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In this paper, a non-isolated high step-up interleaved DC/DC converter is proposed for the photovoltaic and fuel cell grid-connected power applications. By employing the built-in transformer, the voltage gain is extended greatly without the extreme duty cycle and the voltage stress of the switches is reduced. The output diode reverse-recovery problem is alleviated by the leakage inductance of the...
An isolated interleaved zero voltage switching (ZVS) Flyback-Forward boost type converter with active clamp scheme is designed in this paper. Both the main and the clamp switches canswitching losses operate with ZVS soft switching performance to reduce the switching losses. Furthermore, the leakage energy is recycled and the turn-off voltage spikes on the main switches are absorbed by the active clamp...
In this paper, a third winding and an additional switched capacitor are inserted into each phase of the conventional interleaved Flyback converter to derive a novel triple boost converter for high step-up conversion. Furthermore, the active clamp circuit, which is composed of a power MOSFET and a small capacitor, is inserted to the primary side of each phase to recycle the leakage energy and to suppress...
An interleaved boost converter with coupled inductors and switched capacitors is proposed in this paper. The switched capacitors are used to realize the inherent voltage-double function which increases the voltage gain and reduces the voltage stress of the switch greatly so that the low conduction resistance and low voltage rated switches can be applied. Moreover, according to capacitor charge balance,...
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