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Origin of Power Converters
Decoding, Synthesizing, and Modeling
Tsai-Fu Wu (Author), Yu-Kai Chen (Author)
9781119632986, Wiley
Hardback, published 17 April 2020
416 pages
1 x 1 x 1 cm, 0.454 kg
A comprehensive guide to approaches to decoding, synthesizing and modeling pulse width modulation (PWM) converters Origin of Power Converters explores the original converter and provides a systematic examination of the development and modeling of power converters based on decoding and synthesizing approaches. The authors—noted experts on the topic—present an introduction to the origins of the converter and detail the fundamentals related to power the converter’s evolution. They cover a range of converter synthesis approaches, synthesis of multi-stage/multi-level converters, extension of hard-switching converters to soft-switching ones, and determination of switch-voltage stresses in the converters. In later chapters, this comprehensive resource reviews conventional two-port network theory and the state-space averaged (SSA) modeling approach, from which systematic modeling approaches are based on the graft switch technique. In addition, the book reviews the converter layer scheme and some fundamental circuit theories. This important book: • Contains a review of several typical transfer codes, such as step-down, step-up, step-up&-down, and ± step-up&-down • Describes the syntheses of pulse width modulation (PWM) converters such as voltage-fed z-source, current-fed z-source, quasi z-source, switched capacitor, and switched inductor converters • Presents two application examples based on previously proposed modeling approaches Written for academic researchers, graduate students, and seniors in power electronics, Origin of Power Converters provides a comprehensive understanding of the evolution of the converter and its applications.
Preface xv Acknowledgments xvii About the Authors xviii Part I Decoding and Synthesizing 1 1 Introduction 3 1.1 Power Processing Systems 4 1.2 Non-PWM Converters Versus PWM Converters 7 1.4 Approaches to Converter Development 17 1.5 Evolution 25 1.6 About the Text 26 Further Reading 28 2 Discovery of Original Converter 31 2.1 Creation of Original Converter 31 2.2 Fundamental PWM Converters 34 2.3 Duality 40 Further Reading 41 3 Fundamentals 43 3.1 DC Voltage and Current Offsetting 43 3.2 Capacitor and Inductor Splitting 49 3.3 DC-Voltage Blocking and Pulsating-Voltage Filtering 51 3.4 Magnetic Coupling 55 3.5 DC Transformer 58 3.6 Switch Grafting 62 3.7 Diode Grafting 67 3.8 Layer Scheme 72 Further Reading 74 4 Decoding Process 77 4.1 Transfer Ratios (Codes) 77 4.2 Transfer Code Configurations 82 4.3 Decoding Approaches 86 4.4 Decoding of Transfer Codes with Multivariables 91 4.5 Decoding with Component-Interconnected Expression 93 Further Reading 94 5 Synthesizing Process with Graft Scheme 95 5.1 Cell Approaches 95 5.2 Converter Grafting Scheme 101 5.3 Illustration of Grafting Converters 110 Further Reading 132 6 Synthesizing Process with Layer Scheme 133 6.1 Converter Layering Scheme 133 6.2 Illustration of Layering Converters 135 6.3 Discussion 146 Further Reading 151 7 Converter Derivation with the Fundamentals 153 7.1 Derivation of Buck Converter 153 7.2 Derivation of z-Source Converters 154 7.3 Derivation of Converters with Switched Inductor or Switched Capacitor 166 7.4 Syntheses of Desired Transfer Codes 185 Further Reading 198 8 Synthesis of Multistage and Multilevel Converters 199 8.1 Review of the Original Converter and Its Variations of Transfer Code 199 8.2 Syntheses of Single-Phase Converters 201 8.3 Syntheses of Three-Phase Converters 203 8.4 Syntheses of Multilevel Converters 207 8.5 L–C Networks 210 Further Reading 212 9 Synthesis of Soft-Switching PWM Converters 215 9.1 Soft-Switching Cells 215 9.2 Synthesis of Soft-Switching PWM Converters with Graft Scheme 230 9.3 Synthesis of Soft-Switching PWM Converters with Layer Scheme 240 9.4 Discussion 247 Further Reading 251 10 Determination of Switch-Voltage Stresses 255 10.1 Switch-Voltage Stress of the Original Converter 255 10.2 Switch-Voltage Stresses of the Fundamental Converters 257 10.3 Switch-Voltage Stresses of Non-Fundamental Converters 263 Further Reading 270 11 Discussion and Conclusion 271 11.1 Will Identical Transfer Code Yield the Same Converter Topology? 271 11.2 Topological Duality Versus Circuital Duality 274 11.3 Graft and Layer Schemes for Synthesizing New Fundamental Converters 277 11.4 Analogy of Power Converters to DNA 289 11.5 Conclusions 295 Further Reading 296 Part II Modeling and Application 299 12 Modeling of PWM DC/DC Converters 301 12.1 Generic Modeling of the Original Converter 302 12.2 Series-Shunt and Shunt-Series Pairs 303 12.3 Two-Port Network 308 12.4 Small-Signal Modeling of the Converters Based on Layer Scheme 315 12.5 Quasi-Resonant Converters 323 Further Reading 326 13 Modeling of PWM DC/DC Converters Using the Graft Scheme 329 13.1 Cascade Family 330 13.2 Small-Signal Models of Buck-Boost and Æuk Converters Operated in CCM 332 13.3 Small-Signal Models of Zeta and Sepic Operated in CCM 340 Further Reading 349 14 Modeling of Isolated Single-Stage Converters with High Power Factor and Fast Regulation 351 14.1 Generation of Single-Stage Converters with High Power Factor and Fast Regulation 352 14.2 Small-Signal Models of General Converter Forms Operated in CCM/DCM 355 14.3 An Illustration Example 361 Further Reading 365 15 Analysis and Design of an Isolated Single-Stage Converter Achieving Power Factor Correction and Fast Regulation 367 15.1 Derivation of the Single-Stage Converter 368 15.2 Analysis of the Isolated Single-Stage Converter Operated in DCM + DCM 369 15.3 Design of a Peak Current Mode Controller for the ISSC 373 15.4 Practical Consideration and Design Procedure 377 15.5 Hardware Measurements 38 15.6 Design of an H∞ Robust Controller for the ISSC 382 Further Reading 392 Index 395
1.3 Well-Known PWM Converters 10
Subject Areas: Electronics & communications engineering [TJ]
