Covers the fundamental concepts and advanced modelling techniques of Doubly Fed Induction Generators accompanied by analyses and simulation results Filled with illustrations, problems, models, analyses, case studies, selected simulation and experimental results, Advanced Control of Doubly Fed Induction Generator for Wind Power Systems provides the basic concepts for modelling and controlling of Doubly Fed Induction Generator (DFIG) wind power systems and their power converters. It explores both the challenges and concerns of DFIG under a non-ideal grid and introduces the control strategies and…mehr
Covers the fundamental concepts and advanced modelling techniques of Doubly Fed Induction Generators accompanied by analyses and simulation results Filled with illustrations, problems, models, analyses, case studies, selected simulation and experimental results, Advanced Control of Doubly Fed Induction Generator for Wind Power Systems provides the basic concepts for modelling and controlling of Doubly Fed Induction Generator (DFIG) wind power systems and their power converters. It explores both the challenges and concerns of DFIG under a non-ideal grid and introduces the control strategies and effective operations performance options of DFIG under a non-ideal grid. Other topics of this book include thermal analysis of DFIG wind power converters under grid faults; implications of the DFIG test bench; advanced control of DFIG under harmonic distorted grid voltage, including multiple-loop and resonant control; modeling of DFIG and GSC under unbalanced grid voltage; the LFRT of DFIG, including the recurring faults ride through of DFIG; and more. In addition, this resource: * Explores the challenges and concerns of Doubly Fed Induction Generators (DFIG) under non-ideal grid * Discusses basic concepts of DFIG wind power system and vector control schemes of DFIG * Introduces control strategies under a non-ideal grid * Includes case studies and simulation and experimental results Advanced Control of Doubly Fed Induction Generator for Wind Power Systems is an ideal book for graduate students studying renewable energy and power electronics as well as for research and development engineers working with wind power converters.Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
DEHONG XU, PHD, is a Professor in the College of Electrical Engineering of Zhejiang University, China, where he teaches modelling and control of power electronics and renewable systems. FREDE BLAABJERG, PHD, is a Professor in Power Electronics and Villum Investigator at the Department of Energy Technology, Aalborg University, Denmark, as well as a Visiting Professor at Zhejiang University, China. WENJIE CHEN received a PhD from the College of Electrical Engineering of Zhejiang University. Now he is a senior engineer in Powertrain Solution Division, BOSCH. NAN ZHU received a PhD from the College of Electrical Engineering of Zhejiang University. Now he is a senior engineer in the renewable energy division of Huawei.
Inhaltsangabe
PREFACE xiii NOMENCLATURE xv PART I INTRODUCTION TO WIND POWER GENERATION CHAPTER 1 INTRODUCTION 3 1.1 Global Wind Power Development 3 1.2 Evolution of Wind Power System 5 1.3 Power Electronics in Wind Turbine Systems 9 1.4 Challenges and Trends in Future Wind Power Technology 11 1.5 The Topics of This Book 18 CHAPTER 2 BASICS OF WIND POWER GENERATION SYSTEM 21 2.1 Introduction 21 2.2 Wind Power Concept 21 2.3 Variable-Speed Wind Turbine 26 2.4 Control of Power Converter 31 2.5 Wind Power Transmission 34 2.6 Summary 41 CHAPTER 3 GRID CODES FOR WIND POWER GENERATION SYSTEMS 43 3.1 Introduction 43 3.2 Grid Code Requirements Under Normal Operation 44 3.3 Grid Code Requirements Under Non-Ideal Grid 51 3.4 Grid Codes for Distributed Wind Power Generation 58 3.5 Summary 62 PART II MODELING AND CONTROL OF DFIG CHAPTER 4 MODELING OF DFIG WIND POWER SYSTEMS 67 4.1 Introduction 67 4.2 Steady-State Equivalent Circuit of a DFIG 67 4.3 Dynamic Model of a DFIG 74 4.4 Modeling of the Converter 85 4.5 Summary 95 CHAPTER 5 CONTROL OF DFIG POWER CONVERTERS 99 5.1 Introduction 99 5.2 Start-Up Process of the DFIG System 99 5.3 Grid-Side Converter 101 5.4 Rotor-Side Converter in Power-Control Mode 114 5.5 Rotor-Side Converter in Speed-Control Mode 124 5.6 Rotor-Side Converter in Starting Mode 128 5.7 Control-Mode Switching 135 5.8 Summary 136 PART III OPERATION OF DFIG UNDER DISTORTED GRID VOLTAGE CHAPTER 6 ANALYSIS OF DFIG UNDER DISTORTED GRID VOLTAGE 141 6.1 Introduction 141 6.2 Influence on GSC 142 6.3 Influence on DFIG and RSC 149 6.4 Discussion on Different Controller Parameters 162 6.5 Discussion on Different Power Scales 163 6.6 Summary 164 CHAPTER 7 MULTIPLE-LOOP CONTROL OF DFIG UNDER DISTORTED GRID VOLTAGE 167 7.1 Introduction 167 7.2 GSC Control 168 7.3 DFIG and RSC Control 176 7.4 Influence on the Fundamental Current Loop 188 7.5 Summary 191 CHAPTER 8 RESONANT CONTROL OF DFIG UNDER GRID VOLTAGE HARMONICS DISTORTION 195 8.1 Introduction 195 8.2 Resonant Controller 195 8.3 Stator Current Control Using Resonant Controllers 197 8.4 Influence on Normal Control Loop 215 8.5 Design and Optimization of Current Controller 222 8.6 Summary 233 CHAPTER 9 DFIG UNDER UNBALANCED GRID VOLTAGE 237 9.1 Introduction 237 9.2 RSC and DFIG Under Unbalanced Grid Voltage 237 9.3 GSC Under Unbalanced Grid Voltage 244 9.4 Control Limitations Under Unbalanced Grid Voltage 248 9.5 Summary 256 CHAPTER 10 CONTROL OF DFIG WIND POWER SYSTEM UNDER UNBALANCED GRID VOLTAGE 259 10.1 Introduction 259 10.2 Control Targets 259 10.3 Stator Current Control with Resonant Controller 260 10.4 DC Voltage Fluctuation Control by GSC 266 10.5 Summary 293 PART IV GRID FAULT RIDE-THROUGH OF DFIG CHAPTER 11 DYNAMIC MODEL OF DFIG UNDER GRID FAULTS 299 11.1 Introduction 299 11.2 Behavior During Voltage Dips 300 11.3 DFIG Behavior During Voltage Recovery 315 11.4 Under Recurring Grid Faults 320 11.5 Summary 339 CONTENTS xi CHAPTER 12 GRID FAULT RIDE-THROUGH OF DFIG 341 12.1 Introduction 341 12.2 PLL Under Grid Faults 342 12.3 FRT Strategies for DFIG Based on Improved Control 348 12.4 FRT Strategies Based on Hardware Solutions 362 12.5 Recurring Fault Ride Through 369 12.6 Summary 384 CHAPTER 13 THERMAL CONTROL OF POWER CONVERTER IN NORMAL AND ABNORMAL OPERATIONS 387 13.1 Loss Model of Power Converter 387 13.2 Thermal Model of Power Converter 392 13.3 Thermal Loading During Normal Operation 397 13.4 Thermal Loading in Abnormal Operation 401 13.5 Smart Thermal Control by Reactive Power Circulation 408 13.6 Summary 412 PART V DFIG TEST BENCH CHAPTER 14 DFIG TEST BENCH 417 14.1 Introduction 417 14.2 Scheme of the DFIG Test Bench 417 14.3 The Caged Motor and its Driving Inverter 419 14.4 DFIG Test System 420 14.5 Rotor-Side Crowbar 429 14.6 Grid Emulator 431 14.7 Communications and Up-Level Control 439 14.8 Start-Up and Protection of the System 441 14.9 Summary 448 APPENDIX 449 A.1 Flux Equations in ¿ ß Reference Frame 449 A.2 Typical Parameters of a DFIG 451 INDEX 453
PREFACE xiii NOMENCLATURE xv PART I INTRODUCTION TO WIND POWER GENERATION CHAPTER 1 INTRODUCTION 3 1.1 Global Wind Power Development 3 1.2 Evolution of Wind Power System 5 1.3 Power Electronics in Wind Turbine Systems 9 1.4 Challenges and Trends in Future Wind Power Technology 11 1.5 The Topics of This Book 18 CHAPTER 2 BASICS OF WIND POWER GENERATION SYSTEM 21 2.1 Introduction 21 2.2 Wind Power Concept 21 2.3 Variable-Speed Wind Turbine 26 2.4 Control of Power Converter 31 2.5 Wind Power Transmission 34 2.6 Summary 41 CHAPTER 3 GRID CODES FOR WIND POWER GENERATION SYSTEMS 43 3.1 Introduction 43 3.2 Grid Code Requirements Under Normal Operation 44 3.3 Grid Code Requirements Under Non-Ideal Grid 51 3.4 Grid Codes for Distributed Wind Power Generation 58 3.5 Summary 62 PART II MODELING AND CONTROL OF DFIG CHAPTER 4 MODELING OF DFIG WIND POWER SYSTEMS 67 4.1 Introduction 67 4.2 Steady-State Equivalent Circuit of a DFIG 67 4.3 Dynamic Model of a DFIG 74 4.4 Modeling of the Converter 85 4.5 Summary 95 CHAPTER 5 CONTROL OF DFIG POWER CONVERTERS 99 5.1 Introduction 99 5.2 Start-Up Process of the DFIG System 99 5.3 Grid-Side Converter 101 5.4 Rotor-Side Converter in Power-Control Mode 114 5.5 Rotor-Side Converter in Speed-Control Mode 124 5.6 Rotor-Side Converter in Starting Mode 128 5.7 Control-Mode Switching 135 5.8 Summary 136 PART III OPERATION OF DFIG UNDER DISTORTED GRID VOLTAGE CHAPTER 6 ANALYSIS OF DFIG UNDER DISTORTED GRID VOLTAGE 141 6.1 Introduction 141 6.2 Influence on GSC 142 6.3 Influence on DFIG and RSC 149 6.4 Discussion on Different Controller Parameters 162 6.5 Discussion on Different Power Scales 163 6.6 Summary 164 CHAPTER 7 MULTIPLE-LOOP CONTROL OF DFIG UNDER DISTORTED GRID VOLTAGE 167 7.1 Introduction 167 7.2 GSC Control 168 7.3 DFIG and RSC Control 176 7.4 Influence on the Fundamental Current Loop 188 7.5 Summary 191 CHAPTER 8 RESONANT CONTROL OF DFIG UNDER GRID VOLTAGE HARMONICS DISTORTION 195 8.1 Introduction 195 8.2 Resonant Controller 195 8.3 Stator Current Control Using Resonant Controllers 197 8.4 Influence on Normal Control Loop 215 8.5 Design and Optimization of Current Controller 222 8.6 Summary 233 CHAPTER 9 DFIG UNDER UNBALANCED GRID VOLTAGE 237 9.1 Introduction 237 9.2 RSC and DFIG Under Unbalanced Grid Voltage 237 9.3 GSC Under Unbalanced Grid Voltage 244 9.4 Control Limitations Under Unbalanced Grid Voltage 248 9.5 Summary 256 CHAPTER 10 CONTROL OF DFIG WIND POWER SYSTEM UNDER UNBALANCED GRID VOLTAGE 259 10.1 Introduction 259 10.2 Control Targets 259 10.3 Stator Current Control with Resonant Controller 260 10.4 DC Voltage Fluctuation Control by GSC 266 10.5 Summary 293 PART IV GRID FAULT RIDE-THROUGH OF DFIG CHAPTER 11 DYNAMIC MODEL OF DFIG UNDER GRID FAULTS 299 11.1 Introduction 299 11.2 Behavior During Voltage Dips 300 11.3 DFIG Behavior During Voltage Recovery 315 11.4 Under Recurring Grid Faults 320 11.5 Summary 339 CONTENTS xi CHAPTER 12 GRID FAULT RIDE-THROUGH OF DFIG 341 12.1 Introduction 341 12.2 PLL Under Grid Faults 342 12.3 FRT Strategies for DFIG Based on Improved Control 348 12.4 FRT Strategies Based on Hardware Solutions 362 12.5 Recurring Fault Ride Through 369 12.6 Summary 384 CHAPTER 13 THERMAL CONTROL OF POWER CONVERTER IN NORMAL AND ABNORMAL OPERATIONS 387 13.1 Loss Model of Power Converter 387 13.2 Thermal Model of Power Converter 392 13.3 Thermal Loading During Normal Operation 397 13.4 Thermal Loading in Abnormal Operation 401 13.5 Smart Thermal Control by Reactive Power Circulation 408 13.6 Summary 412 PART V DFIG TEST BENCH CHAPTER 14 DFIG TEST BENCH 417 14.1 Introduction 417 14.2 Scheme of the DFIG Test Bench 417 14.3 The Caged Motor and its Driving Inverter 419 14.4 DFIG Test System 420 14.5 Rotor-Side Crowbar 429 14.6 Grid Emulator 431 14.7 Communications and Up-Level Control 439 14.8 Start-Up and Protection of the System 441 14.9 Summary 448 APPENDIX 449 A.1 Flux Equations in ¿ ß Reference Frame 449 A.2 Typical Parameters of a DFIG 451 INDEX 453
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