本論文旨在針對電動車無線充電平台提出具較高錯位容忍度與高效率之多單元矩陣型耦合結構。文中首先對於常見之耦合結構進行討論與模擬分析，其特點係以多單元方式進行矩陣型排列之耦合結構，相較於傳統線圈提升整個平面磁場發射之均勻度，同時利用四線圈式磁共振架構，利用具高品質因數之共振線圈進行電能傳輸，提升以往充電平台式感應耦合結構於無線電能傳輸系統間距較短之缺點。應用有限元素分析方法之電磁場模擬軟體模擬耦合結構，並針對不同線圈配置進行討論與分析，最後依據分析結果設計多單元矩陣式結構之共振線圈。系統利用微控制器控制全橋變流器操作頻率，適時追蹤因參數變動導致諧振頻率偏移之現象，以達頻率追蹤之效。最後，實驗結果顯示間距於18公分時可得最大效率為45%，而最大功率達209.9W。

This thesis aims to study wireless power transfer system with four-coil multi-element matrix structure in order to enhance the efficiency on a certain size area. First, difference kinds of common coupling structure are discussed and simulated. Multi-element matrix structure are applied in four-coil wireless power transfer technology and transfer power more effectively by high quality factor. Furthermore, four-coil resonance coupled structure can improve the drawback of the general inductive coupled charging platform in the short distance of the wireless power transmission system. 3-D finite-element simulation software is used to analysis different sets of structure. Then according to the result of simulation to design multi-element matrix resonator structure. The system achieves resonant frequency tracking mechanism by compare the value of voltage on capacitance in the feeding coil. Finally, experimental results show that the highest system efficiency is about to 45% at power transfer distance is 18 cm and the maximum output power is 209.9W.

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