DC Wind Generation Systems (eBook)
IX, 188 Seiten
Springer International Publishing (Verlag)
978-3-030-39346-5 (ISBN)
This book presents the design and operation of DC wind systems and their integration into power grids. The chapters give an in-depth discussion on turbine conversion systems that have been adapted for DC grids and address characteristics of wind turbines when converting kinetic wind energy to electrical energy, components associated with DC systems, and the design and analysis of DC grids. Additionally, the performance of medium voltage DC (MVDC) array grid and high voltage DC (HVDC) transmission grid connected via an offshore substation with DC/DC converters are also addressed. The book examines multiphase hybrid excitation generator systems for wind turbines and discusses its design and operation for all DC systems. The book provides an insight into the state-of-the-art technological advancements for existing and futuristic wind generation schemes, and provides materials that will allow students, researchers, academics, and practicing engineers to learn, expand and complement their expertise.
Omid Beik received the B.Sc. degree (Hons. with highest distinction) in electrical engineering from Yazd University, Yazd, Iran, in 2007, the M.Sc. degree (with highest distinction) in electrical engineering from Shahid Beheshti University, Abbaspour School of Engineering, Tehran, Iran, in 2009, and the Ph.D. degree in electrical engineering from McMaster University, Hamilton, ON, Canada, in 2016. He was a Postgraduate Researcher with the Power Conversion Group, University of Manchester, U.K. from 2011 to 2012, and a Postdoctoral Research Fellow with McMaster University, Hamilton, ON, Canada from 2016 to 2017. His main research interests include electric machines, and drives and power electronics for applications in renewable energy systems and transportation electrification.
Ahmad Saad Al-Adsani received the B.S. (Hons.) degree in electrical power engineering from Gannon University, Erie, PA, USA, in 1996, the M.S. degree in electrical power engineering from the South Dakota School of Mines and Technology, Rapid City, SD, USA, in 2001, and the Ph.D. degree from the University of Manchester, Manchester, U.K., in 2011. From 1997 to 1999, he was an Instructor with Public Authority for Applied Education and Training (PAAET), Kuwait City, Kuwait, before joining the Electrical Engineering Department, as an Assistant Lecturer, with the College of Technological Studies (CST) from 2001 to 2007. He was also the Head of the Electrical Unit, College of Basic Education, PAAET from 2003 to 2007. He is currently an Assistant Professor with the CST, PAAET. His research interests include electro-magnetic powertrains for electric and hybrid-electric vehicles, design and control of multiphase electric and hybrid electric machines for renewable energy applications.
Preface 5
Contents 7
Chapter 1: Wind Energy Systems 10
1.1 Introduction 10
1.2 Developments in the Wind Generation Systems 12
Chapter 2: Wind Turbine Systems 19
2.1 Introduction 19
2.2 Wind Turbine Power and the Betz Limit 19
2.3 Wind Turbine Power Coefficient 24
2.3.1 Tip Speed Ratio 24
2.3.2 Mathematical Expression for Wind Turbine Power Coefficient 26
2.4 Wind Turbine Operation 28
2.4.1 Limited Speed Operation 32
2.4.2 High Speed Operation 37
Chapter 3: DC Wind Generation System 40
3.1 Overview of the Walney Offshore Wind Farm 40
3.2 Walney System Component Model 43
3.2.1 Induction Generator (IG) Model 44
3.2.2 VSC Model 45
3.2.3 Transformer Model 46
3.2.4 AC Cables Model 46
3.2.5 DC-Link Model 47
3.3 Walney System Analysis at Different Loads 49
3.3.1 Full-Load Results 50
3.3.2 Results for Three-Quarter, Half-, and One-Quarter Loads 53
3.4 DC Offshore Wind Generation System 57
3.4.1 Hybrid Generator (HG) 59
3.4.2 Gearbox 61
3.4.3 Voltage Control Scenarios 61
3.4.4 DC/DC Converter 63
3.4.5 Turbine Safety Considerations 64
3.5 DC System Analysis 64
3.5.1 DC Cable Calculations 66
3.5.2 Results for Full-, Three-Quarter, Half-, and One-Quarter Loads 68
3.6 Comparison Between DC System and Walney Wind Farm 74
3.7 Summary 75
Chapter 4: Hybrid Generator (HG) Concept 77
4.1 Electric Machines and Converters for Wind Turbines 77
4.1.1 Doubly Fed Induction Generators (DFIGs) 77
4.1.2 VSC-Coupled Induction, Synchronous, and PM Generators 77
4.1.3 Comparison of Generators 81
4.2 Hybrid Generator (HG) Concept 82
4.3 High-Voltage, Three-Phase Benchmark Synchronous Generator (SG) 83
4.3.1 General Details 83
4.3.2 Winding Arrangement 86
4.3.3 Magnetic Field Distribution and Flux-Density 88
4.3.4 Flux-Linkage and Back-EMF 91
4.3.5 Torque Calculations 94
4.3.6 Inductances 96
4.3.7 Modeling of Benchmark SG 100
4.4 Summary 103
Chapter 5: Multiphase Machine Design 104
5.1 Introduction 104
5.2 HG Design Philosophies 104
5.2.1 HG Design Philosophy for Limited Speed Region 105
5.3 Design of Three-Phase HG with 100% Wound Field (WF) 107
5.3.1 Generator Connected to a Passive Rectifier 107
5.3.2 Generator Connected to a VSC 109
5.4 Design of 9-Phase HG with 100% Wound Field (WF) 116
5.4.1 Comparison of 3-Phase and 9-Phase Machines 121
5.4.2 Generator Connected to a Passive Rectifier 123
5.5 Design of HG PM Rotor with NdFeB Surface Magnets 126
5.5.1 Sintered NdFeB Characteristics 128
5.5.2 Flux-Linkage, Back-EMF, and Torque 133
5.5.3 Inductances 135
5.6 Design of HG PM Rotor with Ferrite-Embedded Magnets 137
5.7 Design of HG PM Rotor with NdFeB-Embedded Magnets 141
5.7.1 Flux-Linkage, Back-EMF, and Torque 143
5.7.2 Inductances 147
5.8 Final HG Considerations 148
5.8.1 WF and PM Split Ratio 150
5.8.2 HG Loss Audit 153
5.9 Summary 158
Chapter 6: High Voltage Insulation Systems 160
6.1 Introduction 160
6.2 Analysis of the HV System Employing a 6.35 kV HG 161
6.3 HV Winding Types 163
6.4 Insulation Systems 165
6.4.1 Strand, Turn, and Groundwall Insulation 167
6.4.2 Semiconductive Slot and Voltage Stress Grading Insulation 172
6.4.3 Transposition 174
6.5 HG Insulation 175
6.6 Summary 180
References 182
References for Further Studies 186
Index 189
| Erscheint lt. Verlag | 4.3.2020 |
|---|---|
| Zusatzinfo | IX, 188 p. 150 illus., 92 illus. in color. |
| Sprache | englisch |
| Themenwelt | Technik ► Elektrotechnik / Energietechnik |
| Technik ► Maschinenbau | |
| Schlagworte | Electric Machines • Electric Power Generation • Energy systems • Hybrid generators • Insulation systems • Magnetic field distribution • modelling and control • Off-shore wind farms • renewable energy • Turbine power |
| ISBN-10 | 3-030-39346-1 / 3030393461 |
| ISBN-13 | 978-3-030-39346-5 / 9783030393465 |
| Haben Sie eine Frage zum Produkt? |
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