Multi-phase fault-tolerant permanent magnet synchronous motor disk rotor

Abstract

The invention discloses a multi-phase fault-tolerant permanent magnet synchronous motor disk rotor, belonging to the field of permanent magnet motors. The invention solves the problem that the short-circuit current suppression effect of the traditional surface-mount disk permanent magnet motor is bad. The multi-phase fault-tolerant permanent magnet synchronous motor disk rotor comprises a rotor core and p permanent magnets, wherein the rotor core comprises a rotor core yoke and p rotor core poles; the p rotor core poles are arranged on the disk surface of the annular rotor core yoke; the p rotor core poles are uniformly distributed along the peripheral direction; a permanent magnet slot is formed between every two adjacent rotor core poles; a permanent magnet is embedded into each permanent magnet slot; the central angle of the sector of the permanent magnet is smaller than or equal to the central angle of the sector of the permanent magnet slot; the surfaces of the p permanent magnets opposite to a stator have the same polarity, and axial magnetization is adopted; and p is the pole pair number of the rotor.

Description

technical field [0001] The invention relates to a disc rotor of a multi-phase fault-tolerant permanent magnet synchronous motor, belonging to the field of permanent magnet motors. Background technique [0002] With the increasingly serious problems of the environment and energy crisis, the society pays more and more attention to environmental cleanliness and energy security issues, which greatly promotes the development of electric vehicles. For electric vehicles, the reliability and safety of the electric drive system is of paramount importance. However, when the traditional three-phase permanent magnet synchronous motor has an open circuit, a short circuit in the winding, or an open circuit or short circuit fault in the power device of the driver, the torque output of the motor will change drastically, and it may even fail to work. Safety poses a serious threat. Therefore, for the sake of safety and reliability, it is extremely important to use a multi-phase fault-toleran...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the short-circuit current suppression effect of the traditional surface-mounted disc permanent magnet motor is not good, and to provide a multi-phase fault-tolerant permanent magnet synchronous motor disc rotor

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