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In this paper, a novel active clamp Flyback-Forward converter is proposed for large voltage gain and high power applications. The interleaved configuration on the primary side is employed to handle the large input current. An improved voltage doubler configuration is adopted on the secondary side to make the output diodes sustain only half of the high output voltage. Furthermore, the output diode...
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...
A novel converter is proposed in this paper to satisfy the high power, high step-up and isolated conversion requirements. In the proposed converter, the input-parallel configuration is adopted to share the large input current and reduce the conduction losses, while the output-series configuration is adopted to get a high voltage gain. Consequently, a transformer with a low turns ratio can be applied,...
A novel interleaved high step-up converter with voltage multiplier cell is proposed in this paper to avoid the narrow turn-off period and to reduce the large power device current ripple, which is existed in the conventional boost converters in high step-up applications. The voltage multiplier cell is composed of the secondary windings of the coupled inductors, the series capacitor and two diodes....
A high step-up converter with a coupled inductor and a switched capacitor is proposed in this paper. By using the coupled inductor, the voltage gain of the converter is extended and the voltage stress of the main switch is decreased to reduce the conduction losses. Moreover, the reverse-recovery problem of the output diode is alleviated by the leakage inductance. By using the switched capacitor, the...
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