Title: A novel hierarchical-based simulation method for refined calculation of Litz wire structure

Authors: Wen Jiang; Yuchuang Sun; Wangzhe Li

Addresses: The School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China ' The Aerospace Information Research Institute, Chinese Academy of Sciences, National Key Lab of Microwave Imaging Technology, Beijing, 100094, China; School of Electronics, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China ' The Aerospace Information Research Institute, Chinese Academy of Sciences, National Key Lab of Microwave Imaging Technology, Beijing, 100094, China; School of Electronics, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Abstract: In order to avoid skin effect, Litz wire is a common structure in the field of high-frequency power transmission. The refined Litz wire structure simulation is more accurate for the calculation of current density and electromagnetic force of the wire, which is more conducive to accurately evaluate the stability and safety of the wire. However, the refined simulation often leads to increased computer memory. In order to solve the problem of memory increase caused by the Litz wire, a novel low memory calculation strategy of Litz wire refined simulation based on the finite element method is proposed in this paper. Based on proving the feasibility of the calculation strategy in theory, the effectiveness and feasibility of the calculation strategy are verified by simulation and practical tests.

Keywords: electromagnetic simulation; Litz line; refined simulation of Litz line structure.

DOI: 10.1504/IJMIC.2023.133439

International Journal of Modelling, Identification and Control, 2023 Vol.43 No.4, pp.352 - 359

Received: 21 Jun 2022
Received in revised form: 15 Oct 2022
Accepted: 28 Oct 2022
Published online: 15 Sep 2023 *

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