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High-frequency characterization of power wiring for modeling

The modeling of motor drive systems requires an accurate model for power wiring if high frequency effects are to be included. An analytical method for determining the frequency response of power wires or feeders connected from source to load is presented. The analysis determines the wire impedance as a function of frequency for several wire sizes for a frequency range of DC up to greater than 100 MHz. The results are intended to be used in a system simulation to analyze the effects of switching transients, load-induced harmonics, source induced harmonics, or applied frequencies higher than normal, as in variable frequency for aircraft electrical systems. The analysis method can be applied to DC, single-phase or three-phase wires, with shorted, open or other terminations.