Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 68, Issue 12, Pages 12046-12057Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2020.3047008
Keywords
Switches; Inductors; DC-DC power converters; Clamps; Capacitors; Stress; Windings; Active clamp; buck-boost; current-fed (CF); dc-dc converter; isolated; quasi-z-source (qZS); reliability; start-up; voltage overshoot
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Funding
- Korea Institute of Energy Technology Evaluation and Planning of the Republic of Korea [20194030202310]
- Ministry of Trade, Industry & Energy of the Republic of Korea [20194030202310]
- National Research Foundation of Korea - Korean government [NRF2019R1A2C1006367]
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This article introduces a current-fed full-bridge isolated dc-dc converter using quasi-Z-source network, which effectively eliminates voltage overshoot problems and reduces switch current stress compared to conventional converters with active clamp. The operation principles are analyzed in detail and simulation/experimental results with a 1-kW prototype are provided to verify theoretical analysis.
This article presents current-fed (CF) full-bridge (FB) isolated dc-dc converter using quasi-Z-source network. Owing to its inherent buck-boost and clamping function, the proposed converter can effectively eliminate start-up and switch voltage overshoot problems. In addition, when compared with the conventional CF-FB converter with active clamp, switch current stress is much reduced and less active switches are required. Operation principles of the proposed converter are analyzed in detail. The simulation and experimental results with 1-kW prototype are also provided to verify theoretical analysis.
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