本文旨在開發一同步磁阻發電機系統及從事其增能控制研究。首先，在探究同步磁阻電機之關鍵事務後，建構一標準同步磁阻發電機系統，以變頻器供電永磁同步馬達為其原動機。以所提損失最小化技巧決定合宜之換相時刻，獲得較佳發電性能，同時電流切換控制考慮了電機固有之槽齒效應。再藉所提電壓強健控制，使其具良好之電壓響應。此外，進一步構建無位置感測同步磁阻發電機，含弦波與方波高頻注入機構，以及延伸型反電動勢估測機構。同時亦從事無位置感測與標準同步磁阻發電機之性能及轉換效率比較評估。
接著，本文從事所開發同步磁阻發電機之獨立與聯網操控。由於三相六開關切換式整流器之雙向功率能力，所建同步磁阻發電機可直接回送電力至市電，從事雙向送能操控。此外，此切換式整流器亦可形成一三相三線變頻器供電給家庭負載。藉由適當設計之控制器，在非線性負載下，仍具有良好之電壓波形及動態響應特性。
最後，藉由單臂雙向直流至直流介面轉換器，蓄電池可於直流鏈對同步磁阻發電機提供能源支撐。反之，同步磁阻發電機或市電亦可對蓄電池回充。此外，可收集之直流電源，如燃料電池及光伏，亦可插入所建同步磁阻發電機系統，提供能源支撐。所建之同步磁阻發電機系統均以實測結果佐證。

This thesis is mainly concerned with the development of a synchronous reluctance generator (SynRG) and performing its performance enhancement control studies. First, having comprehended the key issues for synchronous reluctance machine, the studied synchronous reluctance generator system is established. An inverter-fed permanent-magnet synchronous motor is employed as its prime mover. The adequate commutation is set by the developed loss minimization controller (LMC), and the winding current switching control is conducted considering the inherent slotting effects. Finally, the robust voltage control scheme is proposed to yield good generated voltage response. In addition, the position sensorless controlled SynRG is further established. The established sensorless control schemes include the sine-wave high frequency injected (HFI) scheme, the square-wave HFI scheme and also the extended back electromotive force (EMF) scheme. And the comparative performance evaluation between the sensorless SynRG and the standard SynRG is made experimentally.
Next, the autonomous and grid-connected operations of the established SynRG are made. Thanks to the bidirectional power capability possessed by the three-phase six-switch (3P6SW) switch-mode rectifier (SMR), the developed SynRG can be directly connected to the utility grid for bidirectional power transfer operations. In addition, the 3P6SW SMR can be operated as a three-phase three-wire (3P3W) load inverter to power the household loads. Through proper control, good voltage waveforms and regulation dynamic response under nonlinear loads are preserved.
Finally, the established SynRG can be supported energy at its DC-link from the battery via a well-designed one-leg bidirectional DC/DC converter. The battery can be charged by the SynRG or the mains successfully. Moreover, the possible harvested DC sources, such as fuel cell and photovoltaic, can be plugged into the SynRG system for providing energy support.

ABSTRACT i
ACKNOWLEDGEMENTS ii
LIST OF CONTENTS iii
LIST OF FIGURES v
LIST OF TABLES xvii
LIST OF SYMBOLS xix
LIST OF ABBREVIATIONS xxvii
CHAPTER 1 INTRODUCTION 1
CHAPTER 2 INTRODUCTION TO SYNCHRONOUS RELUCTANCE GENERATOR AND SOME MICROGRID RELATED POWER ELECTRONIC TECHNOLOGIES 6
2.1 Introduction 6
2.2 Micro-grid System 6
2.3 Structures of Synchronous Machines 10
2.4 Synchronous Reluctance Machine 12
2.5 Interface Converters 21
CHAPTER 3 PERMANENT-MAGNET SYNCHRONOUS MOTOR DRIVEN PRIME MOVER 29
3.1 Introduction 29
3.2 Governing Equations of PMSM 29
3.3 Measurement of Motor Parameters 32
3.4 Some Key Issues of PMSM Drive 35
3.5 Development of a DSP-based Standard PMSM Drive 36
3.6 Controller Scheme 41
3.7 Experimental Evaluation for the Established SPMSM Drive 45
CHAPTER 4 DEVELOPMENT OF A STANDARD SYNCHRONOUS- RELUCTANCE GENERATOR 49
4.1 Introduction 49
4.2 Establishment of Wind Synchronous Reluctance Generator 49
4.3 Practical Modeling of SynRG 55
4.4 Control Schemes 58
4.5 Experimental Evaluation for the Established Standard SynRG 68
CHAPTER 5 POSITION SENSORLESS CONTROL OF SYNCHRONOUS RELUCTANCE GENERATOR 81
5.1 Introduction 81
5.2 Some Existing Position Sensorless Control Methods 81
5.3 Sinusoidal Wave HFI Position Sensorless SynRG 82
5.4 Square Wave HFI Position Sensorless SynRG 90
5.5 Extended-EMF Position Sensorless SynRG 95
5.6 Comparative Evaluation of the Developed High-frequency Injection and Extend-EMF Observer based Sensorless Control SynRGs 100
CHAPTER 6 SYNCHRONOUS-RELUCTANCE GENERATOR BASED MICROGRID AND ITS GRID-CONNECTED OPERATIONS 119
6.1 Introduction 119
6.2 System Configuration 119
6.3 Battery Energy Storage System 119
6.4 Grid-Connected Bidirectional Inverter 132
6.5 Dump Load 145
6.6 Performance Assessment of Whole System 146
CHAPTER 7 CONCLUSIONS 165
REFERENCE 167

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