FPGA based hybrid cascade multilevel converter

In this paper, a hybrid cascade multilevel three-phase converter is constructed based on field programmable gate array (FPGA). FPGA comprises thousands of logic gates and it provides flexibility to modify the designed circuit without altering the hardware. So FPGA is applied to design the PWM pulse generator for multilevel converter with no synchronization and communication trouble. A SHPWM pulse generator by FPGA is designed for 7-level three-phase converter. And experimental results are presented to verify the proposed method.