Frequency-domain simulation with N-Port networks in PySpice

[VictorDosSantos]

Hello PySpice developers,

I’m currently working on simulating electrical networks and I have a question regarding PySpice’s capabilities for frequency-domain simulations.

Would it be possible to simulate an electrical network where the passive linear components are represented as N-Port networks, and the active components (such as current, voltage sources, power converters) are modeled as frequency-domain sources?

I’m interested in knowing whether PySpice can handle such a configuration and, if so, how to approach this type of simulation.

Thanks in advance for your help!

[Kreijstal]

Pyspice is a wrapper for ngspice, whatever ngspice can do... mostly.

[VictorDosSantos]

Thank you for your response!

I understand that PySpice is a wrapper for ngspice. What I meant to ask is whether ngspice itself supports frequency-domain simulations where passive linear components are represented as N-Port networks and active components are modeled as frequency sources (voltage or current sources).

Does ngspice have the capability to handle such simulations, and if so, how would you recommend setting this up?

Maybe it would be more appropriate to ask this question on an ngspice forum?

Thanks again!

[Kreijstal]

I can say you can definitely use subcircuits to model the n- ports. You would just use a voltage in ac mode, and do an ac simulation that much it can do... so I would say, sure.

[tapegoji]

If I understand you correctly, you are looking for .AC analysis in spice. Yes ngspice and hence PySpice can support it. However, You need to know that the circuits are LTI (Linear Time Invariant) and hence you can't have multiple ac frequency excitation in the .ac analysis.