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系統識別號 U0026-2607201113184100
論文名稱(中文) 疊層降壓式壓電變壓器之研究與在充電器上應用
論文名稱(英文) Study of Step-Down Multi-Bulk Piezoelectric Transformers (PT) and Their Applications on the Chargers
校院名稱 成功大學
系所名稱(中) 電機工程學系碩博士班
系所名稱(英) Department of Electrical Engineering
學年度 99
學期 2
出版年 100
研究生(中文) 黃聖凱
研究生(英文) Sheng-Kai Huang
學號 N26981064
學位類別 碩士
語文別 中文
論文頁數 83頁
口試委員 指導教授-朱聖緣
口試委員-李文熙
口試委員-洪群雄
口試委員-莊陽德
口試委員-陳立軒
中文關鍵字 壓電變壓器  等效電路  充電器 
英文關鍵字 Piezoelectric transformer  Equivalent circuit  Charger 
學科別分類
中文摘要 本文探討疊層型降壓式壓電變壓器之設計、製作與性能測試,並將其應用於充電器上,以提供產品所需之低壓直流電源。首先利用壓電材料製作出直徑為25mm的圓盤型環狀電極壓電變壓器,藉由改變厚度、輸出入電極面積比、疊層數等,觀察其壓電等效電路的變化,研究其對降壓式壓電變壓器特性的影響。再利用matlab模擬驗證等效電路理論推導所得到的結果。最後發現在厚度0.5mm,疊層數為3,輸出入電極面積比1 : 3的壓電變壓器,其匹配負載電阻為10Ω情況下有最高輸出功率有3.5W、電壓增益約0.05V/V及元件效率約92%,與濾波整流電路結合,成功的製作出充電器並成功的使一般市用手機充電。
英文摘要 The purpose of this paper is to investigate the design, fabrication and performance test of the step-down multi-layer piezoelectric transformers (PT). It can provide a low voltage DC power and applie to a charger. First of all, we use piezoelectric material to produce the disk-type PT which diameter is 25mm and has a ring-shaped gap circle on the silver electrode. We observed the variations of the PT equivalent circuit with varying thickness, electrode area ratio of input and output, laminated. Besides we study the effects of that on step-down PT. Later, we use Matlab to simulate, analyze and test the inferential results of PT equivalent circuit. We finally found that the PT with thickness of 0.5mm, level 3, the input and output electrode area ratio is 1:3, and it’s matched load is 10Ω which has the highest output power 3.5W, voltage gain is about 0.05V/V and the efficiency can reach about 92%, which can combine with the rectifier to produce the charger, and mobile phone can be charged successfully.
論文目次 摘要 III
Abstract IV
目錄 VII
第一章 緒論 1
1.1 研究背景與動機 1
1.2 論文架構 7
第二章 原理 8
2.1 壓電效應 8
2.2 壓電諧振體 11
2.3 壓電特性參數 13
2.3.1 頻率常數N(frequency constant) 13
2.3.2 機電耦合因數(electromechanical coupling factor, K) 13
2.3.3 機械品質因數(mechanical quality factor) 14
2.4 介電原理 15
2.4.1 介電理論 15
2.4.2 介電損失(dielectric loss) 16
2.5 壓電變壓器基本原理 21
2.5.1 壓電變壓器工作原理 21
2.5.2 壓電變壓器等效電路 21
2.5.3 疊層型壓電變壓器模型建立 24
2.5.4 雙阜網路分析法 25
第三章 製成步驟與量測 29
3.1 陶瓷體的特性分析與材料選擇 29
3.1.1 電性量測 29
3.1.2 溫度特性量測 33
3.1.3 材料選擇 33
3.2 壓電變壓器的製作 35
3.2.1 圓盤型環狀電極壓電變壓器的製作 35
3.2.2 疊層型圓盤環狀電極壓電變壓器的製作 37
3.3 壓電變壓器量測 38
3.3.1壓電變壓器等效電路量測 38
3.3.2壓電變壓器實際量測 38
第四章 結果與討論 40
4.1 前言 40
4.2 單層降壓型壓電變壓器特性探討 41
4.2.1 壓電特性參數分析 41
4.2.2 負載端對元件特性的影響 44
4.2.3 元件厚度對元件特性的影響 47
4.3 三層降壓型壓電變壓器特性探討 53
4.3.1 壓電特性參數分析 53
4.3.2 模擬 58
4.3.3 三層結構壓電變壓器的特性探討 64
4.3.4 溫度對元件影響的探討 68
4.4 壓電變壓器應用於充電器 71
4.4.1 電路架構 71
4.4.2 實際量測結果 73
第五章 結論 75
5.1 結論 75
5.2 未來研究方向 77
參考文獻 78
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