摘  要：针对无位置传感器的永磁无刷直流电机的起动控制，分析了二二导通三相逆变器的电压空间矢量PWM控制，提出了具有二二导通的SVPWM控制和电流调节控制的无位置传感器BLDCM的起动控制，其中电流调节控制采用两点式比较器控制。该起动控制方法不但能有效控制起动电流大小，而且改善了BLDCM开环起动性能。通过仿真比较表明，在保持对二二导通BLDCM电流调节控制的基础上，SVPWM起动控制比升频起动控制性能更好。
关键词：无刷直流电机；电压空间矢量；电流；起动；控制

Abstract: The paper analysed voltage space vector PWM control of three phase inverter in 1200 conduction mode,and a novel star-up control of sessorless BLDCM based on SVPWM and current control was proposed to deal with star-up control problem.It can efficiently control current and improve dynamic performance of open loop star-up control.Comapred with star-up control of increasing frequency simulated results show,the star-up control based on SVPWM results has better control performance.
Key Words:Brushless DC motor;Voltage space vector;Current;Start-up;Control