PI Controller Tuning & Stability study of the Flyback Converter with an Energy Regenerative Snubber

Flyback converters are widely used for low power applications due to their simplicity. However, flyback converters require some sort of snubber circuit to clamp the voltage across the switch. An energy regenerative snubber, which has been developed recently, is one of the simplest snubbers. This paper will focus on how to tune a PI controller for an energy regenerative snubber. The stability of the converter will be studied as well. The feasibility of the converter is confirmed by simulation results obtained from PSIM, a commercially available power electronic simulation software package.