Research Areas

⇒ Comutational Electromagnetics

⇒ Coupled circuit-field formulation

⇒ Magneto-structural formulation

⇒ Magneto-thermal formulation

⇒ Transformer Modeling and Analysis using Reluctance Networks and Finite Element Method

⇒ Transformer Design and Diagnostics

Publications

⇒ International Journals

1. D. A. Koppikar, S. V. Kulkarni, S. A. Khaparde, and S. K. Jha, "Evaluation of eddy losses due to high current leads in transformers," IEE Proceedings - Science, Measurement and Technology, Vol. 144, No. 1, January 1997, pp. 34-38.
2. D. A. Koppikar, S. V. Kulkarni, S. A. Khaparde, and B. Arora, "A modified approach to overfluxing analysis of transformer," International Journal of Electrical Power & Energy Systems, Vol. 20, No. 4, 1998, pp. 235-239
3. D. A. Koppikar, S. V. Kulkarni, G. Ghosh, S. M. Ainapure, and J. S. Bhavsar, "Circulating current loss in transformer windings," IEE Proceedings - Science, Measurement and Technology, Vol. 145, No. 4, July 1998, pp. 136-140.
4. D. A. Koppikar, S. V. Kulkarni, P. N. Srinivas, S. A. Khaparde, and R. Jain, "Evaluation of flitch plate losses in power transformers," IEEE Transactions on Power Delivery, Vol. 14, No. 3, July 1999, pp. 996-1001.
5. D. A. Koppikar, S. V. Kulkarni, and J. Turowski, "Fast 3-D interactive computation of stray field and losses in asymmetric transformers," IEE Proceedings-Generation, Transmission and Distribution, Vol. 147, No. 4, July 2000, pp. 197-201.
6. M. U. Nabi, V. R. Sule, and S. V. Kulkarni, "An efficient computational modelling and solution scheme for repeated finite element analysis of composite domains with varying material property," International Journal of Computational Engineering Science, Vol. 3, No. 3, 2002, pp. 257-275.
7. J. C. Olivares, S. V. Kulkarni, J. Canedo, J. Driesen, and R. Escarela, "Impact of joint design parameters on transformer losses," International Journal of Power and Energy Systems, Vol. 23, No. 3, 2003, pp. 151-157.
8. J. C. Olivares, R. Escarela-Perez, S. V. Kulkarni, F. De Leon, E. Melgoza, and O. Hernandez, "Improved insert geometry for reducing tank wall losses in pad-mounted transformers," IEEE Transactions on Power Delivery, Vol. 19, No. 3, July 2004, pp. 1120-1126.
9. S. V. Kulkarni, Discussion of "Reducing losses in distribution transformers," IEEE Transactions on Power Delivery, Vol. 18, No. 4, October 2003, pp. 1593-1594.
10. M. Nabi, S. V. Kulkarni, and V. R. Sule, "A novel modeling and solution approach for repeated finite element analysis of eddy current systems," IEEE Transactions on Magnetics, Vol. 40, Issue 1, January 2004, pp. 21-28.
11. J. C. Olivares, R. Escarela-Perez, S. V. Kulkarni, F. De Leon, and M. A. Venegas-Vega, "2-D finite-element determination of tank wall losses in pad-mounted transformers," Electric Power Systems Research, Vol. 71, 2004, pp. 179-185.
12. S. V. Kulkarni, J. C. Olivares, R. Escarela-Perez, V. K. Lakhiani, and J. Turowski, "Evaluation of eddy losses in cover plates of distribution transformers," IEE Proceedings - Science, Measurement and Technology, Vol. 151, No. 5, September 2004, pp. 313-318.
13. M. Nabi, S. V. Kulkarni, A. K. Gupta, and G. B. Kumbhar, "An improved finite element computational scheme for transient field-circuit coupled systems," International Journal of Computational Methods in Engineering Science and Mechanics, Vol. 7, No. 4, July-August 2006, pp. 313-322.
14. G. B. Kumbhar, S. V. Kulkarni, and V. S. Joshi, "Analysis of half-turn effect in power transformers using nonlinear-transient FE formulation," IEEE Transactions on Power Delivery, Vol. 22, No. 1, January 2007, pp. 195-200.
15. G. B. Kumbhar and S.V. Kulkarni, "Analysis of short circuit performance of split-winding transformer using coupled field-circuit approach," IEEE Transactions on Power Delivery, Vol. 22, No. 2, April 2007, pp. 936-943.
16. G.B. Kumbhar, S.V. Kulkarni, R. Escarela-Perez, and E. Campero-Littlewood, "Applications of coupled field formulations to electrical machinery," The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 26, Issue 2, 2007, pp. 489-523.
17. S. D. Kore, P. P. Date, and S. V. Kulkarni, "Effect of process parameters on electromagnetic welding of Al sheets" International Journal of Impact Engineering, Vol. 34, Issue 8, 2007, pp. 1327-1341.
18. R. Escarela-Perez, S. V. Kulkarni, N. K. Kodela, and J.C. Olivares-Galvan, "Asymmetry during load-loss measurement of three-phase three-limb transformers," IEEE Transactions on Power Delivery, Vol. 22, No. 3, July 2007, pp. 1566-1574.
19. K. C. Hari, M. Nabi, and S. V. Kulkarni, "Improved FEM Model for defect shape construction from MFL signal by using genetic algorithm," IET Proceedings - Science, Measurement and Technology, Vol. 1, No. 4, July 2007, pp. 196-200.
20. R. S. Bhide, G. B. Kumbhar, S. V. Kulkarni, and J. P. Koria, "Coupled circuit-field formulation for analysis of parallel operation of converters with interphase transformer," Electric Power Systems Research. Vol. 78, Issue 1, January 2008, pp 158-164.
21. S. D. Kore, P. P. Date, and S. V. Kulkarni, "Electromagnetic Impact Welding of Aluminum to Stainless Steel Sheets," Journal of Materials Processing Technology, Vol. 208, 2008, pp. 486-493.
22. R. Escarela-Perez, S. V. Kulkarni, J. Alvarez-Ramirez, and K. Kaushik, "Analytical Description of the Load-Loss Asymmetry Phenomenon in Three-Phase Three-Limb Transformers," Accepted for publication in IEEE Transactions on Power Delivery.
23. R. Escarela-Perez, S. V. Kulkarni, and E. Melgoza , "Multi-Port Network and 3D Finite-Element Models for Accurate Transformer Calculations: Single-Phase Load-Loss Test" Accepted for publication in Electric Power Systems Research.

⇒ International Conferences

1. S. V. Kulkarni, G. S. Gulwadi, R. Ramachandran, and S. Bhatia, "Accurate estimation of eddy loss in transformer windings by using FEM analysis," TRAFOTECH-94, International Conference on Transformers, Bangalore, 20-21 January 1994, pp. I7 - 10.
2. S. V. Kulkarni, "Influence of system operating conditions on magnetizing inrush current of transformer," TRAFOTECH-94, International Conference on Transformers, Bangalore, 20 - 21 January 1994, pp. VI 19 - 23.
3. A. S. Nene, S. V. Kulkarni, and K. Vijayan, "Asymmetrical magnetizing phenomenon of 3-phase core type transformers," TRAFOTECH-94, International Conference on Transformers, held at Bangalore, 20 - 21 January 1994, pp. IV 21 - 26.
4. S. V. Kulkarni and B. Ramachandrudu, "Orthogonal array design of experiments for analysis of key performance parameter of transformer," First World Congress for Total Quality Management organised by Sheffield Hallam University and Royal Statistical Society, Sheffield, United Kingdom, 10-12 April 1995, pp. 201 - 204.
5. D. A. Koppikar, S. V. Kulkarni, and J. Turowski, "Industrial verification of 3-D hybrid analytically numerical calculation of stray field and losses in 3-phase power transformers," ISEF\u20131995, International Symposium on Electromagnetic Fields, Thessaloniki, Greece, 25-27 September 1995, pp. 345-348.
6. P. S. Mashelkar and S. V. Kulkarni, "Value engineering on 315 MVA, 400/220/33 kV auto transformer," INVEST-96, International Conference on Value Engineering, Jamshedpur, 15-16 November 1996.
7. D. A. Koppikar, S. V. Kulkarni, and A. K. Dubey, "Optimization of EHV transformer insulation by statistical analysis," ISH'97, International Symposium on High Voltage Engineering, Montreal, 25-29 August 1997, Vol. 6, pp. 289-292.
8. G. Zwolinski, J. Turowski, S. V. Kulkarni, and D. A. Koppikar, "Method of fast computation of 3-D stray field and losses in highly asymmetric transformers," TRAFOTECH'98, International Conference on Transformers, held at Mumbai 23-24 January 1999, pp I 51-58.
9. S. V. Kulkarni and S. A. Khaparde, "Stray loss evaluation in power transformers - a review," IEEE PES Winter Meeting 2000, Singapore, January 2000, Paper no. 0-7803-5938-0/00.
10. S. V. Kulkarni, "Advanced FEM analysis for reliability enhancement of transformers," Third International R & D Conference 2000, Jabalpur, India, March 2000, pp. 390-395.
11. S. V. Kulkarni, S. Palanivasagam, and M. Yaksh, "Calculation of circulating current loss in transformer windings using FE Analysis," ANSYS Users Conference, Pittsburgh, USA, August 27-30, 2000.
12. V. K. Lakhiani and S. V. Kulkarni, "Short circuit withstand of transformers - a perspective," TRAFOTECH - 2002, International Conference on Transformers, held at Mumbai, 24-25 January 2002, pp. 34-38.
13. S. V. Manerikar and S. V. Kulkarni, "Globalization: Issues before Indian transformer manufactures," TRAFOTECH - 2002, International Conference on Transformers, Mumbai, 24-25 January 2002, pp. 143-147.
14. V. K. Lakhiani and S. V. Kulkarni, "Insulation design of EHV transformers - a review," International Insulation Conference, INSUCON 2002, Berlin, Germany, 18-20 June, 2002, pp. 283-287.
15. S. V. Kulkarni, G. B. Kumbhar, and M. Nabi, "Current trends in coupled field formulations in electrical machinery," 6th International Symposium on Electric and Magnetic Fields, Aachen, Germany, 6-9 October, 2003, pp. 287-291.
16. M. Nabi, V. R. Sule, and S. V. Kulkarni, "Efficient FE modeling and solution scheme for repeated computation through exploitation of coefficient matrix structure," 6th International Symposium on Electric and Magnetic Fields, Aachen, Germany, 6-9 October, 2003, pp. 297-300.
17. S. V. Kulkarni, "Challenges and strategies in transformer design," Invited Paper, Advanced Research Workshop on Modern Transformers ARWtr 2004, Vigo, Spain, October 28-30, 2004.
18. G. B. Kumbhar and S. V. Kulkarni, "Applications of coupled field formulations to power system engineering," International Conference on Power Systems, ICPS 2004, Kathmandu, Nepal, 3-5 November, 2004, pp. 599-603.
19. S. Verma, G. B. Kumbhar, and S. V. Kulkarni, "Coupled circuit-field formulation for analysis of parallel operation of converters with interphase transformer," International Conference on Computer Applications in Electrical Engineering - Recent Advances, Roorkee, September 29 - October 1, 2005, pp. 279-282.
20. S. V. Kulkarni, R. P. R. C. Aiyar, and R. K. Shevgaonkar, "Computational electromagnetics: issues, trends and applications," ISEF 2005 - XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, September 15-17, 2005, Paper No. CE-1.4.
21. S. Kumar, G. B. Kumbhar, S. V. Kulkarni, R. P. R. C. Aiyar, and S. V. Desai," Electromagnetic forming: A case study of coupled magneto-mechanical formulation," ISEF 2005 - XII International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Baiona, Spain, September 15-17, 2005, Paper No. EE-2.22.
22. S. V. Kulkarni, G. B. Kumbhar, Ashish Gupta, and Sourabh Varma, "Applications of field-circuit coupled formulations for reliability enhancement of transformers," International Conference on Transformers TRAFOTECH 2006, January 20-21, Session II, Paper 4, pp. II 60-66.
23. S. D. Kore, P. P. Date, and S. V. Kulkarni, "Electromagnetic welding of aluminum sheets," Sheet Metal Welding Conference, Livonia, Michigan, USA, 9-12 May, 2006.
24. A. V. Kank, G. B. Kumbhar, and S.V. Kulkarni, "Coupled magneto-mechanical field computations," International Conference on Power Electronics Drives and Energy Systems for Industrial Growth, PEDES 2006, Organized by IEEE and IIT Delhi, December 12-15, 2006.
25. K. Kaushik and S. V. Kulkarni, "A wavelet based numerical technique for electromagnetic field analysis," International Conference on Power Electronics Drives and Energy Systems for Industrial Growth, PEDES 2006, Organized by IEEE and IIT Delhi, December 12-15, 2006.
26. R. S. Bhide and S. V. Kulkarni, "Analysis of parallel operation of converters with interphase transformer," Proceedings of India International Conference on Power Electronics, IEEE-IICPE 2006, Chennai, pp. 193-196.
27. G. B. Kumbhar and S. V. Kulkarni, "Analysis of Sympathetic Inrush Phenomena in Transformers Using Coupled Field-Circuit Approach," IEEE PES General Meeting, June 24-28, Tampa, USA.
28. R. Escarela-Perez, S. V. Kulkarni, and E. Melgoza, "3D Finite-Element Determination of Multi-Port Network Models for Transformer Calculations," Paper PA1-8, Proceedings of the 16th Conference on the Computation of Electromagnetic Fields, COMPUMAG 2007, June 24-28, Aachen, Germany.
29. S. V. Kulkarni, "Coupled Field Computations for Analysis of Intricate Phenomena in Transformers," Invited Paper, Advanced Research Workshop on Modern Transformers ARWtr 2007, Baiona, Spain, October 28-30, 2007.
30. R. S. Bhide and S. V. Kulkarni, "High Frequency AC-DC Converter for High Current Applications," Paper No. 1349, Proceedings of International Conference on Electrical Machines, ICEM 2008, Vilamoura, Portugal, 6-9 September, 2008.

⇒ National Conferences

1. D. A. Koppikar, K. Vijayan, and S. V. Kulkarni, "FEM analysis for optimization and reliability improvement of EHV transformers and reactors," Third Workshop and Conference on EHV Technology, IISc Bangalore, 2-4 August 1995, pp. 63-66.
2. D. A. Koppikar, S. V. Kulkarni, and S. A. Khaparde, "Overfluxing simulation of transformer by 3D FEM analysis," Fourth Conference on EHV Technology, IISc Bangalore, 17-18 July 1998, pp. 69-71.
3. D. A. Koppikar, S. V. Kulkarni, and S. P. Nangrani, "Reliability of EHV transformer insulation under short circuit condition," Fourth Conference on EHV Technology, IISc Bangalore, 17-18 July 1998, pp. 72-76.
4. K. V. Pawaskar and S. V. Kulkarni, "Latest trends in the field of transformers," All India Conference on Electrical System - Transformers, 18-19 December, 1998, Mumbai, pp. 01-09.
5. S. V. Kulkarni, "Comprehensive design verification of transformers by FEM analysis," NIIT-ANSYS Users Conference, Pune, India, November 16-17, 2000.
6. V. K. Reddy and S. V. Kulkarni, "Estimation of natural frequencies of power transformer windings by FEM analysis," NIIT-ANSYS Users Conference, Pune, India, November 16-17, 2000.
7. S. V. Kulkarni and M. Nabi, "Finite element computation and analysis of electromagnetic systems: major issues and trends," Invited Paper, National Conference on Trends of Computational Techniques in Engineering, Longowal, October 15-16, 2004, pp. 651-659.
8. R. T. Keshwani, S. V. Kulkarni, S. Bhattacharya, and S. Makhija, "Models and computational techniques for reliable detection of defects in pipelines using IPIG," National Conference on Trends of Computational Techniques in Engineering, Longowal, October 15-16, 2004, pp. 77-83.
9. S. V. Kulkarni and N. K. Gavli, "Transformer monitoring: recent trends and case study," Invited Paper, Workshop on Substation and Distribution Automation, Crompton Greaves Limited, Kanjur, Mumbai, October, 2005.
10. R. T. Keshwani, S. V. Kulkarni, and S. Bhattacharya, "Defect characterization of instrumented pipeline inspection gauge using COMSOL Multiphysics," Invited Paper, published in e-News of Innovate Software Solutions Pvt. Ltd., January 2006, pp. 1-6.
11. A. V. Kank and S. V. Kulkarni, "Analysis of Lorentz and saliency forces in rotating machines," Proceedings of COMSOL Users Conference 2006, Bangalore, November 2006, pp. 18-21.
12. S. V. Kulkarni, "Transformers - The Vital Components in Power System," Electrical India Magazine, August 2007, pp. 72-74.

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