Giri Venkataramanan


2554 Engineering Hall
1415 Engineering Drive
Madison, WI 53706

Ph: (608) 262-4479
Fax: (608) 262-5559



  • B. E. Government College of Technology, Coimbatore, India, 1986
  • M.S. Caltech, 1987
  • Ph.D. University of Wisconsin-Madison, 1992

Research Interests

  • electrical power conversion
  • AC power flow control
  • design of power converters
  • distributed generation
  • power converter architecture
  • power converter packaging


  • [6]G. Venkataramanan, B. K. Johnson and A. Sundaram, \" An AC-AC Power Converter for Custom Power Applications\", IEEE Transactions on Power Delivery, July 1996.
  • [5]W. Kellogg, H. Nehrir, G. Venkataramanan, V. Gerez, \" Optimal Unit Sizing for a Hybrid Wind/Photovoltaic Generating System\", Electrical Power Systems Research Journal, Vol. 39, No.2, 1996, Lausanne, Switzerland.
  • [4]B. Milkovska, G. Venkataramanan, H. Nehrir and V. Gerez, \"Variable Speed Operation of Permanent Magnet Alternator Wind Turbines Using a Single Switch Power Converter\", ASME Journal of Solar Engineering, Special Issue on Wind Energy, Nov. 1996.
  • [3]G. Venkataramanan and B. K. Johnson, \" A Pulse Width Modulated Power Line Conditioner for Sensitive Load Centers\", IEEE Transactions on Power Delivery, May 1997.
  • [2]W. Kellogg, H. Nehrir, G. Venkataramanan, V. Gerez, \"Generation Unit Sizing and Cost Analysis for Stand Alone Wind, Photovoltaic and Hybrid Wind/Photovoltaic Systems\", IEEE Transactions on Energy Conversion, March 1998.
  • [1]B. K. Johnson and G. Venkataramanan, \" A Hybrid Solid State Phase Shifter Using PWM AC-AC Converters\", IEEE Transactions on Power Delivery, Oct 1998


Profile Summary

The horseshoe, the water wheel, the windmill, the steam engine ... systems for energy transport and power conversion have always been at the forefront of human imagination. Rooted in that tradition, modern electrical power converters have evolved through the interplay of historical, social, environmental and technological factors, among others. We use careful empirical study, reinforced with analytical modeling to elucidate the role of these factors in determining the shape and form of electrical power converters. Thus, we are able to optimize power converter systems for the future. Our research program covers the major aspects of electrical power conversion systems in different application areas including information processing, industrial drives and processes, and utility power distribution. Specific research projects focus on characterization of power semiconductor devices and components, development of novel power converters and control strategies, physical realization and packaging, mitigation of converter-induced harmonics, and control of electromagnetic interference.

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