Permanent magnet motor stator winding and permanent magnet motor
By setting different linear windings in the stator slot of the permanent magnet motor and adopting the topological structure of concentric windings, the problem of difficulty in reducing the AC, DC and core losses of the permanent magnet motor at the same time in the prior art is solved, and more efficient motor operation and lower losses are achieved.
CN119727173APending Publication Date: 2025-03-28ZHEJIANG UNIV +1
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Patent Information
- Application Number
- CN202510245722.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The prior art is difficult to reduce the AC, DC and core losses of permanent magnet motors without significantly increasing the manufacturing cost and process difficulty.
Method used
Stator windings with different linear types are used in the stator groove, and line types with better suppression of AC loss are used near the rotor, such as Leeds wire or round copper wire, and flat copper wire windings are used far away from the rotor, and the topology of one of the windings is set as concentric windings.
Benefits of technology
The eddy current loss of the winding is significantly suppressed, the sine of the total armature magnetomotive force is improved, the air gap magnetic density harmonics is reduced, the motor operation efficiency is improved and the loss is reduced.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a permanent magnet motor stator winding and a permanent magnet motor, the permanent magnet motor comprises a rotor, a stator core and a stator winding, the surface of the stator core is provided with a stator slot, the stator slot is internally provided with at least two sets of stator windings adopting different line types, and the topological structures of different sets of stator windings are not completely the same. Wherein the topological structure of at least one set of stator winding adopts a concentric winding; the inhibition effect of the line type adopted by the stator winding close to the rotor in the stator groove on the alternating current loss is better than that of the line type adopted by the stator winding far away from the rotor in the stator groove. According to the invention, the advantages of various types of line types can be fully utilized, and the alternating current loss of the winding is remarkably suppressed while the overall high slot space factor is ensured. And a topological structure of one set of windings is set as a concentric winding, so that the sinusoidal property of total armature magnetomotive force is improved, and air gap flux density harmonics are reduced, thereby reducing stator and rotor loss and permanent magnet eddy current loss, and improving the operation efficiency of the motor.
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