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研究生:賴建安
研究生(外文):Chien-An Lai
論文名稱:具有均流控制之單相變頻器並聯系統 的研製
論文名稱(外文):Design and Implementation of Parallel System for Single-phase Inverters with Current Sharing Control
指導教授:賴炎生
口試委員:張奕然黃明熙
口試日期:2016-07-16
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電機工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2016
畢業學年度:104
語文別:中文
中文關鍵詞:單相變頻器並聯系統均流控制
外文關鍵詞:single-phase inverterparallel systemcurrent sharing
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本論文主要研製一具有均流控制之單相變頻器並聯系統,系統架構由兩台直流/交流變頻器組成,包含全橋架構與LC輸出濾波器。並聯時利用電流控制器、環流控制器,抑制環流,減少變頻器間的電流不平衡,提高變頻器並聯時的可靠度,其次於系統中加入耦合電感,進一步改善均流問題。
單相變頻器系統規格為輸入直流電壓380V,輸出交流電壓110 V/60 Hz,單台變頻器額定功率1 kW,並聯系統額定功率2 kW,開關切換方式為雙極性切換,切換頻率19.2 kHz,經實驗測試,於各負載下,並聯系統電壓總諧波失真小於2%,變頻器間環流小於0.3A,半載效率達94%。
The main objective of this thesis is to design and implement a parallel system for single-phase inverters with current sharing control. The system consists of two DC/AC inverters, which are with full-bridge topology and LC output filter. Both current and circulating current controller are used to suppress the circulating current and thereby reducing the current in balance between two inverters and increase the system reliability. Moreover, coupled inductor are used to further improve current sharing.
The system specifications of single-phase inverter are as follows: input DC voltage = 380V, output AC voltage = 110 V/60 Hz, each inverter rated power = 1 kW, parallel system rated power = 2 kW. Bipolar switching method is used and the switching frequency = 19.2 kHz. Through experimental test, the total voltage harmonic distortion is less than 2%, and circulating current is less than 0.3A and efficiency is higher than 94% under half load condition.
摘 要 i
ABSTRACT ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻回顧與探討 2
1.2.1 控制器選用 2
1.2.2 有連接線均流控制 4
1.2.3 無連接線均流控制 6
1.2.4 被動式均流控制 7
1.3 研究方法 8
1.4 論文大綱 9
第二章 變頻器架構與電路模型 10
2.1 單相變頻器基本架構 10
2.2 正弦脈波寬度調變 12
2.3 單相變頻器等效模型 14
2.4 並聯系統等效模型 17
第三章 並聯系統設計 23
3.1 並聯系統硬體設計 23
3.1.1 輸出濾波器設計 23
3.1.2 回授電路設計 31
3.1.3 耦合電感設計 33
3.1.4 功率元件與驅動電路設計 37
3.2 數位控制器設計 38
3.2.1 電流控制器設計 42
3.2.2 環流控制器設計 44
3.2.3 輸出電壓控制器設計 47
3.3 程式設計流程 49
第四章 模擬與實驗結果 51
4.1 電路模擬 51
4.1.1 單相變頻器模擬 51
4.1.2 並聯系統模擬 52
4.2 實驗結果 59
4.2.1 加載測試 60
4.2.2 變載測試 70
第五章 結論與未來展望 74
5.1 結論 74
5.2 未來展望 74
參考文獻 75
附錄 78
符號彙編 79
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