臺灣博碩士論文加值系統

三相四臂逆變器是一個用來減輕共模電壓優於三相三臂逆變器之系統。因此本
文針對共模電壓(CMV)，提出了適用於三相四臂逆變器搭配多載波脈波寬度調變
(PWM)之技巧，正弦 PWM(SPWM)和空間向量 PWM(SVPWM)兩種方法來降低
CMV。並將此方法用來探討在負載不平衡的狀況下，對系統帶來的影響。最後，在
利用實驗和仿真軟體 PSIM 平台來對其系統進行分析，驗證本文提出的解決方法的
正確性。

The three-phase four-leg inverter is a system for mitigating common-mode voltages
better than three-phase three-arm inverters. Therefore, for the common mode voltage
(CMV), two techniques for three-phase four-arm inverters with multi-carrier pulse width
modulation (PWM), sinusoidal PWM (SPWM) and space vector PWM (SVPWM) are
proposed. To lower the CMV. This method is used to explore the impact on the system
under load imbalance. Finally, the experimental and simulation software PSIM platform is
used to analyze its system to verify the correctness of the proposed method.

摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vi
表目錄 xiv
第一章 緒論 1
1.1 前言 1
1.2 論文架構 2
第二章 文獻回顧 3
2.2 SPWM(Sinusoidal PWM)方法 4
2.3 空間向量調變法 5
2.4 多載波PWM方法 6
第三章 操作原理 7
3.1 前言 7
3.2 SPWM及SVPWM 之電壓命令 9
3.3運用於多載波脈波寬度調變之SPWM 11
3.4運用於多載波PWM之SVPWM 15
第四章 模擬結果與分析 20
4.1 簡介 20
4.2 SPWM和SVPWM搭配多載波PWM之模擬分析 22
4.2.1 SPWM和SVPWM之訊號模擬 22
4.2.2 SPWM與SVPWM之負載電壓及電流模擬 38
4.2.3 SPWM與SVPWM之共模電壓及共模電流模擬 46
第五章 實驗分析與結果 56
5.1 實驗平台 56
5.2 實驗結果 58
5.2.1 SPWM與SVPWM之比較訊號0度及90度 58
5.2.2 SPWM與SVPWM之負載電壓及電流 66
5.2.3 SPWM與SVPWM之共模電壓及共模電流 74
5.3結論 82
第六章 結論 87
參考文獻 88
附錄 90

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