A CEFI-based Magnetic Resonance Coupling Wireless Power Transfer System for Increased Power Output

Ali, Arshaque and Mehta, Utkal V. (2025) A CEFI-based Magnetic Resonance Coupling Wireless Power Transfer System for Increased Power Output. IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 1 . pp. 1-12. ISSN 2687-9735

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Abstract

This paper presents a novel approach to magnetic
resonance coupling wireless power transfer (WPT). The pro-
posed design implements a capacitive element with a fractional impedance (CEFI) of the order of less than unity in the receiving circuit. Existing research has primarily explored fractional-orders greater than one. However, experimental results demonstrate significant benefits from sub-unity fractional elements. Mathematical analysis and experimental validation of a series-series compensated system show promising results. With a CEFI of the order of 0.98, the system achieves a 169% increase in DC power output and a 137% improvement in AC power output compared to a similar classical system. The design maintains DC-DC efficiency and experiences only a 5% reduction in AC-AC efficiency at high coupling coefficients. These findings establish sub-unity fractional impedance components as viable solutions for WPT performance improvement.

Item Type:	Journal Article
Uncontrolled Keywords:	Wireless Power Transfer (WPT), Magnetic Resonance Coupling (MRC), Fractional-Order Capacitor, Series-Series (S-S) Compensation, Power Optimisation, Load Matching, Fractional-Order Element, Air-Core Coils, Impedance Matching
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > Robotics and Automation
Divisions:	Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User:	Utkal Mehta
Date Deposited:	08 Dec 2025 02:34
Last Modified:	08 Dec 2025 02:34
URI:	https://repository.usp.ac.fj/id/eprint/15205

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