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

  title={In-Circuit Differential-Mode Impedance Extraction at the AC Input of a Motor Drive System},
  author={Arjuna Weerasinghe and Zhenyu Zhao and Fei Fan and Pengfei Tu and Kye Yak See},
  journal={2021 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)},
  • Arjuna Weerasinghe, Zhenyu Zhao, +2 authors K. See
  • Published 27 September 2021
  • Engineering, Computer Science
  • 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)
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… 

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