本論文提出一應用於太陽能發電系統之十一階直流-交流電能轉換介面，所發展之太陽能發電系統是由一太陽能電池陣列、一四埠式直流-直流電力轉換器及一不對稱T型多階逆變器所組成。四埠式直流-直流電力轉換器結合一升壓式轉換器與匝數比為2:1之變壓器產生呈倍數關係之輸出電壓提供不對稱T型多階逆變器之直流匯流排電壓，不對稱T型多階逆變器藉由兩T型功率開關臂之切換將四埠式直流-直流電力轉換器之輸出電壓轉換成在交流輸出端之十一階交流電壓，經由濾波電感產生一具弦波電流饋入配電系統，由於該不對稱T型多階逆變器只使用9個功率開關便可輸出十一階之交流電壓，可減少功率開關使用的數量以簡化電路，並降低輸出濾波電感之容量，本論文將以數位訊號處理晶片TMS320F28335以及CPLD 晶片EPM1270T144C5N為控制器完成所提出之應用於太陽能發電系統之十一階直流-交流電能轉換介面之硬體雛型以驗證其功能。

This thesis develops a solar power generation system with eleven-level DC-AC power conversion interface. The developed solar power generation system is composed of a solar cell array, a dual-output DC-DC power converter and an asymmetric T-type multilevel inverter. The dual-output DC-DC power converter combines a boost power converter and a transformer with a turn ratio of 2:1 to generate output voltages with a multiple relationship to provide the DC bus voltage of the asymmetric T-type multilevel inverter. The asymmetric T-type multilevel inverter further converts the DC output voltages of dual-output DC-DC power converter into eleven-level AC voltage at the AC output terminals by controlling two T-type power-electronic arms. A sinusoidal current is generated by the asymmetric T-type multilevel inverter through the filter inductor injecting into the distribution power system. Only nine power electronic switches are used in the asymmetric T-type multilevel inverter to generate an eleven-level AC voltage, the number of power electronic switches used is reduced to simplify the power circuit. In additional, the capacity of the filter inductor is reduced. A digital signal processing chip TMS320F28335 and A CPLD chip EPM1270T144C5N are used as controller to complete a hardware prototype to verify the performance of the proposed eleventh-level DC-AC power conversion interface for solar power generation system.

目錄
摘要 I
ABSTRACT II
誌謝 III
圖目錄 VI
表目錄 X
第一章 緒論 1
1-1前言 1
1-2 研究目的 2
1-3 論文大綱 4
第二章 多階逆變器 5
2-1傳統多階逆變器[8]-[10] 5
2-1-1 飛輪電容式多階逆變器 5
2-1-2 二極體箝位式多階逆變器 8
2-1-3 疊接橋式多階逆變器[18]-[20] 10
2-2 T型多階逆變器 13
2-2-1 基本T型逆變器 13
2-2-2 T型五階逆變器[23] 16
2-2-3 T型七階逆變器[24] 20
2-2-4 不對稱T型七階逆變器[25] 24
2-3 多階逆變器比較 28
第三章 應用於太陽能發電系統之十一階直流-交流電能轉換介面 29
3-1 太陽能發電系統電路結構 29
3-2 四埠式直流-直流電力轉換器 30
3-2-1 操作原理 31
3-2-2 控制方塊 35
3-3 不對稱T型多階逆變器 36
3-3-1 操作原理 37
3-3-2 控制方塊 47
第四章 模擬分析 50
4-1 性能分析 50
4-2 功率半導體元件之損耗 52
4-2-1 二極體之損耗 52
4-2-2 MOSFET之功率損耗 52
4-2-3 IGBT之功率損耗 53
4-3 十一階直流-交流轉換介面之損耗分析 54
第五章 實驗結果 60
5-1 四埠式直流-直流電力轉換器之實測結果 62
5-2 不對稱T型多階逆變器之實測結果 62
5-3 應用於太陽能發電系統之十一階直流-交流電能轉換介面實測結果 66
第六章 結論與未來展望 71
6-1 結論 71
6-2 未來展望 72
參考文獻 73

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