| Title |
Preparation Comparative Analysis of Loss and Thermal Characteristics of Resonant Inductor Core Materials for Battery-Charging Applications |
| Authors |
김지수(Ji-Su Kim) ; 정택근(Taek-Keun Jung) ; 김종수(Jong-Soo Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2026.75.1.92 |
| Keywords |
Core Materials; LDC; Magnetics; PSFB; Resonant Inductor |
| Abstract |
This paper presents an integrated comparative analysis of resonant inductor core materials suitable for automotive power conversion systems, focusing on Ferrite (Mn-Zc, N87), High-Flux (Fe-Ni), and Sendust (Fe-Si-Al), based on combinations of their material properties, including eddy-current loss, hysteresis loss characteristics, and thermal behavior. Using Ansys Maxwell simulations, the loss behavior corresponding to the internal material property combinations of the magnetic cores is analyzed, and a resonant inductor core material with overall superior characteristics-such as mechanical strength and temperature performance-is selected. To validate the effectiveness of the proposed core selection method, a phase-shift full-bridge converter prototype and resonant inductors fabricated with the three materials are tested at a power level of 1. As a result, among the three experimentally evaluated materials, the system applying the High-Flux resonant inductor exhibits a total loss of 111 under 1 output conditions, while demonstrating superior mechanical robustness. |