is omitted here.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 23, the total number of the large stator slots 26 and the small stator slots 25 in each set of stator slot groups 2 uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 is 27 × n, that is, 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal groove punching sheets of the stator and the cast-aluminum rotor in the embodiment 23 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 24
As shown in fig. 35, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 24 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots of each pole and each phase in each group of stator slots 2 is nine, and the stator slots comprise a large stator slot 26, two middle stator slots 27 and six small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, three small stator slots 25 are symmetrically arranged on two sides of the large stator slot 26, a middle stator slot 27 is symmetrically arranged between the large stator slot 26 and the small stator slots 25, that is, the three small stator slots 25 on one side of the large stator slot 26 are symmetrical with the three small stator slots 25 on the other side of the large stator slot 26 with respect to the large stator slot 26 at the middle position, the middle stator slot 27 on one side of the large stator slot 26 is symmetrical with the middle stator slot 27 on the other side of the large stator slot 26 with respect to the large stator slot 26 at the middle position, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 24 are distributed in the form of "small-medium-large-medium-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 24, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 24, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 27 × n, i.e., 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The experimental data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 24 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 25
As shown in fig. 36, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 25 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots of each pole and each phase in each group of stator slots 2 is nine, and the stator slots comprise three large stator slots 26, two middle stator slots 27 and four small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: three large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are symmetrically arranged on two sides of the three large stator slots 26 respectively, a middle stator slot 27 is symmetrically arranged between the large stator slot 26 and the small stator slots 25 respectively, that is, the two small stator slots 25 on one side of the three large stator slots 26 are symmetrical with the two small stator slots 25 on the other side of the three large stator slots 26 with respect to the large stator slot 26 at the middle position, the middle stator slot 27 on one side of the three large stator slots 26 is symmetrical with the middle stator slot 27 on the other side of the three large stator slots 26 with respect to the large stator slot 26 at the middle position, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 25 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 25, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 25, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 27 × n, i.e., 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 25 are collected, the copper saving is measured to be 0.1-0.25 kg/kW, and the efficiency of the motor reaches the efficiency value of IE5 standard.
Example 26
As shown in fig. 37, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 26 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is nine, and the stator slots comprise five large stator slots 26, two middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: five large stator slots 26 are arranged in the middle of the stator slot group 2, two sides of the five large stator slots 26 are respectively symmetrically provided with a small stator slot 25, a middle stator slot 27 is respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, that is, the small stator slots 25 on one side of the five large stator slots 26 are symmetrical with the small stator slots 25 on the other side of the five large stator slots 26 with respect to the large stator slots 26 at the middle position, the middle stator slots 27 on one side of the five large stator slots 26 are symmetrical with the middle stator slots 27 on the other side of the five large stator slots 26 with respect to the large stator slots 26 at the middle position, therefore, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 26 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 26, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching are basically in the same slot shape as in example 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as in example 1, and detailed description is omitted.
For the unequal-stator slot laminations used in the IE5 three-phase asynchronous motor based on the unequal-stator slot laminations and the cast-aluminum rotor of example 26, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slots 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1, and the total number is 27 × n, that is, 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal groove punching of the stator and the cast-aluminum rotor in the embodiment 26 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 27
As shown in fig. 38, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 27 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 in accordance with the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is nine, and the stator slots comprise a large stator slot 26, four middle stator slots 27 and four small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, two small stator slots 25 are symmetrically arranged on two sides of the large stator slot 26, two middle stator slots 27 are symmetrically arranged between the large stator slot 26 and the small stator slots 25, that is, the two small stator slots 25 on one side of the large stator slot 26 and the two small stator slots 25 on the other side of the large stator slot 26 are symmetrical with respect to the large stator slot 26 at the middle position, the two middle stator slots 27 on one side of the large stator slot 26 and the two middle stator slots 27 on the other side of the large stator slot 26 are symmetrical with respect to the large stator slot 26 at the middle position, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 27 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent middle stator slots 27 in the circumferential direction of the second substrate 1, the distance between the adjacent small stator slots 25 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching sheet and the cast aluminum rotor of the embodiment 27, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching sheet are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching sheet, and the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and the detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 27, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 27 × n, i.e., 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
The test data of the IE5 three-phase asynchronous motor based on the unequal slot punching sheets and the cast-aluminum rotor of the stator in the embodiment 27 are collected, and the efficiency of the motor reaches the efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 28
As shown in fig. 39, the unequal stator slot punching used in the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 28 includes a second substrate 1 in a circular ring shape, and at least six sets of stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots of each pole and each phase in each group of stator slots 2 is nine, and the stator slots comprise three large stator slots 26, four middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: three large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are symmetrically arranged on two sides of the three large stator slots 26 respectively, two middle stator slots 27 are arranged between the large stator slots 26 and the small stator slots 25 respectively, that is, the small stator slots 25 on one side of the three large stator slots 26 are symmetrical with the small stator slots 25 on the other side of the three large stator slots 26 with respect to the large stator slots 26 at the middle position, the two middle stator slots 27 on one side of the three large stator slots 26 are symmetrical with the two middle stator slots 27 on the other side of the three large stator slots 26 with respect to the large stator slots 26 at the middle position, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal slot punching of the stator and cast aluminum rotor of the embodiment 28 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent large stator slots 26 in the circumferential direction of the second substrate 1, the distance between the adjacent middle stator slots 27 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor of example 28, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching are basically in the same slot shape as in example 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as in example 1, and detailed description is omitted.
For the unequal-stator slot laminations used in the IE5 three-phase asynchronous motor based on the unequal-stator slot laminations and the cast-aluminum rotor of example 28, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1, and the total number is 27 × n, i.e., 3 (phases) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 28 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
Example 29
As shown in fig. 40, the stator unequal slot stamped steel used in the IE5 three-phase asynchronous motor based on the stator unequal slot stamped steel and the cast aluminum rotor of the embodiment 29 includes a second substrate 1 in a circular ring shape, and at least six stator slot groups 2 for placing copper wires are uniformly arranged radially along the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 according to the number of motor stages. The number of stator slots per pole and per phase in each group of stator slots 2 is nine, and the stator slots comprise a large stator slot 26, six middle stator slots 27 and two small stator slots 25. The distribution of the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in the stator slot group 2 is: a large stator slot 26 is arranged in the middle of the stator slot group 2, two sides of the large stator slot 26 are respectively symmetrically provided with a small stator slot 25, three middle stator slots 27 are respectively symmetrically arranged between the large stator slot 26 and the small stator slot 25, that is, the small stator slots 25 on one side of the large stator slot 26 are symmetrical with the small stator slots 25 on the other side of the large stator slot 26 with respect to the large stator slot 26 at the middle position, the three middle stator slots 27 on one side of the large stator slot 26 are symmetrical with the three middle stator slots 27 on the other side of the large stator slot 26 with respect to the large stator slot 26 at the middle position, therefore, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 of each stator slot group 2 in the IE5 three-phase asynchronous motor based on unequal-slot punching of the stator and cast aluminum rotor of the embodiment 29 are distributed in the form of "small-middle-large-middle-small". The central angles between the adjacent large stator slots 26, the middle stator slots 27 and the small stator slots 25 are all equal, that is, the distance between the adjacent middle stator slots 27 in the circumferential direction of the second substrate 1, the distance between the adjacent large stator slots 26 and the middle stator slots 27 in the circumferential direction of the second substrate 1, and the distance between the adjacent middle stator slots 27 and the small stator slots 25 in the circumferential direction of the second substrate 1 are all equal.
In the IE5 three-phase asynchronous motor based on the unequal stator slot punching and the cast aluminum rotor of the embodiment 29, the large stator slot 26, the middle stator slot 27 and the small stator slot 25 in the unequal stator slot punching are basically in the same slot shape as the embodiment 5, the arrangement of the cramp slots 3 and the piece arranging slots 4 in the unequal stator slot punching, the structures of the concave slot wedges 30 and the convex slot wedges 40 are the same as the embodiment 1, and detailed description is omitted.
For the stator unequal slot punching used in the IE5 three-phase asynchronous motor based on the stator unequal slot punching and the cast aluminum rotor of example 29, the large stator slots 26, the middle stator slots 27 and the small stator slots 25 in each set of stator slot groups 2 are uniformly arranged radially in the circumferential direction of the second substrate 1 on the inner circular ring surface of the second substrate 1 for a total number of 27 × n, i.e., 3 (phase) × 9 (number of slots per pole per phase) × n, where n is the number of poles of the motor.
Test data of the IE5 three-phase asynchronous motor based on the unequal slot punching of the stator and the cast-aluminum rotor in the embodiment 29 are collected, and the efficiency of the motor reaches an efficiency value of IE5 standard when the copper saving is 0.1-0.25 kg/kW.
It is noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, in this document, the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, unless otherwise specified, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like in the present specification are referred to in the state of being placed as shown in the drawings.
It should be further noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or alterations do not depart from the spirit of the invention.

Claims (14)

1. The utility model provides a IE5 three-phase asynchronous motor based on stator inequality groove punching and cast aluminium rotor, including pivot (100), front end housing (101), bearing (102), terminal box (103), stator (104), rotor (105), motor frame (106), rear end housing (107), fan (108), fan housing (109), install in the inner chamber of stator (104) rotor (105), the center of rotor (105) is provided with the shaft hole, pivot (100) cooperation is installed in the shaft hole of rotor (105), bearing (102) of installing both ends around pivot (100) support rotor (105) on front end housing (101) and rear end housing (107), its characterized in that:
the rotor (105) comprises a rotor core (1051) and a rotor winding (1052), the rotor core (1051) is formed by laminating a plurality of rotor punching sheets, each rotor punching sheet comprises a first substrate (11) in a circular ring shape, a plurality of closed slots (12) are radially and uniformly arranged on the outer circular ring surface of the first substrate (11) along the circumferential direction of the first substrate (11), all closed slots (12) of the plurality of rotor punching sheets laminated to form the rotor core (1051) form a rotor winding wire slot, and an aluminum guide strip (13) is cast in the rotor winding wire slot to form the rotor winding (1052) of the rotor (105);
the stator (104) comprises a stator winding (1041) and a stator core (1042), the stator core (1042) is formed by laminating a plurality of stator unequal slot punching sheets, wherein:
the unequal-slot punching sheet for the stator comprises a second substrate (1) in a ring shape, at least six groups of stator slot groups (2) used for placing copper wires are radially and uniformly arranged on the inner ring surface of the second substrate (1) along the circumferential direction of the second substrate (1), the number of stator slots of each pole and each phase in each group of stator slot groups (2) is at least three, and the number and distribution of the stator slots are in one of the following forms: (1) each stator slot of each pole and each phase in each group of stator slot groups (2) comprises at least one large stator slot (26) and at least two small stator slots (25), the large stator slot (26) is arranged in the middle of the stator slot group (2), one or more small stator slots (25) are respectively arranged on two sides of the large stator slot (26), and the small stator slots (25) on two sides of the large stator slot (26) are symmetrically arranged relative to the large stator slot (26); or (2) each group of stator slot groups (2) comprises at least one large stator slot (26), at least two middle stator slots (27) and at least two small stator slots (25), the large stator slot (26) is arranged in the middle of the stator slot group (2), one or more small stator slots (25) are respectively arranged on two sides of the large stator slot (26), one or more middle stator slots (27) are respectively arranged between the large stator slot (26) and the small stator slots (25), and the small stator slots (25) and the middle stator slots (27) on two sides of the large stator slot (26) are respectively symmetrically arranged relative to the large stator slot (26);
the area of the small stator slot (25) is 80% -95% of the area of the large stator slot (26), the area of the middle stator slot (27) is between the area of the small stator slot (25) and the area of the large stator slot (26), and the central angles among the adjacent large stator slot (26), the middle stator slot (27) and the small stator slot (25) are equal;
the large stator groove (26), the middle stator groove (27) and the small stator groove (25) are semi-closed grooves and comprise a rectangular groove (21), a first isosceles trapezoid groove (22), a second isosceles trapezoid groove (23) and a semicircular groove (24), one end of the inner circular ring surface close to the second substrate (1) is set to be the rectangular groove (21), the width of the rectangular groove (21) limiting the width of a notch of the stator punching sheet is 2.5-4.2 mm, the height of the rectangular groove (21) limiting the height of the notch of the stator punching sheet is 0.9-2.0 mm, the second isosceles trapezoid groove (23) is arranged at one end, far away from the center of the second substrate (1), of the first isosceles trapezoid groove (22), the upper bottom edge of the first isosceles trapezoid groove (22) is collinear with the long edge of the rectangular groove (21), the lower bottom edge of the second isosceles trapezoid groove (22) is collinear with the upper bottom edge of the second isosceles trapezoid groove (23), and the width of the lower bottom edge of the first isosceles trapezoid groove (22) limiting the shoulder width of the stator punching sheet is 5-10 mm, an included angle between the bevel edge of the first isosceles trapezoid groove (22) which limits the angle of the notch of the stator punching sheet and the lower bottom edge is 20-30 degrees, the width of the lower bottom edge of the second isosceles trapezoid groove (23) is 8-15 mm, the height of the second isosceles trapezoid groove (23) is 12-40 mm, the semicircular groove (24) is arranged at the position of the lower bottom edge of the second isosceles trapezoid groove (23), and the diameter of the semicircular groove (24) is equal to the width of the lower bottom edge of the second isosceles trapezoid groove (23);
all large stator slots (26), middle stator slots (27) and small stator slots (25) of a plurality of stator unequal slot punching sheets which are laminated to form a stator core (1042) respectively form a stator winding large slot, a stator winding middle slot and a stator winding small slot, a stator winding (1041) made of copper wires is embedded in the stator winding large slot, the stator winding middle slot and the stator winding small slot, and a concave slot wedge (30) or a convex slot wedge (40) is respectively plugged in the stator winding large slot, the stator winding middle slot and the stator winding small slot after the stator winding (1041) is embedded, wherein the concave slot wedge (30) comprises a rectangular main body part (301), a slot part (302) arranged on the bottom surface of the rectangular main body part (301) and bevel parts (303) positioned on two sides of the slot part (302), the width of the rectangular main body part (301) of the concave slot wedge (30) is 0.7mm smaller than the width of a stator slot shoulder, an included angle between the bevel edge of the bevel angle part (303) of the concave slot wedge (30) and the bottom surface of the rectangular main body part (301) of the concave slot wedge (30) is equal to the angle of the notch of the stator punching sheet, the width of the groove part (302) of the concave slot wedge (30) is the same as the width of the notch of the stator punching sheet, and the height of the rectangular main body part (301) of the concave slot wedge (30) is 1.5-2 mm; the convex slot wedge (40) comprises a rectangular main body part (401), an isosceles trapezoid part (402) arranged on the bottom surface of the rectangular main body part (401) and a convex block (403) protruding from the isosceles trapezoid part (402), wherein the width of the rectangular main body part (401) of the convex slot wedge (40) is 1-3 mm smaller than the width of a slot shoulder of a stator punching sheet, the width of the convex block (403) of the convex slot wedge (40) is 0.1mm smaller than the width of a slot opening of the stator punching sheet, the height of the convex block (403) of the convex slot wedge (40) is 0.3mm smaller than the height of the slot opening of the stator punching sheet, and an included angle between the inclined edge of the isosceles trapezoid part (402) of the convex slot wedge (40) and the bottom surface of the rectangular main body part (401) of the convex slot.
2. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole and per phase in each group of stator slots (2) is three, including one large stator slot (26) and two small stator slots (25), the distribution of the large stator slot (26) and the small stator slot (25) is as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), two sides of the large stator slot (26) are respectively provided with a small stator slot (25), and the small stator slot (25) on one side of the large stator slot (26) and the small stator slot (25) on the other side of the large stator slot (26) are symmetrically arranged relative to the large stator slot (26) in the middle.
3. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slot per pole and per phase in each group of stator slots (2) is four, comprising two large stator slots (26) and two small stator slots (25), the distribution of the large stator slots (26) and the small stator slots (25) is as follows: the two large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the two large stator slots (26) are respectively provided with a small stator slot (25), and the small stator slot (25) on one side of the two large stator slots (26) and the small stator slot (25) on the other side of the two large stator slots (26) are symmetrical about the central line of the two large stator slots (26) along the circumferential direction of the second substrate.
4. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slot per pole per phase in each group of stator slots (2) is five, the number and distribution of large stator slots (26) and small stator slots (25) is one or more of the following forms:
(1) each group of the stator slot groups (2) comprises five stator slots per pole and phase, wherein each stator slot group comprises a large stator slot (26) and four small stator slots (25), and the large stator slot (26) and the small stator slot (25) are distributed as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the large stator slot (26), and the two small stator slots (25) on one side of the large stator slot (26) and the two small stator slots (25) on the other side of the large stator slot (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
(2) each group of the stator slot groups (2) comprises three large stator slots (26) and two small stator slots (25), wherein each pole of the five stator slots comprises two small stator slots (25), and the large stator slots (26) and the small stator slots (25) are distributed as follows: the three large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of each large stator slot (26) are respectively provided with a small stator slot (25), and the small stator slots (25) on one side of each large stator slot (26) and the small stator slots (25) on the other side of each large stator slot (26) are symmetrically arranged relative to the large stator slot (26) in the middle.
5. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slot per pole per phase in each group of stator slots (2) is six, the number and distribution of large stator slots (26) and small stator slots (25) is one or more of the following forms:
(1) each group of the stator slot groups (2) comprises two large stator slots (26) and four small stator slots (25), wherein each pole of the six stator slots comprises four small stator slots (25), and the large stator slots (26) and the small stator slots (25) are distributed as follows: the two large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the two large stator slots (26), and the two small stator slots (25) on one side of the two large stator slots (26) and the two small stator slots (25) on the other side of the two large stator slots (26) are symmetrical about the central line of the two large stator slots (26) in the circumferential direction of the second substrate;
(2) each group of the stator slot groups (2) comprises four large stator slots (26) and two small stator slots (25), wherein each pole of the six stator slots comprises the following six stator slots (25): the four large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the four large stator slots (26) are respectively provided with a small stator slot (25), and the small stator slots (25) on one side of the four large stator slots (26) and the small stator slots (25) on the other side of the four large stator slots (26) are symmetrical about the central line of the four large stator slots (26) in the circumferential direction of the second substrate.
6. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole per phase in each group of stator slots (2) is seven, the number and distribution of large stator slots (26) and small stator slots (25) is one or more of the following forms:
(1) each group of the seven stator slots in each pole of the stator slot group (2) comprises a large stator slot (26) and six small stator slots (25), and the large stator slot (26) and the small stator slots (25) are distributed as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), three small stator slots (25) are respectively arranged on two sides of the large stator slot (26), and the three small stator slots (25) on one side of the large stator slot (26) and the three small stator slots (25) on the other side of the large stator slot (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
(2) each group of the seven stator slots in each pole of the stator slot group (2) comprises three large stator slots (26) and four small stator slots (25), and the large stator slots (26) and the small stator slots (25) are distributed as follows: the three large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the three large stator slots (26), and the two small stator slots (25) on one side of the three large stator slots (26) and the two small stator slots (25) on the other side of the three large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
(3) each group of the stator slot groups (2) comprises five large stator slots (26) and two small stator slots (25) per pole and each phase of the seven stator slots, and the large stator slots (26) and the small stator slots (25) are distributed as follows: five large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the five large stator slots (26) are respectively provided with a small stator slot (25), and the small stator slot (25) on one side of the five large stator slots (26) and the small stator slot (25) on the other side of the five large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle.
7. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole per phase in each group of stator slots (2) is eight, the number and distribution of large stator slots (26) and small stator slots (25) is one or more of the following forms:
(1) each group of the eight stator slots in each pole and each phase of each stator slot group (2) comprises two large stator slots (26) and six small stator slots (25), and the large stator slots (26) and the small stator slots (25) are distributed as follows: the two large stator slots (26) are arranged in the middle of the stator slot group (2), three small stator slots (25) are respectively arranged on two sides of the two large stator slots (26), and the three small stator slots (25) on one side of the two large stator slots (26) and the three small stator slots (25) on the other side of the two large stator slots (26) are symmetrical about the central line of the two large stator slots (26) in the circumferential direction of the second substrate;
(2) each group of the eight stator slots in each pole and each phase of each stator slot group (2) comprises four large stator slots (26) and four small stator slots (25), and the large stator slots (26) and the small stator slots (25) are distributed as follows: the four large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the four large stator slots (26), and the two small stator slots (25) on one side of the four large stator slots (26) and the two small stator slots (25) on the other side of the four large stator slots (26) are symmetrical about the central line of the four large stator slots (26) in the circumferential direction of the second substrate;
(3) each group of the eight stator slots in each pole and each phase of each stator slot group (2) comprises six large stator slots (26) and two small stator slots (25), and the distribution of the large stator slots (26) and the small stator slots (25) is as follows: six large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the six large stator slots (26) are respectively provided with a small stator slot (25), and the small stator slots (25) on one side of the six large stator slots (26) and the small stator slots (25) on the other side of the six large stator slots (26) are symmetrical about the central line of the six large stator slots (26) along the circumferential direction of the second substrate.
8. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slot per pole per phase in each group of stator slots (2) is nine, the number and distribution of large stator slots (26) and small stator slots (25) is one or more of the following forms:
(1) each group of nine stator slots of each pole in each stator slot group (2) comprises a large stator slot (26) and eight small stator slots (25), and the distribution of the large stator slot (26) and the small stator slots (25) is as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), four small stator slots (25) are respectively arranged on two sides of the large stator slot (26), and the four small stator slots (25) on one side of the large stator slot (26) and the four small stator slots (25) on the other side of the large stator slot (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
(2) each group of nine stator slots of each pole in each phase in each stator slot group (2) comprises three large stator slots (26) and six small stator slots (25), and the distribution of the large stator slots (26) and the small stator slots (25) is as follows: the three large stator slots (26) are arranged in the middle of the stator slot group (2), the two sides of the three large stator slots (26) are respectively provided with three small stator slots (25), and the three small stator slots (25) on one side of the three large stator slots (26) and the three small stator slots (25) on the other side of the three large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
(3) each group of nine stator slots of each pole in each phase in each stator slot group (2) comprises five large stator slots (26) and four small stator slots (25), and the distribution of the large stator slots (26) and the small stator slots (25) is as follows: five large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the five large stator slots (26), and the two small stator slots (25) on one side of the five large stator slots (26) and the two small stator slots (25) on the other side of the five large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
(4) the nine stator slots per pole and per phase in each group of stator slot groups (2) comprise seven large stator slots (26) and two small stator slots (25), and the distribution of the large stator slots (26) and the small stator slots (25) is as follows: seven large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the seven large stator slots (26) are respectively provided with a small stator slot (25), and the small stator slot (25) on one side of the seven large stator slots (26) and the small stator slot (25) on the other side of the seven large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle.
9. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole and per phase in each group of stator slots (2) is five, including one large stator slot (26), two middle stator slots (27) and two small stator slots (25), the distribution of the large stator slot (26), the middle stator slot (27) and the small stator slots (25) is: a large stator groove (26) is arranged in the middle of the stator groove group (2), two sides of the large stator groove (26) are respectively provided with a small stator groove (25), a middle stator groove (27) is arranged between the large stator groove (26) and the small stator groove (25), the small stator groove (25) on one side of the large stator groove (26) and the small stator groove (25) on the other side of the large stator groove (26) are symmetrical about the large stator groove (26) in the middle, and the middle stator groove (27) on one side of the large stator groove (26) and the middle stator groove (27) on the other side of the large stator groove (26) are symmetrical about the large stator groove (26) in the middle.
10. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole and per phase in each group of stator slots (2) is six, including two large stator slots (26), two middle stator slots (27) and two small stator slots (25), the distribution of the large stator slots (26), the middle stator slots (27) and the small stator slots (25) is: the two large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the two large stator slots (26) are respectively provided with a small stator slot (25), a middle stator slot (27) is arranged between the large stator slot (26) and the small stator slot (25), the small stator slot (25) on one side of the two large stator slots (26) and the small stator slot (25) on the other side of the two large stator slots (26) are symmetrical about the central line of the two large stator slots (26) in the circumferential direction of the second substrate, and the middle stator slot (27) on one side of the two large stator slots (26) and the middle stator slot (27) on the other side of the two large stator slots (26) are symmetrical about the central line of the two large stator slots (26) in the circumferential direction of the second substrate.
11. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole per phase in each group of stator slots (2) is seven, the number and distribution of large stator slots (26), medium stator slots (27) and small stator slots (25) is one or more of the following forms:
(1) each group of the seven stator slots per pole and each phase in the stator slot group (2) comprises a large stator slot (26), two middle stator slots (27) and four small stator slots (25), and the large stator slot (26), the middle stator slot (27) and the small stator slots (25) are distributed as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the large stator slot (26), a middle stator slot (27) is respectively arranged between the large stator slot (26) and the small stator slots (25), the two small stator slots (25) on one side of the large stator slot (26) and the two small stator slots (25) on the other side of the large stator slot (26) are symmetrical about the large stator slot (26) in the middle position, and the middle stator slot (27) on one side of the large stator slot (26) and the middle stator slot (27) on the other side of the large stator slot (26) are symmetrical about the large stator slot (26) in the middle position;
(2) each group of the seven stator slots per pole and phase in the stator slot group (2) comprises three large stator slots (26), two middle stator slots (27) and two small stator slots (25), and the large stator slots (26), the middle stator slots (27) and the small stator slots (25) are distributed as follows: the three large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the three large stator slots (26) are respectively provided with a small stator slot (25), a middle stator slot (27) is arranged between the large stator slot (26) and the small stator slot (25), the small stator slot (25) on one side of the three large stator slots (26) and the small stator slot (25) on the other side of the three large stator slots (26) are symmetrical about the large stator slot (26) in the middle position, and the middle stator slot (27) on one side of the three large stator slots (26) and the middle stator slot (27) on the other side of the three large stator slots (26) are symmetrical about the large stator slot (26) in the middle position;
(3) each group of the seven stator slots per pole and each phase in the stator slot group (2) comprises a large stator slot (26), four middle stator slots (27) and two small stator slots (25), and the large stator slot (26), the middle stator slot (27) and the small stator slots (25) are distributed as follows: a large stator groove (26) is arranged in the middle of the stator groove group (2), two small stator grooves (25) are respectively arranged on two sides of the large stator groove (26), two middle stator grooves (27) are respectively arranged between the large stator groove (26) and the small stator grooves (25), the small stator groove (25) on one side of the large stator groove (26) and the small stator groove (25) on the other side of the large stator groove (26) are symmetrical about the large stator groove (26) in the middle, and the two middle stator grooves (27) on one side of the large stator groove (26) and the two middle stator grooves (27) on the other side of the large stator groove (26) are symmetrical about the large stator groove (26) in the middle.
12. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slots per pole per phase in each group of stator slots (2) is eight, the number and distribution of large stator slots (26), medium stator slots (27) and small stator slots (25) is one or more of the following forms:
(1) each pole of each group of the stator slot groups (2) comprises four large stator slots (26), two middle stator slots (27) and two small stator slots (25), and the large stator slots (26), the middle stator slots (27) and the small stator slots (25) are distributed as follows: the four large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the four large stator slots (26) are respectively provided with a small stator slot (25), a middle stator slot (27) is arranged between the large stator slot (26) and the small stator slot (25), the small stator slot (25) on one side of the four large stator slots (26) and the small stator slot (25) on the other side of the four large stator slots (26) are symmetrical about the central line of the four large stator slots (26) in the circumferential direction of the second substrate, and the middle stator slot (27) on one side of the four large stator slots (26) and the middle stator slot (27) on the other side of the four large stator slots (26) are symmetrical about the central line of the four large stator slots (26) in the circumferential direction of the second substrate;
(2) each pole of each group of the stator slot groups (2) comprises two large stator slots (26), four middle stator slots (27) and two small stator slots (25), and the large stator slots (26), the middle stator slots (27) and the small stator slots (25) are distributed as follows: the two large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of each large stator slot (26), two middle stator slots (27) are respectively arranged between each large stator slot (26) and each small stator slot (25), the small stator slots (25) on one side of each large stator slot (26) and the small stator slots (25) on the other side of each large stator slot (26) are symmetrical about the central line of the two large stator slots (26) in the circumferential direction of the second substrate, and the two middle stator slots (27) on one side of each large stator slot (26) and the two middle stator slots (27) on the other side of each large stator slot (26) are symmetrical about the central line of the two large stator slots (26) in the circumferential direction of the second substrate.
13. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast aluminum rotor as claimed in claim 1, wherein the number of stator slot per pole per phase in each group of stator slots (2) is nine, and the number and distribution of the large stator slot (26), the middle stator slot (27) and the small stator slot (25) are one or more of the following forms:
(1) each pole of each group of the stator slot groups (2) comprises nine stator slots of each phase, wherein each pole of each group of the stator slots comprises a large stator slot (26), two middle stator slots (27) and six small stator slots (25), and the large stator slot (26), the middle stator slot (27) and the small stator slots (25) are distributed as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), three small stator slots (25) are respectively arranged on two sides of the large stator slot (26), a middle stator slot (27) is respectively arranged between the large stator slot (26) and the small stator slots (25), the three small stator slots (25) on one side of the large stator slot (26) and the three small stator slots (25) on the other side of the large stator slot (26) are symmetrical about the large stator slot (26) in the middle position, and the middle stator slot (27) on one side of the large stator slot (26) and the middle stator slot (27) on the other side of the large stator slot (26) are symmetrical about the large stator slot (26) in the middle position;
(2) each pole of each group of the stator slot groups (2) comprises nine stator slots of each phase, wherein the nine stator slots comprise three large stator slots (26), two middle stator slots (27) and four small stator slots (25), and the large stator slots (26), the middle stator slots (27) and the small stator slots (25) are distributed as follows: the three large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of each large stator slot (26), one middle stator slot (27) is respectively arranged between each large stator slot (26) and each small stator slot (25), the two small stator slots (25) on one side of each large stator slot (26) and the two small stator slots (25) on the other side of each large stator slot (26) are symmetrical with respect to the large stator slot (26) in the middle, and the middle stator slot (27) on one side of each large stator slot (26) and the middle stator slot (27) on the other side of each large stator slot (26) are symmetrical with respect to the large stator slot (26) in the middle;
(3) each pole of each group of the stator slot groups (2) comprises nine stator slots (26), two middle stator slots (27) and two small stator slots (25), and the distribution of the large stator slots (26), the middle stator slots (27) and the small stator slots (25) is as follows: five large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the five large stator slots (26) are respectively provided with a small stator slot (25), a middle stator slot (27) is arranged between the large stator slot (26) and the small stator slot (25), the small stator slot (25) on one side of the five large stator slots (26) and the small stator slot (25) on the other side of the five large stator slots (26) are symmetrical about the large stator slot (26) in the middle position, and the middle stator slot (27) on one side of the five large stator slots (26) and the middle stator slot (27) on the other side of the five large stator slots (26) are symmetrical about the large stator slot (26) in the middle position;
(4) each pole of each group of the stator slot groups (2) comprises nine stator slots of each phase, wherein each pole of each group of the stator slots comprises a large stator slot (26), four middle stator slots (27) and four small stator slots (25), and the large stator slot (26), the middle stator slot (27) and the small stator slots (25) are distributed as follows: a large stator slot (26) is arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the large stator slot (26), two middle stator slots (27) are respectively arranged between the large stator slot (26) and the small stator slots (25), the two small stator slots (25) on one side of the large stator slot (26) and the two small stator slots (25) on the other side of the large stator slot (26) are symmetrical about the large stator slot (26) in the middle position, and the two middle stator slots (27) on one side of the large stator slot (26) and the two middle stator slots (27) on the other side of the large stator slot (26) are symmetrical about the large stator slot (26) in the middle position;
(5) each pole of each group of the stator slot groups (2) comprises nine stator slots of each phase, wherein the nine stator slots comprise three large stator slots (26), four middle stator slots (27) and two small stator slots (25), and the large stator slots (26), the middle stator slots (27) and the small stator slots (25) are distributed as follows: the three large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of each large stator slot (26), two middle stator slots (27) are respectively arranged between each large stator slot (26) and each small stator slot (25), the small stator slots (25) on one side of each large stator slot (26) and the small stator slots (25) on the other side of each large stator slot (26) are symmetrical about the large stator slot (26) in the middle, and the two middle stator slots (27) on one side of each large stator slot (26) and the two middle stator slots (27) on the other side of each large stator slot (26) are symmetrical about the large stator slot (26) in the middle;
(6) each pole of each group of the stator slot groups (2) comprises nine stator slots of each phase, wherein each pole of each group of the stator slots comprises a large stator slot (26), six middle stator slots (27) and two small stator slots (25), and the large stator slot (26), the middle stator slot (27) and the small stator slots (25) are distributed as follows: a large stator groove (26) is arranged in the middle of the stator groove group (2), two sides of the large stator groove (26) are respectively provided with a small stator groove (25), three middle stator grooves (27) are respectively arranged between the large stator groove (26) and the small stator grooves (25), the small stator groove (25) on one side of the large stator groove (26) and the small stator groove (25) on the other side of the large stator groove (26) are symmetrical about the large stator groove (26) in the middle, and the three middle stator grooves (27) on one side of the large stator groove (26) and the three middle stator grooves (27) on the other side of the large stator groove (26) are symmetrical about the large stator groove (26) in the middle.
14. The IE5 three-phase asynchronous motor based on unequal stator slot punching and cast-aluminum rotor as claimed in any one of claims 1 to 13, wherein 8-16 cramp slots for installing cramps are uniformly arranged on the outer annular surface of the second substrate along the circumferential direction of the second substrate, the lower bottom edges of the cramp slots are arranged as straight lines, the upper bottom edges of the cramp slots naturally open along the circumferential direction of the second substrate, a tidying slot is arranged at the bottom of any one of the cramp slots, the tidying slot is rectangular or trapezoidal, the width of the cramp slot is 14-25 mm, the height of the cramp slot is 3-5 mm, and the included angle between the oblique edge of the cramp slot and the bottom edge is 15-25 °.
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