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| Optimization of Design Method of T-Type Impedance Matching Network for Wireless Charging System Based on Rectified Load Compensation |
| Li Shufan1, 2, Wang Lifang1, 3, Guo Yanjie1, 3, Ji Li1, 2, Yue Yuan4 |
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 100190 China;
3. Beijing Co-Innovation Center for Electric Vehicles Beijing 100081 China;
4. School of Electrical Engineering & Automation Tianjin University Tianjin 300072 China |
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Abstract The impedance matching of the wireless charging system is of great importance for improving the power transmission capability of the system. To avoid the shortcomings of the existing resistive rectified load analyzing method, an optimization method of T-type impedance matching network for wireless charging system was proposed based on rectified load compensation. Firstly, the T-type impedance matching networks were analyzed based on traditional rectified load analyzing method. Secondly, the non-linear characteristics of the rectified load were analyzed, and a conclusion was obtained accordingly that the inductive characteristics of the rectified load could not be neglected. According to the conclusion above, the method of compensating the rectified load was studied, and the T-type impedance matching network was optimized. Finally, simulations and experiments were conducted to verify the proposed optimization method. The results show that the proposed optimization method can improve the power transfer efficiency of the wireless charging system by nearly 1% and the output power from 2.52kW to 2.77kW.
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Published: 16 January 2018
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| Fund:国家高技术研究发展计划（863计划）（2015AA016202）和国家自然科学基金（51507168）资助项目 |
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Corresponding Authors:
王丽芳 女,1971年生,研究员,博士生导师,研究方向为电动汽车无线充电技术、动力电池管理、整车控制技术、智能车与电磁兼容技术等。E-mail: wlf@mail.iee.ac.cn
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2017, Vol. 32 
