考慮電網失真不平衡下三相反流器直接功 率控制之研製

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姓名

游孟璇(YU-MENG HSUAN) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

考慮電網失真不平衡下三相反流器直接功率控制之研製
(Development and Implementation of Direct Power Control for Three-Phase Inverters Considering Distortion Unbalanced Grid)

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至系統瀏覽論文 ( 永不開放)

摘要(中)

本論文著重研發於三相失真不平衡電網下併網型反流器的控制，改善失真不
平衡電網所造成的三相反流器輸出電流失真以及輸出功率漣波振盪。考慮失真不
平衡電網情況，所提漣波補償方法結合擴充功率及計算濾波電感與電容補償漣波
量，並重新推得一種基於靜止框下不平衡電網條件之直接功率控制策略，利用分
解電網端電壓與反流端電壓的耦合項將原有三相不平衡非線性時變系統轉換至
線性非時變系統，使控制器得以簡化。接著針對失真電網做諧波補償，此一方法
結合諧波解耦控制策略以提取電壓的基本頻率分量。最終透過所提方法經由模擬
結果進行分析，與實作建置一台 1.5kW 三相六開關反流器以驗證所提方法的有
效和正確性。

摘要(英)

This paper focuses on the development of grid-tied inverters under distorted and
unbalanced three-phase grids, aiming to improve the output current distortion and
power ripple caused by such grid conditions. Considering the situation of distorted and
unbalanced grids, the proposed ripple compensation method combines extension p-q
theory and calculating filter inductance and capacitance powers to compensate for
ripple. Furthermore, a direct power control strategy based on the stationary reference
frame is derived under unbalanced grid conditions. This strategy decouples the terms
between grid-side voltage and converter-side voltage and transfers the original three
phase unbalanced nonlinear time-varying system into a linear time-invariant system,
thereby simplifying the controller. Subsequently, harmonic compensation is addressed
for distorted grids. The proposed method combines harmonic decoupling control
strategies to extract the fundamental frequency component of the unbalanced grid
voltage. Finally, through simulation results and the implementation of a 1.5 kW three
phase six-switch inverter, the proposed methods are analyzed and verified for
effectiveness and correctness.

關鍵字(中)

★ 功率漣波補償

關鍵字(英)

★ Power Ripple Compensation

論文目次

目錄
摘要 I
ABSTRACT II
誌謝 III
目錄 IV
圖目錄 VII
表目錄 XVII
符號說明 XVIII
第一章緒論 1
1-1 研究背景及動機 1
1-2 文獻回顧 2
1-3 論文之貢獻 4
1-4 論文架構概述 5
第二章基本反流器介紹 6
2-1空間向量轉換 8
2-2鎖相迴路(PHASE-LOCK LOOP, PLL) 12
2-3鎖頻迴路(FREQUENCY LOCK LOOP, FLL) 15
2-3-1二階廣義積分正交訊號產生器(SOGI Quadrature Signal Generator)[2] 16
2-3-2雙二階廣義積分鎖頻迴路(Dual Second Order Generalized Integrator FLL, DSOGI-FLL)[2] 18
2-4電網平衡向量電流控制 21
2-4-1三相LCL濾波器等效模型推導 21
2-4-2三相反流器之建模與控制器設計 24
2-5 電網平衡直接功率控制 27
2-5-1 建立三相反流器交流側模組 29
2-5-2建立功率迴路線性控制器設計 30
第三章電網不平衡三相反流器控制介紹 32
3-1電網不平衡向量電流控制介紹 32
3-1-1 虛擬相電流調節 33
3-1-2 靜止框電流補償 36
3-2電網失真不平衡直接功率控制介紹 41
3-2-1正負序分離功率補償控制 41
3-2-2 擴充功率理論 45
3-2-3改良型功率補償控制 47
3-2-4失真電網補償 49
第四章所提三相反流器於失真不平衡電網之直接功率控制策略 54
4-1 LCL濾波器參數設計 55
4-1-1設計考量 55
4-1-2設計方法 57
4-2 併網下反流器功率補償 60
4-3 建立功率迴路控制器 66
第五章系統規劃與模擬驗證 72
5-1 模擬電路與元件設計參數 73
5-2 三相反流器向量電流控制模擬結果 85
5-3三相反流器線性化直接功率控制模擬結果 90
5-4 失真不平衡電網於線性化直接功率控制模擬結果 94
5-5 改良型功率補償控制策略模擬結果 101
5-6所提反流器控制策略模擬結果 107
第六章硬體電路製作與實作結果 113
6-1硬體與微控制器介紹 113
6-1-1 微控制器介紹與電路 113
6-1-2 硬體設備 115
6-1-3啟動流程 119
6-2 三相反流器向量電流控制實作結果 121
6-3三相反流器線性化直接功率控制實作結果 126
6-4 失真不平衡電網於線性化直接功率控制實作結果 130
6-5 改良型功率補償控制策略實作結果 138
6-6所提反流器控制策略實作結果 143
第七章結論與未來展望 149
7-1 論文內容總結 149
7-2 未來展望 150
參考文獻 151

參考文獻

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指導教授

廖益弘(Yi-Hung Liao)

審核日期

2024-8-9

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