CN218976532U - Seventy-two slot permanent magnet motor - Google Patents
Seventy-two slot permanent magnet motor Download PDFInfo
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- CN218976532U CN218976532U CN202223447079.1U CN202223447079U CN218976532U CN 218976532 U CN218976532 U CN 218976532U CN 202223447079 U CN202223447079 U CN 202223447079U CN 218976532 U CN218976532 U CN 218976532U
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Abstract
The utility model relates to the technical field of motors, and provides a seventy-two-slot permanent magnet motor. Comprising the following steps: the stator comprises a stator sheet, seventy-two coil inserting grooves which are circumferentially arranged on the stator sheet in an array manner are wound with a plurality of groups of armature windings, and the rotor body is a quadrupole rotor body or an octapole rotor body; the armature controller comprises a plurality of switching devices which are in circuit connection with the armature windings. Through the three-phase windings matched with different pole grooves, various counter electromotive forces can be obtained, and the permanent magnet motor has various fundamental frequency rotating speeds under the condition of the same voltage.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a seventy-two-slot permanent magnet motor.
Background
The permanent magnet synchronous motor mainly comprises a stator, a rotor, an end cover and other parts, wherein the stator is formed by laminating laminations so as to reduce iron loss generated when the motor operates, and a three-phase alternating current winding, called an armature, is arranged in the stator. The rotor may be made in solid form or may be pressed from laminations with permanent magnet material mounted thereon.
When the conventional permanent magnet motor operates at a speed higher than the rated rotating speed of the motor, the motor driver is required to be used for carrying out field weakening control on the permanent magnet motor, so that the energy consumption of the permanent magnet motor is increased, and a plurality of motors with different powers and a plurality of drivers are usually used for solving the energy consumption problem in the prior art so as to respectively correspond to different requirements of working conditions. This approach is inconvenient to use and increases the cost of the enterprise.
Disclosure of Invention
The utility model provides a seventy-two-slot permanent magnet motor which is used for solving the defect that the existing permanent magnet motor can meet the requirements of various working condition rotating speeds only by configuring a plurality of drivers, and realizing the requirement of various working condition rotating speeds by only one driver and an armature controller.
The utility model provides a seventy-two slot permanent magnet motor, comprising:
the stator body comprises a stator core formed by laminating a plurality of stator sheets, seventy-two coil inserting grooves are circumferentially arranged on the stator sheets in an array manner, a plurality of groups of armature windings are wound on the stator core through the coil inserting grooves, and the armature windings are three-phase windings;
the rotor body is formed by laminating a plurality of rotor sheets, and is a quadrupole rotor body or an octapole rotor body; and
the armature controller comprises a plurality of switching devices, and the switching devices are in star circuit connection with phase windings of three-phase windings.
According to the seventy-two slot permanent magnet motor provided by the utility model, the armature winding comprises a plurality of in-phase slot windings, out-phase slot windings, in-phase slots and out-phase slot mixed windings, wherein the in-phase slot windings, the out-phase slot windings, the in-phase slots and the out-phase slot mixed windings are respectively arranged in a plurality of layers in a peer-to-peer mode, the different slot pole cooperation formed by tooth slots and coils of each phase winding is reduced, and three phases and multiple phases of the three-phase and out-phase slot windings are independently operated.
According to the seventy-two slot permanent magnet motor provided by the utility model, the armature winding comprises a first-level armature winding, a second-level armature winding and twenty-four slot in-phase and out-phase slot windings which are formed by twelve slot out-phase slot windings and twelve slot in-phase slot windings at different levels;
the first-level armature winding comprises a three-phase twenty-four-slot out-of-phase slot winding, a forty-eight-slot in-phase slot winding and a seventy-two-slot in-phase out-of-phase slot winding;
the second-level armature winding comprises a three-phase twelve-slot out-of-phase slot winding, a twenty-four-slot in-phase slot winding and a thirty-six-slot in-phase out-of-phase slot winding.
According to the seventy-two-slot permanent magnet motor provided by the utility model, the three-phase windings are circularly arranged on the wire embedding slots in a double-layer lap winding manner, and the phase windings of each three-phase winding are in star connection or delta connection.
According to the seventy-two-slot permanent magnet motor provided by the utility model, the included angle between two end points at the positions, close to the outer periphery, of two slot edges of the coil inserting slot and a connecting line of a circle center is 3.03-3.35 degrees, the slot edges of two adjacent coil inserting slots are parallel, and the ratio between the outer diameter and the inner diameter of the stator piece is 1.44-1.59.
According to the seventy-two-slot permanent magnet motor provided by the utility model, the rotor sheet of the octapole rotor body is provided with eight magnetic steel slots in a circumferential array, two long sides of each magnetic steel slot are parallel, the length of the upper slot side near the periphery is larger than that of the lower slot side opposite to the magnetic steel slot, the included angle between the connecting line of the two end points of the upper slot side of each magnetic steel slot and the circle center is 41.91-46.32 degrees, and the included angle between the connecting line of the two end points of the lower slot side of each magnetic steel slot and the circle center is 41.87-46.27 degrees.
According to the seventy-two-slot permanent magnet motor provided by the utility model, four magnetic steel slots are arranged on a rotor sheet of the quadrupole rotor body in a circumferential array, two long sides of each magnetic steel slot are parallel, the length of an upper slot side near the periphery is smaller than that of a lower slot side opposite to the magnetic steel slot, concave angles are arranged on the periphery of the rotor sheet and at the intersection point of two adjacent magnetic steel slots, and the included angle between two end points of the long sides of each magnetic steel slot near the periphery and the connecting line of the circle center of the rotor sheet is 76.91-85.01 degrees, and a magnetism isolating bridge is arranged on each magnetic steel slot.
According to the seventy-two slot permanent magnet motor provided by the utility model, the number of magnetic poles of the rotor body and the number of coil inserting slots of the stator body meet the condition that z/2pm=q is a positive integer, wherein z is the number of coil inserting slots of the stator body, p is the pole pair number, and m is the phase number.
According to the seventy-two-slot permanent magnet motor provided by the utility model, the number of winding branches of the different-pole slot matched motor is more than one path, and the winding coil pitches of the different-pole slot matched motor are 1-2, 1-3, 1-4, 1-5, 1-6 or the combination of the increasing numbers of the winding branches.
The seventy-two slot permanent magnet motor comprises a stator body, a rotor body and an armature controller, wherein the stator body comprises a stator core formed by laminating a plurality of stator sheets, seventy-two coil inserting slots are circumferentially arranged on the stator sheets in an array manner, a plurality of groups of armature windings are wound on the stator core through the coil inserting slots, the armature windings adopt three-phase windings, and multiple counter electromotive forces can be obtained through the three-phase windings matched with different slots, so that the permanent magnet motor has multiple fundamental frequency rotating speeds under the condition of the same voltage; the rotor body is formed by laminating a plurality of rotor sheets, and is a quadrupole rotor body or an octapole rotor body; the armature controller comprises a plurality of switching devices, the plurality of switching devices are connected with phase windings of all three-phase windings in a star circuit, preset circuit connection is performed among phase windings of all armature windings, a switching circuit is preset among all armature windings, the armature controller determines and selects an armature winding to be adopted according to data fed back by a load side sensor and conducts a circuit of the armature winding, and then a motor driver conducts motor parameter exchange and driving motor operation. The requirements of different high-speed and high-efficiency operation are met at various rated speeds under the regulation and control of the armature controller, the conventional driver weak magnetic control is not needed, a plurality of motors and a plurality of motor drivers are also not needed, the high-speed operation effect of the plurality of motors is realized, and the fault tolerance function of the motors is increased. The utility model has positive effects on the application of an electric propulsion system, a new energy power generation and storage system, a new energy electric vehicle power system, a big data storage center and intelligent automatic non-intermittent operation equipment of the aviation navigation device.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a stator armature winding configuration of a seventy-two slot permanent magnet motor provided by the utility model;
fig. 2 is a schematic circuit diagram of an armature controller switching device of the seventy-two slot permanent magnet motor provided by the utility model;
FIG. 3 is an enlarged view at A of FIG. 2 provided in the present utility model;
FIG. 4 is an enlarged view at B of FIG. 2 provided in the present utility model;
fig. 5 is a schematic structural diagram of a stator piece of a seventy-two slot permanent magnet motor provided by the utility model;
fig. 6 is a schematic diagram of an octal rotor structure of a seventy-two slot permanent magnet motor provided by the utility model;
fig. 7 is a schematic diagram of a four-pole rotor structure of a seventy-two slot permanent magnet motor provided by the utility model.
Reference numerals:
101. twenty-four slot out-of-phase slot windings; 102. forty-eight slot in-phase slot windings; 103. seventy-two slot in-phase and out-of-phase slot windings; 104. twelve slot out of phase slot windings; 105. twenty-four slot in-phase slot windings; 106. thirty-six slot in-phase and out-of-phase slot windings; 107. twenty-four slot in-phase and out-of-phase slot windings; 108. an armature controller; 109. wire embedding grooves; 110. and a magnetic steel groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a seventy-two slot permanent magnet motor.
In an embodiment of the present utility model, as shown in fig. 1 to 4, a seventy-two slot permanent magnet motor includes: the stator body comprises a stator core formed by laminating a plurality of stator sheets, seventy-two coil inserting grooves 109 are circumferentially arranged on the stator sheets in an array manner, a plurality of groups of armature windings are wound on the stator core through the coil inserting grooves 109, and the armature windings are three-phase windings; the rotor body is formed by laminating a plurality of rotor sheets, and is a quadrupole rotor body or an octapole rotor body; the armature controller 108 includes a plurality of switching devices that are star-connected with the phase windings of the respective three-phase windings. Through the reasonable utilization of seventy-two rule grooves 109, the stator body can be wound with independent multi-level three-phase windings, and specific level numbers are set according to actual conditions and are not repeated here. Since the slot pole ratio and the coil number difference of the armature windings of each level make the back electromotive force of the armature windings of each level different, a plurality of different rated rotational speeds can be obtained under the condition of inputting the same voltage. Then, through the regulation and control of the armature controller 108 on the lines of the three-phase windings of each level, the eight-pole rotor or the four-pole rotor and various armature windings are matched to operate, and the motor can obtain various rated rotational speeds, so that the requirements of different high-speed and high-efficiency operation are met, the conventional driver field weakening control is not needed, multiple motors and multiple motor drivers are not needed, the high-speed operation effect of the multiple motors is realized, and the fault tolerance function of the motors is increased.
Specifically, in the present application, the seventy-two slot permanent magnet motor may be a permanent magnet motor or a permanent magnet generator. The present application describes a seventy-two slot permanent magnet motor as a permanent magnet motor, and other embodiments may be implemented with reference to this embodiment.
Referring to fig. 1, in accordance with some embodiments of the present utility model, an armature winding includes a plurality of layers of in-phase slot windings, out-of-phase slot windings, in-phase slots, and out-of-phase slot hybrid windings that each reduce the number of different slot pole engagements made with the slots and coils of each phase winding, respectively, and that each of the plurality of layers of three phases and their multiple phases operates independently. The plurality of independent armature windings with different tooth space ratios and coil numbers are arranged, so that different electromotive forces can be obtained inside the motor, and the motor can obtain various rated speeds.
Referring to fig. 1, in some embodiments according to the utility model, the armature winding has seventy-two coils, forty-eight in-phase slot coils, twenty-four out-of-phase slot coils, each having two terminals at the end and end, distributed within seventy-two wire-insertion slots 109. The serial numbers 1-72 in the figure are the serial numbers of each coil in seventy-two coils respectively, the coil solid line is an in-phase slot coil, the coil discontinuous line is an out-phase slot coil, and U, V, W in the embedded slot respectively represent U-phase, V-phase and W-phase windings.
The armature windings comprise a first-level armature winding, a second-level armature winding and twenty-four-slot in-phase and out-phase slot windings 107 which are formed by twelve-slot out-phase slot windings 105 and twelve-slot in-phase slot windings of different levels; the first-level armature winding comprises a three-phase twenty-four-slot out-of-phase slot winding 101, a forty-eight-slot in-phase slot winding 102 and a seventy-two-slot in-phase out-of-phase slot winding 103; the second level armature winding includes a three-phase twelve-slot out-of-phase slot winding 104, a twenty-four-slot in-phase slot winding 105, and a thirty-six-slot in-phase out-of-phase slot winding 106.
Wherein: twenty-four slot out-of-phase slot windings 101, each phase winding comprises eight coils, twenty-four coils are divided into u, v, w three-phase windings, and the serial sequence of each phase coil is:
the u-phase winding includes: u3, u12, u21, u30, u39, u48, u57, u66 coils, v phase windings comprising: v9, v18, v27, v36, v45, v54, v63, v72 coils,
the w-phase winding includes: w6, w15, w24, w33, w42, w51, w60, w69 coils.
Forty-eight slots in-phase slot armature winding 102, each phase winding comprising sixteen coils, forty-eight coils divided into U, V, W three-phase windings, each phase coil being in series order of:
the U-phase winding includes: u1, U2, U10, U11, U19, U20, U28, U29, U37, U38, U46, U47, U55, U56, U64, U65 coils,
the V-phase winding includes: v7, V8, V16, V17, V25, V26, V34, V35, V43, V44, V52, V53, V61, V62, V70, V71 coils,
the W-phase winding includes: w4, W5, W13, W14, W22, W23, W31, W32, W40, W41, W49, W50, W58, W59, W67, W68 coils.
Seventy-two slot in-phase and out-of-phase slot windings 103, each phase winding comprises twenty-four coils, seventy-two coils are divided into Uu, vv and Ww three-phase windings, and the serial sequence of each phase coil is as follows:
the Uu phase winding includes: u1, U2, U3, U10, U11, U12, U19, U20, U21, U28, U29, U30, U37, U38, U39, U46, U47, U48, U55, U56, U57, U64, U65, U66 coils,
the Vv phase winding includes: v7, V8, V9, V16, V17, V18, V25, V26, V27, V34, V35, V36, V43, V44, V45, V52, V53, V54, V61, V62, V63, V70, V71, V72,
the Ww phase winding includes: w4, W5, W6, W13, W14, W15, W22, W23, W24, W31, W32, W33, W40, W41, W42, W49, W50, W51, W58, W59, W60, W67, W68, W69 coils.
Twelve-slot out-of-phase slot windings 104, each phase winding comprising four coils, the twelve coils being divided into u, v, w three-phase windings, the series order of each phase coil being:
the u-phase winding includes: u3, u21, u39, u57 coils,
the v-phase winding includes: v9, v27, v45, v63 coils,
the w-phase winding includes: w6, w24, w42, w60 coils.
Twenty-four slot in-phase slot windings 105, each phase winding comprising eight coils, twenty-four coils divided into U, V, W three-phase windings, the series sequence of each phase coil being:
the U-phase winding includes: u1, U10, U19, U28, U37, U46, U55, U64 coils,
the V-phase winding includes: v7, V16, V25, V34, V43, V52, V61, V70 coils,
the W-phase winding includes: w4, W13, W22, W31, W40, W49, W58, W67 coils.
Thirty-six slot in-phase and out-of-phase slot windings 106, each phase winding comprising twelve coils, thirty-six coils divided into Uu, vv, ww three-phase windings, the series sequence of each phase coil being:
the Uu phase winding includes: u1, U3, U10, U19, U21, U28, U37, U39, U46, U55, U57, U64 coils,
the Vv phase winding includes: v7, V9, V16, V25, V27, V34, V43, V45, V52, V61, V63, V70 coils,
the Ww phase winding includes: w4, W6, W13, W22, W24, W31, W40, W42, W49, W58, W60, W67 coils.
Twenty-four slot in-phase and out-of-phase slot windings 107, each phase winding comprises eight coils, twenty-four coils are divided into Uu, vv and Ww three-phase windings, and the serial sequence of each phase coil is as follows:
the Uu phase winding includes: u3, U10, U21, U28, U39, U46, U57, U64 coils, the Vv phase winding comprising: v9, V16, V27, V34, V45, V52, V63, V70 coils, the Ww phase winding comprising: w6, W13, W24, W31, W42, W49, W60, W67 coils.
Referring to fig. 2-4, in operation of the first level twenty-four slot out-of-phase slot winding 101, the three-phase twenty-four coil conduction relationship is:
u-phase winding, -u 3-u12-u21-u30-u39-u48-u57-u 66-,
v-phase windings, -v 9-v18-v27-v36-v45-v54-v63-v 72-,
w-phase winding, -w 6-w15-w24-w33-w42-w51-w60-w 69-.
The coils of each phase of the twenty-four slot out-phase slot winding 101 are connected in series by a switching device of the armature controller 108 to conduct a circuit, and the wiring terminals of the tail parts of the u-phase winding, the v-phase winding and the w-phase winding are connected in a star-shaped sealing point to form an independent three-phase twenty-four slot out-phase slot winding 101.
When the first-level forty-eight slot in-phase slot winding 102 works, the forty-eight coil conduction relationship is:
the U-phase windings are wound in a U-phase configuration,
—U1-U2-U10-U11-U19-U20-U28-U29-U37-U38-U46
-U47-U55-U56-U64-U65—，
the V-phase winding is wound in a V-phase,
—V7-V8-V16-V17-V25-V26-V34-V35-V43-V44-V52
-V53-V61-V62-V70-V71—，
the W-phase winding is wound in a winding,
—W4-W5-W13-W14-W22-W23-W31-W32-W40-W41-W49
-W50-W58-W59-W67-W68—。
the coils of the forty-eight slot in-phase slot winding 102 are connected in series by a switching device of the armature controller 108 to conduct a circuit, and the wiring terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected by star-shaped sealing points to form an independent three-phase forty-eight slot in-phase slot winding 102.
When the first-level seventy-two-slot in-phase and out-of-phase slot winding 103 works, seventy-two coils have the following conduction relations:
uu phase windings:
—U1-U2-u3-U10-U11-u12-U19-U20-u21-U28-U29-u30-U37-U38-u39-U46-U47-u48-U55-U56-u57-U64-U65-u66—，
vv phase winding:
—V7-V8-v9-V16-V17-v18-V25-V26-v27-V34-V35-v36-V43-V44-v45-V52-V53-v54-V61-V62-v63-V70-V71-v72—，
ww phase windings:
—W4-W5-w6-W13-W14-w15-W22-W23-w24-W31-W32-w33-W40-W41-w42-W49-W50-w51-W58-W59-w60-W67-W68-w69—。
the coils of each phase of the seventy-two-phase and out-phase slot winding 103 are connected in series by a switching device of the armature controller 108 to conduct a circuit, and the terminals at the tail parts of the Uu-phase winding, the Vv-phase winding and the Ww-phase winding are connected in a star-shaped sealing way to form an independent three-phase seventy-two-phase and out-phase slot winding 103.
When the second-level twelve-slot out-of-phase slot armature winding works, the conduction relation of twelve coils is as follows:
u-phase winding: -u 3-u21-u39-u 57-,
v phase winding: -v 9-v27-v45-v 63-,
w-phase winding: -w 6-w24-w42-w 60-.
Each phase coil of the twelve-slot out-phase slot winding 104 is connected in series by a switching device of the armature controller 108 to conduct a circuit, and the wiring terminals of the tail parts of the u-phase winding, the v-phase winding and the w-phase winding are connected in a star-shaped sealing point to form an independent three-phase twelve-slot out-phase slot winding 104.
When the second-level twenty-four-slot in-phase slot winding works, twenty-four coils are in a conduction relationship that:
u-phase winding: U1-U10-U19-U28-U37-U46-U55-U64-,
v-phase winding: V7-V16-V25-V34-V43-V52-V61-V70-,
w-phase winding: -W4-W13-W22-W31-W40-W49-W58-W67-.
The coils of the twenty-four slot in-phase slot windings 105 are connected in series by a switching device of the armature controller 108 to conduct a circuit, and the wiring terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in a star-shaped sealing point to form an independent three-phase twenty-four slot in-phase slot winding 105.
When the second-level thirty-six-slot in-phase and out-phase slot winding works, the conduction relation of the thirty-six coils is as follows:
uu phase windings:
—U1-u3-U10-U19-u21-U28-U37-u39-U46-U55-u57-U64—，
vv phase winding:
—V7-v9-V16-V25-v27-V34-V43-v45-V52-V61-v63-V70—，
ww phase windings:
—W4-w6-W13-W22-w24-W31-W40-w42-W49-W58-w60-W67—。
the coils of each phase of the thirty-six-slot in-phase and out-phase slot winding 106 are connected in series by a switching device of the armature controller 108 to conduct a circuit, and terminals at the tail parts of the Uu phase winding, the Vv phase winding and the Ww phase winding are connected in a star-shaped sealing point to form an independent three-phase thirty-six-slot in-phase and out-phase slot winding 106.
Twenty-four-slot in-phase and out-phase slot windings formed by twelve-slot out-phase slot windings and twelve-slot in-phase slot windings at different levels work, and twenty-four coils are in conduction relation:
uu phase windings: -U3-U10-U21-U28-U39-U46-U57-U64-,
vv phase winding: V9-V16-V27-V34-V45-V52-V63-V70-,
ww phase windings: -W6-W13-W24-W31-W42-W49-W60-W67-.
The coils of each phase of the twenty-four-slot in-phase and out-phase slot winding 107 are connected in series by a switching device of the armature controller 108 to conduct a circuit, and the terminals at the tail parts of the Uu phase winding, the Vv phase winding and the Ww phase winding are connected in a star-shaped sealing point to form an independent three-phase twenty-four-slot in-phase and out-phase slot winding 107.
Referring to fig. 5, according to some embodiments of the present utility model, an included angle between two end points of the adjacent outer circumferences of two slot sides of the wire embedding slot 109 and a connecting line of a circle center is 3.03 degrees to 3.35 degrees, the slot sides of two adjacent wire embedding slots 109 are parallel, and a ratio between an outer diameter and an inner diameter of the stator piece is 1.44 to 1.59. Alternatively, the included angle between the two end points at the near outer circumferences of the two slot edges of the rule slot 109 and the center line may be 3.1 degrees, 3.15 degrees, 3.2 degrees, 3.25 degrees, 3.3 degrees, or the like; the ratio between the outer diameter and the inner diameter of the stator piece may be 1.48, 1.50, 1.55, etc., and is not particularly limited herein, and may be adjusted as needed.
Referring to fig. 6, according to some embodiments of the present utility model, eight magnetic steel grooves 110 are arranged on a rotor sheet of an octapole rotor body in a circumferential array, two long sides of each magnetic steel groove 110 are parallel, an upper groove side length near the periphery is greater than a lower groove side length opposite to the upper groove side length, an included angle between two end points of the upper groove side of each magnetic steel groove 110 and a connecting line of a circle center is 41.91 degrees-46.32 degrees, and an included angle between two end points of the lower groove side of each magnetic steel groove 110 and the connecting line of the circle center is 41.87 degrees-46.27 degrees. A magnetism isolating groove is arranged between two adjacent magnetic steel grooves 110. Alternatively, the included angle between the two end points of the upper groove edge of the magnetic steel groove 110 and the connecting line of the circle center can be 42 degrees, 43 degrees, 44 degrees, 45 degrees, 46 degrees and the like; the included angles between the two end points of the lower groove edge of the magnetic steel groove 110 and the connecting line of the circle center can be 42 degrees, 43 degrees, 44 degrees, 45 degrees, 46 degrees and the like, and the included angles are not particularly limited and can be adjusted according to requirements.
Referring to fig. 7, according to some embodiments of the present utility model, four magnetic steel grooves 110 are arranged on a rotor sheet of a quadrupole rotor body in a circumferential array, two long sides of the magnetic steel grooves 110 are parallel, the length of an upper groove side near the periphery is smaller than that of a lower groove side opposite to the magnetic steel grooves, concave angles are respectively arranged on the periphery of the rotor sheet and at the intersection point of two adjacent magnetic steel grooves 110, the included angle between two end points of the long sides of the outer Zhou Jin magnetic steel grooves and the connecting line of the circle center of the rotor sheet is 76.91-85.01 degrees, and a magnetism isolating bridge is arranged on each magnetic steel groove. The magnetic steel groove is divided into three sections by the magnetism isolating groove, and a plurality of lightening holes are uniformly formed in the middle of the rotor sheet, and the lightening holes can effectively lighten the weight of the rotor sheet without affecting the work of the rotor sheet.
Referring to fig. 1, in some embodiments according to the utility model, the number of poles of the rotor body and the number of wire-insertion slots 109 of the rotor body meet the condition that z/2pm=q is a positive integer, where z is the number of wire-insertion slots 109 of the rotor body, p is the pole pair number, and m is the phase number.
Referring to fig. 1-4, in some embodiments according to the utility model, the number of winding branches of the different pole-slot matched motor is more than one, either in parallel or in series, and the winding coil pitch of the different pole-slot matched motor is 1-2, 1-3, 1-4, 1-5, 1-6, or a combination between increasing numbers thereof.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. A seventy-two slot permanent magnet motor, comprising:
the stator body comprises a stator core formed by laminating a plurality of stator sheets, seventy-two coil inserting grooves are circumferentially arranged on the stator sheets in an array manner, a plurality of groups of armature windings are wound on the stator core through the coil inserting grooves, and the armature windings are three-phase windings;
the rotor body is formed by laminating a plurality of rotor sheets, and is a quadrupole rotor body or an octapole rotor body; and
the armature controller comprises a plurality of switching devices, and the switching devices are in star circuit connection with phase windings of three-phase windings.
2. The seventy-two slot permanent magnet machine of claim 1 wherein the armature winding comprises a plurality of layers of in-phase slot windings, out-of-phase slot windings, in-phase slots and out-of-phase slot hybrid windings that each reduce the number of different slot pole engagements made with the slots and coils of each phase winding, respectively, and wherein the plurality of layers of three phases and their phases operate independently.
3. The seventy-two slot permanent magnet machine of claim 1 or 2, wherein the armature winding comprises a first level armature winding, a second level armature winding, and twenty-four slot in-phase out-of-phase slot windings formed by twelve slot out-of-phase slot windings of different levels together with twelve slot in-phase slot windings;
the first-level armature winding comprises a three-phase twenty-four-slot heterogeneous slot winding, a forty-eight-slot in-phase slot winding and a seventy-two-slot homodromous and anisotropic slot winding;
the second-level armature winding comprises a three-phase twelve-slot out-of-phase slot winding, a twenty-four-slot in-phase slot winding and a thirty-six-slot in-phase out-of-phase slot winding.
4. A seventy-two slot permanent magnet machine according to claim 3, wherein the three-phase windings are wound in double-layer lap-wound loops around the wire-embedding slots, with a star connection or delta connection between the phase windings of each of the three-phase windings.
5. The seventy-two slot permanent magnet machine of claim 1, wherein an included angle between two end points of the two slot edges of the rule slot near the outer periphery and a connecting line of a circle center is 3.03 degrees to 3.35 degrees, the slot edges of two adjacent rule slots are parallel, and the ratio between the outer diameter and the inner diameter of the stator piece is 1.44 to 1.59.
6. The seventy-two slot permanent magnet motor of claim 1, wherein eight magnetic steel slots are arranged on the rotor sheet of the octapole rotor body in a circumferential array, two long sides of the magnetic steel slots are parallel, the length of an upper slot side near the periphery is larger than that of a lower slot side opposite to the magnetic steel slots, an included angle between two end points of the upper slot side of the magnetic steel slots and a connecting line of a circle center is 41.91-46.32 degrees, and an included angle between two end points of the lower slot side of the magnetic steel slots and the connecting line of the circle center is 41.87-46.27 degrees.
7. The seventy-two slot permanent magnet motor of claim 1, wherein four magnetic steel slots are arranged on the rotor sheet of the quadrupole rotor body in a circumferential array, two long sides of the magnetic steel slots are parallel, the length of an upper slot side near the periphery is smaller than that of a lower slot side opposite to the magnetic steel slots, concave angles are arranged on the periphery of the rotor sheet and at the intersection point of two adjacent magnetic steel slots, the included angle between two end points of the long sides of the magnetic steel slots near the periphery and the connecting line of the circle center of the rotor sheet is 76.91-85.01 degrees, and a magnetism isolating bridge is arranged on the magnetic steel slots.
8. The seventy-two slot permanent magnet machine of claim 1, wherein the number of poles of the rotor body and the number of slots of the stator body meet a positive integer condition of z/2pm = q, where z is the number of slots of the stator body, p is the pole pair number, and m is the number of phases.
9. The seventy-two slot permanent magnet motor of claim 1, wherein the number of winding branches of the different-pole slot-matched motor is more than one, either in parallel or in series, and the winding coil pitch of the different-pole slot-matched motor is 1-2, 1-3, 1-4, 1-5, 1-6, or a combination between increasing numbers thereof.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223447079.1U CN218976532U (en) | 2022-12-22 | 2022-12-22 | Seventy-two slot permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223447079.1U CN218976532U (en) | 2022-12-22 | 2022-12-22 | Seventy-two slot permanent magnet motor |
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| Publication Number | Publication Date |
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| CN218976532U true CN218976532U (en) | 2023-05-05 |
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| CN202223447079.1U Active CN218976532U (en) | 2022-12-22 | 2022-12-22 | Seventy-two slot permanent magnet motor |
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| CN (1) | CN218976532U (en) |
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