Declare type of @variable (e.g. complex) in ModelingToolkit.jl

Specific Domains Modelling & Simulations
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Is there a way to declare the type of a variable in ModelingToolkit.jl? For example something like

@variables a(t)::complex

I’m excited to start with ModelingToolkit.jl having followed its development for a while. In my field (power systems) complex variables are ubiquitous and the model is a mixture between complex and real variables. I haven’t found a way to unambiguously declare a variable as complex. I tried to use the initial conditions that are passed the
ODEProblem but this doesn’t seem to work. I think it needs to be done before simplifying the model (structural_simplify).
The current behavior is also that some real variables are assumed complex.

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It’s coming fairly soon but you can’t at this moment.

2 Likes
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Thanks for the prompt reply.

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Greetings!

Apologies for bumping this old thread, is there any update on the use of complex variables in modelingtoolkit?

Looking forward.

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The stuff here was implemented, but it’s still early.