摘要
在利用无感驱动方式对永磁同步电机(PMSM)进行高精度速度控制的时候,绕组中感应电势(Backemf)的过零点(ZCP)的精度是非常重要的。本文采用了解析法和数值方法分析了引起ZCP误差的电机电磁结构和生产上的因数,并且提出了相应的解决方案。
In many applications of permanent magnet synchronous motor（PMSM）,the zero crossing points（ZCPs） of back-emf generated in the motor armature windings are used as rotor position signal for realizing precision motor speed control with sensorless drive method.The error of ZCP is of big concern for the applications requesting accurate speed control with sensorless PMSM drive mode.In the paper,several electromagnetic causes inducing the ZCP error are analyzed.These causes are induced during the motor design and production.Both the analytical and numerical methods are used in the analysis to study the influence of the electromagnetic structure on the ZCP.Solutions are then proposed to reduce the errors of the ZCP during the motor design phase.
出处
《日用电器》
2017年第10期54-58,64,共6页
ELECTRICAL APPLIANCES
关键词
速度控制
无感驱动
反电势
过零点
永磁同步电机
speed control
sensorless drive
back-emf
zero crossing points
permanent magnet synchronous motor
