Fast Numerical Power Loss Calculation for High-Frequency Litz Wires

被引：40

作者：

Ehrlich, Stefan ^{[1
]}

Rossmanith, Hans ^{[2
]}

Sauer, Marco ^{[1
]}

Joffe, Christopher ^{[1
]}

Maerz, Martin ^{[1
,3
]}

机构：

[1] Fraunhofer Inst Integrated Sytsems & Device Techn, D-91058 Erlangen, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg, Chair Electromagnet Fields, D-91054 Erlangen, Germany

[3] Friedrich Alexander Univ Erlangen Nurnberg, Chair Power Elect, D-91054 Erlangen, Germany

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2021年 / 36卷 / 02期

关键词：

Wires; Numerical models; Magnetic fields; Windings; Skin; Mathematical model; Finite element analysis; Bundle level; litz wire; numerical calculation; partial element equivalent circuit (PEEC); power losses; proximity effect; real litz wire behavior; simulation; skin effect; MODEL;

D O I：

10.1109/TPEL.2020.3008564

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This article presents a fast numerical calculation method of realistic power losses for high-frequency litz wires. Explicitly, the imperfect structure of litz wires is considered when calculating losses due to an excitation current (skin losses) and external magnetic fields (proximity losses). Calculations of litz wires with more than 1000 strands were performed on a personal computer and have been validated by measurements up to 10 MHz. In the calculation, the impact of the bundle structure on skin and proximity losses is examined. The method allows to select a suitable litz wire for a specific application or to design a litz wire considering realistic twisting structures.

引用

页码：2018 / 2032

页数：15

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