臺灣博碩士論文加值系統

本文設計一種可用於單臂二極體箝位三階電力轉換器之非隔離式閘極驅動電路及研製一組相移式全橋直流/直流電力轉換器。本文中所發展之單臂二極體箝位三階電力轉換器之非隔離式閘極驅動電路係由靴帶式電荷泵浦電路及離散電子元件組成，將一組電壓源利用靴帶式電荷泵浦電路產生四組不同參考準位之獨立電源，並將四組脈寬調變信號利用定電流耦合方式進行信號準位之位移，利用四組不同參考準位之獨立電源及脈寬調變信號分別控制參考準位不同之四個電力電子開關。本文中將建立一硬體雛型進行測試，實測結果證明本論文所設計之二極體箝位三階電力轉換器之非隔離式閘極驅動電路之可行性。本文並將研究相移式全橋直流/直流電力轉換器，其功率開關可藉由相移控制方式及變壓器上漏感來達到零電壓導通的特性，降低功率開關上的切換損失，藉此提高直流/直流電力轉換器效率，本文並將研製相移式全橋直流/直流電力轉換器之硬體雛型，實測結果驗明相移式全橋直流/直流電力轉換器具有期望之功能。

In this paper, a non-isolated gate driver circuit is developed for driving the power electronic switches of the diode-clamped three-level power converter, and a phase-shift full-bridge DC/DC power converter is also developed. The developed non-isolated gate driver circuit is composed of the bootstrap-type charge pump circuit and discrete electronic devices. A voltage source using bootstrap charge pump circuit is used to generate four isolated power supplies and four pulse-width modulation signals using a constant current couple mode are used for shifting the signal level. Four different levels of independent power supplies and PWM signals are used to control power electronic switches. A prototype developed by discrete devices is built for verifying the performance of the developed non-isolated gate driver circuit. The experimental results show the feasibility of the developed non-isolated gate driver circuit. This paper will developed a phase-shifted full-bridge DC/DC power converter. The power switch can be controlled by the phase shift control method and using the leakage inductance of transformer to achieve zero voltage switch characteristics to reduce the switching losses. Therefore, the efficiency of DC/DC power converter can be improved. This will be the development phase-shifted full-bridge DC/DC power converter prototype hardware. Experimental results verify the phase-shifted full-bridge DC / DC power converter has the desired function.

摘 要 I
ABSTRACT II
致 謝 III
目 錄 IV
表 目 錄 VI
符 號 說 明 XI
一、 前言 1
1.1　 研究動機 1
1.2 研究目的 2
1.3　 論文大綱 3
二、 電力轉換器 4
2.1 具隔離之直流/直流電力轉換器 4
2.1.2 相移式全橋轉換器動作原理 12
2.2　 多階式電力轉換器原理 19
2.2.1　多階電力轉換器與二階電力轉換器之比較 19
2.2.2　多階電力轉換器之類型 20
2.2.3　二極體箝位式三階電力轉換器電路分析 21
三、 閘極驅動電路 27
3.1　 閘極驅動電路之類型 27
3.1.1　變壓器隔離閘極驅動電路 28
3.1.2 光耦合閘極驅動電路 32
3.1.3　靴帶式閘極驅動電路原理 34
3.2 二階式電力轉換器之靴帶式驅動電路 37
四、 相移式全橋直流/直流電力轉換器設計與研製 51
4.1　 電路規格與架構 51
4.2　 電力電路元件設計 52
4.2.1　功率開關元件 53
4.2.2　高頻變壓器 53
4.2.3　整流二極體的選用 62
4.3　 相移式控制器介紹 64
五、 相移式直流/直流全橋電力轉換器之實測結果 69
5.1 實驗系統架構 69
5.2 實測結果與波形 70
六、 結論 82
6.1　 總結 82
6.2　 末來研究方向 83
參 考 文 獻 84

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