Variable flux permanent magnet fault-tolerant motor and design method

Abstract

The invention discloses a variable flux permanent magnet fault-tolerant motor and a design method, and relates to the field of permanent magnet fault-tolerant motors. Comprising a stator, a rotor and a rotating shaft, armature teeth are evenly distributed in the circumferential direction of an inner ring of the stator, armature windings are wound on the armature teeth, permanent magnets are evenly distributed in the circumferential direction of the rotor at intervals, the permanent magnets are arranged in a V shape to form permanent magnet pairs, and V-shaped openings face air gaps. And air magnetic barriers are arranged between the d axis and the q axis and are uniformly distributed along the outer circumferential direction of the rotor, so that the basic performance of the motor is improved, the fault-tolerant performance and the reliability of a motor driving system are further improved, and the variable working condition requirements of the vehicle motor are met. By ingeniously designing the rotor magnetic barrier and the air gap magnetic barrier and adopting the fractional slot concentrated winding and the like, the technical problem that a traditional motor is difficult to have the advantages of simple structure, high fault tolerance performance, wide speed regulation range and high efficiency is solved.

Description

technical field [0001] The invention relates to a motor, in particular to a variable magnetic flux permanent magnet fault-tolerant motor system based on variable operating conditions. Background technique [0002] In response to the national carbon dioxide emissions striving to peak in 2030 and striving to achieve the "dual carbon" strategic goal of carbon neutrality in 2060, the research and application of new energy electric vehicles is an effective way to achieve energy conservation and emission reduction and this goal. The research of new energy electric vehicle is a hot issue, and it is particularly important to satisfy its safety and reliability. As the "heart" of electric vehicles, the motor drive system is a common key technology in electric vehicle research. Permanent magnet motors have the advantages of high efficiency, high power density, and wide speed regulation range, and their drive systems have received extensive attention in the field of electric vehicles. ...

AI Technical Summary

Problems solved by technology

However, this type of motor increases additional losses, which is not conducive to improving the efficiency of the motor; at the same time, the design theory of this invention does not consider the special application of electric vehicles with multiple operating conditions, so it is difficult to directly apply to the field of electric vehicles

[0004] It can be seen that the existing traditional permanent magnet motor fails to take into account high efficiency, wide speed regulation performance, fault tolerance performance and position sensorless operation performance in the design stage of the motor. , climbing, high-speed cruising, failure” and other variable working conditions, the motor system is still one of the scientific and technical problems to be solved in the field of electric vehicles

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