Control Strategy of Dual Bridge Series Resonant DC-DC Converter System Based on Input Series Output Parallel Connection
Yang Bo1,2, Ge Qiongxuan1, Zhao Lu1, Zhou Zhida1,2
1. Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 2. University of Chinese Academy of Sciences Beijing 100049 China
Abstract：The control strategy of dual bridge series resonant DC/DC converter (DBSRC) system based on the input series output parallel (ISOP) connection is studied in this paper. The small-signal models and the corresponding transfer function of DBSRC and its ISOP system are constructed through the periodic averaging method, where the input voltage of one DBSRC sub-module is influenced by all phase-shift angles of other sub-modules. In order to achieve the input voltage balance of different sub-modules, a differential input voltage sharing (DIVS) control strategy is proposed. This strategy realizes the decoupling control of the output voltage regulation loop and the input voltage sharing regulation loop in the system block diagram. Compared with the traditional input voltage sharing control strategy, this strategy requires less communication data and has higher dynamic response performance. Finally, the simulation and experiments on a 12kW prototype show the correctness of DBSRC small-signal model as well as the effectiveness and superiority of DIVS control strategy.
杨博, 葛琼璇, 赵鲁, 周志达. 基于输入串联输出并联的双向全桥串联谐振DC-DC变换器系统控制策略研究[J]. 电工技术学报, 2020, 35(12): 2574-2584.
Yang Bo, Ge Qiongxuan, Zhao Lu, Zhou Zhida. Control Strategy of Dual Bridge Series Resonant DC-DC Converter System Based on Input Series Output Parallel Connection. Transactions of China Electrotechnical Society, 2020, 35(12): 2574-2584.
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2020, Vol. 35 
