Research on Quadruple D Square Coil with High Misalignment Tolerance for Wireless Power Transfer
Kong Lingchao1, Li Houji1, Pan Bo2, Wang Yong1
1. School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240; 2. Shanghai Academy of Spaceflight Technology Shanghai 201109 China
Abstract：In the wireless power transfer system, the misalignment of transmitting and receiving coils is inevitable, which reduces the coupling coefficient and efficiency of the coils. However, the existing coils, such as double D (DD), have good misalignment tolerance in only one direction. In order to solve this problem, a quadruple D square coil with high misalignment tolerance in multi directions is proposed. Firstly, the magnetic coupling structure of the coil is studied, and the theoretical expression of the mutual inductance of the QDS coil is derived. Then the JMAG software was used to simulate square coils, DD coils, QD coils and QDS coils. By analyzing the magnetic flux density distribution characteristics and misalignment characteristics of the coils, it is proved that QDS coils have strong anti-offset ability. Finally, a platform was built to measure the mutual inductance when the coil was offset, and the advantages of the QDS coil were verified by comparison and analysis with the square coil, DD coil and QD coil.
孔令超, 李厚基, 潘搏, 王勇. 无线电能传输中的QDS线圈偏移特性研究[J]. 电工技术学报, 2022, 37(13): 3361-3371.
Kong Lingchao, Li Houji, Pan Bo, Wang Yong. Research on Quadruple D Square Coil with High Misalignment Tolerance for Wireless Power Transfer. Transactions of China Electrotechnical Society, 2022, 37(13): 3361-3371.
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2022, Vol. 37 
