Analysis of Conducted EMI Emissions from PWM Inverters Based on Empirical Models and Comparative Experiments

Published

June 1, 1999

Author(s)

Huibin Zhu, Jih-Sheng Lai, Yi-hua Tang, Allen R. Hefner Jr., Celia Chen

Abstract

For the purpose of investigation of electromagnetic interference (EMI) mechanisms in PWM inverters, empirical models and comparative experiments were studied in both time and frequency domains.  Models of major circuit components including switching devices, passive components and interconnects were obtained with physics-based device modeling and time-domain reflectometry for parasitic measurement.  A full-bridge inverter model was then constructed with all empirical models included to study the fundamental mechanisms by which the EMI noises are excited and propagated.  With separation of common- and differential-mode EMIs, the simulation results were compared with actual experiments to verify the significance of parasitic elements and device switching in EMI mechanism.

Proceedings Title

Proc., 1999 Annual Power Electronics Specialist Conference

Conference Dates

February 1-4, 1999

Conference Location

Charleston, SC

Conference Title

1999 Annual Power Electronics Specialist Conference

Pub Type

Conferences

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Citation

Zhu, H. , Lai, J. , Tang, Y. , Hefner, A. and Chen, C. (1999), Analysis of Conducted EMI Emissions from PWM Inverters Based on Empirical Models and Comparative Experiments, Proc., 1999 Annual Power Electronics Specialist Conference, Charleston, SC, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=13691 (Accessed March 14, 2025)