Transformers Design Principles and Advanced FEM Analysis

The Norwegian Chapter and the Benelux Joint Chapter of the IEEE Power and Energy Society (PES)
invites you to the Distinguished Lecture

Transformers Design Principles and Advanced FEM Analysis

 Tuesday, November 24th 2020, 13:00-16:00 CET
 Wednesday, November 25th 2020, 13:00-16:00 CET


Prof. Shrikrishna V. Kulkarni, FINAE, FIEEE
Dean (Administrative Affairs) & Professor, Dept. Electrical Eng.
IIT Bombay, India

Webinar on Zoom (link will be sent by e-mail)

This tutorial starts with a typical design procedure of a power transformer (3-phase, 31.5 MVA, 132/33 kV), which covers broad electrical aspects involved in its design. In addition to describing important principles and operational aspects, step-by-step design procedure is elaborated starting with magnetic circuit followed by windings and insulation. After evaluating the leakage reactance by an approximate analytical formula, the losses in core, LV and HV windings and the parameters of the equivalent circuit of the transformer are determined.

Subsequently, conflicting requirements for various engineering aspects (electromagnetic, thermal, mechanical) of design are enumerated. Limits on design variables imposed by temperature rise considerations, manufacturing processes, and transport restrictions are highlighted. Some of the performance figures like eddy and stray losses in windings and structural parts cannot be accurately determined by analytical formulae, necessitating use of Finite Element Method (FEM) for the purpose.

Similarly, for determining response to transient overvoltages involving very high frequencies, detailed modeling of windings is essential. The equivalent circuit parameters for accurate transient analysis can be calculated using FEM. Basics of FEM formulations useful for design and analysis of transformers will be covered. Many complex phenomena in transformers involve interactions between electromagnetic fields and connected circuits and/or other physical fields (thermal, mechanical, fluid, and acoustic). A few case studies will be presented at the end which use coupled field computations in solving challenging problems encountered while designing and analyzing transformers.


Day 1Day 2
  • Design of a 31.5 MVA, 132/33 kV transformer
  • Design considerations for magnetic circuit
  • Eddy and stray losses
  • Short circuit strength of windings
  • Surge performance
  • Insulation design
  • Coupled field computations


You will receive an access link and additional instructions by e-mail the day before the seminar.

IEEE is the leading professional association for the advancement of technology. With over 400 000 members in more than 160 countries, IEEE is the world's largest technical professional society. The IEEE Power & Energy Society (PES) has the ambition to promote and share scientific knowledge about electrical power and energy. The Norwegian and Benelux PES chapters substantiate this ambition by arranging technical seminars.

The IEEE membership yearly fee is 171 USD + 35 USD for PES. New members are awarded 50 % discount in the first year. Students have reduced fees. Please visit the IEEE PES website for more information.

Any questions? Please don’t hesitate to contact the chairman Erick F. Alves 


Dr. S. V. Kulkarni is Professor in the Department of Electrical Engineering, Indian Institute of Technology Bombay. He was INAE (Indian National Academy of Engineering) Chair Professor in the Department for two years (April 2018 - March 2020). He is a Fellow of IEEE and INAE. He was Editor of IEEE Transactions on Power Delivery and IEEE Power Engineering Letters (2012-2019). He worked at Crompton Greaves Limited (1990-2001) and specialized in the design and development of transformers up to 400 kV class. He was a recipient of the Young Engineer Award conferred by INAE in 2000 for his contributions to Electromagnetic Field Computations and High Voltage Insulation Design in transformers. He was also honoured with the Career Award for Young Teachers from All India Council for Technical Education in 2001. He  received Best Paper Awards in international conferences on transformers held in 2002 and 2006.He has authored the book Transformer Engineering: Design, Technology, and Diagnostics, Second Edition, published by CRC Press in September 2012 and he received IIT Bombay Research Dissemination Award 2016 for the book. He has also written a chapter Challenges and Strategies in Transformer Design in the book Transformers: Analysis, Design, and Measurement published by CRC Press in June 2012. He has adapted an undergraduate text book on electromagnetics for Asia, Principles of Electromagnetics, Oxford University Press, published in October 2015.

His extensive interactions with transformer and power industries are reflected in his numerous consultancy projects. He has organized several training programs on transformers and computational electromagnetics for engineers from industries and academia in India. He has also set up the Field Computation Laboratory and the Insulation Diagnostics Laboratory in the Electrical Engineering Department at IIT Bombay.

He has more than 190 publications to his credit in reputed journals and conferences, and has two US patents. His current areas of research include Analysis and Diagnostics of Power Transformers, Advanced Electromagnetic and Coupled Field Computations, and Distributed Generation and Smart Grids.

For more information about Prof. Kulkarni, visit his home-page

The registration deadline has passed or the event is fully booked