Shesha Jayaram Professor, Ph. D.

Office

University of Waterloo
Department of Electrical and Computer Engineering
200 University Avenue West
Waterloo, Ontario N2L 3G1
CANADA

Centre for Environmental Information Technology (EIT) 3105
Phone: 519-888-4567 ext. 35337
E-mail: jayaram@ecemail.uwaterloo.ca

Research

• Areas:
• Analysis or Conduction and Breakdown Mechanisms in Insulating Materials under HV Stress.
• Use of Partial Discharge and other High Frequency Components as Diagnostic Tools for Insulation Failure Analysis.
• High Voltage Engineering Applications to Industrial Processes, and Development of Power Supplies.
• High Voltage Testing Techniques.
• Pulse Power Applications to Electrostatics Problems.
• 
  Collaborations:
• General Electric, Peterborough: High voltage coil insulation for large motors and generators.
• University of Western Ontario: Adjunct Professor, 1992-present. Have been working with Prof. Castle in Applied Electrostatics area and co-supervised Rachel Feng for her M.A.Sc Thesis work.
• University of Guelph: "Development of non-thermal sterilization methods using Pulse Power Application", NSERC Strategic Grant 1999-2002.
• McMaster University: "Control of particulate contamination, mercury and other trace elements in coal combustion flue-gas by advanced electrostatic precipitation techniques", NSERC Strategic Grant 1994-97, nd ESTAC Grant 1997-99, NSERC CRD matching fund, 1999-2000.
• EACH Engineering Inc.: With Dr. Edward Cherney's collaboration the area of polymeric insulation has been developed to a great extent at the University of Waterloo, where Dr. Cherney is appointed as an adjunct professor.
• Toyohashi University of Technology, Japan: Involved in co-supervising two graduate students with Profs. Kosaki and Nagao in the area of cryogenics and polymeric composite insulation system at TUT during my sabbatical.
• Royal Institute of Technology (KTH), Sweden: Involved in co-supervision of Hans Edin, a Ph.D. student with Dr. Uno Gafvert, and Professor Roland Erisksson, during my sabbatical.
• FES (Adwel3) International Ltd.: Have been supervising Testing of Generator Couples manufactured by FES (Adwel) International Ltd. Scarborough, Ontario.

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Recognition

• Swedish Government Fellowship: TFR Visiting Professor Program, "Women in Engineering Sciences" Fellowship - 770,000 SEK, 1999.
• Japanese Government Fellowship: Ministry of Education, Science, Sports, and Culture - 6,500,000 Yen, 1998/99.
• The 1998 State Award (Gold Medal) from Karnataka State, India - for contributions to Science & Technology Development.
• Member, NSERC Electromagnetics and Electrical Systems Grant Selection Committee, September 2000-July 2003.

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Graduate Students Supervision

• Doctoral Students Supervision
• Fermin Espino, "Stress Grading Materials Evaluation and Performance", Ph.D., since Fall 2002.
• Saeed Ul-Haq, "Inverter Fed Motors' Insulation Problems", Ph.D., since Fall 2003.
• Ayman El-Hag, "Leakage Current Harmonics as a Diagnostic Tool to Aging Performance of Silicone Rubber Insulators", Ph.D., November 2003.
• Luiz Meyer, "A Study of the Role of Filler in Silicone Rubber Compounds for Outdoor Insulation", Ph.D., November 2003.
• Ivan Lopes, "Diagnosing Aging of Silicone Rubber Insulation Using Partial Discharge Characteristics", Ph.D., December 2001.
• Kannan Sreenivasachar, "Unified Power Flow Controller: Modeling, Stability Control Strategy, and Control System Design" (Co-supervisor Prof. Salama), Ph.D. June 2001.
• Piotr Lubicki, "Application of High Voltage Technology for Water Purification", Ph.D., June 1998.
• 
  Master Students Supervision
• Rocket Wei, "Stress Grading by Resistive Coatings", M. A. Sc., April 2004.
• Li Feng, "Corona Ring Design Around the Line End for EHV Insulators", Part-time M. A. Sc., April 2004.
• Ying Shen, "Stress Grading by High Permittivity Materials",M. A. Sc., August 2003.
• Ramtin Omranipour, "Design Aspects for Tracking Wheel in  Outdoor Insulation Studies", M. A. Sc., 2002.
• Hongyuan Wang,  "Numerical Computation of Corona Space Charge and V-I characteristics of ESP",  M.A.Sc., 1999.
• Behdad Biglard, "Salt-fog Testing of Polymer Housed Surge Arresters", M.A.Sc, 1999.
• Xinghua Liang, "The Study of Pulse Energization of ESPs",  M.A.Sc., 1998.
• S. Muramatsu, "High Field Dielectric Loss Measurements in Liquid Nitrogen", M. A. Sc., 1998 (Main Supervisor Prof. Nagao).
• M. Sugio, "Breakdown characteristics of air-polymers and Oil-polymers composite insulation systems", M. A. Sc, 1998 (Main Supervisor Prof. Nagao).
• Marius Chis, "Dynamics of Vector-Controlled Induction Machine Drives Fed from Non-linear Voltage Sources", M.A.Sc, 1997.
• Xin Xu, "Noise Reduction in Twisted Pair Multiconductors",  M. A. Sc, 1996 (Main Supervisor Prof. S. Nitta).
• Rongqiong Feng, "Power Measurement under Pulsed High Voltage", M. A. Sc, 1996, (Main Supervisor G. S. P. Castle).
• Hongbing Wu, "Mechanism of Charge Generation and Relaxation in Insulating Liquids during Forced Flow", M. A. Sc, 1995.
• Xiao-yu Xu, "Breakdown Probability of SF6 gas in Uniform Fields Under Nanosecond Pulse Application", M. A. Sc, 1995.

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Post Graduate Fellows and Visiting Professors* Supervision

• Sima Xainghu*, "Non-Ceramic Insulator for Outdoor Applications", October 2003 - April 2004.
• Chaim Leibovitch*, "Pulse Power Applications for Industrial Processes", September 2002 - August 2003.
• Kamesawara Rao*, "Pulse Power Applications for Food Sterilization", September 2000 - August 2001.
• Al-Arainy*, "Pulse Corona for Removing Volatile Impurities from Drinking Water", July 1995 - October 1995.
• Goran Djogo, "Power Supply for Advanced Electrostatic Precipitators and Water Purification System", March 1995 - 1996.
• Hongbing Wu, "Pulse Corona for Removing Volatile Impurities from Drinking Water", September 1995 - October 1995.
• Thangaraj Dravia, "Numerical Solutions for Applied Electrostatics Problems", July 1994 - October 1994.
• * - Visiting professors who spent their sabbatical working with Prof. Jayaram on the projects under her supervision.

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Publications

• Papers in Refereed Journals
• ^SA = Student Author
• L. Meyer^SA, S. Jayaram, and, E. A. Cherney, “Simultaneous measurement of dray band arcing energy and its harmonics and temperatures on inclined plane test", IEEE Trans. on Dielectrics and Electr. Insul, June 2003 (In Press).
• L. Meyer^SA, S. Jayaram, and, E. A. Cherney, “Thermal conductivity of filled silicone rubber and its relationship to erosion resistance in the inclined plane test", IEEE Trans. on Dielectrics and Electr. Insul, July 2003 (In Press).
• A.H. El-Hag^SA, S. Jayaram and E.A. Cherney, "Fundamental and Low Frequency Harmonic Components of Leakage Current as a Diagnostic Tool to Study Aging of RTV and HTV Silicone Rubber in Salt-Fog" IEEE Transaction on Dielectrics and Electrical Insulation, Vol. 10, No. 1, February 2003, pp. 128-136.
• A.H. El-Hag^SA, S. Jayaram and E.A. Cherney "Influence of Shed Parameters on the Aging Performance of Silicone Rubber Insulators in Salt-Fog", IEEE Transaction on Dielectrics and Electrical Insulation, Vol. 10, No. 4, August 2003, pp. 655-664.
• I. Lopes^SA, S. Jayaram, E. A. Cherney "A Method for Detecting the Transition from Corona from Water Droplets to Dry-band-Arcing on Silicone Rubber Insulators", IEEE Trans. on Diele. & Electr. Insul, Vol. 8, No. 6, Dec. 2002, pp. 964-971.
• X. Liang^SA, S. Jayaram, J. S. Chang, P. C. Looy, and A. A. Berezin, “Mercury and trace toxic elements removal characteristics of wire-plate type electrostatic precipitator”, IEEE Trans. on Ind. Appl., Vol. 38, No. 1, Jan/Feb. 2002, pp. 69-76.
• E. A. Cherney, B. Biglar^SA, and S. Jayaram, “Salt fog testing of polymer housed surge arresters”, accepted for publications in the IEEE Power Engineering Society (PES) Transactions on Power Delivery, Vol. 16, pp. 252-259, 2001.
• S. Jayaram, “Sterilization of liquid foods by pulsed electric fields”, IEEE Electrical Insulation magazine, Vol. 16, pp. 17-25, Nov./Dec. 2000.
• S. Jayaram, X. Xu^SA and J. D. Cross, “High divider ratio fast response capacitive dividers for high voltage pulse measurements”, IEEE Transactions on Ind. Appl., Vol. 36, pp. 920-922, 2000.
• P. Lubicki^SA, J. D. Cross and S. Jayaram, “Removal of volatile organic compounds in water using low energy electron beam”, IEEE Trans. on Diele. & Electr. Insul., Vol. 5, pp. 219-224, 1998.
• R. Feng^SA, G. S. P. Castle and S. Jayaram, “Automated system for power measurement in silent discharge”, IEEE Trans. on Ind. Appl., Vol. 30, pp. 563-568, 1998.
• P. Lubicki^SA and S. Jayaram, “High voltage pulse application for destruction of Yersinia enterocolitica gram negative bacteria”, Bioelectrochemistry and Bioenergetics, Vol. 5153, 1997.
• H. Wu^SA and S. Jayaram, “DC field effects on streaming electrification in insulating oils”, IEEE Trans. on Dielectrics and Electr. Insul., Vol. 3, pp. 499-506, 1996.
• X. Xu^SA, S. Jayaram and S. A. Boggs, “Prediction of breakdown in SF6 under impulse conditions”, IEEE Trans. on Dielectrics and Electr. Insul., Vol. 3, pp. 836-842, 1996.
• S. Jayaram, "Effect of streaming potential on heat transfer in transformer oils”, IEEE Trans. on Dielectrics and Electr. Insul., Vol. 3, pp. 410-416, 1996.
• S. Jayaram, G. S. P. Castle, J. S. Chang, A. A. Berezin, P. Looy, R. Mangal and M. Mozes, “Semi-pilot plant pulse energized cold-precharger ESP tests for collection of moderately high resistivity flyash particles”, IEEE Trans. on Ind. Appl., Vol. 32, pp. 851-857, 1996.
• S. Jayaram, J. D. Cross and E. Weckman, "Electrokinetic study in non-polar liquids by laser Doppler anemometry", J. Electrostatics, Vol. 34, pp. 1-16, 1995.
• Patents
• K. L. Rao and S. Jayaram, “Treatment Chamber for Non-thermal Pasteurization of Liquid Foods using Pulsed Electric Field”, Patent is filed.
• L. Meyer^SA, S. Jayaram, and, E. A. Cherney, “A New Method to Evaluate Erosion in Filled Silicone Rubber by Employing Laser”, Disclosure signed, May 2003.
• Invited Talks
• S. Jayaram, “Overview of Research in Insulation and High Voltage Engineering” at UW, TUT, Toyohashi, Japan, Jan. 1999.
• S. Jayaram, “Pulse energization of ESPs for air pollution cleaning”, Yamagata University, Yamagata, Japan, February 1999.
• S. Jayaram, “Seminar series consisting of the topics; High field pulse sterilization of liquid foods, Pulse energization of ESPs for air pollution cleaning. Pulse energization of ESPs for air pollution cleaning, on High Voltage Engineering Applications” was given at the Royal Institute of Technology, Stockholm, Sweden, December 1999.
• S. Jayaram, “Applications of High Voltage to Industrial Processes”, Key-Note Speaker, at the Second National Meeting of High Voltage Laboratories, Belo Horizonte, Minas Gerais, hosted by Universidade Federal de Minas Gerais, Brazil, 1997.
• S. Jayaram, “Streaming electrification in power transformers”, presented at Mechanical Systems Engineering, Tokyo University of Agriculture & Technology, Tokyo, Japan, Sept. 20th, 1995.
• S. Jayaram, “Pulse power energization of electrostatic precipitators for air pollution cleaning”, presented at IEEE EMC Tokyo Chapter, Kashizawaki, Niigata, Japan, November 17th, 1995.
• S. Jayaram, “High voltage pulse sterilization of liquid foods”, presented at Institute of Electrical Engineers, Japan, Nagoya, Japan, December 7th, 1995.

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