五相空间矢量PWM技术

Investigation into the Five-phase Space Vector PWM

为了突破功率元器件对三相异步电机变频调速系统容量的限制 ,通过对三相异步电机相数的扩展得到了多相异步电机 .在三相空间矢量脉冲宽度调制 (PWM )的基础上 ,提出一种适用于五相异步电机变频调速系统的五相空间矢量PWM控制技术和调制方法 .通过Matlab/Simulink进行计算机仿真 ,得到较高的电压调制比和良好的电流波形 .五相空间矢量PWM技术可以应用到五相异步电机变频调速系统中 ,并能够提供较好的控制性能 .

In order to overcome the limitation of power semiconductors against the capacity of the frequency control system of three-phase induction machine, a multi-phase induction machine was presented by the phase extension of three-phase induction machine. On the basis of three-phase space vector PWM(SVPWM), a novel theory and an implementation method of five-phase SVPWM suitable for the frequency control system of five-phase induction machine were then proposed. High modulation ratio of voltage and sine wave of current were finally obtained by the simulation via Matlab/Simulink. Five-phase SVPWM can be applied to the frequency control system of five-phase induction machine and is of excellent control ability.