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基于有限元均质化方法的磁性元件快速精确热建模

Fast and Accurate Thermal Modeling of Magnetic Components by FEA-Based Homogenization

语言:

中文摘要

针对电力电子变换器中磁性元件三维热仿真耗时过长的问题,本文提出了一种两步均质化方法。该方法在保证高精度的前提下简化了仿真过程,并提供了相应的方程和设计指南。该技术适用于实心圆导线、利兹线或箔绕磁性元件的热建模。

English Abstract

The use of three-dimensional (3D) thermal simulations of magnetic components for power converters is limited to validation of final designs due to time consumption. A two-step homogenization is proposed to simplify them, while keeping good accuracy. The required equations and some guidelines are described in this paper. It can be applied to solid round wire, litz wire, or foil wound magnetic compo...
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SunView 深度解读

磁性元件(电感、变压器)是阳光电源组串式/集中式光伏逆变器及PowerTitan/PowerStack储能变流器中的核心发热部件。该均质化热建模方法能显著缩短研发周期,提升在高功率密度设计下的热设计精度。建议研发团队将其集成至iSolarCloud底层仿真工具链中,用于优化磁性元件的散热结构设计,特别是在高频化趋势下,该技术有助于提升逆变器及PCS产品的可靠性与功率密度,降低温升风险,从而延长设备全生命周期寿命。