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研究生： 吳鴻毅
Wu, Hong-Yi
論文名稱： 跨金屬屏障之無線電能傳輸系統研究
Study on Wireless Power Transfer System Across the Metal Barrier
指導教授： 李嘉猷
Lee, Jia-You
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2021
畢業學年度： 109
語文別： 中文
論文頁數： 139
中文關鍵詞： 無線電能傳輸系統 、金屬屏障 、渦電流 、Qi標準
外文關鍵詞： Wireless power transfer system, Metal barrier, Eddy current, Qi standard
相關次數： 點閱：102  下載：0 
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    • 本論文旨在研究跨金屬屏障之無線電能傳輸能力，使具金屬機殼之電子設備能達成無線充電功能，在金屬平板上進行加工處理，製造出物理切口，使發射線圈之感應磁通量得以順利通過金屬屏障達成無線充電。首先，簡述各種無線電能傳輸之方式，並且進行雙線圈架構中四種基本諧振電路之分析，接著，透過數學建模方式了解環形線圈之磁場空間分布，並且詳細分析金屬平板於交變磁場中之感應渦電流分布以及其集膚效應，隨後透過電磁場模擬軟體以及數值計算軟體協助分析，探討各切口類型金屬平板之傳輸能力。同時，參考Qi標準中之線圈規格，並考量高頻下非理想效應來決定耦合線圈的尺寸以及所使用之線材規格，最後，實際製作五種類型之金屬平板，將各金屬平板放置於雙線圈之間進行測量並比較傳輸能力表現，驗證其皆可進行無線傳能，其中以交叉網狀型系統效率最佳。

    This thesis is aimed to study the wireless power transmission capability across the metal barrier, so that electronic devices with metal cover can achieve wireless charging. The induced magnetic flux of Tx coil is able to cross the metal barrier by making some slots on metal plate. First of all, four basic resonant circuits with two-coil structure are analyzed. Secondly, the spatial distribution of the magnetic field induced by a loop coil is figured out through mathematical modeling. In addition, the eddy currents distribution and skin effect of a metal plate, which is placed in alternating magnetic fields, are derived thoroughly. Moreover, the transmission capability is explored when using various types of metal plates with the helping of electromagnetic field simulation software and numerical calculation software. Afterwards, not only the non-ideal effects but the Qi standard is considered to determine the size of winding coils. Lastly, five types of metal plates are manufactured and placed between the two-coil to measure and compare the transmission performance. In conclusion, all of them can achieve the goal of wireless power transmission, and the performance of overlapping type is the best among all types.

    中文摘要 I 英文摘要 II 英文延伸摘要 III 誌謝 VIII 目錄 IX 表目錄 XII 圖目錄 XIII 第一章 緒論 1 1-1 研究動機與目的 1 1-2 研究背景 3 1-3 研究方法 10 1-4 論文大綱 12 第二章 無線電能傳輸架構原理與特性分析 13 2-1 前言 13 2-2 感應耦合傳輸基本原理 13 2-3 感應線圈之非理想效應 17 2-3-1 集膚效應 18 2-3-2 鄰近效應 20 2-4 無線電能傳輸系統等效模型 22 2-4-1 感應耦合傳輸等效電路分析 22 2-4-2 電容耦合傳輸等效電路分析 27 2-5 雙線圈式感應耦合架構分析 30 2-6 系統整體架構 32 第三章 感應耦合架構與金屬平板渦流分析 33 3-1 前言 33 3-2 諧振電路分析 33 3-3 Tx環形線圈磁場分布之數學建模與分析 37 3-4 金屬板電磁屏蔽效應分析 42 3-4-1 金屬平板之渦電流分析 42 3-4-2 金屬平板之集膚效應 48 3-4-3 金屬平板之渦電流損耗 52 3-5 金屬板切槽之磁場與渦電流模擬及分析 55 3-5-1 無屏蔽之雙線圈耦合架構模擬 55 3-5-2 全屏蔽金屬平板之雙線圈耦合架構模擬 58 3-5-3 散亂開孔型金屬平板之雙線圈耦合架構模擬 61 3-5-4 環排切口型金屬平板之雙線圈耦合架構模擬 64 3-5-5 直排切槽型金屬平板之雙線圈耦合架構模擬 70 3-5-6 邊緣切槽型金屬平板之雙線圈耦合架構模擬 76 3-5-7 交叉網狀型金屬平板之雙線圈耦合架構模擬 82 3-6 模擬分析結果與討論 89 第四章 無線電能傳輸系統硬體電路架構 91 4-1 前言 91 4-2 系統整體電路架構 91 4-3 Tx側電路架構 92 4-3-1 全橋式驅動電路分析 93 4-3-2 全橋驅動電路之開關訊號控制 94 4-4 耦合結構設計 97 4-4-1 繞製線材選擇 97 4-4-2 耦合線圈參數規格 99 4-4-3 金屬平板規格 101 4-5 Rx側電路架構 104 4-5-1 Rx端諧振電路 104 4-5-2 整流濾波電路 105 4-5-3 電壓調節電路 106 4-6 跨金屬屏障之無線電能傳輸系統設計流程 107 第五章 系統模擬與實驗結果 110 5-1 前言 110 5-2 Simplis電路模擬 110 5-3 系統規格與硬體電路參數 114 5-4 系統實驗結果與波形量測 116 5-5 實驗測量結果討論 123 第六章 結論與未來研究方向 127 6-1 結論 127 6-2 未來研究方向 128 參考文獻 129

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