Patent ID: 8023295

Claim:
A power converter system comprising: an input terminal operable to connect to a DC power source; an output terminal at which an output voltage can be provided; an active clamped forward converter operable to provide forward power flow from the DC power source to the output terminal, wherein the active clamped forward converter comprises: a transformer having a primary winding coupled to the input terminal and a secondary winding coupled to the output terminal; a main switch coupled to the primary winding of the transformer, the main switch operable to be turned on and off for charging and discharging a capacitor at the output terminal; and an active clamp switch operable to be turned on for clamping the primary winding of the transformer and to reduce magnetizing current of the transformer so as to reset a magnetic core of the transformer; and a flyback converter operable to provide backward power flow from the output terminal to the DC power source, wherein the flyback converter comprises a switch operable to be turned on for allowing energy stored in the capacitor at the output terminal to be fed back to the DC source; wherein the active clamped forward converter and the flyback converter cooperate to generate a rectified sinusoidal waveform at the output terminal.