Single-Phase Boost Rectifier with Snubber Energy Recovery Feature

Single-phase boost rectifier with snubber energy recovery feature operating under the current-mode control with a turn-on at constant clock time is studied. In this rectifier, the resonant circuit consisting of small inductor and capacitor is added in DC circuit. The snubber energy is transferred to an additional resonant capacitor and can next be transferred to the load circuit when an insulated-gate bipolar transistor as the active power device is turned off. The experimental prototype is implemented to investigate the operation. The experimental results confirm that the proposed snubber energy recovery scheme has the feasibility.