結合零序回授補償與無通訊之載波同步於並聯雙向交直流轉換器之環流抑制

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姓名

陳炯燁(Jiong-Ye Chen) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

結合零序回授補償與無通訊之載波同步於並聯雙向交直流轉換器之環流抑制
(Circulating current suppression of paralleled bidirectional AC/DC converters with zero-sequence  compensation and carrier synchronization without communication)

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摘要(中)

本論文提出一種結合零序回授補償與無通訊之載波同步，應用於並聯雙向交直流轉換器之環流抑制，對於高頻開關零序環流與三倍基頻分量零序環流，皆有抑制效果。隨著電力電子的高速發展，對於高功率轉換器的需求也日漸提升，使用並聯的多模組化轉換器，有助於提高系統性能並降低成本，不僅可以增加額定容量，還可以提高供電系統的餘裕。然而，當轉換器間有不匹配參數時，由於轉換器PWM控制策略或時序不同，會產生非預期路徑上的零序環流，導致電流失真、降低系統性能。
透過所提控制法，對三倍基頻諧波環流使用回授控制消除零序環流，藉由無通訊的載波同步法，消除轉換器間載波時序不同造成環流的高頻包絡線，並且可以在整流模式與反流模式下雙向進行，達到交直流功率潮流雙向皆適用的效果。
本論文透過模擬與實作，驗證所提方法，對於兩台並聯雙向交直流轉換器，在多種條件不匹配情形下，皆能達到同時抑制零序環流的高頻開關成份與三倍基頻效果，透過消除零序環流，可以減少轉換器內部三相電感電流的失真，驗證了所提方法的可行性。

摘要(英)

In this thesis, a method combing zero-sequence  feedback compensation and carrier synchronization without communication is proposed for the zero sequence circulating current (ZSCC) suppression of paralleled bidirectional AC/DC converters. Both the high frequency switching ZSCC component and the triple fundamental frequency ZSCC component are suppressed. Due to the rapid development of power electronics, the demand for high-power converters is also increasing day by day. The use of parallel multi-modularized converters has benefitsefit to improve the system performance and reduce the total cost. It not only can increase the system power capcity, but also can improve the margin of the power rating. However, when there exist mismatched parameters between paralleled converters, due to the different PWM strategy and timing of converters, ZSCC on the unexpected path will be generated, resulting in current distortion and system performance degradation.
Through the proposed control method, The ZSCC is eliminated by using feedback control without communication. Using carrier synchronization without communication, the high frequency envelope caused by different carrier timings between converters is reduced. and it can be utilized in both the rectifier mode and inverter mode.
For two paralleled AC/DC bidirectional converters, the high frequency switching ZSCC components and triple fundamental frequency ZSCC can be suppressed simultaneously under a variety of conditions. By eliminating the ZSCC, the distortion of the three-phase current in each paralleled converter can be reduced. Through the simulation and experiment, the validity of the proposed method is verified.

關鍵字(中)

★ 並聯雙向交直流轉換器
★ 零序環流
★ 載波同步

關鍵字(英)

★ Paralleled bidirectional AC/DC converter
★ Zero-sequence circulating current(ZSCC)
★ Carrier synchronization

論文目次

摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vii
表目錄 xxiv
專有名詞與符號說明 xxv
第一章緒論 1
1-1 研究背景與動機 1
1-2 文獻回顧 4
1-3 論文之貢獻 6
1-4 論文架構概述 7
第二章雙向交直流三相六開關轉換器 8
2-1 前言 8
2-2 三相六開關交直流轉換器電路架構 8
2-3 單台雙向交直流轉換器之控制 9
2-3-1 座標軸轉換與空間向量脈寬調變 9
2-3-2 鎖相迴路法 11
2-3-3 雙迴路控制法 12
2-3-4 脈波寬度調變生成 15
2-4 整體控制架構分析 19
第三章多台並聯雙向交直流轉換器 21
3-1 前言 21
3-2 多台並聯雙向三相六開關轉換器架構 22
3-3 環流定義 23
3-4 零序環流生成條件與討論 25
3-5 交錯載波(IIDPWM)控制法 29
3-5-1 空間向量分析 29
3-5-2 空間向量選擇 31
3-5-3 載波切換準則 32
3-5-4 擴展至N台並聯轉換器 33
3-6 零軸dq回授補償控制法 34
3-6-1 前言 34
3-6-2 並聯反流器之等效電路模型 35
3-6-3 環流表現分析 38
3-6-4 零序環流控制 40
3-6-5 0d-0q軸回授設計法 44
第四章所提方法之控制策略 46
4-1 前言 46
4-2 三角載波相位同步 46
4-3 零軸回授補償控制法 48
4-3-1 二階廣義積分控制法(SOGI) 48
4-3-2 並聯雙向交直流轉換器之等效電路 49
4-3-3 0-0軸回授設計法 50
4-4 整體控制架構分析 52
第五章系統架構與模擬結果 54
5-1 前言 54
5-2 模擬電路與元件參數 54
5-3 整流模式模擬結果 58
5-3-1 1st DPWM1 / 2nd DPWM1 59
5-3-2 1st SPWM / 2nd SVPWM 61
5-3-3 1st SVPWM / 2nd SPWM 65
5-3-4 1st SPWM / 2nd DPWM1 68
5-3-5 1st DPWM1 / 2nd SPWM 72
5-3-6 1st SVPWM / 2nd DPWM1 75
5-3-7 1st DPWM1 / 2nd SVPWM 79
5-4 反流模式模擬結果 82
5-4-1 1st DPWM1 / 2nd DPWM1 82
5-4-2 1st SPWM / 2nd SVPWM 85
5-4-3 1st SVPWM / 2nd SPWM 88
5-4-4 1st SPWM / 2nd DPWM1 92
5-4-5 1st DPWM1 / 2nd SPWM 95
5-4-6 1st SVPWM / 2nd DPWM1 99
5-3-7 1st DPWM1 / 2nd SVPWM 102
第六章實作電路與量測結果 106
6-1 實作電路 106
6-1-1 數位控制器 109
6-1-2 類比轉數位訊號電路(ADC) 110
6-1-3 數位轉類比訊號電路(DAC) 114
6-1-4 光耦合驅動電路 116
6-2 整流模式實作波形 118
6-2-1 載波同步實作情形 118
6-2-2 1st DPWM1 / 2nd DPWM1 123
6-2-3 1st SPWM / 2nd SVPWM 125
6-2-4 1st SVPWM / 2nd SPWM 129
6-2-5 1st SPWM / 2nd DPWM1 132
6-2-6 1st DPWM1 / 2nd SPWM 136
6-2-7 1st SVPWM / 2nd DPWM1 139
6-2-8 1st DPWM1 / 2nd SVPWM 143
6-3 反流模式實作波形 147
6-3-1 載波同步實作情形 147
6-3-2 1st DPWM1 / 2nd DPWM1 151
6-3-3 1st SPWM / 2nd SVPWM 153
6-3-4 1st SVPWM / 2nd SPWM 157
6-3-5 1st SPWM / 2nd DPWM1 160
6-3-6 1st DPWM1 / 2nd SPWM 164
6-3-7 1st SVPWM / 2nd DPWM1 168
6-3-8 1st DPWM1 / 2nd SVPWM 171
第七章結論與未來展望 175
7-1 論文內容總結 175
7-2 未來研究方向 177
參考文獻 178

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指導教授

廖益弘(Yi-Hung Liao)

審核日期

2022-9-6

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