Robust digital control of single phase PWM inverter using 3MHz multi sampling method with FPGA based hardware controller

3MHz multi sampling deadbeat control for 100kHz carrier single phase PWM 3.verter using FPGA based hardware controller was proposed. 3MHz sampling for the feedback signals was realized while the carrier interval to recalculate the PWM pulse pattern, the tracking accuracy to the reference was much improved for the disturbance and the parameter variations. Design concept and high calculation capability of FPGA based hardware controller was indicated. The robustness of the proposed method were verified through simulations and experiments. And 3MHz multi sampling method using the FPGA based hardware controller realize the robust system.