Optimal design of a hybrid winding structure for planar contactless battery charging platform
Optimal design of a hybrid winding structure for planar contactless battery charging platform
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DOI：
10.1109/tpel.2007.911844
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发表时间：
2008-01-01
影响因子：
6.7
通讯作者：
Hui, S. Y. Ron
中科院分区：
文献类型：
--
作者：
Liu, Xun;Hui, S. Y. Ron
平面非接触式电池充电平台是一项新兴技术，有可能统一便携式消费电子产品的充电协议。本文提出了一种由线圈和螺旋绕组组成的新型混合结构，以改善充电表面的均匀磁场分布。针对给定的集中式线圈，对螺旋绕组的匝数和尺寸的优化设计进行了分析。通过电磁兼容性扫描仪和能量接收线圈对所设计的原型的均匀磁场分布进行了测量。基于电路建模和分析，设计了逆变电路拓扑结构，特别是谐振补偿电路，以便在多负载应用中实现最大功率传输。提出了一种设计流程，并通过实验进行了验证。当四个负载同时在平台上充电时，耦合结构的效率已达到约80%。
Planar contactless battery charging platform is an emerging technology that has the potential of unifying the charging protocols of portable consumer electronic products. In this paper, a new hybrid structure which consists of a coil and a spiral winding is proposed for improving the uniform magnetic field distribution over the charging surface. An analysis into an optimal design of the number of turns and the dimension of the spiral winding is presented for a given concentrated coil. The uniform magnetic field distribution of the designed prototype is measured by an electromagnetic compatibility scanner and by an energy-receiving coil. Based on circuit modeling and analysis, the inverter circuit topology and particularly the resonant compensation tank is designed for maximizing power transfer for multiload applications. A design procedure is proposed and verified by the experiments. An efficiency of about 80% has been achieved for the coupled structures when four loads are charged on the platform simultaneously.