Modularization multiphase permanent magnet synchronous motor based on single and double layer compound windings

Abstract

The invention relates to a modularization multiphase permanent magnet synchronous motor based on single and double layer compound windings, and belongs to the field of permanent magnet motors. The modularization multiphase permanent magnet synchronous motor aims at solving the problems that when faults like a winding short circuit occur in a conventional multiphase permanent magnet synchronous motor, the fault isolation difficulty is large; as the interphase electromagnetic coupling degree is high, the motor modularization design difficulty is large. The modularization multiphase permanent magnet synchronous motor comprises a stator and a permanent magnet rotor, the stator is arranged inside or outside the permanent magnet rotor, and a gap is reserved between the stator and the permanent magnet rotor; the stator is formed by assembling a plurality of same stator modules and is in a round disc shape; each stator module comprises a stator core and 2n concentrated windings; the 2n concentrated windings are arranged in 2n+1 stator grooves, and each armature tooth is wound with one concentrated winding; the number of turns of the concentrated windings winding on two adjacent armature teeth are equal, and the winding directions of the concentrated windings winding on the two adjacent armature teeth are opposite; the permanent magnet rotor is formed by assembling a permanent magnet and a rotor core, and can be of a pasting structure or an Halbach structure or a tangential structure and the like.

Description

technical field [0001] The invention relates to a modular multiphase permanent magnet fault-tolerant motor, which belongs to the field of permanent magnet motors. Background technique [0002] Since the 21st century, with the increasingly serious energy crisis and environmental pollution, energy conservation and environmental protection have gradually become the two major themes of today's automobile development, and new energy vehicles represented by electric vehicles have gained more and more attention. For electric vehicles, the safety and reliability of their electric drive systems are of paramount importance. At present, when the traditional three-phase permanent magnet synchronous motor has a winding open circuit or short circuit fault, the torque output of the motor will change drastically, and even fail to work, which may pose a serious threat to the safety of the vehicle itself and the occupants. threaten. Multi-phase permanent magnet synchronous motor has good fa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of difficulty in fault isolation when a fault such as winding short circuit occurs in a conventional multi-phase permanent magnet synchronous motor, and the difficulty in modular design of the motor due to the high degree of electromagnetic coupling between phases, and provides a single-phase permanent magnet synchronous motor. Modular multi-phase permanent magnet synchronous motor with double-layer hybrid winding

Images