一种电机转矩纹波抑制方法

Method for rejecting torque ripple of motor

Abstract

The invention discloses a method for rejecting the torque ripple of a motor. The method comprises the following steps of: acquiring first reference current under a two-phase conducting mode and second reference current under a phase change mode; controlling winding current to track the first reference current to realize the rejection on low-frequency torque ripple by adopting a single- switch chopper mode under the a two-phase conducting mode; controlling non-phase-change winding current to track the second reference current to realize the rejection on the low-frequency torque ripple and phase change torque ripple by adopting a first phase change control strategy under a low-speed mode; controlling the non-phase-change winding current to track the second reference current to realize the rejection on the low-frequency torque ripple and the phase change torque ripple by adopting a second phase change control strategy under a high-speed mode; designing a first current controller by adopting the single-switch chopper mode; designing a second current controller by adopting the first phase change control strategy; designing a third current controller by adopting the second phase change control strategy; and switching to the first current controller, the second current controller or the third current controller according to an operation mode.
本发明公开了一种电机转矩纹波抑制方法,获取两相导通模式下第一参考电流和换相模式下第二参考电流;在两相导通模式下采用单开关斩波模式,控制绕组电流对第一参考电流的跟踪,实现对低频转矩纹波的抑制;在低速模式下,采用第一换相控制策略控制非换相绕组电流对第二参考电流的跟踪,实现对低频转矩纹波和换相转矩纹波的抑制;在高速模式下,采用第二换相控制策略控制非换相绕组电流对第二参考电流的跟踪,实现对低频转矩纹波和换相转矩纹波的抑制;通过单开关斩波模式设计第一电流控制器;第一换相控制策略设计第二电流控制器;第二换相控制策略设计第三电流控制器;根据运行模式切换到第一电流控制器,第二电流控制器或第三电流控制器。

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    CN-104539200-BSeptember 29, 2017广东美的制冷设备有限公司, 美的集团股份有限公司电机的转速控制器、电机的转速控制方法
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