Realization of the three-phase SPWM wave in the TMS320F28335

SPWM technique is a suitable power switch conversion device for high-power high-performance switching modulation strategy,there are good prospects for the application of active power filter.This article describes how to take advantage of high-performance digital signal processor TMS320F28335 chip Peripheral Event Manager(EV) module to generate three-phase SPWM wave,process flow diagram and the key to the program source code.The method uses asymmetric regular sampling algorithm parameters calculated mainly using the look-up table method,a small amount of calculation,real-time high.In engineering practice,this method can meet the accuracy requirements of control,but also to meet the real-time requirements,and can control the output of the inverter power.