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## which study is applicable if AC current is used in the geometry.

Posted Jan 18, 2021, 4:55 AM EST Electrical, AC/DC & Electromagnetics Version 5.5 3 Replies

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Hello, I am solving a problem of 2D geometry using comsol for impedance measurement. I have inserted 16 arcs equidistantly placed forming a circular geometry. I need to find the voltage values by giving an AC current of 1mA with 50 Hz frequency to two arcs and measure the voltage at all other arcs successively. Then again move the current to next two arcs and measure the voltage at all other arcs. This procedure is continued till all the arcs are given the ac current and voltage is measured. The AC current is given through arc 0 and 1 and the potential voltages are measured across the other 13 arc pairs 2-3, 3-4, . . . and 14-15. This is first projection. In the second projection current is injected through arc1 and arc2 and the voltages are measured across the other 13 arc pairs 3-4, 4-5, . . . And 15-0. And so on. Like this total 16 projections and 13 readings in each projection. I have to tabulate (and plot) these readings in a file for further processing. Which study I should use? Frequency domain, Stationary or Time Dependant study? (Since AC current is given) Since current is applied subsequently to all the arcs and voltage is measured in each projection. Do I need to change the position of input current source to the arcs manually in each projection? If it is possible to generate all the voltage value table of 16 projections and 13 readings by computing the study once, then how it is done? Please do the needful. Thanks.