无位置传感器无刷直流电机直接反电势检测方法的研究  

Study on Method of Direct Back EMF Detection for Position Sensorless Brushless DC Motor

作　　者：郑许峰[1] 林明耀[1] 葛善兵[1] 

机构地区：[1]东南大学,江苏南京210096

出　　处：《江苏电器》2005年第6期41-43,共3页

摘　　要：介绍了无位置传感器无刷直流电机(BLDCM)驱动的一种新的反电势检测方法。该方法不需要 引出电机中性点，通过选择 PWM 和导通策略，就能直接从电机端部获得反电势信号。该方法能避免开关高频 调制产生的十扰，不需要滤波。最后，通过 PSPICE 软件进行建模与仿真验证。In this paper, a novel back EMF detection method for position sensorless Brushless DC Motor（BLDCM） without the motor neutral point voltage information is presented. The true phase back EMF signal can be directly obtained from the motor terminal voltage by properly choosing the PWM and switch strategy. As the result, the method proposed is not sensitive to switching noise, no filtering is required. The circuit model is established and simulation results verify the theoretical analysis.

关 键 词：无位置传感器 无刷直流电机 直接反电势检测 脉宽调制 

分 类 号：TM33[电气工程—电机]