In this paper, the hardware and software designs have been proposed based on single chip microcomputer of PIC16F87X to control SA8282, drive IGBT, and in order to generate the AC pure sinusoid on the basic of static-inverter. With the digital PID modulation the precision and stabilization of the output voltage of the power supply have been enhanced. Experimental results show the output voltage waveform is good, and the performance meets the requirement.