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Dr. Ayman EL-Refaie
Dr. Ayman EL-RefaieMarquette University

Engineering Hall, 246

MilwaukeeWI53201United States of America
(414) 288-4471Electric Machines & Power Electronics at Marquette (EMPOWER)
Curriculum Vitae

Werner Endowed Chair in Secure/Sustainable Energy; Professor and Director of Graduate Studies

Electrical and Computer Engineering

Electric Machines & Power Electronics at Marquette (EMPOWER)
Google Scholar Page


Ph.D., 2005, Electrical and Computer Engineering, University of Wisconsin-Madison
M.S., 2002, Electrical and Computer Engineering, University of Wisconsin-Madison
M.S., 1998, Electrical Power and Machines, Cairo University 
B.S., 1995, Electrical Power and Machines, Cairo University

Research Interests

  • Electrical machines and drives
  • Power electronics
  • Power systems
  • Renewable energy
  • Hybrid/electrical traction applications
  • Aerospace applications
  • Oil and gas applications
  • Mining applications

Selected Recent Publications

P. B. Reddy, K. Grace and A. EL-Refaie, "Conceptual design of sleeve rotor synchronous reluctance motor for traction applications," in IET Electric Power Applications, vol. 10, no. 5, pp. 368-374, 5 2016.

Tsarafidy Raminosoa, Ayman EL-Refaie, Di Pan, Kum Kang Huh, James Alexander, Kevin Grace, Steven Galioto, Patel Reddy and Xiaochun Shen, “Reduced Rare-Earth Flux Switching Machines for Traction Applications” in IEEE Transactions on Industry Applications, vol. 51, no. 4, pp. 2959-2971, July-Aug. 2015.

A. M. EL-Refaie et al., "Advanced High-Power-Density Interior Permanent Magnet Motor for Traction Applications," in IEEE Transactions on Industry Applications, vol. 50, no. 5, pp. 3235-3248, Sept.-Oct. 2014. (This paper was designated as an IEEE-Industry Applications Society (IAS)/Electric Machines Committee First Prize Paper)

A. M. EL-Refaie, "Motors/generators for traction/propulsion applications: A review," in IEEE Vehicular Technology Magazine, vol. 8, no. 1, pp. 90-99, March 2013.

A.M. EL-Refaie, Manoj Shah, J.P. Alexander, S. Galitoto, Kum-Kang Huh, W.D. Gerstler, “Rotor End Losses in Multi-Phase Fractional-Slot Concentrated-Winding Permanent Magnet Synchronous Machines”, IEEE Transactions on Industry Applications, vol.47, no.5, pp.2066-2074, Sept.-Oct. 2011

A. M. EL-Refaie, "Fractional-Slot Concentrated-Windings Synchronous Permanent Magnet Machines: Opportunities and Challenges," in IEEE Transactions on Industrial Electronics, vol. 57, no. 1, pp. 107-121, Jan. 2010.

30 issued US patents with several others pending.

Quick Links


Dr. Majeed M. Hayat
Chair and Professor
(414) 288-6820

Ms. Katie Tarara
Office Associate
(414) 288-3518

Fax: (414) 288-3951


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