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研究生:吳彥霆
研究生(外文):Yan-Ting Wu
論文名稱:主動箝位順向式換流器研製
論文名稱(外文):Research and Implementation of an Active-Clamp Forward Inverter
指導教授:張健軒
指導教授(外文):Chien-Hsuan Chang
學位類別:碩士
校院名稱:義守大學
系所名稱:電機工程學系
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:2019
畢業學年度:107
語文別:中文
論文頁數:66
中文關鍵詞:順向式轉換器主動箝位電路全橋展開電路換流器
外文關鍵詞:Forward converterH-bridge unfolding circuitActive-Clamp circuitInverter
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本文所提出之主動箝位順向式換流器,採用主動箝位順向式直流-直流轉換器(Active-Clamp Forward DC-DC Converter)搭配低頻切換之全橋展開電路,以實現交流輸出。由於換流器之變壓器工作在一、三象限,使鐵芯的體積減小與成本降低。變壓器的能量重置則是藉由副開關與共振元件來達成,可以有效解決責務比的限制與主開關上過高的電壓應力,以減少換流器之成本。加上藉由共振元件與主、副開關,達成主、副開關之零電壓切換(ZVS)特性,可以有效的減少開關上的切換損失。並以dsPIC30F4011作為控制核心,提供主、副開關之互補SPWM控制訊號與簡化開關驅動電路之複雜度。最後,針對所提之主動箝位順向式換流器製作150W的雛型電路,以電腦模擬結果與實驗量測交互比對,來驗證所提之理論分析的正確性與可行性。
This thesis proposes an active-clamp forward inverter. The proposed inverter is developed with an active-clamp forward dc-dc converter, and then connecting with an H-bridge unfolding circuit to output low-frequency voltage. Because the transformer works in the first and third quadrants, it can reduce the volume of the core and the cost. This inverter solves the limitation of duty ratio and the voltage stress on the main switch by resting the flux of transformer wih the auxiliary switch and the clamp capacitor. The zero voltage switching (ZVS) is achieved by the resonant elements, the main switch and auxiliary switch. The zero voltage switching (ZVS) can effectively reduce the switching loss. The system uses the digital signal processor dsPIC30F4011, providing multiple sets of SPWM control signals, simplifying circuit complexity. Finally, a 150W prototype circuit is fabricated for the active-clamp forward inverter. The simulated and experimental results are measured to verify the correctness and feasibility of the proposed inverter.
中文摘要...............................................................................................................................i
英文摘要..............................................................................................................................ii
致謝..............................................................................................................................iii
目錄…...........................................…………..………………………………………………iv
圖目錄...............................................................................................................................vi
表目錄..............................................................................................................................viii
第一章 前言........................................................................................................................1
1-1 研究動機與目的............................................................................................1
1-2 文獻回顧................................................................................5
1-2-1 非隔離型單級式系統…............................................................................5
1-2-1 隔離型單級式系統…................................................................................5
1-3 論文大綱................................................................................6
第二章 主動箝位順向式換流器............................................................7
2-1 電路架構….................................................................................7
2-2 動作模式分析…......................................................................8
2-3 轉換器設計考量…......................................................................23
第三章 控制系統架構….........................................................................27
3-1 數位控制電路.........................................................................................27
3-1-1 數位訊號處理器…...........................................................................27
3-1-2 高速脈衝寬度調變模組…..................................................................30
3-1-3 類比/數位轉換模組.....................................................................34
3-1-4 控制程式流程..............................................................................35
3-2 類比控制電路.........................................................................................37
3-2-1 市電電壓取樣電路……………………………………..………….37
3-2-2 功率開關驅動電路……………………………..……..………….39
第四章 實驗結果與討論...............................................................................................40
4-1 電氣規格與設計實例.......................................................................................40
4-2 電路模擬與穩壓實驗結果..............................................................................43
第五章 結論與未來展望..................................................................................51
5-1 結論...............................................................................................51
5-2 未來展望..........................................................................................52
參考文獻..........................................................................................................53
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