Time-based Reliability Analysis of Electrolytic Capacitors for Automotive Applications Using Multi-Domain Simulation

2021 22nd International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE) Pub Date : 2021-04-19 DOI:10.1109/EuroSimE52062.2021.9410882

Philipp Adler, R. Mallwitz

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引用次数: 2

Abstract

Electromobility expands the range of tasks for electrical auxiliary units in electric vehicles, such as cooling the vehicle battery during the charging process. This doubles the lifetime requirement of the electric refrigerant compressor, which largely depend on the built-in aluminium electrolytic capacitors (AEC). This compressor converts the DC voltage of the high-voltage battery to drive an electric motor with a three-phase AC current. To determine the reliability of the AEC, a multi-domain simulation is presented in this paper, which estimates the aging of the DC-Link capacitors over the entire lifetime of the vehicle. By varying the simulation parameters, conclusions can be drawn about the respective effect of the various physical domains on the service life of the capacitors. The thermal connection of the components plays a major role here.

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基于多域仿真的汽车用电解电容器时间可靠性分析

电动汽车扩大了电动汽车电气辅助装置的任务范围，例如在充电过程中冷却汽车电池。这使得电动制冷剂压缩机的使用寿命增加了一倍，这在很大程度上取决于内置的铝电解电容器(AEC)。该压缩机将高压电池的直流电压转换为具有三相交流电流的电动机。为了确定AEC的可靠性，本文提出了一种多域仿真方法，该方法估计了车辆全寿命周期内DC-Link电容器的老化情况。通过改变模拟参数，可以得出不同物理域对电容器使用寿命的影响。组件的热连接在这里起着主要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2021 22nd International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE)

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