This book belongs to the subject of Electric Engineering, and involves the concept of PT symmetry in quantum mechanics. It presents a concise and insightful view of the knowledge on PT symmetric circuits. This book first offers an overview of the development and challenges of wireless power transfer technology, as well as the introduction of PT symmetry in wireless power transfer, and then briefly introduces PT symmetry and its representation in circuits, so as to present the realization methods of negative resistor as the key component of PT symmetric circuits. On this basis, PT symmetric wireless power transfer systems are constructed, and their characteristics, including constant power, constant efficiency, constant voltage and constant current, are analyzed. Therein, the system designs and implementations are also mentioned. Next, the various techniques for improving performances of PT symmetric wireless power transfer, such as improvement of transfer distance, reduction of switching frequency and losses, etc. Moreover, the basic structures, transfer characteristics, system designs and implementations of different types of PT symmetric wireless power transfer systems are proposed, including multi-load system, multi-relay coil system, capacitive coupled system, inductive and capacitive dual-coupled system. Therefore, this book provides readers with enough background and understanding to go deeper in the topic of PT symmetric wireless power transfer, so that this book can be used as a textbook for courses related to PT symmetric circuits, PT symmetric wireless power transfer, etc. This book is intended for students without an extensive mathematical background, and is suitable for advanced undergraduate and graduate students, engineers and researchers who focus on the PT symmetric circuits, PT symmetric wireless power transfer systems.
Table of contents (11 chapters)
Front Matter
Pages i-xvi
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Introduction to PT-Symmetric Wireless Power Transfer
Bo Zhang, Xujian Shu, Lihao Wu
Pages 1-26
PT-Symmetric Principle and Circuits
Bo Zhang, Xujian Shu, Lihao Wu
Pages 27-45
PT-Symmetric Magnetic-Field Coupled Wireless Power Transfer System
Bo Zhang, Xujian Shu, Lihao Wu
Pages 47-75
Transfer Characteristics of Constant Power Against Distance and Misalignment
Bo Zhang, Xujian Shu, Lihao Wu
Pages 77-90
Transfer Characteristics of Constant Controllable Power Against Distance and Misalignment
Bo Zhang, Xujian Shu, Lihao Wu
Pages 91-109
Transfer Characteristics of Constant Voltage/Constant Current
Bo Zhang, Xujian Shu, Lihao Wu
Pages 111-132
PT-Symmetric Multi-load Magnetic-Field Coupled Wireless Power Transfer System
Bo Zhang, Xujian Shu, Lihao Wu
Pages 133-169
PT-Symmetric Magnetic-Field Coupled Wireless Power Transfer System with Relay Coils
Bo Zhang, Xujian Shu, Lihao Wu
Pages 171-191
Techniques for Improving Performances of PT-Symmetric Magnetic-Field Wireless Power Transfer System
Bo Zhang, Xujian Shu, Lihao Wu
Pages 193-254
PT-Symmetric Electric-Field Coupled Wireless Power Transfer System
Bo Zhang, Xujian Shu, Lihao Wu
Pages 255-275
PT-Symmetric Electric–Magnetic Coupled Hybrid Wireless Power Transfer System
Bo Zhang, Xujian Shu, Lihao Wu
Pages 277-300
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Authors and Affiliations
School of Electric Power Engineering, South China University of Technology, Guangzhou, China
Bo Zhang, Lihao Wu
College of Electrical Engineering, Fuzhou University, Fuzhou, China
Xujian Shu
About the authors
Bo Zhang (Fellow, IEEE) was born in Shanghai, China, in 1962. He received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 1982, the M.S. degree in power electronics from Southwest Jiaotong University, Chengdu, China, in 1988, and the Ph.D. degree in power electronics from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 1994. He is currently a Distinguished Professor with the School of Electric Power, South China University of Technology, Guangzhou, China. He has authored or co-authored 7 books in IEEE-Wiley and Springer and over 600 technical papers, and he holds over 230 patents. His current research interests include nonlinear analysis, modeling and control of power electronic converters, and wireless power transfer applications.
Xujian Shu was born in Anhui, China. She received the B.S. degree in electrical engineering and automation from China University of Mining and Technology, Xuzhou, China, in 2015, and received the Ph.D. degree in power electronics from South China University of Technology, Guangzhou, China, in 2021. She is currently a lecturer of Fuzhou University, Fuzhou, China. Her research interests include wireless power transfer applications, and fractional-order circuits.
Lihao Wu was born in Fujian, China, in 1994. He received the B.S. degree in electrical engineering from Fuzhou University, Fuzhou, China, in 2017. and the Ph.D. degree in power electronics at School of Electric Power, South China University of Technology, Guangzhou, China, in 2022. His research interests include wireless power transfer applications and power electronics converters.
About the authors
Bo Zhang (Fellow, IEEE) was born in Shanghai, China, in 1962. He received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 1982, the M.S. degree in power electronics from Southwest Jiaotong University, Chengdu, China, in 1988, and the Ph.D. degree in power electronics from the Nanjing University of Aeronautics and Astronautics, Nanjing, China, in 1994. He is currently a Distinguished Professor with the School of Electric Power, South China University of Technology, Guangzhou, China. He has authored or co-authored 7 books in IEEE-Wiley and Springer and over 600 technical papers, and he holds over 230 patents. His current research interests include nonlinear analysis, modeling and control of power electronic converters, and wireless power transfer applications.
Xujian Shu was born in Anhui, China. She received the B.S. degree in electrical engineering and automation from China University of Mining and Technology, Xuzhou, China, in 2015, and received the Ph.D. degree in power electronics from South China University of Technology, Guangzhou, China, in 2021. She is currently a lecturer of Fuzhou University, Fuzhou, China. Her research interests include wireless power transfer applications, and fractional-order circuits.
Lihao Wu was born in Fujian, China, in 1994. He received the B.S. degree in electrical engineering from Fuzhou University, Fuzhou, China, in 2017. and the Ph.D. degree in power electronics at School of Electric Power, South China University of Technology, Guangzhou, China, in 2022. His research interests include wireless power transfer applications and power electronics converters.
