本論文提出一具高升降壓比之新型雙向全波整流電路，可用於再生能源發電系統中需高升降壓比之電力轉換器。本文電路低壓側為全橋電路，經由變壓器連接高壓側，高壓側由兩個全波倍壓電路組成四倍壓整流電路。升壓模式時，功率開關之驅動利用相移控制降低功率開關承受應力，增加滿載時轉換效率，另一方面利用分時多工的控制策略，在不同時間點透過二極體對不同的電容充電，使輸出電容接近均壓，最後再將四組輸出電容疊加達到多倍壓的輸出。降壓模式亦利用分時多工的策略，四組電容藉由開關的切換產生雙極性電壓源，利用變壓器將能量傳遞到低壓側，使電容在不同時間點對負載進行放電，電容電壓亦可接近均壓。本文實際製作一具高升降壓比之雙向全橋全波整流電路，其升壓模式規格為輸入電壓24V、輸出電壓200V、額定功率100W，降壓模式規格為輸入電壓200V、輸出電壓24V、額定功率100W。實驗結果驗證所提出電路架構之雙向控制可行性，並在升降壓模式皆達到86%以上的轉換效率，此外由模擬與實測結果可看出本文所提出電路其二極體所承受電壓應力確實小於傳統倍壓整流電路，而輸出電容所承受電壓應力小於半波倍壓電路。因此本文提出之雙向電路可適用於需高升降壓比之再生能源發電系統轉換器。

This thesis proposes a novel bi-directional full-wave rectifier with higher step-up and step-down voltage ratio which can be used in renewable energy generation systems. The low-voltage side of this circuit is full-bridge topology, combined with transformer, and the high-voltage side is composed of two full-wave rectifier circuits to construct a four times voltage multiplier rectifier. In the boost mode, the power switches of low-voltage side are driving by phase-shift control to reduce the stresses on the power switches. Meanwhile, the Time Division Multiplex (TDM) control strategy is used to transfer energy from the output rectifier diodes to the output capacitors at different time intervals. TDM control strategy can reduce voltage stress of the output capacitors and rectifier diodes. The voltages of output capacitors can almost achieve equalizing voltage. The four times output voltage can then be realized due to the superposition of the output capacitor voltages. In buck mode, the different capacitors based on TDM control strategy can release energy to load in different time intervals. All capacitor voltages in the buck mode are also almost same. A novel bi-directional full-bridge full-wave rectifier with higher step-up and step-down voltage ratio is implemented in this thesis. The specifications for the boost and buck modes are 24V DC input, 200V DC output, and rated power 100W and 200V DC input, 24V DC output, and rated power 100W, respectively. Experimental results show that the bi-directional functionality of the proposed circuit can be achieved. Besides, the conversion efficiency for both boost and buck modes is above 86%. Experimental and simulated results also indicate that the voltage stresses of output capacitors and rectifier diodes in the proposed four times voltage multiplier rectifier is less than the conventional half-wave or full-wave rectifiers. Therefore, the proposed bi-directional circuit has great potential to be used in the converters of renewable energy generation systems requiring higher step-up and step-down voltage ratio.

論文審定書 i
誌謝 ii
摘要 iii
Abstract iv
目錄 v
圖目錄 vii
表目錄 xii
第一章 緒論 1
1-1 研究背景 1
1-2 研究動機 2
1-3 論文大綱 4
第二章 相關電路架構介紹 6
2-1雙向隔離與非隔離轉換器之介紹 6
2-1-1雙向非隔離型轉換器 6
2-1-2雙向隔離型轉換器 9
2-2相移全橋轉換器 12
2-2-1硬性切換及柔性切換 12
2-2-2諧振轉換器 15
2-2-3傳統相移全橋轉換器 16
2-3倍壓轉換器介紹 18
2-3-1半波與全波倍壓整流電路 18
2-3-2四倍壓整流電路 21
第三章 具高升降壓比之雙向全波整流電路 23
3-1電路架構分析 23
3-2升壓模式操作原理分析 32
3-3降壓模式操作原理分析 38
第四章 電路設計與控制 45
4-1電路元件與參數設計 45
4-1-1變壓器設計實例 45
4-1-2輸出整流二極體選擇 50
4-1-3輸出電容元件選擇 51
4-1-4功率開關元件選擇 51
4-1-5諧振電感設計實例 51
4-2周邊電路設計 52
4-3控制晶片設計 55
4-3-1TMS320F28335數位訊號控制器與CCStudio簡介 57
4-3-2程式設計流程介紹 60
第五章 電路模擬與實驗結果 64
5-1雙向全波整流電路模擬 64
5-1-1升壓模式 65
5-1-2降壓模式 75
5-2雙向全波整流電路實測 78
5-2-1升壓模式 80
5-2-2降壓模式 89
第六章 結論與未來展望 94
6-1結論 94
6-2未來展望 95
參考文獻 96

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