Wireless Power Transfer: Using Magnetic and Electric Resonance Coupling Techniques

ISBN-13: 9789811545825 / Angielski / Miękka / 2021 / 427 str.

Takehiro Imura

Spis treści

1. About wireless power transfer

1.1 Category of wireless power transfer and coupling type

1.2 Overview of electromagnetic induction and magnetic resonant coupling

1.3 Overview of electric coupling and electric resonant coupling.

1.4 Radiative wireless power transfer

2. Basic knowledge of electromagnetism electric circuit

2.1 Resistor, Inductor and Capacitor

2.2 Fundamentals of electromagnetic induction

2.3 High Frequency losses (resistance)

2.4 Transient phenomena of non-resonant circuit(Pulse)

2.5 Transient phenomena of non-resonant circuit

2.6 Effective value, effective power, reactive power and instantaneous power

3. Basic phenomena of magnetic resonant coupling

3.1 Inductor and resonator

3.2 Tolerance to air gap and misalignment

3.3 Near-field electromagnetic fields

3.4 Determinant of frequency (kHz-MHz-GHz)

4. Basic resonant circuit topology (S-S)

4.1 Derivation of equivalent circuit

4.2 Equivalent circuits in non-resonant frequency

5. Comparison of electromagnetic induction and magnetic resonant coupling

5.1 Introduction to five types of resonant coupling : N-N, N-S, S-N, S-S, S-P

5.2 Equivalent circuit of non-resonant circuit (N-N)

5.3 Equivalent circuit of secondary-side resonant circuit (N-S)

5.4 Equivalent circuit of primary-side resonant circuit (S-N)

5.5 Equivalent circuit of magnetic resonant coupling (S-S)

5.6 Equivalent circuit of magnetic resonant coupling (S-P)

5.7 Summary of the five circuit types

5.8 Comparison and transition of four resonant circuits

5.9 Comparison of four resonant circuits under magnetic flux distribution

5.10 Role of main magnetic flux

6. Other resonant circuit topologies (PS, PP, LCL, LCC)

7. Open end and short end type coil

7.1 Introduction to open end and short end type coil

7.2 Intuitive description of open end type by dipole antennas

7.3 Lumped constant circuit and distributed constant circuit

7.4 Open-end and short-end type coils from the point of view of distributed constant circuits

7.5 Open-end type coils

7.6 Short-end type coils

7.7 Summary

8. System of magnetic resonant coupling

8.1 Overview of wireless power transfer system

8.2 Resistance load, constant voltage load (secondary batteries) and constant power load(motors, electronic devices)

8.3 High power transfer by frequency tracking control

8.4 Overview of efficiency maximization by impedance tracking control

8.5 Achieving maximum efficiency tracking control by impedance optimization

8.6 Maximum efficiency and desired power

8.7 ON-OFF mechanism of secondary side power to deal with short modes and constant power loads

8.8 Realization of maximum efficiency and desired power by secondary side alone

8.9 Estimation of mutual inductance

9. Repeater and multiple coils

9.1 Straight line layout of repeaters

9.2 K-Inverter theory

9.3 Calculation using Z-matrix taking into account cross-coupling effects (three coils)

9.4 Positive and negative of mutual inductance

9.5 Calculation using Z-matrix taking into account cross-coupling effects (n coils)

10. Development of multiple coils

10.1 Efficiency enhancement when transferring to multiple receivers

10.2 Cross Coupling Cancelling (CCC) method

O autorze

Takehiro Imura is an Associate Professor at the Faculty of Science and Technology, Department of Electrical Engineering at Tokyo University of Science. His research interests include wireless power transfer using magnetic resonant coupling and electric resonant coupling for stationary electric vehicles, in-motion electric vehicles, medical equipments, space equipments, IoT devices and sensors. His research interests also include fusion of dynamic wireless power transfer for electric vehicle and solar power to reduce CO2.

He is a member of the IEEE, IEEJ, IEICE and the JSAE. He received the First Prize Paper Award from the IEEE Transactions on Power Electronics in 2017.

Blurb

This book describes systematically wireless power transfer technology using magnetic resonant coupling and electric resonant coupling and presents the latest theoretical and phenomenological approaches to its practical implementation, operation and its applications. It also discusses the difference between electromagnetic induction and magnetic resonant coupling, the characteristics of various types of resonant circuit topologies and the unique features of magnetic resonant coupling methods. Designed to be self-contained, this richly illustrated book is a valuable resource for a broad readership, from researchers to engineers and anyone interested in cutting-edge technologies in wireless power transfer.