基于线电压的无刷直流电动机无位置传感器换相方法  

The Sensorless Commutation Method of for Brushless DC Motor Based on Line Voltage

作　　者：薛晓明[1] 钱驰波[1] 

机构地区：[1]常州信息学院,江苏常州213164

出　　处：《微特电机》2008年第7期20-22,55,共4页Small & Special Electrical Machines

摘　　要：提出了一种无需构建电机中性点,无需移相,只要对瞬时检测的三相端电压进行简单滤波比较后,就能直接得到与霍尔传感器输出一样的换相信号的新方法,详细分析了该方法的工作原理。理论分析和实验结果表明,该方法与常规的检测方法相比在较宽的转速范围内具有良好的性能。A new sensorless detection rotor position method for brushless DC motor without the motor neutral point and shift phase was presented. The commutation signals same as Hall sensor can be directly obtained from instantaneous three terminal voltages with simple filtering and comparison, its principle was detail analyzed. Theoretical analysis and experimental results showed superior over a wide operation when compared with the conventional solutions.

关 键 词：无刷直流电动机 滤波的线电压 换相检测 相移电路 

分 类 号：TM33[电气工程—电机]