Articles | Volume 14
https://doi.org/10.5194/ars-14-139-2016
https://doi.org/10.5194/ars-14-139-2016
28 Sep 2016
 | 28 Sep 2016

Transfer impedance simulation and measurement methods to analyse shielding behaviour of HV cables used in Electric-Vehicles and Hybrid-Electric-Vehicles

Abid Mushtaq and Stephan Frei

Abstract. In the power drive system of the Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs), High Voltage (HV) cables play a major role in evaluating the EMI of the whole system. Transfer impedance (ZT) is the most commonly used performance parameter for the HV cable. To analyse and design HV cables and connectors with better shielding effectiveness (SE), appropriate measurement and simulation methods are required. In this paper, Ground Plate Method (GPM) with improvements has been proposed to measure ZT. Use of low-frequency ferrites to avoid ground-loop effects has also been investigated. Additionally, a combination of analytical model with a circuit model has been implemented to simulate limitations (frequency response) of the test setup. Also parametrical studies using the analytical model have been performed to analyse the shielding behaviour of HV cables.

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Short summary
One of the issues in Electric Vehicle (EV) is to control the electromagnetic noise, so that both High Voltage (HV) power drive system and Low Voltage (LV) systems (like communication-, infotainment-, safety systems, etc.) coexist in harmony and perform their respective functions efficiently. In this article, techniques to analyse HV cables and how to design better shielding is discussed, which may help to design better layouts for coexistence of HV and LV in EV. Aim is to assist system designers