Hi,

Why don't you just add the relevant formulae by hand into your model? Just adding the code by hand, without using any part of the library...

Like this:

model MyCircuit
  ... (stuff)
  Real integ_iv(start=0) "Integral over current and voltage at node X";
equation
  ...(stuff)
  der(integ_iv) = Submodel.Subsubmodel.p.i * Submodel.Subsubmodel.p.v ;
end MyCircuit;

to get an integration of current I had to cast current (a flow variable) as a Real, then Modelica was happy.


ex.

model simple
    Real IN,OUT;
    INT intx;
equation
    IN = vin.i;
    intx.u = IN;
    OUT = intx.y;
end simple;

--------------------------------------------------

block INT   
    parameter Real k = 1;
    Modelica.Blocks.Interfaces.RealInput    u;
    Modelica.Blocks.Interfaces.RealOutput     y(start = 0);

equation

    der(y) = k * u;
end INT;