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arXiv · 2110.00208

In-Circuit Differential-Mode Impedance Extraction at the AC Input of a Motor Drive System

Arjuna Weerasinghe·Zhenyu Zhao·Fei Fan·Pengfei Tu·Kye Yak See
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Abstract

The in-circuit differential-mode (DM) impedance at the AC input of a motor drive system (MDS) serves as a key parameter to evaluate and estimate the DM electromagnetic interference (EMI) noise caused by the switching of power semiconductor devices in the MDS. This paper discusses a single-probe setup (SPS) with frequency-domain measurement to extract the in-circuit DM impedance of an MDS under its different operating modes. The advantages of the SPS are its non-contact measurement and simple structure.

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Arjuna Weerasinghe, Zhenyu Zhao, Fei Fan, Pengfei Tu, Kye Yak See. 2021-10-01. In-Circuit Differential-Mode Impedance Extraction at the AC Input of a Motor Drive System. https://arxiv.org/abs/2110.00208

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