High-efficiency coil design for wireless power transfer: Mitigating misalignment challenges in transportation

Tushar Debnath, Suman Majumder and Krishnarti De

Energy, 2025, vol. 325, issue C

Abstract: The wireless power transfer (WPT) technology has significantly transformed the transportation industry over the past decade, particularly in applications like electric vehicles. However, one major challenge remains: maintaining optimal energy transfer efficiency despite misalignment between the charging coils. This study investigates the impact of misalignment on energy coupling between coils and proposes a low-cost solution to address the issue. Three coil geometries—Square, Pentagon, and Double-D—are analyzed to determine the most efficient and stable configuration under misalignment conditions. The results indicate that the pentagon coil achieves over 99 % energy transfer efficiency, with tolerances of up to 15° angular and 2 cm horizontal misalignment. Furthermore, the pentagon coil exhibits a high degree of stability, with only a 5 % variation in the coupling coefficient under misaligned conditions, making it a promising solution for robust WPT systems in transportation.

Keywords: Coupling coefficient; Efficiency; Misalignment; Quality factor; Coil design; ANSYS (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544225015713
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:325:y:2025:i:c:s0360544225015713

DOI: 10.1016/j.energy.2025.135929

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().