Multiconductor cable modeling for EMI simulations in power electronics

Reliable simulations of electromagnetic interference (EMI) in power electronic systems ask for accurate models of long power electronic cables. A methodology for creating frequency dependent circuit models of long cables is presented in this paper. It is based on the techniques developed and used for modeling VLSI interconnects and PCB transmission lines in packaging and microwave engineering. A measurement procedure for characterizing experimentally the power cables is explained in detail. Stable, causal, and passive equivalent circuits are then extracted and verified by comparing the simulation results with frequency- and time-domain measurements.

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