Electric compressor systems for air conditioning operations are an essential part in battery electric vehicle systems, which are not applicable to conventional belt-driven compressors due to no combustion engines. Three-phase voltage source inverters (VSI) and interior permanent magnet (IPM) motors are generally used for electric compressor systems in battery electric vehicles. Direct current (DC)-link capacitors are a critical component in the power converter systems, which affect the cost, size, performances and scale. Metallized polypropylene film capacitors are considered more reliable than conventional electrolytic capacitors for high temperature environments such as electric vehicle applications. This paper presents comprehensive comparisons and evaluations of electric compressors with two types of DC-link capacitors. Based on a 5 kW IPM motor drives and a VSI with a nominal DC voltage of 360 V for electric compressors, performances with electrolytic and film capacitors have been evaluated by experimental tests.

中文翻译：

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电池电动汽车系统中基于VSI的电动压缩机不同类型的直流环节电容器的实验比较和评估

用于空调操作的电动压缩机系统是电池电动汽车系统的重要组成部分，由于没有内燃机，因此不适用于传统的皮带驱动压缩机。三相电压源逆变器（VSI）和内部永磁体（IPM）电动机通常用于电池电动车中的电动压缩机系统。直流（DC）链路电容器是功率转换器系统中的关键组件，它会影响成本，尺寸，性能和规模。对于高温环境（如电动汽车应用），金属化聚丙烯薄膜电容器被认为比传统的电解电容器更可靠。本文对带有两种直流母线电容器的电动压缩机进行了全面的比较和评估。