High-Frequency Magnetic Components / Edition 1

High-Frequency Magnetic Components / Edition 1

by Marian K. Kazimierczuk
     
 

ISBN-10: 0470714530

ISBN-13: 9780470714539

Pub. Date: 10/20/2009

Publisher: Wiley

A unique text on the theory and design fundaments of inductors and transformers, updated with more coverage on the optimization of magnetic devices and many new design examples

The first edition is popular among a very broad audience of readers in different areas of engineering and science. This book covers the theory and design techniques of the

Overview

A unique text on the theory and design fundaments of inductors and transformers, updated with more coverage on the optimization of magnetic devices and many new design examples

The first edition is popular among a very broad audience of readers in different areas of engineering and science. This book covers the theory and design techniques of the major types of high-frequency power inductors and transformers for a variety of applications, including switching-mode power supplies (SMPS) and resonant dc-to-ac power inverters and dc-to-dc power converters. It describes eddy-current phenomena (such as skin and proximity effects), high-frequency magnetic materials, core saturation, core losses, complex permeability, high-frequency winding resistance, winding power losses, optimization of winding conductors, integrated inductors and transformers, PCB inductors, self-capacitances, self-resonant frequency, core utilization factor area product method, and design techniques and procedures of power inductors and transformers. These components are commonly used in modern power conversion applications. The material in this book has been class-tested over many years in the author’s own courses at Wright State University, which have a high enrolment of about a hundred graduate students per term. The book presents the growing area of magnetic component research in a textbook form, covering the foundations for analysing and designing magnetic devices specifically at high-frequencies. Integrated inductors are described, and the Self-capacitance of inductors and transformers is examined. This new edition adds information on the optimization of magnetic components (Chapter 5). Chapter 2 has been expanded to provide better coverage of core losses and complex permeability, and Chapter 9 has more in-depth coverage of self-capacitances and self-resonant frequency of inductors. There is a more rigorous treatment of many concepts in all chapters. Updated end-of-chapter problems aid the readers’ learning process, with an online solutions manual available for use in the classroom.

  • Provides physics-based descriptions and models of discrete inductors and transformers as well as integrated magnetic devices
  • New coverage on the optimization of magnetic devices, updated information on core losses and complex permeability, and more in-depth coverage of self-capacitances and self-resonant frequency of inductors
  • Many new design examples and end-of-chapter problems for the reader to test their learning
  • Presents the most up-to-date and important references in the field
  • Updated solutions manual, now available through a companion website

An up to date resource for Post-graduates and professors working in electrical and computer engineering. Research students in power electronics. Practising design engineers of power electronics circuits and RF (radio-frequency) power amplifiers, senior undergraduates in electrical and computer engineering, and R & D staff.

Product Details

ISBN-13:
9780470714539
Publisher:
Wiley
Publication date:
10/20/2009
Edition description:
Older Edition
Pages:
508
Product dimensions:
6.70(w) x 9.90(h) x 1.30(d)

Table of Contents

Preface.

About the Author. 

List of Symbols.

1 Fundamentals of Magnetic Devices.

1.1 Introduction.

1.2 Magnetic Relationships.

1.3 Magnetic Circuits.

1.4 Magnetic Laws.

1.5 Eddy Currents.

1.6 Core Saturation.

1.7 Volt-Second Balance.

1.8 Inductance.

1.9 Inductance Factor.

1.10 Magnetic Energy.

1.11 Self-Resonant Frequency.

1.12 Classification of Power Losses in Magnetic Components.

1.13 Noninductive Coils.

1.14 Summary.

1.15 References.

1.16 Review Questions.

1.17 Problems.

2 Magnetic Cores.

2.1 Introduction.

2.2 Properties of Core Materials.

2.3 Magnetic Dipoles.

2.4 Magnetic Domains.

2.5 Curie Temperature.

2.6 Magnetization.

2.7 Magnetic Materials.

2.8 Hysteresis.

2.9 Core Permeability.

2.10 Core Geometries.

2.11 Iron Alloy Cores.

2.12 Amorphous Alloy Cores.

2.13 Nickel–Iron and Cobalt–Iron Cores.

2.14 Ferrite Cores.

2.15 Powder Cores.

2.16 Nanocrystalline Cores.

2.17 Superconductors.

2.18 Hysteresis Core Loss.

2.19 Eddy-Current Core Loss.

2.20 Total Core Loss.

2.21 Complex Permeability.

2.22 Summary.

2.23 References.

2.24 Review Questions.

2.25 Problems.

3 Skin Effect.

3.1 Introduction.

3.2 Skin Depth.

3.3 Ratio of AC-to-DC Winding Resistance.

3.4 Skin Effect in Long Single Round Conductor.

3.5 Current Density in Single Round Conductor.

3.6 Impedance of Round Conductor.

3.7 Magnetic Field Intensity for Round Wire.

3.8 Other Methods of Determining the Round Wire Inductance.

3.9 Power Density in Round Conductor.

3.10 Skin Effect on Single Rectangular Plate.

3.11 Summary.

3.12 References.

3.13 Review Questions.

3.14 Problems.

4 Proximity Effect.

4.1 Introduction.

4.2 Proximity and Skin Effects in Two Parallel Plates.

4.3 Antiproximity and Skin Effects in Two Parallel Plates.

4.4 Proximity Effect in Multiple-Layer Inductor.

4.5 Summary.

4.6 Appendix: Derivation of Proximity Power Loss.

4.7 References.

4.8 Review Questions.

4.9 Problems.

5 Winding Resistance at High Frequencies.

5.1 Introduction.

5.2 Winding Resistance.

5.3 Square and Round Conductors.

5.4 Winding Resistance of Rectangular Conductor.

5.5 Winding Resistance of Square Wire.

5.6 Winding Resistance of Round Wire.

5.7 Leakage Inductance.

5.8 Solution for Round Conductor Winding in Cylindrical Coordinates.

5.9 Litz Wire.

5.10 Winding Power Loss for Inductor Current with Harmonics.

5.11 Effective Winding Resistance for Nonsinusoidal Inductor Current.

5.12 Thermal Model of Inductors.

5.13 Summary.

5.14 References.

5.15 Review Questions.

5.16 Problems.

6 Laminated Cores.

6.1 Introduction.

6.2 Low-Frequency Solution.

6.3 General Solution.

6.4 Summary.

6.5 References.

6.6 Review Questions.

6.7 Problems.

7 Transformers.

7.1 Introduction.

7.2 Ideal Transformer.

7.3 Voltage Polarities and Current Directions in Transformers.

7.4 Nonideal Transformers.

7.5 Neumann’s Formula for Mutual Inductance.

7.6 Mutual Inductance.

7.7 Coupling Coefficient.

7.8 Dot Convention.

7.9 Series-Aiding and Series-Opposing Connections.

7.10 Reflected Impedance.

7.11 Energy Stored in Coupled Inductors.

7.12 Magnetizing Inductance.

7.13 Leakage Inductance.

7.14 Transformers with Air Gap.

7.15 Autotransformers.

7.16 Measurement of Transformer Inductances.

7.17 Stray Capacitance.

7.18 High-Frequency Transformer Model.

7.19 Noninterleaved Windings.

7.20 Interleaved Windings.

7.21 AC Current Transformers.

7.22 Winding Power Losses with Harmonics.

7.23 Thermal Model of Transformers.

7.24 Summary.

7.25 References.

7.26 Review Questions.

7.27 Problems.

8 Integrated Inductors.

8.1 Introduction.

8.2 Skin Effect.

8.3 Resistance of Rectangular Trace.

8.4 Inductance of Straight Rectangular Trace.

8.5 Construction of Integrated Inductors.

8.6 Meander Inductors.

8.7 Inductance of Straight Round Conductor.

8.8 Inductance of Circular Round Wire Loop.

8.9 Inductance of Two-Parallel Wire Loop.

8.10 Inductance of Rectangle of Round Wire.

8.11 Inductance of Polygon Round Wire Loop.

8.12 Bondwire Inductors.

8.13 Single-Turn Planar Inductor.

8.14 Inductance of Planar Square Loop.

8.15 Planar Spiral Inductors.

8.16 Multi-metal Spiral Inductors.

8.17 Planar Transformers.

8.18 MEMS Inductors.

8.19 Inductance of Coaxial Cable.

8.20 Inductance of Two-Wire Transmission Line.

8.21 Eddy Currents in Integrated Inductors.

8.22 Model of RF Integrated Inductors.

8.23 PCB Inductors.

8.24 Summary.

8.25 References.

8.26 Review Questions.

8.27 Problems.

9 Self-Capacitance.

9.1 Introduction.

9.2 High-Frequency Inductor Model.

9.3 Self-Capacitance Components.

9.4 Capacitance of Parallel-Plate Capacitor.

9.5 Self-Capacitance of Foil Winding Inductors.

9.6 Capacitance of Two Parallel Round Conductors.

9.7 Capacitance of Round Conductor and Conducting Plane.

9.8 Self-Capacitance of Single-Layer Inductors.

9.9 Self-Capacitance of Multi-layer Inductors.

9.10 Capacitance of Coaxial Cable.

9.11 Summary.

9.12 References.

9.13 Review Questions.

9.14 Problems.

10 Design of Inductors.

10.1 Introduction.

10.2 Magnet Wire.

10.3 Wire Insulation.

10.4 Restrictions on Inductors.

10.5 Window Utilization Factor.

10.6 Temperature Rise of Inductors.

10.7 Mean Turn Length of Inductors.

10.8 Area Product Method.

10.9 AC Inductor Design.

10.10 Inductor Design for Buck Converter in CCM.

10.11 Inductor Design for Buck Converter in DCM Using Ap Method.

10.12 Core Geometry Coefficient Kg Method.

10.13 Inductor Design for Buck Converter in CCM Using Kg Method.

10.14 Inductor Design for Buck Converter in DCM Using Kg Method.

10.15 Summary.

10.16 References.

10.17 Review Questions.

10.18 Problems.

11 Design of Transformers.

11.1 Introduction.

11.2 Area Product Method.

11.3 Optimum Flux Density.

11.4 Transformer Design for Flyback Converter in CCM.

11.5 Transformer Design for Flyback Converter in DCM.

11.6 Geometrical Coefficient Kg Method.

11.7 Transformer Design for Flyback Converter in CCM Using Kg Method.

11.8 Transformer Design for Flyback Converter in DCM Using Kg Method.

11.9 Summary.

11.10 References.

11.11 Review Questions.

11.12 Problems.

Appendix A Fourier Series.

Appendix B Introduction to MATLAB.

Answers to Problems. 

Index.

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