摘要
为了实现方波型无刷直流电机的无传感器控制，提出根据激磁电势波形确定电机换向时序的“端电压法”，详细阐述其特殊的起动过程和双向运转技术． 针对“端电压法”控制的方波电机，提出一种新型的用变压器电势抵消激磁电势而实现的等效弱磁控制方法，并作理论分析与实验验证．
In order to implement sensorless control for a square\|wave brushless DC motor,this paper presents a Terminal Voltage Method (TVM),in which the motor commutation is determined based on the waveform of exciting EMF.The special starting procedure and bi\|directional running technique of TVM are included.Moreover,a novel equivalent flux\|weakening control algorithm is proposed for such a sensorless square\|wave brushless DC motor.The algorithm is verified with experimental results.
关键词
无刷直流电机
位置检测
弱磁控制
位置传感器
brushless DC motor
position detection
exciting EMF
flux\|weakening control
