用于磁场定向矢量控制的空间电压矢量PWM

Voltage Space Vector PWM in Field-oriented Control of Induction Motor

电流控制是异步电机磁场定向控制的核心问题之一。本文从力矩电流和励磁电流直流调节分析出发,将电流调节器的输出转化为逆变器的电压参考值,并通过空间电压矢量PWM方法实现电压输出和电流的跟踪控制。该方法在13kW电梯专用变频器上得到实现。理论分析和实验研究表明,SVPWM比SPWM具有更好的电流、电压控制效果。

The current control is one of the kernel problems of induction motor field oriented control （FOC）. From the analysis of DC adjustment of torque current and exciting current,the output value of current regulator was translated into the reference value of inverter voltage, and voltage output and the current tracing control were realized with voltage space vector PWM （SVPWM） method.The method described was implemented in a 13kW special inverter for elevator.Theoretic analysis and experimental re, suits indicate that SVPWM can achieve better voltage and current control performance than SPWM.