Work

Accurate Transient Thermal Analysis for Ferrite-Based Wireless Power Transfer Coupler Using Double-D Coil

Year: 2025

Type: article

Abstract: Temperature is a vital operation parameter affecting the stability and reliability of the wireless power transfer (WPT) system. This paper conducts an accurate transient thermal analysis for the WPT doubleD magnetic coupler, covering power loss measurement for the coil and the magnetic core. In this work, an automated interactive tool is developed to achieve fast thermal modeling. To enhance the simulation accuracy and efficiency of the numerical model, geometric segmentation modeling and homogenization modeling are employed for the magnetic core and the coil, respectively. To achieve accurate loss calculation in numerical simulation, a measurement scheme based on the equal power method is proposed to indirectly measure the AC resistance of the coil, and the core losses are extracted from the AC-AC losses of the WPT system, which comprehensively considers the effects of core geometric shape and current harmonics. Finally, the numerical model is carefully calibrated, and its accuracy is validated at different power levels, up to 5.2 kW, during the longterm operation of the WPT system.

Source: IEEE Journal of Emerging and Selected Topics in Power Electronics

DOI: 10.1109/jestpe.2025.3571759

Authors: Weisheng Guo, C. Q. Jiang, Yibo Wang, Xiaosheng Wang, Chen Chen, Mingyao Ma

Institutions: City University of Hong Kong, Hefei University of Technology

Language: English

Topic: Wireless Power Transfer Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,645

Funders: Research Grants Council, University Grants Committee, The Research Council