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研究生:蔡奇謀
研究生(外文):Cai Ci-Mou
論文名稱:適用於備用電源之燃料電池發電系統
論文名稱(外文):Fuel Cell Generation System for Back-up Power
指導教授:周宏亮
指導教授(外文):Jou Hurng-Liahng
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:電機工程系
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:101
畢業學年度:100
語文別:中文
論文頁數:93
中文關鍵詞:備用電源主動箝位電流饋入式全橋電能轉換器三臂式電能轉換器燃料電池
外文關鍵詞:back-up poweractive clampingcurrent-fed full-bridge converterthree-leg power converterfuel-cell
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本論文發展一適用於備用電源之燃料電池發電系統,該系統係由兩級轉換器所組成,分別是主動箝位之電流饋入式全橋電能轉換器與三臂式電能轉換器。主動箝位之電流饋入式全橋電能轉換器用以提升燃料電池之電壓至直流埠,並且發展可降低燃料電池輸出電流漣波與有效減少直流埠之120Hz漣波量至燃料電池;三臂式電能轉換器具有三個埠,分別是一直流埠、一電池埠與一交流埠。系統依市電狀況操作於兩種不同之工作模式,(1)市電正常模式:負載由市電提供,且對電池組之鉛酸電池進行電池儲能,由於電能轉換器具主動式電力濾波器之功能,其能抑制市電電流之諧波成份,使市電電流趨近於正弦波與單位功因,在此模式下燃料電池不啟動;(2)備用電源模式:當燃料電池尚未投入時,電池組先單獨提供電能給負載;燃料電池啟動後,在此模式下以燃料電池為主電源提供一固定功率,而電池組為一輔助電源。最後,本論文使用數位訊號處理器(Digital Signal Processor)作為控制核心,完成一適用於備用電源之燃料電池發電系統之硬體雛型,實測結果證明此系統可達到期望之功能。
This thesis proposes a fuel-cell generation system for back-up power. This generation system is consisted of two power converter stages, including a current-fed full-bridge power converter with active clamping and a three-leg power converter. The current-fed full-bridge power converter with active clamping is used to step-up the fuel-cell voltage to the DC port. Besides, a control method is developed to reduce the ripple current of the fuel-cell and reduce the 120Hz ripple from the DC port. The three-leg power converter has three ports, namely a DC port, a battery port, and AC port. The operation of this generation system can be divided into two modes.It including (i) normal utility mode: the utility supplies power to the load to charge the battery set, and the power converter has the function of active power filter to suppress the utility current harmonics and the compensate for the reactive power, the fuel-cell doesn’t work in this mode; (ii) back-up power mode: when the fuel-cell does not work, the battery set is used to provides electrical power to the load, and then the fuel-cell provides a fixed power; in this mode, the fuel-cell is the main power source and the battery is the auxiliary source. Finally, a digital signal processing (Digital Signal Processor) based prototype is developed to verify the performance of this fuel cell generation system for back-up power. The experimental results show that the performance is as expected.
摘要 i
ABSTRACT ii
致謝 iii
目 錄 iv
表 目 錄 vii
圖 目 錄 viii
符號說明 xiv
第一章、前言 1
1.1 研究背景與動機 1
1.2 研究目的 2
1.3 論文架構 3
第二章、燃料電池與備用電源介紹 5
2.1 燃料電池 5
2.1.1 燃料電池結構 5
2.1.2 燃料電池之優點 7
2.1.3 燃料電池之極化損失 7
2.2 備用電源 10
2.2.1 不斷電電源系統 10
第三章、電池儲能與電力濾波器介紹 14
3.1 電池儲能系統 14
3.1.1 電池儲能系統功能介紹 14
3.1.2 電池簡介 16
3.1.3 鉛酸電池的簡介與使用方式 16
3.2 電池充電方法 18
3.3 電力濾波器 20
3.3.1 主動式電力濾波器 21
第四章、主動箝位之電流饋入式全橋電能轉換器 23
4.1 電壓饋入式與電流饋入式全橋電能轉換器介紹 23
4.2 電流饋入式全橋電能轉換器動作原理 24
4.3 主動箝位之電流饋入式全橋電能轉換器動作原理 29
4.4 控制原理 33
4.5 高頻變壓器設計 35
第五章、三臂式電能轉換器 42
5.1 三臂式電能轉換器介紹 42
5.2 三臂式電能轉換器分析 44
5.3 控制原理 46
5.3.1 市電正常模式 46
5.3.2 備用電源模式 48
5.4 市電電壓窗型偵測法 49
第六章、軟硬體介面及系統控制架構 50
6.1 週邊硬體電路 51
6.1.1 直流電壓回授電路 51
6.1.2 市電電壓檢測電路回授電路 52
6.1.3 電流回授電路 53
6.1.4 驅動電路 53
6.2 數位控制器 54
6.2.1 週邊設定 55
6.2.2 數位積分器 56
6.2.3 相位鎖定程式 57
6.3 系統架構控制 59
6.3.1 程式規劃 59
6.3.2 系統控制流程 61
第七章、實驗結果 64
7.1 市電正常模式 64
7.2 備用電源模式 70
7.2.1 主動箝位之電流饋入式全橋電能轉換器之實測結果 81
第八章、結論 86
8.1 總結 86
8.2 未來研究方向 86
參考文獻 88
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