臺灣博碩士論文加值系統

本文為研製一雙向補償DC/DC電力轉換器，目的是提供燃料電池做能量管理及負載分配。由於燃料電池本身沒有能量儲存功能，且輸出電壓容易受到負載變動及燃料電池極化損失的影響，而造成直流輸出端電壓不穩定。因此需利用電力電子技術去提供系統能量分配及補償。本文分成三部份，首先探討燃料電池的基本特性以做為轉換器設計的參考，第二部份則針對DC/DC轉換器雙向控制技術及單相變流器調變技術加以探討，第三部分整合DC/DC轉換器與單相變流器來建構一完整的系統，並測試其運作效能。
本文另建立DC/DC功率轉換器之模式，以及數位功率控制器的設計。實體製作方面，採用高性能、低成本之數位訊號處理器(DSP,TMS320LF/LC2407A)為控制核心，以減少硬體電路的成本。最後完成500W的實體系統，並由實驗測試結果加以驗證分析。

This thesis designs a bi-directional DC/DC converter to provide energy management and load sharing for a fuel cell power system. Because the fuel cell system does not have the capability of energy storage, the output voltage of the system is easily affected by the load variations and polarization loss, therefore it is necessary to utilize power electronic techniques for electric energy sharing and compensation. This thesis consists of three parts. The first part focuses on the basic characteristic of the fuel cell system in order to provide guideline for power converter design. The second part aims at the DC/DC bi-directional control technique and single-phase PWM inverter control with sinusoidal pulse width modulation (SPWM) technique. The third part integrates the system with a DC/DC converter and a single-phase inverter. The performance and efficiency of the system is measured.
In this thesis, DC/DC power converter models were constructed with a DSP-based controller. A high performance digital signal processor (DSP, TMS320LF2407A) was used to implement the system for reducing the circuit components and system cost. The experimental results on a 500-W prototype circuit were provided to verify the analysis and performance of the system.

中文摘要 -i
英文摘要 -ii
誌謝 -iii
目錄 -iv
表目錄 -vi
圖目錄 -vii
符號說明 -x



第一章、 緒論-1
1.1 研究動機-1
1.2 研究目的-2
1.3 論文大綱-3

第二章、 燃料電池基本特性分析-4
2.1 何謂燃料電池-4
2.2 燃料電池種類與應用-5
2.3 燃料電池發電原理-8
2.4 燃料電池極化影響-10
2.5 燃料電池軟體測試平台-11

第三章、 電力轉換器拓樸架構原理分析-13
3.1 前言-13
3.2 切換式直流-直流電路動作原理及架構-14
3.2.1 切換式直流-直流轉換器之控制-14
3.2.2 降壓式轉換器-16
3.2.3 升壓式轉換器-19
3.3 雙向直流截波器分析及控制-21
3.4 變流器基本原理分析-24
3.4.1變流器架構-24
3.4.2正弦脈波寬度調變-25

第四章、 燃料電池電力轉換器系統架構分析-30
4.1 前言-30
4.2 系統架構說明-31
4.3 直流-直流升壓器與雙向轉換器系統控制分析-32
4.3.1 燃料電池供電模式-33
4.3.2 電池充電模式-34

4.3.3 暫態響應補償模式-35
4.3.4 系統初步測試結果-36

4.4 變流器系統控制分析與實驗結果-40

第五章、 軟、硬體規劃與實驗結果分析-46
5.1 前言-46
5.2 硬體電路設計-46
5.2.1電壓感測電路-46
5.2.2閘極驅動電路-49
5.2.3電流感測電路-50

5.3 數位信號處理器-51
5.4 軟體規劃-52
5.5 實驗結果-54

第六章、 結論與未來研究方向-66
6.1 結論-66
6.2 未來研究方向-66

參考文獻-68
附錄一 系統實體照片-70

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