強耦合磁共振的分析與以多傳送端實現自由方向角度的無線電力傳輸

Abstract

藉由強耦合磁共振方式的無線傳輸可以有很好的效率及能傳一定的距離，我們會使用多圈的線圈當做共振器。由於我們使用的共振器的品質因素很大，因此效率會很好。然而，由於傳送端與接收端的耦合會隨著方向角度而有所變化，當他們垂直的時候，傳輸的效率會非常的差。因此，我們提出了多個傳送端來解決這個問題。在本篇論文裡，我們會先介紹電路模型和強耦合磁共振的架構及方法，接著使用網路分析儀量測及HFSS模擬來驗證此模型，接者我們會展示和分析我們提出的多傳輸線圈架構，結果證實這種架構能夠實現自由方向角度的無線電力傳輸

The wireless power transfer via strongly coupled magnetic resonances is more efficient method for transmission. We use multi-turn coils as resonators to transfer energy. Because the quality factor of resonators we use is large, the efficiency is good. However, because the coupling between the transmitter and receiver changes at different orientations and the transmission efficiency is bad while the axes of transmitter and receiver are orthogonal, new design is needed. We propose multiple transmitters wireless power transfer to solve this problem. In this thesis we first introduce circuit model and the structure of conventional strongly coupled magnetic resonance method, and make experiment with VNA and full wave simulation via HFSS to verify the model. Then we demonstrate and analyze the multiple transmitter method. The results confirm that multiple transmitter method could realize the orientation-free wireless power transfer.