Single-Switch Single Power-Conversion PFC Converter Using Regenerative Snubber

This paper presents a single-switch single power-conversion (S 3 PC) power factor correction (PFC) converter. Using the series-resonant circuit, the S 3 PC converter provides bidirectional core excitation for the transformer and obtains higher power capability compared with the conventional single-s...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2018-07, Vol.65 (7), p.5436-5444
Main Authors: Kim, Kwang-Seop, Kwon, Jung-Min, Kwon, Bong-Hwan
Format: Article
Language:English
Subjects:
Algorithms
Bidirectional core excitation
Capacitors
Circuits
Control algorithms
Control theory
Controllability
Converters
Diodes
Energy conversion efficiency
Feedback linearization
Inductors
Power control
Power factor
Reactive power
RLC circuits
series resonance
Snubbers
Stability
Switches
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Summary:This paper presents a single-switch single power-conversion (S 3 PC) power factor correction (PFC) converter. Using the series-resonant circuit, the S 3 PC converter provides bidirectional core excitation for the transformer and obtains higher power capability compared with the conventional single-switch PFC converters. Also, the series-resonant circuit provides zero-current switching turn-off for the output diodes, so that the reverse-recovery loss is alleviated. The regenerative snubber not only avoids the voltage spike of the switch but also recycles the absorbed energy. Because these features are obtained with only a single switch and through single power-conversion, the S 3 PC converter has high efficiency and simple structure. The control algorithm derived from feedback linearization enables the S 3 PC converter to obtain good controllability. Also, by using this control algorithm, the proposed converter performs both PFC control and output power control through single power-conversion. With these advantages, the S 3 PC converter provides maximum efficiency of 96.4% and high power factor in excess of 0.994. The proposed converter is theoretically analyzed in detail, and experimental results are applied to a 1-kW prototype to show its validity.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2774765