不同PWM控制策略无刷直流电机转子位置统一检测方法

无位置传感器无刷直流电机不同的PWM调制策略,需要采用不同的方法检测转子位置,这给实际生产带来了很大不便.针对这一问题,本文提出一种通过检测无刷直流电机线电压差的过零点来检测转子位置信号的统一方法.理论分析和实验结果证明,该方法不受PWM调制技术的影响,在很宽的速度范围内都能准确地检测到转子位置信号.

A Unified Detection Method of Rotor Position for Sensorless Brushless DC Motor of Different PWM Control Strategies

The different PWM modulation strategies for sensorless brushless DC motor need to adopt different methods of rotor position detection,which have led to great inconvenience for the actual production.In response to this problem,a unified method to detect the rotor position for brushless DC motor by detecting of the line voltage difference zero-crossing is presented in the paper.Theoretical analysis and experimental results show that the proposed method is not affected by PWM modulation techniques,and able to ...