Book Title: Intelligent Systems
Editors: Dr. S.C. Vettivel, Dr. Leema Nelson and Dr. D. Poornima
ISBN: 978-81-979197-4-9
Chapter: 11
DOI: https://doi.org/10.59646/isc11/259
Authors:
Dr. T. Bramhananda Reddy, Professor, Department of Electrical and Electronics Engineering, G. Pulla Reddy Engineering College (Autonomous), G. Pulla Reddy Nagar, Kurnool, Andhra Pradesh, India.
R. Kavitha, Assistant Professor, Department of Electronics and Communication Engineering, St. Mother Theresa Engineering College, Vagaikulam, Tuticorin, Tamil Nadu, India
Abstract
Wireless Power Transfer (WPT) refers to the transmission of electrical energy without physical connectors, a technology that is transforming power delivery across various domains. Grounded in principles of electromagnetic induction, resonance, and electromagnetic radiation, WPT addresses the increasing demand for efficient, flexible, and convenient power solutions. This article explores the evolution of WPT, from early experiments by Nikola Tesla to contemporary implementations. Key techniques, including inductive coupling, magnetic resonance coupling, and radio frequency (RF) power transfer, are discussed, highlighting their mechanisms, efficiencies, and applications. WPT’s significance is underscored by its ability to power consumer electronics, medical implants, and industrial systems without the limitations of wired connections. Future directions include high-power WPT for electric vehicles and industrial applications, long-range WPT for medical and consumer devices, multi-device WPT systems, standardization for interoperability, and advances in materials and coil designs. Real-world implementations such as WiTricity, Rezence, and Powercast demonstrate the practical potential of WPT technologies in revolutionizing industries by providing safer, more reliable, and user-friendly power solutions.