Title :
Extracting the parameters of a common mode EMI equivalent circuit model for a drive inverter
Author :
Gong, Xun ; Ferreira, J.A.
Author_Institution :
Electr. Sustainable Energy, Delft Univ. of Technol., Delft, Netherlands
Abstract :
This paper proposes a general device-based common mode (CM) model for inverter-fed motor system that able to describe the CM conducted electromagnetic interference (EMI) propagating mechanism in the system. Numerical parameters are derived using impedance measurements. The procedure of model elements extraction is introduced systematically and is convenient to implement. The derived model makes the CM EMI characteristic of the inverter is deduced from a circuit analysis viewpoint. Variable EMI noise propagation paths are evaluated and impedances along the propagation loops inside the inverter can be reconstructed for better EMI suppression. The transfer ratio calculations under different conditions show good agreement with experimental measurements verifying the proposed modeling methodology.
Keywords :
electromagnetic interference; equivalent circuits; interference suppression; invertors; motor drives; CM conducted electromagnetic interference propagating mechanism; EMI suppression; Variable EMI noise propagation; device-based common mode EMI equivalent circuit model; impedance measurements; inverter-fed motor system; Capacitors; Electromagnetic compatibility; Electromagnetic interference; Electromagnetic modeling; Equivalent circuits; Impedance measurement; Inverters; Motor drives; Power system modeling; Semiconductor device noise; Electromagnetic compatibility (EMC); Electromagnetic interference (EMI); common mode modeling; elements extraction; motor drive;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5543356