本論文旨在開發設計一套具錯位容忍之同軸無線電能傳輸系統，適用於軌道運輸載具供電，此研究主要基於大眾運輸系統中，地鐵與捷運之軌道載具之運行皆採用第三接觸軌之集電靴電能傳輸裝置，其中供電穩定度及維護安全向為重要考量。因此，本文提出一套二對一同軸線圈感應架構，輔以兩組高頻換流器同時調整功率輸出，可穩定接收端線圈偏移時產生之耦合變化，兼以具有無線電能傳輸時之錯位容忍能力。本論文首先探討不同補償電路之諧振特性，據以決定符合系統需求之電路架構，同時分析感應線圈間之磁場分布，設計規劃一套具備偏移方位偵測與傳輸功率調變功能之控制策略，有效調整各組傳輸模組功率，並可改善接收端偏移時之傳輸效能。而為驗證本方法之可行性，本論文已建置一套同軸無線電能傳輸硬體平台進行電能傳輸實測，測試結果顯示本系統於負載變動情況下，均能維持穩定電能輸出，而且具有理想傳輸效率，可作為無線充電與軌道載具研發參考。

This thesis aims to develop a coaxial wireless power transfer system with misalignment tolerance capability for rail-guided vehicle charging applications. This study is motivated because the third rail of mass rapid transit (MRT) and subway is often connected to surface-current collector for the receiving of power source, where the power supply stability and safety becomes the major concern. Therefore, this thesis proposes a two-to-one coaxial coil induction architecture aided by two high-frequency inverters in order to ensure that the coupling variation is evenly maintained so as to embed the capability of misalignment tolerance. This thesis starts with the investigation of resonant characteristics under different compensation topologies, by which the suitable circuit configuration is determined. This is followed by the analysis of magnetic field distribution between induction coils, and a control strategy for the power adjustement based on the misalignment detection is meanwhile proposed. This control strategy excels at the power adjustment of each transmission module such that the power transmission efficiency can be improved. To confirm the effectiveness of this proposed method, the thesis completes a hardware platform with different function test. Experimental results indicate that the system maintains a stable power output under load variations with stasfactory transmission efficiency. The achievements gained from this thesis are anticipated useful for research and development of wireless charging and rail transportation studies.

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