.Spot.Base.Precalculation.Tsig_xsig

Information

Calculates rotor leakage reactance xsig and corresponding time constants Tsig.

If transient order n > 3, the coefficients xm[2:n-2] are assumed to be 0.
A different choice is not meaningful, as long as we only have 2 parameters (complex field-current) to fit.

Interface

function Tsig_xsig
  extends Icons.Function;
  input Integer n "transient order";
  input Real[n] ac "polynome coefficient closed loop";
  input Real[n] ao "polynome coefficient open loop";
  input SIpu.Reactance xsig_s(unit = "pu") "leakage reactance stator";
  input SIpu.Reactance[n + 1] xm(unit = "pu") "coupling reactance";
  input Boolean field "field winding yes/no";
  input Real tol "tolerance, iterative solution";
  output SI.Angle[n] Tsig "sig-time constants";
  output SIpu.Reactance[n] xsig(unit = "pu") "leakage reactance rotor";
  output Boolean result "true if Tsig real and convergence tol-ok";
end Tsig_xsig;

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