Magnetically coupled resonant wireless power transfer for internet of things perception layer: A review

Cancan Rong, Haoyang Wang, Huimin Gao, Weizhe Cai, Wei Han, Xian Zhang, Huamin Jie, Lay-Ekuakille Aime, Yefei Xu and Zhenyu Zhao

Renewable and Sustainable Energy Reviews, 2025, vol. 223, issue C

Abstract: The Internet of Things (IoT) represents a fundamental component of modern technological frameworks, with wireless power transfer (WPT) serving as a vital support for sustaining the rapidly expanding perception-layer infrastructure within this domain. This review presents a systematic analysis of magnetically coupled resonant WPT (MCR-WPT) technology specific to the IoT perception layer, focusing on developments in high-degree-of-freedom (High-DoF) and multi-pickup charging (MPC) systems. First, we elucidate the unique advantages of applying MCR-WPT within the perception layer of IoT and outline the basic theoretical principles of MCR-WPT. Then, various types of magnetic coupling mechanisms (MCM) in recently published articles are discussed and analyzed rigorously. In addition, we provide a comprehensive description of the system optimization strategies proposed to achieve better performance, categorize and compare the characteristics, and evaluate the effectiveness of various approaches. Finally, the challenges and future perspectives are proposed.

Keywords: High degree of freedom; Internet of things (IoT); Magnetic coupling mechanisms (MCM); Multi-pickup charging (MPC); Wireless power transfer (WPT); System optimization strategies (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.rser.2025.116013

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