自起动永磁同步电动机起动转矩的分析

ANALYSIS OF STARTING TORQUE OF THE PM SELF-STARTING SYNCHRONOUS MOTOR

本文剖析了自定向自起动和不定向自起动爪极式永磁同步电动机极爪应具有的特点和要求,指出起动时转矩及起动时振动与起动角和电流初相的关系。提出了用虚角位移法求取起动转矩的计算方法。

In this paper,the characteristics and requirements that the claw-pole musthave and should fulfil are presented for a self-oriented or direction-frec PMself-starting claw-pole type synchronous motors.The analysis of the relationshipof starting torque,vibration in starting time,starting angle,as well as initialphase angle of current is given,and an approach for the calculation of startingtorque of the motors using nominal displacement method is presented.