隨著越來越多T型逆變器的應用場合，其可靠度也漸漸受到關注。本文藉著探討三階T型逆變器之電路動作模式，提出一新型偵測故障相之方式並結合判斷故障相電流平均值以及電容電壓不平衡之情況用以定位故障開關之位置，並以載波脈波寬度調變實現故障容錯控制策略，使調變機制更易於實現，並且加入中性點電壓平衡控制。最後以實驗室等級之電路原型實現，驗證本論文提出之開關故障容錯策略之可行性。

As there are more applications of T-type inverter, the concern of the inverter reliability has been increasing. This thesis investigates the operation modes of three-level T-type inverter circuit, proposed a new method to detect fault phase .The proposed method can locate fault switch by detecting the average value of phase current and the situation of unbalance voltage of capacitors. Carrier-based pulse width modulation is applying to achieve the tolerance control, and making the modulation scheme more easier to implement. A neutral-point voltage balance control for three-level T-type inverter is also applied. Finally, the availability and performance of the proposed of open-circuit fault tolerant control are verified with the laboratory prototype.

審定書 i
致謝 ii
摘要 iii
Abstract iv
目錄 v
圖目錄 viii
表目錄 xiii
第一章 緒論 1
1.1 研究背景 1
1.2 研究背景與動機 1
1.3 論文大綱 3
第二章 文獻回顧 4
2.1 簡介 4
2.2 T型逆變器於開路故障之電壓及電流分析與偵測 5
2.2.1 半橋開關(Sx1、Sx4)故障分析 (x=a、b、c) 8
2.2.2 中性點開關(Sx2、Sx3)故障分析 (x=a、b、c) 10
2.2.3 T型逆變器於開關故障之偵測 12
2.3 T型逆變器開關故障容錯策略控制 15
2.3.1 半橋開關(Sx1、Sx4)容錯策略控制 15
2.3.2 中性點開關(Sx2、Sx3)容錯策略控制 20
2.4 中性點電壓控制 21
2.5 總結 22
第三章 T型逆變器故障偵測原理與容錯策略控制 23
3.1 三階T型逆變器動作原理與調變機制 23
3.1.1 同相階層式脈波寬度調變 24
3.2 逆變器故障偵測原理 26
3.2.1 故障相偵測原理 26
3.2.2 故障開關偵測原理 29
3.3 載波脈波寬度調變於故障容錯策略控制 29
3.3.1 半橋開關(Sx1、Sx4)容錯策略控制 30
3.3.2 中性點開關(Sx2、Sx3)容錯策略控制 32
3.4 中性點電壓控制 33
3.5 總結 36
第四章 模擬結果與分析 37
4.1 簡介 37
4.2 T型逆變器之開關故障模擬 37
4.2.1 半橋開關(Sx1、Sx4)故障模擬 39
4.2.2 中性點開關(Sx2、Sx3)故障模擬 44
4.3 T型逆變器故障偵測模擬 49
4.3.1 故障相偵測模擬 53
4.3.2 故障開關偵測模擬 56
4.4 T型逆變器容錯控制策略模擬 60
4.4.1 半橋開關(Sx1、Sx4)容錯控制策略模擬 61
4.4.2 中性點開關(Sx2、Sx3) 容錯控制策略模擬 68
4.5 中性點電壓平衡策略模擬 75
第五章 實驗結果與分析 77
5.1 實驗設計 77
5.2 T型逆變器故障偵測 80
5.2.1 故障相偵測 80
5.2.2 故障開關偵測 82
5.3 T型逆變器容錯策略 85
5.3.1 半橋開關(Sx1、Sx4)容錯控制策略 85
5.3.2 中性點開關(Sx2、Sx3) 容錯控制策略 93
5.4 中性點電壓平衡策略 101
5.5 結論 102
第六章 結論與未來研究方向 103
6.1 結論 103
6.2 未來研究方向 103
參考文獻 104

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