期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 68, 期 11, 页码 10913-10927出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2020.3032928
关键词
Switches; Pulse width modulation; Resonant converters; Capacitors; Low voltage; Zero voltage switching; Inductors; Bidirectional switch; input voltage variation; low current ripple; pulsewidth modulation (PWM); zero-voltage switching (ZVS)
资金
- National Research Foundation of Korea (NRF) - Ministry of Education [2018R1D1A1B07044999]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2020R1F1A1064716]
- National Research Foundation of Korea [2018R1D1A1B07044999, 2020R1F1A1064716] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The proposed bidirectional resonant converter features a unique structure that minimizes switching loss over a wide voltage range and has been verified through experimentation. Different structures and operating modes are used on the high-voltage and low-voltage sides to achieve a high conversion ratio with low current ripple.
In this article, we propose a current-fed bidirectional resonant converter that has minimal switching loss over a wide voltage gain range. The proposed bidirectional resonant converter employs a double current-fed structure at the low-voltage side and an active voltage doubler with a bidirectional switch at the high-voltage side.The converter operates as a pulsewidth-modulation (PWM) double current-fed resonant converter in the forward mode and a PWM half-bridge resonant converter in the backward mode. By incorporating a bidirectional switch across center nodes of the active voltage doubler, the converter achieves almost zero-voltage switching at the turn-off instant, thereby, incurring little switching loss at all active switches. The proposed topology exhibits a high conversion ratio with low transformer turns-ratio and a low current ripple at the low-voltage side. The operating principles and theoretical derivations of the converter are discussed in detail. The performance of the proposed bidirectional converter are verified using a prototype that has 48-72-V low voltage, 380-V high voltage, and 1-kW output power.
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