This thesis establishes the whole simulation model for sensorless BLDCM Drivesbased on Simulink/PowerSystem and researches the algorithm of Bemf zero crossingpoint detection.

• 本文建立了基于Simulink/PowerSystem的无位置传感器无刷直流电机调速系统整体仿真模型,对反电动势过零检测法进行了仿真研究。