Analysis and optimisation of electromagnetic interference in motor drive system

IF 0.4 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY

International Journal of Electric and Hybrid Vehicles Pub Date : 2020-01-01 DOI:10.1504/ijehv.2020.10025990

Xiaoshan Wu, X. Shi, Xu Li, Jianmei Lei

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引用次数: 2

Abstract

The integrated power unit (IPU) is an important source of electromagnetic interference in hybrid electrical vehicles. In this paper, applying pulse width modulation (PWM) technology, IPU converts the high-voltage DC power from power battery into three-phase AC power with adjustable voltage amplitude and frequency through the switching device IGBT to drive the permanent magnet synchronous motor. Due to the large di/dt and du/dt during the IGBT switching process, the spectra of switching voltage and current waveforms have rich high-frequency components, which generate electromagnetic interference through the circuit connection or space radiation, affecting the normal operation of electrical systems inside and around the car. Therefore, this paper analyses the electromagnetic interference mechanism and coupling propagation paths of motor drive system. The test bench of IPU was built, and the EMI characteristics of IPU were analysed based on the measured results. Finally, in order to suppress IPU electromagnetic interference, the corresponding methods are proposed to meet the electromagnetic compatibility requirements of the vehicle.

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电机驱动系统电磁干扰分析与优化

集成动力单元是混合动力汽车电磁干扰的重要来源。本文采用脉宽调制(PWM)技术，IPU通过开关器件IGBT将来自动力电池的高压直流电转换成电压幅值和频率可调的三相交流电源，驱动永磁同步电机。由于IGBT开关过程中di/dt和du/dt较大，开关电压和电流波形的频谱具有丰富的高频成分，通过电路连接或空间辐射产生电磁干扰，影响车内及周围电气系统的正常运行。因此，本文分析了电机驱动系统的电磁干扰机理和耦合传播路径。搭建了IPU的测试台架，根据测试结果分析了IPU的电磁干扰特性。最后，为了抑制IPU电磁干扰，提出了相应的方法来满足车辆的电磁兼容性要求。

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

International Journal of Electric and Hybrid Vehicles TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

1.60

自引率

14.30%

发文量

期刊介绍： IJEHV provides a high quality, fully refereed international forum in the field of electric and hybrid automotive systems, including in-vehicle electricity production such as hydrogen fuel cells, to describe innovative solutions for the technical challenges enabling these new propulsion technologies.