本論文將回授擾動調變架構從單相直流至交流轉換器延伸至應用於三相直
流至交流轉換器。由於回授擾動調變架構有雜訊塑型的特性，與傳統的向量空間
脈波寬度調變比較有兩個優勢，在輸入訊號較小時仍然有很好的性能，修正由於
元件非理想及怠滯(dead time)所造成的不完整開關波型，這些特性是回授擾動調
變架構可以替代傳統調變方式強而有力的原因。實現回授擾動應用於三相調變時，
使用的數位控制器為 Digital signal processor (DSP) F28069，驅動功率達 2KW 的
三相換流器，實際測試後效能指標總諧波含雜訊失真 THD+N 可低於 2%(量測頻
寬為 2.4KHz)，此時輸入電壓命令為 100V。

Recently developed feedback dithering modulation is extended from
single-phase to three-phase in this thesis. The feedback dithering modulation scheme,
owing to its feedback noise shaping nature, has advantages over the popular SVPWM
in two aspects: improvement of modulation signal quality for low input signal levels
and insensitivity to imperfect switching waveforms caused by non-ideal switching
devices and inevitable deadtime. These properties make the feedback dithering
modulation an attractive alternative to the conventional modulation schemes. The
three-phase feedback dithering modulation scheme is implemented on the DSP
TMS320F28069 to switch a 2kW three-phase inverter. The experimental result shows
that there is less than 2% of total harmonic distortion plus noise (measured up to
2.4kHz) present at the inverter output (300 Volt DC-link voltage, 100 volt peak to
peak output three phase sinusoidal wave.).

致 謝 ii
摘 要 iii
Abstract iv
第 一 章 緒論 1
1.1 研究動機 1
1.2 文獻回顧 2
1.3 論文貢獻及組織 4
第 二 章 回授擾動調變技術 5
2.1 擾動簡介 5
2.2 擾動調變技術 6
2.3 回授擾動調變工作原理 9
第 三 章 回授擾動調變應用於三相直流至交流轉換器 13
3.1 三相直流至交流轉換器簡介 13
3.2 三相直流至交流轉換器電壓開關模式 15
3.3 三相直流至交流轉換器之座標軸轉換 18
3.4 回授擾動調變應用於三相換流器 20
3.5 回授擾動調變用於三相與單相間異同 22
第 四 章 回授擾動調變系統之設計與模擬 回授擾動調變系統之設計與模擬 25
4.1 雜訊塑形濾波器設計 26
4.2 擾動訊號設計 29
4.3 預防量化器過載設計 34
4.4 效能比較 39
第 五 章 實現與量測 43
5.1 電路架構 43
5.1.1 三相換流器電路 44
5.1.2 回授電路 46
5.2 程式架構 49
5.3 性能量測 53
第 六 章 結論 55
參考文獻 56
附錄 A 回授擾動調變系統之穩定性驗證 58
附錄 B 三相變頻器常見之調變方式 三相變頻器常見之調變方式 61
附錄 B.1 三相變頻器之脈波寬度調變 61
附錄 B.2 三相變頻器之弦式脈波寬度調變(SPWM) 63
附錄 B.3 三相變頻器之電壓空間向量脈波寬度調變(VSVPWM) 65
附錄 C Ʃ - ∆ 調變應用於三相換流器 調變應用於三相換流器 76
附錄 C.1 Ʃ - ∆ 調變簡介 . 76
附錄 C.2 Ʃ - ∆ 調變器應用於三相調變 80
附錄 C.3 Ʃ - ∆ 調變器與 SVPWM 模擬 81

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