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研究生:劉禹秀
研究生(外文):Yu-Hsiu Liu
論文名稱:無線充電之感應線圈耦合與電路分析
論文名稱(外文):Inductive Coils Coupling and Circuit Analysis of Wireless Recharging
指導教授:邱奕鵬
指導教授(外文):Yih-Peng Chiou
口試委員:王子建盧信嘉賴志賢
口試日期:2011-07-28
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:光電工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:145
中文關鍵詞:無線電力傳輸電磁感應諧振電路耦合係數無線充電聯盟Maxwell 3D
外文關鍵詞:wireless power transferelectromagnetic inductionresonant circuitcoupling coefficientWireless Power ConsortiumMaxwell 3D
相關次數:
  • 被引用被引用:2
  • 點閱點閱:1497
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
近年來可攜式電子產品之普及化,使相應充電裝置之安全性與便利性逐漸成為消費者購買的考量因素之一。傳統的有線充電裝置除纜線影響美觀、使用上便利性較低外,尚有電線走火、觸電等安全問題。有鑑於此,無線充電裝置之發展帶來了嶄新的開端,減少了纜線之束縛,將可攜式電子產品放置於充電平台上即可安全且方便地充電是其主要特色,然而由於少了纜線作為輸電媒介,電力傳輸效率是一大關鍵問題。因此,本論文係對無線充電裝置之感應電路進行分析研究,以無線充電聯盟規範之電路為基準,分析各級電路之有效功率傳送效率,並使用電磁模擬軟體Maxwell 3D對電力傳輸之關鍵──感應線圈模擬其耦合係數。電路部分以傳送及接收電路為主,在頻域上分析諧振電路在前後級阻抗間之電力傳送效率。模擬部分主要在於研究兩種結構──立體纏繞式和平面纏繞式線圈對耦合效能之影響,並加入磁性屏蔽層模擬耦合係數之改善效率。最後實際繞製兩種結構感應線圈驗證模擬所得到之結果並計算簡化電路之傳輸效率。

Safety and convenience become one of the considering factors of consumption with the prevalence of portable electrical products nowadays. Besides disorderliness and inconvenience, traditional recharging devices with cables still have many problems such as electrocution, fire caused by electricity, etc. In order to solve these problems, development of wireless recharging technology brings in a brand new design concept. We can recharge portable electrical devices safely and conveniently by just putting them on the recharging platform. However, the main difficulty is the low efficiency of electric power transfer without cables as transferring media. Therefore, in the thesis, we analyze the inductive circuits of wireless recharging device proposed by Wireless Power Consortium, and derive the efficiency of effective power transfer between each circuit layer and use electromagnetic simulation software—Maxwell 3D—to simulate coupling coefficients of two inductive coils, which are key points of electric power transfer. The part of circuit analysis is about transmitting and receiving circuit, we analyze the power transfer efficiency of two resonant circuits which have complex impedances in the frequency domain. Then we simulate two coil structures—vertical helix coils and horizontal helix coils, incorporated with additionally auxiliary magnetic shieldings to improve coupling coefficients, to compare effects of electromagnetic coupling analyzed by Maxwell 3D software. Finally, we wind two structures made by coils mentioned above to measure the coupling coefficients and calculate the power transfer efficiency of simplified inductive circuit for coils with magnetic shieldings.

口試委員會審定書 і
誌謝 ii
中文摘要 iii
ABSTRACT iv
目 錄 v
圖目錄 viii
表目錄 xiii
第一章 緒論 1
1. 1 歷史背景 1
1. 2 傳輸方式 4
1.2.1 電磁感應(Electromagnetic Induction) 4
1.2.2 電磁諧振(Electromagnetic Resonance) 6
1.2.3 靜電感應(Electrostatic Induction) 8
1.2.4 電性傳導(Electrical Conduction) 11
1.2.5 輻射和微波(Radio and Microwave) 13
1.2.6 雷射光束(Laser Beam) 15
1. 3 近況回顧 16
1. 4 無線充電架構 20
1. 5 研究概要 24
第二章 理論介紹 26
2. 1 諧振電路 27
2.1.1 RLC串聯諧振電路 27
2.1.2 RLC並聯諧振電路 32
2. 2 重要參數 37
2.2.1 自感(Self Inductance) 37
2.2.2 互感(Mutual Inductance) 37
2.2.3 電阻(Resistance) 38
2.2.4 磁阻(Reluctance) 39
2.2.5 耦合係數(Coupling Coefficient) 40
2. 3 電路分析 41
2.3.1 工作頻率非諧振頻率 46
2.3.2 工作頻率為諧振頻率 51
2. 4 設計實務 59
2.4.1 工作頻率(Operating Frequency) 59
2.4.2 電感器與電容器之電阻 60
2.4.3 屏蔽層(Shielding) 61
第三章 電磁模擬 63
3. 1 多匝線圈之自感 66
3.1.1 立體纏繞線圈 68
3.1.2 平面纏繞線圈 70
3. 2 兩線圈間之耦合係數 72
3.2.1 立體纏繞線圈 73
3.2.2 平面纏繞線圈 85
3. 3 加入磁性屏蔽層後兩線圈間之耦合係數 100
3.3.1 圓盤形磁性屏蔽層 100
3.3.2 T柱形磁性屏蔽層 114
第四章 量測與效率計算 130
4. 1 實驗量測 130
4. 2 效率計算 135
第五章 結論與未來展望 139
5. 1 結論 139
5. 2 未來展望 140
REFERENCE 141



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