functionbaseTrafoRL

Base resistance and inductance transformers

Extends from Icons.Function (Function icon).

Information

Calculates transformer base-resistance and -inductance depending on the choice of units (first index: primary, secondary, second index: R, L).
The secondary side is winding-reduced to the primary, as the equations are written in reduced form.

"pu": 

  RL_base = [V_nom[1]^2/S_nom          ] * [1, 1/omega_nom]
           [(V_nom[2]^2/S_nom)/W_nom^2]
"SI": 
  RL_base[k] = [1        ] * [1, 1/omega_nom]
              [1/W_nom^2]

The winding ratio W_nom is given by the nominal voltages: 

  W_nom = V_nom[2]/V_nom[1]

Inputs

TypeNameDefaultDescription
Base.Types.UnitsunitsSI or pu
SI.VoltageV_nomnom voltage {prim, sec} or {prim, sec1, sec2}
SI.ApparentPowerS_nomapparent power
SI.AngularFrequencyomega_nomangular frequency

Outputs

TypeNameDefaultDescription
RealRL_basebase [prim res, prim ind; sec res, sec ind] or [prim res, prim ind; sec1 res, sec1 ind; sec2 res, sec2 ind]