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| The Phase-Shifted Control Method of Isolated Bidirectional DC-DC Converter with Minimum Backflow Power |
| Yu De, Fu Chao, Wang Yi, Wang Yanxu, Yang Zheming |
| State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Baoding 071003 China |
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Abstract Reducing backflow power of isolated bidirectional dc-dc converter (IBDC) can improve the transmission efficiency. It is important to extend the application of IBDC in dc power distribution network. Firstly, the principles of dual-phase-shift control and backflow power production are analyzed. Then the mathematical models of the transmission power, power supply side backflow and load side backflow are established. Accordingly, a minimum backflow power phase shift control method is proposed to decrease current stress and improve efficiency. Under the same power transfer capability, the proposed method can control operating points to realize the minimum backflow power compared with the dual-phase-shift control. Finally, by using a 2kW IBDC porotype, the experimental results show that the proposed control method can achieve the minimum backflow power operation in different conditions, which can effectively reduce the current stress and power loss and improve efficiency.
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Published: 16 January 2018
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| Fund:国家重点研发计划资助项目（2016YFB0900203） |
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Corresponding Authors:
付 超 男,1979年生,博士,讲师,研究方向为电力电子技术在电力系统中应用。E-mail: fuchao@ncepu.edu.cn
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2017, Vol. 32 
