• Nine-Phase Armature Windings Design, Test, and Harmonic Analysis 

      Jordan, H.E; Zowarka, R.C.; Pratap, S.B. (IEEE, 2005-05)
      A nine-phase armature winding was developed for a large generator. Alternative methods for interconnecting the pole-phase groups were examined. An alternate-pole connection scheme was adopted and a prototype induction motor ...