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In this paper, a novel galvanic isolated high step-up converter is presented, which is suitable for renewable energy applications and integrates a boost converter, a coupled inductor, a charge pump capacitor cell, and an LC snubber. Since the proposed converter possesses an input inductor, the input current is continuous. Furthermore, the proposed converter can achieve high voltage gain without extremely...
A novel clamp circuit applied to the flyback converter is proposed to improve the efficiency of the active clamp flyback converter during light load. The proposed clamp circuit combines the active clamp circuit and the transient voltage suppression (TVS) circuit which belongs to the passive clamp circuit. Therefore, during light load, the MOSFET switch of the active clamp circuit is always turned...
In this study, a high voltage-boosting converter is presented, which combines a coupled inductor, a charge pump capacitor, and active clamp circuit, so as to boost up the output voltage as well as to make the main switch turned on with zero voltage switching. In this converter, the coupled inductor behaves as not only an inductor but also a transformer. And, the active clamp switch in the active clamp...
In this paper a novel simple high step-up converter using a coupled inductor and a charge pump capacitor is presented. Compared with the traditional boost converter and other converters with simple structures, the proposed converter can achieve higher voltage gain. The leakage inductance energy of the coupled inductor can be recycled without any clamp circuit. Moreover, the active switch is not floating;...
In this paper, a novel high step-up converter is presented, which combines one charge pump and one coupled inductor with the turns ratio. The corresponding voltage gain is greater than that of the existing step-up converter combing KY and buck-boost converters. Since the proposed converter possesses an output inductor, the output inductor current is non-pulsating. After some mathematical deductions,...
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