• Brushless doubly fed induction machine as a variable frequency transformer 

      Abdel-Khalik, A. S.; Elserougi, A.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2012 , Conference Paper)
      Variable frequency transformer (VFT) has been recently used as an alternative to HVDC to control power flow between asynchronous networks. VFT consumes less reactive power than a back-to-back HVDC system, provides faster ...