Abstract
This article presents a method to solve the three major problems of bridgeless rectifiers, that is, the existence of output filter units, multistage transformation, and dual-frequency power pulsation without electrolytic capacitors (E-caps). In this article, a virtual port is introduced and integrated with the main circuit. Meanwhile, the sharing of devices greatly reduces redundant devices, especially the high-loss magnetic devices. An excellent switching control scheme ensures adaptability under the decoupling capacitor voltage with a large waveform. Thus, the above-mentioned topology and control strategy provide the possibility to replace E-caps with the film capacitors. Finally, all the excellent performances are proved through an experimental prototype with a rated output power of 100 W.
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