Theory and Technology of Wireless Power Transfer: Inductive, Radio, Optical, and Supersonic Power Transfer

Cover
Half Title
Title Page
Copyright Page
Table of Contents
About the Authors
Chapter 1 Introduction
	References
Chapter 2 Wireless Power Transmission By Magnetic Field
	2.1 Overview of Magnetic Coupling
		2.1.1 Frequency in Terms of Magnetic Field Coupling
		2.1.2 Principle of Magnetic Field Coupling (Electromagnetic Induction, IPT)
		2.1.3 Principle of Magnetic Field Resonance Coupling
		2.1.4 Effects of Magnetic Field Resonance Coupling
		2.1.5 Seamless Comparison (N–N, N–S, S–N, S–S)
		2.1.6 Coil: KQ Product, Eddy Currents and Proximity Effect
		2.1.7 Short and Open Types
		2.1.8 KHz Band Coil
		2.1.9 MHz Band Coil
		2.1.10 Multiband Coils in KHz and MHz Bands
	2.2 Resonant Circuit Topology of Magnetic Field Coupling
		2.2.1 S–S, S–P, P–S, P–P
		2.2.2 LCL and LCC, Etc.
		2.2.3 Control Using Circuit Topology Characteristics
		2.2.4 Short Mode
		2.2.5 HAR
	2.3 Application Examples of Wireless Power Transfer By Coupling
		2.3.1 Standard for EVs (SAE)
		2.3.2 Overview of Dynamic Wireless Power Transfer
		2.3.3 DWPT System and Control
			2.3.3.1 Outline of DWPT System and Control
			2.3.3.2 Introduction to DWPT System and Control
			2.3.3.3 Dynamic Wireless Power Transfer System
			2.3.3.4 Sensorless Energized Section Switching
			2.3.3.5 Experiment of DWPT Control
			2.3.3.6 Conclusion of DWPT Control
		2.3.4 Coil-Embedded Road for DWPT
			2.3.4.1 Outline of Coil-Embedded Road for DWPT
			2.3.4.2 Introduction to Coil-Embedded Road for DWPT
			2.3.4.3 DWPT System Configuration
			2.3.4.4 DWPT Road and Measurement Environment
			2.3.4.5 Four Construction Methods: Case 1 to Case 4
			2.3.4.6 Coil-Embedded Road Construction
			2.3.4.7 Electrical Characteristics of Coils
			2.3.4.8 Case Selection for DWPT Buried Open Coil
			2.3.4.9 Coil Electrical Characteristics Before and After Burial
			2.3.4.10 Mechanical Properties of Coils
			2.3.4.11 Mechanical Characteristics of Road Pavement
			2.3.4.12 Impact On Roads
			2.3.4.13 Allowable Driving Years
			2.3.4.14 Conclusion to this Subsection
	Acknowledgment for this Subsection
		2.3.5 WPT On Power Passage Between Rebars
			2.3.5.1 Background to the Rebar WPT Study
			2.3.5.2 Coil and Rebar
			2.3.5.3 Four Different Conditions
			2.3.5.4 Experiment: Rebar Insulation
			2.3.5.5 Conclusion to the Rebar WPT
		2.3.6 Inducing Cancer Cell Death By WPT
			2.3.6.1 Outline of Inducing Cancer Cell Death By WPT
			2.3.6.2 Introduction to Inducing Cancer Cell Death By WPT
			2.3.6.3 Photodynamic Therapy
			2.3.6.4 WPT System Design
			2.3.6.5 Evaluation of the WPT System
			2.3.6.6 Inducing Cancer Cell Death
			2.3.6.7 Conclusion to Inducing Cancer Cell Death By WPT
		2.3.7 Seawater and WPT
			2.3.7.1 Outline of Seawater and WPT
			2.3.7.2 Introduction
			2.3.7.3 Change in Coil Characteristics Due to Seawater
			2.3.7.4 Change in Characteristics With Spacer
			2.3.7.5 Conclusion
	2.4 Chapter Summary
	References
Chapter 3 Wireless Power Transfer By Capacitive Coupling
	3.1 Introduction
	3.2 Model of the Wireless CPT Link
		3.2.1 The End-To-End CPT Link
		3.2.2 Architectures of the Capacitive Wireless Link
		3.2.3 Operating Conditions of the Wireless Capacitive Link
		3.2.4 Computation of the Power Loss Contributions Inside the WPT Capacitive Network
			3.2.4.1 Maximization of the Efficiency: ηRF–RF
			3.2.4.2 Maximization of the Power Absorbed By the Load
			3.2.4.3 Conjugate Matching Solution
	3.3 Numerical Modeling of a Capacitive WPT Link
		3.3.1 Full-Wave Simulation of the Capacitive Link
		3.3.2 Circuital Simulation of the Capacitive Link
	3.4 Compensating Networks
	3.5 Conclusions
	References
Chapter 4 The Receiving Part of Radiative Wireless Power Transfer
	4.1 Introduction
	4.2 RF-DC Conversion
		4.2.1 High Input Impedance Efficiency Enhancement of RF-DC Converter
			4.2.1.1 RF-DC Converters Design Theory
			4.2.1.2 RF-DC Converter’s Designing Procedures
			4.2.1.3 Final Remarks Regarding the Source Pull Designing Approach
		4.2.2 Hybrid Mm-Wave GaAs RF-DC Converter
			4.2.2.1 RF-DC Converter Circuit Design and Implementation
			4.2.2.2 Measurement Setup and Results Discussion
	4.3 Conclusion
	Acknowledgment
	References
Chapter 5 Optical WPT
	5.1 Introduction to Wireless Optical Power Transmission
		5.1.1 Comparison of OWPT With Other WPT Technologies
		5.1.2 Is OWPT a New Technology?
	5.2 Fundamentals of OWPT
		5.2.1 Differences Between OWPT and Solar Power Generation
		5.2.2 Sunlight and Monochromatic Light Irradiation of Solar Cells
		5.2.3 Basic Physics and Characteristics of Solar Cells
			5.2.3.1 Electrical Characteristics of Solar Cells
			5.2.3.2 Efficiency of Solar Cells
		5.2.4 Features of Light Sources
			5.2.4.1 High-Power Laser Light Sources
		5.2.4.2 Efficiency of Lasers
			5.2.4.3 Beam Characteristics and Long-Distance Transmission
		5.2.5 Efficiency of Optical Wireless Power Transmission
			5.2.5.1 Expected Efficiency as Upper Limit Performance
			5.2.5.2 Effect of Transmission Distance On Efficiency
	5.3 Components for Optical Wireless Power Transmission Systems
		5.3.1 Configuration of Optical Wireless Power Transmission Systems
		5.3.2 Beam Irradiation Subsystem
		5.3.3 Function Modules for OWPT System Configuration
		5.3.4 Safety Technology
	5.4 Applications of Optical Wireless Power Transmission
		5.4.1 In Vivo Terminals, Small IoT Terminals, and Consumer Applications
		5.4.2 Dynamic Charging for Mobilities
		5.4.3 Underwater Applications
		5.4.4 Space Applications
		5.4.5 Optical Power Transmission Using Fiber Optics
	References
Chapter 6 Ultrasonic WPT
	6.1 Basic Theory
	6.2 Transceiver Devices
	6.3 Applications
	References
Chapter 7 Pros and Cons of Each WPT System
	7.1 General Comparison
	7.2 Theoretical Comparison
	7.3 Technical Comparison
	7.4 WPT Safety Issues
	References
Index