FPGA based emulator for half-bridge inverters operated in stand-alone mode

This paper presents a real-time emulator for single-phase half-bridge inverter operated in stand-alone mode. The discrete-time model used to emulate the inverter is derived by discretizing the three characteristic differential equation of the inverter. The emulator is implemented on high-speed FPGA (Field Programmable Gate Array), which enable FPGA based digital controller be evaluated by a real-time simulator system in the early development process. Experiment results show that the proposed emulator yields voltage, and current responses, which match with that of the realistic inverter circuit almost exactly under the same digital controller.