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研究生:吳昭德
研究生(外文):Jau-Der Wu
論文名稱:應用描述函數法估計整流器的諧波特性
論文名稱(外文):Applications of Describing Functions to Estimate the Harmonic Characteristics of AC/DC Rectifier
指導教授:吳穎強黃思倫黃思倫引用關係
指導教授(外文):Yieng-Chiang WuSy-Ruen Huang
學位類別:碩士
校院名稱:逢甲大學
系所名稱:自動控制工程學系
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:2002
畢業學年度:90
語文別:中文
論文頁數:76
中文關鍵詞:連續電流模式不連續電流模式
外文關鍵詞:Continuous Current ModeDiscontinuous Current Mode
相關次數:
  • 被引用被引用:1
  • 點閱點閱:244
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:1
整流器為目前廣泛應用於家電產品(電視機、錄放影機)與工業控制中的一種電源轉換器。在整流器設計中一般都使用LC濾波器來提高供電品質,但此種濾波電路的設計會因電感元件的非線性特性,而影響到整流器的工作模式,尤其當電感器工作電壓趨近飽和點時,電感器的電感量會逐漸降低,並導致整流器趨向於不連續電流的工作模式(Discontinuous Current Mode;DCM),同時使得濾波效果變差,此種現象將造成輸出電壓波形因諧波電流增大而產生畸變,並使負載設備遭受到損害。因此電感器的非線性特性對整流器的供電品質會產生很大的影響,是一個重要的研究主題。
本文擬提出一個數學估算式與電感器的設計程序,來估算電感器的有效電感量,同時亦可用於評估整流器在連續電流模式(Continuous Current Mode ;CCM)中所需之等效的最小電感量,因此可以作為未來設計LC濾波器的參考依據。論文中並以一個實際的電路及設計程序來模擬驗證本理論之正確性。
The rectifiers of AC/DC is applied largely in industry filed. The LC filter which is used by rectifiers are usually effected by the operating mode of rectifiers since the electrical characters of inductor is nonlinear. When the inductor is going to be saturated, the inductance will become disappear gradually. The rectifiers will be operating to Discontinuous Current Mode(DCM). In addition, the effect of the filter will become poor and cause the output voltage wave become aberration since the harmonic current become large. So, the impact of nonlinear characters on the equipment is very large. It is a very important study subject.
This thesis will address a mathematical estimated formula and the design process of the inductor. No matter what the inductance flux which generated by the two ports of the inductor is, the inductance could be measured effectively. Simultaneously, it also could be measured the minimum equivalent inductance for the rectifier at the Continuous Current Mode(CCM). It can be reference for the future design of LC Filter. In the thesis, it also used a real circuit and simulation to prove this theory.
第一章 緒論 1
1.1 前言 1
1.2 文獻研討 2
第二章 整流器的濾波特性之簡介 4
2.1 整流器特性的簡介 4
2.2 濾波器的功能簡介 7
2.3 電感器的基本電磁原理 11
2.4 電感器的磁滯曲線 15
第三章 描述函數法與等效電感 19
3.1 描述函數法簡介 19
3.2 描述函數法之等效電感量 22
3.3 雙斜率非線性電感之等效電感量 25
第四章 非線性電感器之應用 32
4.1 濾波儲能電感器簡介 32
4.2 非線性電感器之簡介 34
4.3 連續電流模式與不連續電流模式 38
4.4 全波整流器之L-C濾波器 40
4.5 非線性電感器之設計程序 49
4.6 非線性電感器之設計範例 51
第五章 實驗結果與討論 56
5.1 實驗結果與模擬 56
5.2 實驗討論 59
第六章 結論 60
參考文獻 61
附錄 64
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