A built-in permanent magnet synchronous motor

A permanent magnet synchronous motor technology, applied to synchronous motors with stationary armatures and rotating magnets, synchronous machines, synchronous machine parts, etc., to increase power density and torque density, reduce torque ripple, improve The effect of the magnetic effect
CN105576924BActive Publication Date: 2018-01-02SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2018-01-02

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Abstract

The invention discloses a built-in permanent-magnet synchronous motor, which comprises a stator, an armature winding and a rotor, wherein the armature winding is wound on teeth of the stator in a distributed manner; the rotor is located in a hollow cavity of the stator; V-shaped permanent magnets which are distributed along the circumferential direction of the rotor are arranged on the rotor; two ends of the permanent magnets are toward the stator; and in each permanent magnet, first magnetic barriers are arranged at two ends of the permanent magnet and magnetic barrier groups are arranged at the outer side and the inner side of the permanent magnet respectively. The built-in permanent-magnet synchronous motor solves the problems that a traditional magnetic barrier design reduces torque ripples, does not improve an output torque and only improves the performance; through multi-layer combined magnetic barriers, air-gap magnetic density distribution is improved; the torque ripples are reduced; meanwhile, the torque output capability is also improved; and the torque comprehensive performance of the built-in permanent-magnet synchronous motor is finally improved.
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Description

technical field

[0001] The invention belongs to the field of permanent magnet motors, and in particular relates to a built-in permanent magnet synchronous motor. Background technique

[0002] The built-in permanent magnet synchronous motor has the advantages of high power density, strong torque output capability, wide speed range and high efficiency, and has been widely used in the field of electric vehicle drive, such as commercial hybrid electric vehicles such as Prius. However, the large torque ripple of the built-in permanent magnet synchronous motor is still a problem to be solved. The torque ripple affects the loss, noise and vibration of the motor during operation, thereby affecting the efficiency of electric vehicles and the comfort of riding. Therefore, improving torque ripple and reducing losses are the current research hotspots of interior permanent magnet synchronous motors.

[0003] In order to solve the torque quality problem of the traditional built-in perman...

Claims

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