Novel five-phase salient-pole synchronous reluctance motor and inhibition method of torque ripple thereof

Abstract

The present invention discloses a novel five-phase salient-pole synchronous reluctance motor and an inhibition method of a torque ripple thereof. The novel five-phase salient-pole synchronous reluctance motor comprises an outer stator and an inner rotor; the outer stator is provided with a distributed winding; the inner rotor comprises a magnetic conductive bridge, a plurality of salient poles anda location hole. The pole-arc coefficients of the adjacent salient poles are different, and the deviation angles of each pair salient poles are different. The inhibition method provided by the invention concretely comprises the steps of: selecting different pole-arc coefficients of adjacent poles, selecting repeat units, performing excursion and calculating the excursion angles. The asymmetric design method and the magnetic pole offset method are employed to facilitate inhibition of the torque ripple and can be utilized to a synchronous reluctance motors, a permanent magnet assisted synchronous reluctance motor and a permanent magnet motor. Formulas are employed to quickly calculate the optimal pole-arc coefficient difference of the adjacent poles and the interval deviation angles of therepeat units so as to achieve the optimal effect while reducing the design period.

Description

technical field [0001] The invention relates to the design of a synchronous reluctance motor and a method for suppressing its torque ripple, and belongs to the technical field of motor manufacturing. Background technique [0002] Synchronous reluctance machine (SynRM) has become the focus of research in the field of electric vehicle drive motors because of its simple structure, high temperature operation capability, high efficiency and high cost performance. However, with the rapid development of technology, more and more application fields put forward high requirements on the working stability of the motor, that is, the output torque of the motor should be as smooth as possible, so as to achieve smooth and accurate thrust transmission. Therefore, it is very necessary to study the suppression method of SynRM torque ripple. [0003] At present, domestic and foreign scholars have done a lot of in-depth research on how to suppress the SynRM torque ripple, such as the use of mu...

AI Technical Summary

Problems solved by technology

In addition, most of the existing torque ripple suppression methods rely on finite element simulation, which is quite time-consuming

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