A Load and Input Voltage Adaptive Zero-Voltage-Switching Full-Bridge Converter
Yang Xiaoguang1,2, Wang Dexin1,2, Jia Zhe1,2, Gao Zheng3
1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300130 China; 2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology Tianjin 300130 China; 3. Shanghai Institute of Space Power-Sources Shanghai 200245 China
Abstract：This paper presents a zero-voltage-switching (ZVS) full-bridge DC-DC converter operating in a wide input voltage and load range. The proposed converter is derived from the addition of a simple LC auxiliary circuit to the traditional phase-shifted full-bridge (PSFB) converter. The auxiliary current is controlled through a narrow frequency change, and the circulating current loss can be minimized under the ZVS operating conditions. The use of a narrow frequency change can effectively adjust the auxiliary current without significantly affecting the design and control of the main circuit. The steady-state performance of the converter is analyzed in detail; the mathematical model of the converter is established, which can be directly used for the optimized design and precise control of the converter. The experimental results are in good agreement with the analysis results.
杨晓光, 王德鑫, 贾哲, 高正. 负载和输入电压自适应零电压软开关全桥变换器[J]. 电工技术学报, 2022, 37(12): 3061-3072.
Yang Xiaoguang, Wang Dexin, Jia Zhe, Gao Zheng. A Load and Input Voltage Adaptive Zero-Voltage-Switching Full-Bridge Converter. Transactions of China Electrotechnical Society, 2022, 37(12): 3061-3072.
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