CN113054776A - Uniform magnetic equidirectional high-power-density energy-saving motor - Google Patents
Uniform magnetic equidirectional high-power-density energy-saving motor Download PDFInfo
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- CN113054776A CN113054776A CN201911380995.8A CN201911380995A CN113054776A CN 113054776 A CN113054776 A CN 113054776A CN 201911380995 A CN201911380995 A CN 201911380995A CN 113054776 A CN113054776 A CN 113054776A
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- 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
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- 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
- H02K3/28—Layout of windings or of connections between windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A uniform magnetic equidirectional high-power-density energy-saving motor. The motor stator silicon steel sheet is provided with a wire slot, a winding 1 and a winding 2 are arranged in the wire slot, and two winding coils of the winding 1 and the winding 2 are in a radial bilateral symmetrical winding type. The invention is used for single-phase excitation or three-phase excitation and permanent magnet motors.
Description
The technical field is as follows:
the invention relates to a uniform-magnetism equidirectional high-power-density energy-saving motor.
Background art:
heretofore, when the motor works continuously for a long time, the surface temperature of the shell is generally 75-85 ℃, and the shell temperature of the motor in a special scene is more than 100 ℃. The phenomena of heat generation, hair waving and fever always bother users since the appearance of the motor and cause great energy waste. The method aims to find the root cause of the temperature rise of the motor, improve the generated energy and achieve the aim of saving energy. The principle of the motor and the components and the structure of the stator silicon steel sheet are analyzed, researched and optimized in a large quantity, more than one thousand yuan research and development expenses are invested for eighteen years, the permanent magnet and the excitation motor are tested for thousands of times, and the main cause of the motor fever is found finally: the induction current caused by the uneven distribution of the stator induction magnetic field and the non-synchronization of the magnetic field is not completely in the same direction, so that the heating phenomenon is generated, and the energy waste is caused.
At present, the problem of heating and fever of the motor is solved worldwide, and an external forced cooling method is generally adopted, namely, an air cooling system, a water cooling system and other external systems are adopted to carry out forced cooling, or high-quality and high-value materials are adopted to solve the problem, so that the cost of the whole system of the motor is increased, and a part of energy is consumed.
The invention content is as follows:
the invention aims to provide a uniform-magnetism same-direction high-power-density energy-saving motor which is optimized and modified in the shape, internal components and crystal form of a stator silicon steel sheet and rearranged in a winding.
The above purpose is realized by the following technical scheme:
the uniform-magnetism equidirectional high-power-density energy-saving motor comprises a motor stator silicon steel sheet, wherein a wire slot is formed in the motor stator silicon steel sheet, a winding 1 and a winding 2 are arranged in the wire slot, and two winding coils of the winding 1 and the winding 2 are symmetrically wound in a radial bilateral mode.
The uniform magnetic syntropy high-power-density energy-saving motor is characterized in that induction coils of the motor and stator silicon steel sheets are uniformly arranged and symmetrically and regularly distributed on two radial sides, two winding coils in a wire slot are clear in separation limit, the contact area of the winding coils and the stator silicon steel sheets is large, the average distance between coil wires and the edges of the stator silicon steel sheets is shortened, the average distance between the wires of the two winding coils is consistent with the distance between a rotor and the wires of the two winding coils, and the induction magnetic field of the silicon steel sheets is increased and uniformly distributed.
The uniform-magnetism equidirectional high-power-density energy-saving motor is characterized in that the coil conducting wire is in a radial two-side winding type.
The coil wire winding mode is a single-connection winding mode.
According to the uniform-magnetism same-direction high-power-density energy-saving motor, the distance H between two grooves of a motor stator silicon steel sheet is increased along with the reduction of the number of the grooves, and is in negative correlation with the number of the grooves.
The uniform-magnetism equidirectional high-power-density energy-saving motor is characterized in that the number of the silicon steel sheets of the stator of the motor is 24 or 12.
The motor stator silicon steel sheet is used for single-phase excitation or three-phase excitation and permanent magnet motors.
Has the advantages that:
1. by optimizing and modifying the shape, internal components and crystal form of the stator silicon steel sheet, rearranging the winding and applying the intelligent chip, the invention achieves the following technical effects on the premise of not increasing the cost: (1) the power of the motor with the same volume is increased by 70-100% compared with that of the conventional motor; (2) the temperature of the shell is higher than the ambient temperature by 7 ℃; (3) because the temperature of the machine body is low, the service life of the motor can be doubled; (4) compared with the current market motor, the energy is saved by more than 10 percent, and the operation cost is low; (5) compared with the prior motor of the same power type, the comprehensive cost for producing the motor is reduced by 30-50%.
The invention shortens the arc length of the stator silicon steel sheet occupied by the same winding, solves the problem of lagging current and magnetic field flow, eliminates the phenomenon of direct and reverse collision of the current and the magnetic field flow, greatly reduces the heat generated by the motor without work, and increases the generated energy.
Description of the drawings:
fig. 1 is a diagram of a winding method of a conventional motor.
Fig. 2 is a diagram of a winding method of a motor according to the present invention.
Fig. 3 is a schematic diagram of a single-phase coil of a conventional three-phase four-stage 24-slot motor.
Fig. 4 is a schematic diagram of a single-phase coil of a prior art three-phase four-stage 36-slot motor.
Fig. 5 is a schematic diagram of a single-phase coil of a three-phase four-stage motor according to the present invention.
Fig. 6 is a drawing of a 36-slot motor silicon steel sheet according to the present invention.
Fig. 7 is a drawing of a silicon steel sheet for a 24-slot motor according to the present invention.
Fig. 8 is a drawing of a silicon steel sheet for a 12-slot motor according to the present invention.
Fig. 9 is a drawing of a silicon steel sheet of a 36-slot motor in the prior art.
Fig. 10 is a drawing of a 36-slot motor silicon steel sheet according to the present invention.
Fig. 11 is a drawing of a silicon steel sheet of a conventional 24-slot motor.
Fig. 12 is a drawing of a silicon steel sheet for a 24-slot motor according to the present invention.
The specific implementation mode is as follows:
the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
Example 1:
the uniform-magnetism equidirectional high-power-density energy-saving motor comprises a motor stator silicon steel sheet, wherein a wire slot is formed in the motor stator silicon steel sheet, a winding 1 and a winding 2 are arranged in the wire slot, and two winding coils of the winding 1 and the winding 2 are symmetrically wound in a radial bilateral mode.
At present, two coils of a winding 1 and a winding 2 in a slot on a silicon steel sheet of a stator of a motor are in an internal and external radial overlapping winding type, and the figure 1 is shown as follows; the two coils of the winding 1 and the winding 2 in the slot on the silicon steel sheet of the motor stator are symmetrically wound on two sides in the radial direction, and the figure 2 is shown as follows.
Example 2:
embodiment 1 a homogeneous magnetism syntropy high power density energy-saving motor, inside and outside radial overlapping winding formula winding that current motor used causes the winding coil wire too concentrated, and the coil is little with the silicon steel sheet area of coverage, and the average distance of single winding coil wire is big from the stator silicon steel sheet, and two winding coils are far away from the rotor average distance inconsistent, and the magnetic field that forms after this winding coil circular telegram can not be even, and magnetic field conduction is slow, leads to silicon steel sheet and rotor to easily produce the heat, causes calorific loss. The invention well overcomes the defects and can produce the following good effects:
the induction coils of the motor and the stator silicon steel sheet are uniformly arranged and symmetrically and regularly distributed on two radial sides, the two winding coils in the same groove are clear in separation limit, the contact area of the winding coils and the stator silicon steel sheet is large, the average distance between the coil wires and the edge of the stator silicon steel sheet is shortened, the average distance between the two winding coil wires and a rotor is consistent, a magnetic field is favorably transmitted, the induction magnetic field of the silicon steel sheet is increased and uniformly distributed, the power of the motor can be improved, and the heat loss can be reduced.
Secondly, it is known that each coil of the existing motor is formed by winding two or more spaced stator slots as a frame, the winding method of the invention is a radial two-side separate winding type, the area of each coil covering a stator silicon steel sheet is more than doubled than the area of the existing motor covering the stator silicon steel sheet in a radial overlapping winding type, so that the area of the induced magnetic field of the stator silicon steel sheet is enlarged, and the formed uniform stable magnetic field is transmitted to the rotor of the motor.
Example 3:
in the uniform-magnetism same-direction high-power-density energy-saving motor in embodiment 1, the stator core of the existing motor has the parts of 12 slots, 18 slots, 24 slots, 27 slots, 36 slots, 48 slots, 72 slots, 144 slots, 192 slots (multiples of 3) and the like, for example, the four-stage motor with 36 slots and 24 slots in the three phases has 12 coils and 8 coils in each phase and occupies the positions of 12 slots and 8 slots respectively. As shown in fig. 3 and 4. The two motors listed above are four magnetic poles, and each monopole of the 24-slot four-stage motor has two coils (commonly called double-connected-handle coils), such as winding 1, winding 2, winding 3 and winding 4 in fig. 3 respectively form a same-direction magnetic pole; similarly, each monopole of the 36-slot four-stage motor has three coils (commonly called three-link coils), and as shown in fig. 4, the winding 1, the winding 2, the winding 3 and the winding 4 respectively form a same-direction magnetic pole. The purpose of adopting the winding method of the double-link, triple-link and multi-link coils is to enlarge the contact surface of the induction coil and the silicon steel sheet, so that the waveform of the induction magnetic field of the coil is smooth and the peak is less, but the defects that the motor is easy to generate heat and the heat energy loss occurs are overcome.
According to physics, when a positive current meets a reverse (negative) current, the two completely or partially different directions generate heat, and a strong luminous phenomenon occurs, for example, a circuit short circuit in daily life generates a heating and luminous phenomenon, which is a result caused by collision due to different current directions in the same direction; on the other hand, when the forward magnetic field flow meets the reverse magnetic field flow, heat generation is generated, which is caused by the fact that the directions of the magnetic field flows are different and are in the same direction. The main reason that the winding coil of the motor generates heat is the heat generated by different 'equidirectional' coil currents and different 'equidirectional' electromagnetic current directions of the stator iron core of the motor, and the superposition of the two types of heat is the main source of the temperature rise of the motor and the waste of heat energy. The winding mode of the double-linked, three-linked and multi-linked coils of the motor is why the current of the coils generates different directions and the magnetic field current of the silicon steel sheets generates different directions.
For clarity, we will take an existing three-phase four-pole motor as an example to illustrate, and it is known from the internal structure and rotation process of the motor that the double-winding manner occupies the spatial positions of two stator slots, the arc length of the double-winding manner is 2 × 2 pi r/n (r is the nominal radius of the silicon steel sheets, and n is the number of the silicon steel sheets), and the triple-winding manner occupies the spatial positions of three stator slots, the arc length of the triple-winding manner is 3 × 2 pi r/n (r is the nominal radius of the silicon steel sheets, and n is the number of the silicon steel sheets). The electric motor is a composite body of the motor and the generator, on one hand, electric energy forms a rotating magnetic field through the stator coil to drive the rotor to do work and is the motor; on the other hand, the motor rotor induces four asynchronous or synchronous rotating magnetic poles which are the same as the rotor by the rotating magnetic field induced by the stator coil, and the four magnetic poles of the rotor rotate to cut the stator coil wire, thereby forming a virtual and actual generator. The current generated by the virtual generator and the main power supply current of the coil are in the same direction, so that no heat is generated, and if the current generated by the virtual generator and the main power supply current of the coil are in different directions (generally called as back electromotive force), heat is generated, so that energy loss is caused. The stator coil of the four-stage motor forms four rotating magnetic poles according to a main power supply, the virtual generator correspondingly generates four asynchronous or synchronous rotating magnetic poles along with four rotating magnetic fields of the stator, the four magnetic poles are in an N-S-N-S state or an S-N-S-N state in a circulating and alternating mode, the four moving magnetic poles are two adjacent magnetic poles in opposite directions, and the four moving magnetic poles are in the same direction at intervals. When the arc distance of one magnetic pole of the rotor, such as N pole, from the double or triple of the stator coil and the first coil of the multiple coils to the second coil or the third coil or the multiple coils of the same winding needs time, the longer the arc distance is, the longer the number of the double coils is, and the longer the crossing time is. If the N pole of the rotor turns to the winding 1, the coil 1-1 induces forward current, and the current which is necessarily induced by the coil when the next S pole turns over is reverse current. Because the double-link or triple-link and multi-link coils occupy longer stator silicon steel sheet arcs, when the N pole of the rotor rotates to the tail end of the arc of the 2 nd coil of the winding 1 or the tail end of the arc of the 3 rd coil of the winding 1, the forward current is not finished, the second magnetic pole S of the rotor starts to rotate to the head end of the arc of the coil 1 in the winding 1, the reverse current is induced in the coil, and the forward current and the reverse current collide with each other, so that the coil can quickly generate heat to cause heat loss; similarly, the reason why the heat is generated when the positive and negative magnetic field flows meet in the stator silicon steel sheet is deduced, and the repeated description is omitted here.
The invention changes the winding mode of the stator coil of the existing motor with double connection handles, three connection handles and multiple connection handles into the winding mode with single connection handle, and well overcomes the defects of the existing motor. The arc length of the stator silicon steel sheet occupied by the same winding is shortened, the problem of lagging current and magnetic field flow is solved, the phenomenon of direct and reverse collision of the current and the magnetic field flow is eliminated, the heat generated by the motor without work is greatly reduced, and the generated energy is increased, as shown in the attached figure 5.
Example 4:
as can be seen from fig. 6, 7 and 8, the distance H between two slots of the stator silicon steel sheet of the motor increases along with the decrease of the number of the slots, and is inversely related to the number of the slots. That is, the slot pitch H is the smallest for the 36 slot motor and the largest for the 12 slot motor, of the three motors listed below. The silicon steel sheet groove interval H is big, and the magnetic field formation is even not concentrated, and the shape is perfect moreover, and magnetic field motion magnetic resistance is little and is difficult for producing heat loss.
Example 5:
according to the uniform-magnetism same-direction high-power-density energy-saving motor in the embodiment 1, at present, most of existing small three-phase motors are of the models of 36 slots of silicon steel sheets of stators, 9 in the attached drawings, 24 slots of the models of the drawings, 11 in the attached drawings, and 12 slots of the models of the drawings, 1 are. The invention reduces the figure 10 of 36 slots of silicon steel sheets of a motor stator to the figure 12 of 24 slots, and optimally to the figure 2 of 12 slots, and the design idea of reducing the slots is against the traditional design idea. According to the measurement, under the conditions of the same power, the same volume, the same component, the same winding mode and the like, the heat loss of 24 slots is less than that of 36 slots, and the power of the motor is increased; the heat loss of the 12-slot is smaller than that of the 24-slot, the power generation is optimal, and the rotating effect is good. The medium-sized and large-sized motors can be completed by multiplying the design of the stator silicon steel sheet 12 grooves or 24 grooves.
Claims (7)
1. The uniform-magnetism equidirectional high-power-density energy-saving motor comprises a motor stator silicon steel sheet and is characterized in that a wire slot is formed in the motor stator silicon steel sheet, a winding 1 and a winding 2 are arranged in the wire slot, and two winding coils of the winding 1 and the winding 2 are symmetrically wound in a radial bilateral mode.
2. The uniform magnetic equidirectional high-power-density energy-saving motor as claimed in claim 1, wherein the induction coils of the motor and the silicon steel sheets of the stator are uniformly arranged and symmetrically and regularly distributed on two radial sides, the separation limit of the two winding coils in the wire slot is clear, the contact area between the winding coils and the silicon steel sheets of the stator is large, the average distance between the coil wires and the edges of the silicon steel sheets of the stator is shortened, and the average distance between the wires of the two winding coils is consistent with the distance between the rotors, so that the induction field of the silicon steel sheets is increased and uniformly distributed.
3. The uniform magnetic equidirectional high-power-density energy-saving motor as claimed in claim 2, wherein the coil wire is of a radial two-side winding type.
4. The uniform magnetic equidirectional high-power-density energy-saving motor as claimed in claim 3, wherein the winding mode of the coil conducting wire is a single-connection winding mode.
5. The uniform magnetic equidirectional high-power-density energy-saving motor as claimed in claim 1, wherein the spacing H between two slots of the silicon steel sheet of the stator of the motor increases along with the decrease of the number of the slots and is inversely related to the number of the slots.
6. The uniform-magnetism equidirectional high-power-density energy-saving motor as claimed in claim 1, wherein the number of the slots of the silicon steel sheets of the stator of the motor is 24 slots or 12 slots.
7. The uniform-magnetism same-direction high-power-density energy-saving motor as claimed in claim 1, wherein the motor stator silicon steel sheet is used for single-phase excitation or three-phase excitation and permanent magnet motors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911380995.8A CN113054776A (en) | 2019-12-27 | 2019-12-27 | Uniform magnetic equidirectional high-power-density energy-saving motor |
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| CN201911380995.8A CN113054776A (en) | 2019-12-27 | 2019-12-27 | Uniform magnetic equidirectional high-power-density energy-saving motor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0394526A1 (en) * | 1989-04-27 | 1990-10-31 | Siemens Aktiengesellschaft | Rotating field machine |
| CN101488682A (en) * | 2009-02-27 | 2009-07-22 | 环一军 | Constant voltage outputting mixed excitation type magnetic flux switching wind power generator |
| CN101682238A (en) * | 2007-05-18 | 2010-03-24 | 纳幕尔杜邦公司 | Process for refurbishing an electrical device component comprising a laminate electrical insulation part and electrical device component comprising said part |
| CN102969816A (en) * | 2012-12-14 | 2013-03-13 | 山东理工大学 | Automobile three-phase short-chord winding permanent alternating current (AC) generator |
| CN107453498A (en) * | 2017-08-28 | 2017-12-08 | 广东美芝制冷设备有限公司 | Stator core, motor stator, motor and compressor |
| CN207968115U (en) * | 2018-01-17 | 2018-10-12 | 广东美芝制冷设备有限公司 | Stator, single phase induction motor and compressor |
-
2019
- 2019-12-27 CN CN201911380995.8A patent/CN113054776A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0394526A1 (en) * | 1989-04-27 | 1990-10-31 | Siemens Aktiengesellschaft | Rotating field machine |
| CN101682238A (en) * | 2007-05-18 | 2010-03-24 | 纳幕尔杜邦公司 | Process for refurbishing an electrical device component comprising a laminate electrical insulation part and electrical device component comprising said part |
| CN101488682A (en) * | 2009-02-27 | 2009-07-22 | 环一军 | Constant voltage outputting mixed excitation type magnetic flux switching wind power generator |
| CN102969816A (en) * | 2012-12-14 | 2013-03-13 | 山东理工大学 | Automobile three-phase short-chord winding permanent alternating current (AC) generator |
| CN107453498A (en) * | 2017-08-28 | 2017-12-08 | 广东美芝制冷设备有限公司 | Stator core, motor stator, motor and compressor |
| CN207968115U (en) * | 2018-01-17 | 2018-10-12 | 广东美芝制冷设备有限公司 | Stator, single phase induction motor and compressor |
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Application publication date: 20210629 |