High Step-up Boost Converter Integrated With a Transformer-Assisted Auxiliary Circuit Employing Quasi-Resonant Operation

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Stacking an auxiliary step-up circuit on top of a boost converter is one of the most attractive structures for nonisolated high step-up applications. In this paper, in order to avoid the large input current ripple of coupled-inductor-based circuits, an auxiliary step-up circuit is integrated via an additional transformer and its balancing capacitor. Avoltage-doubler is adopted as an auxiliary step-up circuit, which is inherently suitable for high-voltage applications due to its simple structure and low-voltage stress. Moreover, the transformer leakage inductor and the balancing capacitor constitute a resonant tank so that the quasi-resonant operation makes the current sinusoidal. As a result, a reduced switch turn-OFF loss and reverse recovery of the diode can be expected. The proposed converter is verified with a 24 V input, 160 W-200 V output prototype.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2012-04
Language
English
Article Type
Article
Keywords

DC-DC CONVERTERS; HIGH-VOLTAGE GAIN; COUPLED INDUCTORS; HIGH-EFFICIENCY; PWM CONVERTERS; CONTROL SCHEME; ACTIVE CLAMP; CELL; CONVERSION; FAMILY

Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.27, no.4, pp.1974 - 1984

ISSN
0885-8993
DOI
10.1109/TPEL.2011.2170223
URI
http://hdl.handle.net/10203/97932
Appears in Collection
EE-Journal Papers(저널논문)
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