臺灣博碩士論文加值系統

本論文研究為電壓模式控制半橋降壓轉換器輸入電壓以及負載電阻變化時的非線性行為，並考慮電感電流在連續導通模式下，進行其特性及混沌控制的研究。
首先把半橋降壓轉換器的開關狀態等效為降壓轉換器的狀態，並推導其等效數學模型。接著根據這個模型，使用MATLAB/SIMULINK建立電壓模式控制半橋降壓轉換器模型方塊圖，以輸入電壓及負載電阻作為變化參數並觀察其狀態時域波形圖及相平面圖，得以確實瞭解到轉換器由穩態直至混沌的種種非線性行為。
為了讓處在混沌狀態下的轉換器能夠做到有效控制，本論文接著使用MATLAB/SIMULINK提出時間延遲回授控制與參數共振微擾控制等兩種控制法，最後利用混沌的各態遍歷特性使轉換器能夠從混沌的狀態下受到控制並操作到穩定的狀態。

This thesis investigates the nonlinear behaviours of voltage-mode controlled half-bridge buck converter when the load resistance and input voltage are changed. And consider the inductor current in continuous conduction mode to study the characteristics of converter and chaotic control techniques.
Firstly, the equivalent switching states and the mathematical models of voltage-mode controlled half-bridge buck converter are derived. According to these models, MATLAB / SIMULINK is used to construct models of voltage-mode controlled half-bridge buck converter. With input voltage and load resistance as a parameter changes to observe the waveforms of time-domain and phase plane, and to comprehend the nonlinear behaviours that from steady state into chaos.
In order to effectively controlling the converter that in chaotic state, this thesis presents methods of resonant parametric perturbation control and time-delay feedback control to stabilize an unstable orbit in a chaotically operating converter using MATLAB / SIMULINK. Finally, the ergodic characteristics of chaos are used to control the converter from chaotic operation to fix period operation.

摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 vi
表目錄 viii
圖目錄 ix
第一章 緒論 1
1.1前言 1
1.2研究目的與動機 1
1.3本論文之貢獻 3
1.4本論文之組織與架構 3
第二章 混沌的基本概念 4
2.1前言 4
2.2混沌理論與應用發展的歷程 5
2.3混沌基本特性 7
2.4混沌的定義 9
2.5混沌的專有術語 10
2.6混沌在電力電子中的研究現況 14
第三章 電壓模式控制半橋降壓轉換器之非線性現象分析 17
3.1前言 17
3.2電壓模式控制半橋降壓轉換器工作原理及數學模型 18
3.2.1電壓模式控制半橋降壓轉換器工作原理 19
3.2.2電壓模式控制半橋降壓轉換器之數學模型 23
3.3電壓模式控制半橋降壓轉換器之MATLAB/ SIMULINK建模與非線性現象分析 25
第四章 電壓模式控制半橋降壓轉換器之混沌控制 36
4.1 前言 36
4.2 混沌控制方法及原理 37
4.3時間延遲回授控制法 38
4.3.1 電壓模式控制半橋降壓轉換器之時間延遲回授控制法 39
4.4參數共振微擾控制法 45
4.4.1 電壓模式控制半橋降壓轉換器之參數共振微擾控制法 45
第五章 結論與未來展望 55
參考文獻 57
附錄A 符號表 62
附錄B 碩士期間發表的論文 64

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