Wireless Power Transfer Technologies: Theory and technologies, 2nd Edition

✍ Scribed by Professor Naoki Shinohara

• Publisher: The Institution of Engineering and Technology, London
• Year: 2024
• Tongue: English
• Leaves: 345
• Edition: 2
• Category: Library

✦ Synopsis

The new edition of this established work on wireless power transfer. Updates include output characteristics of multi-hop systems, technologies, new experimental data, developments on regulation and standardization, WPT for dynamic EV charging, and far-field WPT.

✦ Table of Contents

Cover
’Contents
’About the editor
’1 Introduction
’References
’2 Basic theory of inductive coupling
’2.1 Introduction
’2.2 Wireless power transfer system (WPT system)
’2.2.1 Basic theory of WPT system
’2.2.2 Microwave method
’2.2.3 Magnetic resonance method
’2.2.4 Electrical resonance method
’2.2.5 Electromagnetic induction method
’2.3 Magnetic induction
’2.3.1 Power transformer
’2.3.2 Magnetic induction (LC mode)
’2.4 Medical applications
’References
’3 Basic theory of resonance coupling WPT
’3.1 Classification of WPT systems
’3.1.1 Classification of near- and far-field WPT
’3.1.2 Classification of resonant WPT
’3.1.3 Relationship among WPT types
’3.2 Unified model of resonance coupling WPT
3.2.1 Concept of the “coupler”
’3.2.2 Unified model based on resonance and coupling
’3.2.3 Application for LC resonator
’3.2.4 Application for electric field coupling WPT
’3.2.5 Application for a self-resonator
’3.3 Generalized model of WPT
’3.3.1 Energy flow in WPT system
’3.3.2 Generalized model
’3.3.3 Understanding of coupled-resonator WPT system through generalized model
’3.3.4 Understanding of coupler-and-matching-circuit WPT system through generalized model
’References
’4 Multi-hop wireless power transmission
’4.1 Transfer-distance extension using the relay effect
’4.2 Multi-hop routing
’4.3 Equivalent circuit and transfer efficiency
’4.4 Design based on the BPF theorem
’4.5 Design theorem for arbitrary-hop power transmission
’4.6 Power-efficiency estimation
’4.7 Output characteristics with a switching power supply
’References
’5 Circuit theory on wireless couplers
’5.1 Introduction
’5.2 Inductive coupler
’5.2.1 Equivalent circuit
’5.2.2 Coupling coefficient
’5.2.3 Quality factor
’5.2.4 Coupling quality factor
’5.2.5 Optimum impedance
’5.2.6 Maximum efficiency
’5.3 Capacitive coupler
’5.3.1 Equivalent circuit
’5.3.2 Coupling coefficient
’5.3.3 Quality factor
’5.3.4 Coupling quality factor
’5.3.5 Optimum admittance
’5.3.6 Maximum efficiency
’5.4 Generalized formulas
’5.4.1 Two-port black box
’5.4.2 Impedance matrix
’5.4.3 Generalized kQ
’5.4.4 Optimum load and input impedance
’5.4.5 Maximum efficiency
’5.5 Conclusion
’A.1 Measurement of kQ in practice
A.2 Geometrical demonstration from kQ to ηmax
’A.3 Progress in WPT theory
’References
’6 Inverter/rectifier technologies
’6.1 Introduction
’6.2 WPT system construction
’6.3 General theory of optimal WPT system designs
’6.3.1 Coupling coils
’6.3.2 Optimal design of coupling part
’6.3.3 Efficiency of coupling part
’6.3.4 Design strategies of rectifier and inverter
’6.4 High-efficiency rectifier
’6.4.1 Class-D rectifier
’6.4.2 Effects of diode parasitic capacitance
’6.4.3 Class-E rectifier
’6.4.4 Class-E/F rectifier
’6.5 High-efficiency inverters
’6.5.1 Class-D inverter
’6.5.2 Class-E inverter
’6.5.3 Class-DE inverter
’6.5.4 Class-E/F inverter
6.5.5 Class-Φ inverter
’6.6 Design example of optimal WPT system
’6.6.1 Optimal design for fixed coil parameters
’6.6.1.1 Receiver-part design
’6.6.1.2 Class-E inverter design
’6.6.2 Optimal WPT system design
’6.7 Conclusion
’References
’7 Basic theory of wireless power transfer via’radio’waves
’7.1 Introduction
’7.2 Propagation of radio waves
’7.2.1 Radio waves in a far field
’7.2.2 Radio waves in the radiative near field
’7.2.3 Radio waves in the reactive near field
’7.2.4 Radio waves from a dipole antenna
’7.3 Directivity control and beam formation using phased-array antenna
’7.4 Receiving-antenna efficiency
’References
’8 Technologies of antenna and phased array for wireless power transfer via radio waves
’8.1 Introduction and rationale
’8.2 Design of antenna and phased arrays for WPT: problem formulation
’8.2.1 The end-to-end WPT efficiency
’8.2.2 The transmitting WPT antenna design problem
’8.3 WPT-phased array synthesis techniques
’8.3.1 Uniform excitations in WPT
’8.3.2 Heuristic tapering methods
’8.3.3 Designs based on optimization strategies
’8.3.4 Optimal WPT-phased array synthesis
’8.3.5 Unconventional architectures for WPT-phased arrays
’8.4 Final remarks, current trends, and future perspectives
’References
’9 Transmitter/rectifier technologies in WPT’via’radio waves
’9.1 Introduction
’9.2 RF transmitter
’9.2.1 RF amplifier with semiconductor
’9.2.2 Vacuum tube type microwave generator/amplifier
’9.3 RF rectifier
’9.3.1 RF rectifier with semiconductor
’9.3.2 Vacuum tube-type microwave rectifier
’9.4 RF amplifier/rectifier with semiconductor
’References
’10 Applications of coupling WPT for electric vehicle
’10.1 Introduction
’10.2 EV and charging
’10.3 Conductive charging
’10.4 Wireless charging
’10.4.1 Field evaluation in Europe
’10.4.2 Field evaluation in Japan
’10.4.3 Field evaluation in Korea
’10.4.4 Field evaluation in China
’10.5 Regulation and standardization for WPT
’10.5.1 Japan
’10.5.2 European standards for electricity supply
’10.5.3 China
’10.5.4 IEC/ISO and SAE
’10.6 ITU activity on WPT; frequency allocation
’10.6.1 2014: Approval of non-beam WPT report
’10.7 Coexisting with other wireless service (CISPR)
’10.8 Human safety: IEC TC106 and ICNIRP
’10.9 WPT application for the future: dynamic charging for EV
’10.10 Progress on standardization after ed1
’10.10.1 IEC/ISO activity
’10.10.2 SAE and UL
’10.10.3 China GB/T
’10.10.4 ITU
’10.10.5 CISPR
’10.10.6 IEC TC 106
’10.11 Commercialization for mass production of passenger EV
’10.12 Field trials of DWPT for EV after 2015
’10.13 European project CollERS1 and 2 (electric road system)
’10.14 Future possibility of WPT and DWPT for carbon-free society
’References
’11 Applications of long-distance wireless power’transfer
’11.1 Introduction
’11.2 Long-distance WPT in far field
’11.2.1 Energy harvesting and scavenging
’11.2.2 Ubiquitous WPT
’11.3 Long-distance WPT in the radiative near field
’11.4 Long-distance WPT in fielded field
’11.5 Near-field WPT in a cavity resonator
’References
’12 Biological issue of electromagnetic fields and’waves
’12.1 Introduction
’12.2 Epidemiological studies
’12.3 Animal studies
’12.4 Cellular studies
’12.4.1 Genotoxic effects
’12.4.2 Nongenotoxic effects
’12.5 Conclusions on IF and RF studies
’References
’13 Impact of electromagnetic interference arising from wireless power transfer upon implantable’medical device
’13.1 EMI studies on active implantable’medical devices
’13.1.1 In vitro EMI measurement system for WPTSs
’13.1.2 Operation conditions of the AIMD
’13.1.3 Fundamental test procedure
’13.1.4 Measurement results for WPTS examples
’13.1.5 Interference voltage measurement for beam-type wireless power transfer
’13.2 RF-induced heating of metal implants
’References
Index
Back Cover