.PowerSystems.AC1ph_DC.Machines.DCser

Information

The field (stator) winding and armature (rotor) winding are series-connected.
Contains in general compensation and commutation poles.
The parameter values l_q and r_q have to be interpreted differently for machines without and with compensation and commutation poles.

  - without:

  r_q = r_aq     resistance armature
  l_q = l_aq     inductance armature

  - with:

  r_q = r_aq + r_fq                    resistance armature plus compensation poles
  l_q = (l_aq - l_mq) + (l_fq - l_mq)  stray inductance of armature plus
                                       stray inductance of compensation poles

For pu input refer to the nominal (electrical) angular machine velocity pp*w_nom and use

  L_base = R_base/(pp*w_nom)

Determination of the mutual inductance L_md.
L_md depends on the winding ratio between armature and field winding

  L_md = (L_fd - Lsig_fd)*(n_a/n_f)

It can be determined in several ways,
  - using the above formula
  - using a constant K_E (back EMF)
  - solving the steady-state machine equations for L_md at nominal conditions. This method leads to

  L_md=(V_nom/I_nom - (R_fd + R_q))/(pp*w_nom)