.PowerSystems.AC3ph.Transformers.TrafoSat

Information

Stray-impedance and resistance, with non-ideal magnetic coupling, i.e. non-zero magnetisation current, eddy current losses and saturation.
Delta topology: impedance is defined as winding-impedance (see info package Transformers).

SI-input: values for stray and coupling impedances are winding dependent.

  r[k]   = R[k]
  x[k]   = omega_nom*L[k]
  x0[k]  = omega_nom*L0[k]
  redc   = Redc
  xm     = omega_nom*Lm
  xm_sat = omega_nom*Lm_sat, saturation value of inductance
  psi_sat, pu saturation value of flux (no SI-value!)

pu-input: values for stray and coupling impedances are winding-reduced to primary side.

  r[k]   = R[k]/R_nom[k]
  x[k]   = omega_nom*L[k]/R_nom[k]
  x0[k]  = omega_nom*L0[k]/R_nom[k]
  redc   = Redc/sqrt(R_nom[1]*R_nom[2])
  xm     = omega_nom*Lm/sqrt(R_nom[1]*R_nom[2])
  xm_sat = omega_nom*Lm_sat/sqrt(R_nom[1]*R_nom[2]), saturation value of inductance
  psi_sat, pu saturation value of flux

with

  R_nom[k] = V_nom[k]^2/S_nom,  k = 1(primary), 2(secondary)

Saturation needs high-precision integration!