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ACDC Frequency Domain simulation with two different frequencies

Posted 3 mai 2014, 13:02 UTC−4 Low-Frequency Electromagnetics Version 4.3b 2 Replies

Jose P
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Hello,

I am trying to simulate two resonance circuits using the ACDC Module. How can I simulate the system in the frequency domain considering that the voltage sources of the two respective circuits have to operate at their respective resonant frequencies?

As I understand, the frequency domain simulation of COMSOL imposes the same frequency on both the circuits but I need the voltage sources of the two respective circuits have to operate at their respective resonant frequencies.

Any help would be much appreciated.
2 Replies Last Post 6 mai 2014, 10:24 UTC−4
Dennis Brown
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Posted: 1 decade ago 6 mai 2014, 08:58 UTC−4
In comsol, if using frequency domain, you can only sweep a source or use one frequency at a time. You have a bit more flexibility if using the time domain analysis because you can use 'N' different freqs but you have to take into consideration simulation time if those 'N' freqs are far apart. If you are truly simulating just circuits, you would be better off using LTspice, which is free s/w.
In comsol, if using frequency domain, you can only sweep a source or use one frequency at a time. You have a bit more flexibility if using the time domain analysis because you can use 'N' different freqs but you have to take into consideration simulation time if those 'N' freqs are far apart. If you are truly simulating just circuits, you would be better off using LTspice, which is free s/w.
Jose P
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Posted: 1 decade ago 6 mai 2014, 10:24 UTC−4
Hi Dennis,

Thanks for your reply.

I have made a few more assumptions in my model in order to handle the fact that only one frequency can be swept at a time. Time domain is too tedious and time and resource consuming!

Also, thanks for your suggestion to use LTSpice but I can't use it here because I am also studying magnetic field interactions.

Cheers!

Hi Dennis, Thanks for your reply. I have made a few more assumptions in my model in order to handle the fact that only one frequency can be swept at a time. Time domain is too tedious and time and resource consuming! Also, thanks for your suggestion to use LTSpice but I can't use it here because I am also studying magnetic field interactions. Cheers!

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