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研究生:沈得煒
研究生(外文):Te-Wei Shen
論文名稱:以鍵結圖結合虛擬電阻建模法解析開關時變電路之研究
論文名稱(外文):Using Bond Graph Combined with the Modeling Virtual Resistor to Solve Time Variant Switching Circuit
指導教授:曾國雄曾國雄引用關係
指導教授(外文):Kuo-Hsiung Tseng
口試委員:張瑞豐高文秀
口試日期:2012-06-22
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電機工程系所
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:2013
畢業學年度:100
語文別:中文
論文頁數:68
中文關鍵詞:鍵結圖開關模型建模Simulink能量方塊圖(SEBD)開關訊號虛擬電阻
外文關鍵詞:Bond GraphsSwitch ModelingSimulink Energy Block DiagramSwitch SignalVirtual Resistance
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本論文應用鍵結圖對開關元件進行建模,關於開關電路系統應用於鍵結圖建模之研究,過去文獻以能量切換結(Switched Power Junctions)來切換功率流之流向,或以調變式變換器(Modulated Transformer, MTF)內建數學方程式進行開關電路建模,而上述方法會有以下各種缺點:1.能量切換結與MTF難解決開關電路時變問題。2.能量切換結會產生兩種電路狀態,因此無法推導系統之轉移函數。3.系統零點與極點難以由能量切換結與MTF模型得知。這些方法都失去了鍵結圖的物理意義,為改善這些缺點,將開關上之電壓電流波形平均化,得到以電壓源、電流源與變壓器元件所組成的電路平均模型,此模型中電壓源及電流源皆包含小訊號成分,以虛擬電阻取代其小訊號來進行建模,並且透過鍵結圖之因果路徑與最短因果路徑,找出影響系統零點之元件。本論文以降壓型、升壓型及升降壓型三種基本轉換器為例,以鍵結圖配合虛擬電阻法進行建模,並透過因果路徑尋找應響系統零點之參數元件。使用虛擬電阻法有效解決開關元件應用於鍵結圖領域之問題,使模型更具有物理意義。使用鍵結圖建模法結合虛擬電阻的觀念有利於開關系統之分析,並且用鍵結圖之因果路徑與最短因果路徑可尋找系統之零點,遵循本論文所提出之方法將有利於往後開關電路之分析與設計。

This research attempts to model switch components based on bond graph. Past studies on this particular focus put emphasis on the direction of power flow controlled by Switched Power Junctions and switch modeling by mathematical formulas of Modulated Transformer (MTF). However, the above methods come with the following flaws: (1) Switched Power Junctions and Modulated Transformer cannot effectively solve time-dependent problem; (2) Switched Power Junctions generate two states where transfer function cannot be deduced; (3) system zeros and poles are hardly acquired through the model of Switched Power Junctions and Modulated Transformer. These mentioned methods do not realize the full utility of bond graph. In order to correct the flaws, voltage and current waveforms of switch are averaged to acquire the average circuit model, which is constructed by voltage source, current source, and transformer components. The voltage source and current source in this model all include small-signal, which is replaced by virtual resistance for modeling. Components that affect zeros are found through casual path and the shortest casual path on bond graph. This research takes three basic converters - buck, boost, and buck-boost - as example. The modeling is based on bond graph and virtual resistance; parameters that affect zeros are found through casual path. Virtual resistance is used to effectively solve problems resulting from switch components that are applied in bond graph, making the model more significant. Combined with virtual resistance, modeling based on bond graph can benefit the analysis of switch system. Founded on this modeling and system zeros that are found by using casual path and the shortest casual path, the methodology proposed in this research will benefit future analysis and design of switch circuits.

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研究背景與動機 1
1.2文獻探討 2
1.3本論文之貢獻 3
1.4研究流程 4
1.5論文概述 5
第二章 基本電源轉換器 7
2.1轉換器之簡介 7
2.1.1降壓型轉換器之基本原理 8
2.1.2升壓型轉換器之基本原理 11
2.1.3升降壓型轉換器之基本原理 14
第三章 鍵結圖理論 18
3.1鍵結圖基本原理 18
3.2各元件之因果關係 19
3.3鍵結圖基本元件 20
3.3.1供能元件(Se、Sf) 20
3.3.2鍵結元件(Junction) 20
3.3.3阻性元件(R) 21
3.3.4容性元件(C) 21
3.3.5慣性元件(I) 22
3.3.6能量傳遞與轉換元件(TF、GY) 23
3.4電路圖轉換鍵結圖規則 24
3.4.1觀察法 25
3.4.2節點法 26
3.5因果路徑對應系統零點參數 29
3.5.1因果路徑(Causal path) 29
3.5.2最短因果路徑(Shortest causal path) 30
3.6轉換器之鍵結圖模型 31
3.6.1降壓型轉換器鍵結圖模型 31
3.6.2升壓型轉換器鍵結圖模型 32
3.6.3升降壓型轉換器鍵結圖模型 32
第四章鍵結圖轉換能量方塊圖(SEBD)模擬模型 33
4.1鍵結圖轉換SEBD模擬模型規則 33
4.2 電源轉換器SEBD模擬模型 37
4.2.1降壓型轉換器SEBD模擬模型 37
4.2.2升壓型轉換器模擬 38
4.2.3升降壓型轉換器SEBD模擬模型 40
第五章 開關等效模型 42
5.1能量切換結(Switch Power Junction) 42
5.2電路平均法(Circuit Averaging Modeling) 46
5.2.1降壓型轉換器之平均電路模型 47
5.2.2升壓型轉換器之平均電路模型 49
5.2.3升降壓型轉換器之平均電路模型 51
5.3虛擬電阻等效建模法應用於時變開關電路系統之模型建立 53
5.4結果與討論 60
第六章 結論與未來研究方向 62
6.1結論 62
6.2未來研究方向 64
參考文獻 65



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