臺灣博碩士論文加值系統

本論文之主要貢獻總結如下:首先提出僅用四個功率開關之新型交流變直
流轉換器其具有容易產生高輸出電壓、硬體簡單、及低成本之優點。又提
出新型之控制電路避免使用乘法器而使所控制之轉換器具單位功率因數、
可調直流輸出電壓及雙方向電力潮流之能力。其次提出兩種三相交流峰值
偵測技術以便後面各章使用，所提出之偵測器具瞬時響應及與頻率無關之
特性。第三部份，為解決傳統三相交流變直流轉換器其輸出直流電壓動態
響應較差之缺點。首先推導出轉換器之小信號模型，並配合前饋控制之技
術以達輸出電壓不受負載電流及交流電源變化之影響。第四部份，以前面
所提出之低成本三相脈寬調變轉換器及瞬時峰值偵測技術為基礎，將其應
用於固態同步電容器。此固態同步電容器具有產生連續變化之領前或滯後
虛功，並且具響應快及線電流低諧波失真等優點。最後，將前面所提之技
術應用於主動式電力濾波器並提出一簡單之正弦合成技術，於補償電流命
令之獲得不需偵測及計算負載電流之虛功成份，且不需交流電壓之信號故
即使在交流電壓有失真之情況亦不受影響。

COVER
ABSTRACT
CONTENTS
LIST OF FIGRUES
LIST OF TABLES
1 Introduction
1.1 Motivation
1.2 Literature Survey
1.3 Contributions of the Dissertation
1.4 Outline of the Contents
2 A Novel Three-Phase Voltage-Doubler Current-Controlled Reversible AC to DC Converter
2.1 Introduction
2.2 Circuit Configuration and Operation Principle
2.3 Mathematical Model of the Converter
2.4 An Accurate Simulation Model
2.5 Design of The Proposed Converter
2.6 Simulation and Experimental Results
3 Two Novel INstantaneous Amplitude Detection Methods for Variable Frequency Three-Phase Sinusoidal Signals
3.1 Introuction
3.2 Three-Phase Sinusoidal AC Rejection Detector
3.3 Analysis and Experiment of Effects of Nonideal Waveforms
3.4 Three-Phase Indirect Orthogonal Detertor
3.5 Analysis and Experiment of Effectos on Nonideal Waveforms
4 Control and Implementation of the Proposed AC to DC Converter
4.1 Introduction
4.2 System Description and the Dynamic Model of Power Converter
4.3 Design of the Feed-Forward and the Feedback Controller
4.4 Implementation of the Feed-Forward and the Feedback Controller
4.5 Simulation and Experimental Results
5 Application of the Proposed Converter to a PWM Solid-State Synchronous Condenser
5.1 Introduction
5.2 Principle of Operation
5.3 System Implementation
5.4 Operation Range Estimation of the Proposed Synchronous Chondenser
5.5 Simulation and Experimental Results
6 Application of the Proposed Converter to an Active Power Filter
6.1 Introduction
6.2 Principle of Operation
6.3 Design of the Proposed Active Power Filter
6.4 Simulation Results
6.5 Experimental Results
7 Conclusions
APPENDIX
PUBLICATION LIST