As far as I've seen, none of the open source spice tools support more advanced simulation types like periodic steady state, or did I just not look well enough? I'm interested in working on stuff like that, but at this point I just need to study all the bits a lot more. Would be very unfortunate to write such a thing for Xyce and not have it upstream, or contribute to ngspice when it turns out there are better simulators.
10/07/2020, 1:22 PM
Ngspice supposedly has PSS but in development phase. Xyce has harmonic balance. But I haven't used either so idea how good the implementations are