Power Electronic Converters

Ein Referenzwerk mit Erläuterungen zum Verhalten von elektronischen Leistungswandlern fehlte bislang. Dieses Fachbuch bietet Informationen, die in vergleichbaren Publikationen zur Leistungselektronik nicht enthalten sind. In einer übersichtlichen Struktur werden in vier Abschnitten die folgenden Themen behandelt. Der erste Abschnitt beschäftigt sich mit der Dynamik und Steuerung herkömmlicher Leistungswandler. Dynamik und Steuerung von Gleichspannungswandlern in Anwendungen mit erneuerbaren Energien sind Gegenstand des zweiten Abschnitts, der auch eine Einführung in die Quellen und das Design von stromgespeisten Leistungswandlern nach dem Prinzip der Dualitätstransformation. Der dritte Abschnitt beschreibt die Dynamik und Steuerung von dreiphasigen Gleichrichtern in spannungsgespeisten Anwendungen. Im letzten Abschnitt geht es um die Dynamik und Steuerung von dreiphasigen VS-Umrichtern bei Anwendungen mit erneuerbaren Energien. Dieses zukunftsorientierte Fachbuch mit fundierten Informationen aus erster Hand ist das Referenzwerk der Wahl für Forscher und Ingenieure, die ein zugängliches Nachschlagewerk zu Design und Steuerung von elektronischen Leistungswandlern benötigen.

Autorentext

Teuvo Suntio is Professor in Power Electronics at Tampere University of Technology, Finland. He has been also Adjunct Professor in Control Engineering at the Aalto University (TKK) in 2001-2011, and in Power Electronics at the University of Oulu since 2004. He has also served 20 years in power electronics industry as a design engineer and an R&D manager prior to starting the academic career in 1998. He has authored or co-authored over 200 international conference and journal articles, supervised close to 100 MSc students as well as 18 PhD students during the nineteen years in academy.

Tuomas Messo is Assistant Professor in Power Electronics at Tampere University of Technology, Finland. His current research aims to identify the source of harmonic resonance problems reported in grid-connected power electronic systems through dynamic modeling and mitigating the problems by shaping the inverter impedance. His teaching activities include basic power electronic courses and advanced courses, which concentrate on DC-DC converter design and dynamic analysis of three-phase DC-AC converters.

Joonas Puukko is with ABB Oy High Power Drives in Helsinki, Finland. Previously he was with ABB Oy Solar Inverters and ABB Inc. United States Corporate Research. He obtained his PhD from Tampere University of Technology, Finland, for a work on dynamics of grid-connected three-phase converters. He has expertise in hardware and control system design in various power electronics applications ranging from few tens of watts to hundreds of kilowatts.

Zusammenfassung

Filling the need for a reference that explains the behavior of power electronic converters, this book provides information currently unavailable in similar texts on power electronics.

Clearly organized into four parts, the first treats the dynamics and control of conventional converters, while the second part covers the dynamics and control of DC-DC converters in renewable energy applications, including an introduction to the sources as well as the design of current-fed converters applying duality-transformation methods. The third part treats the dynamics and control of three-phase rectifiers in voltage-sourced applications, and the final part looks at the dynamics and control of three-phase inverters in renewable-energy applications.

With its future-oriented perspective and advanced, first-hand knowledge, this is a prime resource for researchers and practicing engineers needing a ready reference on the design and control of power electronic converters.

Inhalt

Preface xiii

About the Authors xv

Part One Introduction 1

1 Introduction 3

1.1 Introduction 3

1.2 Implementation of Current-Fed Converters 6

1.3 Dynamic Modeling of Power Electronic Converters 7

1.4 Linear Equivalent Circuits 8

1.5 Impedance-Based Stability Assessment 12

1.6 Time Domain-Based Dynamic Analysis 14

1.7 Renewable Energy System Principles 17

1.8 Content Review 19

References 20

2 Dynamic Analysis and Control Design Preliminaries 27

2.1 Introduction 27

2.2 Generalized Dynamic Representations DCDC 27

2.2.1 Introduction 27

2.2.2 Generalized Dynamic Representations 29

2.2.3 Generalized Closed-Loop Dynamics 30

2.2.4 Generalized Cascaded Control Schemes 33

2.2.5 Generalized Source and Load Interactions 38

2.2.6 Generalized Impedance-Based Stability Assessment 40

2.3 Generalized Dynamic Representations: DCAC, ACDC, and ACAC 42

2.3.1 Introduction 42

2.3.2 Generalized Dynamic Representations 44

2.3.3 Generalized Closed-Loop Dynamics 48

2.3.4 Generalized Cascaded Control Schemes 50

2.3.5 Generalized Source and Load Interactions 54

2.3.6 Generalized Impedance-Based Stability Assessment 56

2.4 Small-Signal Modeling 57

2.4.1 Introduction 57

2.4.2 Average Modeling and Linearization 60

2.4.3 Modeling Coupled-Inductor Converters 64

2.4.4 Modeling in Synchronous Reference Frame 66

2.5 Control Design Preliminaries 77

2.5.1 Introduction 77

2.5.2 Transfer Functions 77

2.5.3 Stability 84

2.5.4 Transient Performance 95

2.5.5 Feedback-Loop Design Constraints 100

2.5.6 Controller Implementations 103

2.5.7 Optocoupler Isolation 108

2.5.8 Application of Digital Control 109

2.6 Resonant LC-Type Circuits 110

2.6.1 Introduction 110

2.6.2 Single-Section LC Filter 112

2.6.3 LCL Filter 113

2.6.4 CLCL Filter 115

References 117

Part Two Voltage-Fed DCDC Converters 123

3 Dynamic Modeling of Direct-on-Time Control 125

3.1 Introduction 125

3.2 Direct-on-Time Control 127

3.3 Generalized Modeling Technique 129

3.3.1 Buck Converter 131

3.3.2 Boost Converter 134

3.3.3 BuckBoost Converter 136

3.3.4 Superbuck Converter 140

3.4 Fixed-Frequency Operation in CCM 142

3.4.1 Buck Converter 143

3.4.2 Boost Converter 146

3.4.3 BuckBoost Converter 149

3.4.4 Superbuck Converter 153

3.4.5 Coupled-Inductor Superbuck Converter 157

3.5 Fixed-Frequency Operation in DCM 163

3.5.1 Buck Converter 164

3.5.2 Boost Converter 167

3.5.3 BuckBoost Converter 170

3.6 Source and Load Interactions 173

3.6.1 Source Interactions 173

3.6.2 Input Voltage Feedforward 174

3.6.3 Load Interactions 176

3.6.4 Output-Current Feedforward 177

3.7 Impedance-Based Stability Issues 179

3.8 Dynamic Review 181

References 186

4 Dynamic Modeling of Current-Mode Control 189

4.1 Introduction 189

4.2 Peak Current Mode Control 190

4.2.1 PCM Control Principles 190

4.2.2 Development of Duty-Ratio Constraints in CCM 192

4.2.3 Development of Duty-Ratio Constraints in DCM 195

4.2.4 Origin and Consequences of Mode Limits in CCM and DCM 196

4.2.5 Duty-Ratio Constraints in CCM 201

4.2.5.1 Buck Converter 201

4.2.5.2 Boost Converter 201

4.2.5.3 BuckBoost Converter 202

4.2.5.4 Superbuck Converter 204

4.2.5.5 Coupled-Inductor Superbuck Converter 205 4.2.6 Duty-Ratio Const...