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Impedance of Higher Harmonics

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Hello,
when I build a model using the Electroanalysis module and the AC Impedance Stationary study, I can get the impedance of the fundamental frequency using the elan.Zvsgrnd_els1 formula.
In case of a non-linear current response (for example Butler-Volmer with higher AC amplitudes) the current response is comprised of not only the fundamental frequency, but also of currents with harmonic frequencies (3w, 5w, ...).
I cannot find the definition of elan.Zvsgrnd_els1 anywhere in the Equation View, even though I am sure I have seen it before somewhere.

Is there a way to calculate the higher harmonic impedances? You basically just have to adjust the Fourier Analysis to extract the harmonic frequency instead of the fundamental, but I don't know how to implement this.

Any help is greatly appreciated.

0 Replies Last Post 5 dic 2015, 06:35 GMT-5
COMSOL Moderator

Hello Marco Balabajew

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