.Spot.ACdqo.Machines.Partials.Synchron3rdBase

Information

'Voltage behind synchronous reactance', simplified model of synchronous machine.
One winding in d-axis, q-axis, o-axis.
See also equivalent circuit on 'Diagram layer' of Parameters.Synchron3rd !

  v, i:          stator-voltage and -current dqo reference-system
  v_s, i_s:      stator-voltage and -current dqo rotor-system

The model is valid for reference systems with arbitrary angular orientation theta[2].

Voltage of field-winding:

Machine- and excitation model must use the same value for the (unscaled) field voltage Vf_nom,
as the machine model is stator-scaled with

  Vf_nom = V_nom

The magnetic flux Psi_pm of the permanent magnet (if present) is defined by

  Psi_pm = psi_pm*Psi_nom
  Psi_nom = V_nom/omega_nom = V_nom/(pp*w_nom)

  psi_pm = v_op/V_nom

The power angle is calculated if so desired. Note that for an inverter driven machine the power angle signal is oscillating with the source voltage.

  powerAngle:   difference (angle of rotor) - (angle of terminal_voltage)
                (> 0: generator, < 0: motor)