Modularization disc multi-phase permanent magnet synchronous motor based on single-layer and double-layer mixed windings

Abstract

The invention relates to a modularization disc multi-phase permanent magnet synchronous motor based on single-layer and double-layer mixed windings and belongs to the field of permanent magnet motors. The modularization disc multi-phase permanent magnet synchronous motor aims at solving the problems that when faults such as winding short circuits occur in a conventional disc multi-phase permanent magnet synchronous motor, the fault isolation difficulty is high, and the motor modularization design difficulty is high due to the high interphase electromagnetic coupling degree. The modularization disc multi-phase permanent magnet synchronous motor comprises a main shaft, a bearing, a motor shell, one or two stators and a disc permanent rotor, wherein the stators and the disc permanent rotor are arranged in the motor shell, each stator is formed by splicing 2n+1 stator modules, each stator module comprises 2n concentrated windings and a stator iron core, each stator iron core is provided with 2n+1 stator grooves, and one concentrated winding is wound on each armature tooth. Every two adjacent concentrated windings are identical in number of turns and opposite in winding direction. The disc permanent rotor comprises a disc rotor iron core and a plurality of permanent magnets, wherein the permanent magnets carry out magnetizing in the axial direction, and the magnetizing directions of the permanent magnets are opposite.

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. The multi-phase permanent magnet synchronous motor has goo...

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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 disc-type 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 Modular disc multi-phase permanent magnet synchronous motor based on single-layer and double-layer hybrid winding

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