Faculty Directory

Contact Information

Atwater Kent Laboratories, 215
Phone: +1-508-831-5239
Fax: +1-508-831-5491

Alexander E. Emanuel

Energy is the magic manifestation that keeps us alive and warm. Energy keeps wheels turning, the sun shining, the hand writing, the earth spinning. I have dedicated my entire professional life to the study of energy-related problems, including the conversion of energy from one form to another. My primary focus has been in issues dealing with the quality of electrical energy. Some of the topics I continue to work on:

  • active filters that help limit harmonic pollution
  • the effect of voltage and current distortion on transformers, rotating machines, relays, and metering equipment
  • improved conditioning systems
  • the cost of harmonic pollution
  • the integration of alternative energy sources in distribution systems
  • using photovoltaic or double fed induction generators that simultaneously act like generators and active filters
  • tracking harmonic polluting systems

Teaching and advising are an important part of my life. Good teaching requires the mastery of the topics I teach, the knowledge of what my students know and need to learn, and, most important, enthusiasm. Teaching is a great responsibility and privilege. I see my students as budding engineers, as future colleagues. I make a point to develop in them the following basic skills: to study effectively, to respect society and the environment, to take responsibility for their ideas, to think a problem through, and then to clearly communicate that problem. These skills are tools for a lifetime.

I have always considered myself an amatuer sculptor.

Research Interests

  • power electronics
  • high-voltage technology
  • electromechanical devices
  • power systems
  • electromagnetic design


  • BS, Technion, Israel Institute of Technology - Israel, 1963
  • MS, Technion, Israel Institute of Technology - Israel,1965
  • D.Sc., Technion, Israel Institute of Technology - Israel, 1969

Featured Publications

  • A.E. Emanuel, Power Definitions and the Physical Mechanism of Power Flow, John Wiley, 2010
  • IEEE Std. 1459-2010, Standard Definitions for the Measurement of Electric Power Quantities Under Sinusoidal, Non-Sinusoidal, Balanced or Unbalanced Conditions, A.E. Emanuel, Chair.
  • A.E. Emanuel, “The Randomness Power: Another New Quantity to be Considered,” IEEE Transactions on Power Delivery, Vol. 22, No. 3, July 2007, pp. 1304-08.
  • K.J. Ferreira, A.E. Emanuel, “A Digitally Controlled Unity Power Factor Compensator for Pulse-Burst-Modulated Loads,” IEEE Transactions on Power Electronics, Vol. 25, No. 7, July 2010, pp. 1888-93.
  • G. Todeschini, A.E. Emanuel, “Wind Energy Conversion System as an Active Filter: Design and Comparisons of Three Control Systems,” IET Renewable Power Generation, Vol. 4, No.4, July 2010, pp. 341-53.

Professional Highlights

  • Author: Power Definitions and the Physical Mechanism of Power Flow, 2010
  • 1982: Board of Trustees Award for Outstanding Teaching.
  • 1986: Board of Trustees Award for Outstanding Research.
  • 1987 - 1990: George Ira Alden Professor of Engineering.
  • 1990: Myron Zucker Student-Faculty Grant.
  • 1992: Power Systems Instrumentation and Measurement Award for ANSI/IEEE Std. 120 (Chairman Working Group).
  • 1998: R.H. Lee Award for Exposing False Energy Saving Devices.
  • 1999: John Mungenast International Power Quality Award.
  • 2001: Board of Trustees Award for Outstanding Advising.
  • 2008: Chairman’s Exemplary faculty Prize.
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