पूर्वोत्तर क्षेत्रीय विज्ञान एवं प्रौद्योगिकी संस्थान   
North Eastern Regional Institute of Science and Technology 
deemed-to-be-university under the Ministry of Education, Govt. of India
Nirjuli - 791109, Arunachal Pradesh 
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Dr. Sarsing Gao


Electrical Machines, Distributed Power Generation, Energy and Power Quality

E-mail:sg [AT] nerist(dot)ac(dot)in
Phone(EPABX/Office):2257401 - 411 Ext. 7005

  • Professional Background
  • Educational Details
  • Administrative Background
  • Memberships in Professional bodies
  • Teaching Engagements
  • M. Tech Projects and Thesis Supervised/ Currently Supervising
  • PhDs Supervised
  • Participation in short term courses
  • Courses or Conferences Organised
  • Special Lectures Delivered
  • Publications
  • Miscellaneous
Current Designation DOJ on current Position Type of Association Designation at the time of joining Date of joining in the organization
Professor  01/08/2014 Regular Lecturer 03/08/1994


From To Designation Organisation
August 2014   Till date Professor NERIST
August 2007 July 2014 Associate Professor NERIST
June 2000 July 2007 Senior Lecturer NERIST
August 1994 May 2000 Lecturer NERIST
Degree Subject University
Ph. D Electrical Engineering IIT Delhi  
M. Tech Alternate Hydro Energy Systems IIT Roorkee
B. Tech Electrical Engineering NEHU Shillong
From To Designation Organisation
May 2021 Till date Dean (Academic) NERIST
February 2018 May 2021 Controller of Examinations NERIST
December 2014 January 2018   Head, Dept. of Electrical Engineering NERIST
November 2011  December 2014 Head, ET Cell NERIST
July 2006 July 2007 Chairman, Gymkhana NERIST
July 1995 June 1999 Liaison Officer, SC/ST NERIST
  1. Senior Member, IEEE
  2. Life Member, ISTE
Title Course Code Module Semester
Electrical Trade Theory EE 2103 Base Second
Electrical Installation & Practice EE 2201 Base First
Electrical Appliances EE 2202 Base Second
Generation, Transmission and Distribution EE 3102 Diploma Second
Basic Electrical Engineering EE 4122 Diploma Second
Electrical Machine-II EE 4201 Diploma Second
Electrical Power Utilization EE 4203 Diploma First
Advanced Electrical Machine EE 5103 Degree First
Special Electromechanical Systems EE 6024 Degree Second
Renewable Power Generation Technologies EE 7102 PG First
Title of Project Names of Students Status
Modeling and Simulation of Doubly Fed Induction Generator Ms. Seme Pao Completed
Power Quality Aspects of Induction Generator Mr. Abhishek Kumar Completed
Voltage and Frequency Control of Grid connected Permanent Magnet Synchronous Generator Ms. Toko Chichi Completed
Power Quality Studies in Integrated Renewable Energy Sources Ms. Rinchin W. Mosobi Completed
Power Quality Improvement in a DC Motor Drive Mr. Tana Bida Completed
Power Quality Improvement in a AC Motor Drive Mr. Ng. Manichal Meitei Completed
Power Quality Improvement using Custom Power Devices Ms. Panchita Saikia Completed
Condition Monitoring of Three-phase Induction Motor Ms. Bandita Neog Completed
Performance Analysis of Electrical Machine using Finite Element Method Mr. Amlesh Kumar Completed
Feasibility Study of Renewable Energy based Micro Grid Ms. Sushma Linggi Completed
Study of Inverter Dominant Grid Mr. Tamchi Wadie Completed
Study of Renewable Energy based Utility Grid Ms. Nibha Borah Completed
Voltage and Frequency control of Micro Hydro Generator Mr. Liagi Tabyo Completed
Performance Improvement of Bushings in Transformer Mr. Omanso Tayang Completed
Study of Micro Hydro Power System Ms. Taba Yaker Completed
Topic Scholar Name Status of PhD Registration Year
Harnessing Hydro Power using Savonius rotor Mr. Rajen Pudur Awarded 2012
Power Quality Analysis of Integrated Renewable Energy Systems Ms. Rinchin W. Mosobi Awarded 2014
Design and Implementation of an Efficient Micro Hydro Power System Mr. P. Devachandra Singh Awarded 2015
Control of Inverter Fed Induction Motor Drive Mr. Akhilesh Kumar Awarded 2015
Alternative Hydro Power Generation System Ms. Oying Doso Awarded 2016
Course Name Sponsored By Date
Pedagogy Training for Outcome Based Education NITTTR, Bhopal Mar. 16-17, 2017
Recent Advances in Signal Processing and Semiconductors Devices   TEQIP Jan. 24-29, 2014
Pedagogical Training for Engineering Teachers TEQIP Mar. 21-23, 2014
Stress Management TEQIP Nov. 4-6, 2013
Optical Techniques and Devices in Scientific and Engineering System Applications TEQIP Oct. 28-Nov. 1, 2013
Integrated Circuits and Power Electronics TEQIP Sep. 30-Oct. 6, 2013
Advances in Computer Integrated Manufacturing and Robotics TEQIP June 26-30, 2012
A TEQIP sponsored FDP on Engineering Optimization  TEQIP May 14-18, 2012
Solar Photovoltaics: Fundamentals, Technologies and Applications ISTE Dec. 12-22, 2011
Recent Advances in Mechanics and their Applications AICTE Aug. 1-12, 2011
Computer Aided Design of Electrical Machines with Power Electronics Applications NaMPET Jan. 28-30, 2010
Energy Efficiency AICTE Dec. 03-10, 2009
Recent Advances in Sustainable Energy IEEE Dec. 15-16, 2009
Energy, Environment and Importance of Power Electronics IEEE Jan. 02-03, 2008
Advances in Devices, Communication and IT TEQIP July 16-18, 2007
Research Methodology ICSSR-NERC Mar. 20-24, 2006
Conference Name Sponsored By Date
Power Electronics Applications in Renewable Energy Systems SIDBI Apr. 10-12, 2003
Desk Top Publishing using MS Word Community Polytechnic Dec. 06-19, 2002
Power Electronics Applications ISTE Jul. 08-18, 2002
Title Place Date
Challenges of Variable Renewable Energy NIT Arunachal Pradesh Feb. 23, 2018
Induction Generator NIT Arunachal Pradesh, Yupia Dec. 20, 2013
Estimation of Global Solar Radiation using Empirical Correlation NERIST, Nirjuli Sep. 2, 2011
Small Hydro Power Development-an Overview APEDA, Itanagar Mar. 05, 2002
The Solar Energy Option-an Overview of Thermal Applications APEDA, Itanagar Dec. 20, 2002


  1. Singh, P. D. and Gao, S., "Clean and sustainable micro hydro power generation using variable asynchronous generator controlled by AC–DC–AC converter and fuzzy PSO‑PI D‑STATCOM for standalone and grid" J. Energy Systems, Springer Nature, 2022, doi: https://doi.org/10.1007/s12667-022-00527-2.
  2. Singh, P. D. and Gao, S., “Clean and Sustainable Micro Hydro Power Generation using Parallel Variable Asynchronous Generators controlled by AC-DC-AC Converter and Fuzzy PSO/PI D-STATCOM for Remote Areas”, J. Sustainable Cities and Society, Elsevier, 2021, doi: https://doi.org/10.1016/j.scs.2021.103527
  3. Singh, P. D. and Gao, S., ‘Efficient AC-DC-AC converter for operation of variable speed small scale hydro power generation schemes’, J. Electrical Systems, vol. 17, no.1 (2021), pp. 01-20
  4. Mosobi, Rinchin W. and Gao, S., “Power quality analysis of low voltage distributed generators in standalone and grid connected modes”, Int. Journal of Power and Energy Conversion, Inderscience, vol. 12, no. 4, pp. 267-293, 2021. doi: https://doi.org/10.1504/IJPEC.2021.118029
  5. Meitei, N. Manichal, Tamang, D. and Gao, S., "A New Harmonic Analysis Reporting Technique to Improve Power Quality in Distribution System Network Applications," IEEE 2021 International Conference on Advances in Electrical, Computing, Communication and Sustainable Technologies (ICAECT), 2021, pp. 1-5, doi: 10.1109/ICAECT49130.2021.9392540
  6. Meitei, N. Manichal, Tamang, D. and Gao, S., "Power Quality Improvement Using Smart Harmonic Analysis Indicator Technique for IEEE 15-Bus Radial Distribution System," IEEE 2021 International Conference on Advances in Electrical, Computing, Communication and Sustainable Technologies (ICAECT), 2021, pp. 1-5, doi: 10.1109/ICAECT49130.2021.9392410
  7. Singh, P. D. and Gao, S., ‘Fuzzy Based AC-DC-AC Converter Controlled Micro Hydro Renewable Power Generation using Parallel Asynchronous Generators for Remote Areas’ Int. J. Ren. Ener. Res., vol. 10, no. 1, March 2020, pp. 260-273
  8. Doso O. and Gao S., "Application of Savonius Rotor for Hydrokinetic Power Generation", J. Energy Resour. Technol., ASME, January 2020, 142(1): 014501. doi: https://doi.org/10.1115/1.4044555
  9. Singh P. D. and Gao S., "A New Scheme of Micro Hydro Power Generation Using AC-DC-AC Converter and Parallel Asynchronous Generators with Variable Turbines," 2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy (PESGRE2020), Cochin, India, 2020, pp. 1-6, doi: 10.1109/PESGRE45664.2020.9070651
  10. Mosobi R. W. and Gao S., "Distributed Generators based DSTATCOM and its Harmonic Assessment," 2020 IEEE 17th India Council International Conference (INDICON), New Delhi, India, 2020, pp. 1-6, doi: 10.1109/INDICON49873.2020.9342436
  11. Doso O. and Gao S., “A Short Review on Savonius Rotor”, AIP Conference Proceedings 2273, 050036 (2020); doi: https://doi.org/10.1063/5.0024293
  12. Doso O. and Gao S., “Power Quality Improvement of Cascaded Savonius Rotor Based Hydrokinetic Power System’, Lecture Notes in Electrical Engineering, vol. 686. Springer, Singapore. doi: https://doi.org/10.1007/978-981-15-7031-5_25
  13. Doso O. and Gao S., “An Overview of Small Hydro Power Development in India”, AIMS Energy, 8 (5): 896–917. doi: 10.3934/energy. 2020.5. 896
  14. Mosobi R. W. and Gao S., “Performance Analysis of Distributed Energy Resource-Based LV Distribution Grid”, J. Inst. Eng. India Ser. B (2019), Springer. doi: https://doi.org/10.1007/s40031-019-00402-2 
  15. Singh P. D. and Gao S., "D-STATCOM based Voltage Compensator for a new Micro Hydro Power Generation Scheme Supplying Remote Areas," 2019 IEEE Research, Invention, and Innovation Congress (RI2C), Bangkok, Thailand, 2019, pp. 1-6, doi: 10.1109/RI2C48728.2019.8999921
  16. Singh P. D. Singh and Gao S., "An Isolated Hydro Power Generation using Parallel Asynchronous Generators at Variable Turbine Inputs using AC-DC-AC Converter," 2018 8th IEEE India International Conference on Power Electronics (IICPE), JAIPUR, India, 2018, pp. 1-6. doi: 10.1109/IICPE.2018.8709477
  17. Mosobi R. W. and Gao S., “Performance Analysis of Hybrid Solar-Wind-Microhydro System in Islanded Mode”, 2018 IEEE Region Ten Symposium (Tensymp), Sydney, Australia, 2018, pp. 106-111. doi: 10.1109/TENCONSpring.2018.8692037
  18. Sharma A., Singh D. and Gao, S., "Harmonic Elimination in Three Phase Cascaded Multilevel Inverter using Genetic Algorithm," 2019 IEEE International Conference on Sustainable Energy Technologies and Systems (ICSETS), Bhubaneswar, India, 2019, pp. 213-218, doi: 10.1109/ICSETS.2019.8745125
  19. Doso O. and Gao S., "Alternative Hydroelectric power generation," 2019 2nd IEEE International Conference on Power and Embedded Drive Control (ICPEDC), Chennai, India, 2019, pp. 70-73, doi: 10.1109/ICPEDC47771.2019.9036523
  20. Singh D., Sharma A., Singh P. D. and Gao S., "Selective Harmonic Elimination for Cascaded Three Phase Multilevel Inverter," 2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), Delhi, India, 2018, pp. 437-442, doi: 10.1109/ICPEICES.2018.8897407
  21. Mosobi R. W. and Gao S., “Distributed Generator Based DVR Application to a LV Distribution Grid”, 2018 2nd IEEE International Conference on Power, Energy and Environment: Towards Smart Technology (ICEPE), Shillong, India, 2018, pp. 1-6. doi: 10.1109/EPETSG.2018.8658971
  22. Singh P. D., Sharma A. and Gao S., “PWM Based AC-DC-AC Converter for an Isolated Hydro Power Generation with Variable Turbine Input”, 2018 2nd IEEE International Conference on Power, Energy and Environment: Towards Smart Technology (ICEPE), Shillong, India, 2018, pp. 1-6. doi: 10.1109/EPETSG.2018.8659179
  23. Sharma A., Singh, P. D. and Gao S., “Analysis of Sinusoidal PWM and Space Vector PWM based diode clamped multilevel inverter”, 2018 5th IEEE Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON), Gorakhpur, 2018, pp. 1-6. doi: 10.1109/UPCON.2018.8596899
  24. Pudur R. and Gao S., “Savonius rotor based grid connected hydrokinetic power generation scheme”, Sustainable Energy, Grids and Networks, Elsevier, vol. 5, pp. 148-155, 2016. doi: 10.1016/j.segan.2015.12.004
  25. Pudur R. and Gao S., “Performance Analysis of Savonius Rotor Based Hydropower Generation Scheme with Electronic Load Controller”,  J. Renewable Energy, Hindawi Publishing Corporation, vol. 2016, Article ID 4127619, 7 pages, 2016. doi: 10.1155/2016/4127619
  26. Pudur R. and Gao S., “Single phase power for remote area using Savonius rotor based hydropower generation”, IEEE ICEPE, pp. 1-6, Jun. 2015. doi: 10.1109/EPETSG.2015.7510155  
  27. Mosobi R. W. and Gao S., “Modeling and simulation of integrated renewable energy sources feeding three-phase load”, IEEE ICEPE, pp. 1-6, Jun. 2015. doi: 10.1109/EPETSG.2015.7510172
  28. Pudur R. and Gao S., “Performance analysis of Savonius rotor on different aspect ratio for hydropower generation”, IEEE ICPDEN, pp. 1-6, Jan. 2015. doi: 10.1109/ICPDEN.2015.7084490
  29. Mosobi R. W., Chichi T. and Gao S., “Power quality analysis of hybrid renewable energy system”, Cogent Engineering, Taylor & Francis, vol. 2, pp. 1-15, 2015. doi: 10.1080/23311916
  30. Mosobi R. W., Chichi T. and Gao S., “Modeling and power quality analysis of integrated renewable energy system”, IEEE NPSC, pp. 1-6, Dec. 2014. doi: 10.1109/NPSC.2014.7103806
  31. Pudur R. and Gao S., “Savonius rotor based hydropower generation”, Proc. AMETI, vol.2, pp. 104-111, . 2014. ISBN: 978-93-83842-96-4
  32. Gao S., Bhuvaneswari G., Murthy S. S. and Kalla U. K., “Efficient voltage regulation scheme for three-phase self-excited induction generator feeding single-phase load in remote locations”, IET Renewable Power Generation, vol. 8, no.2, pp.100-108, 2014. doi: 10.1049/iet-rpg.2012.0204
  33. Gao S. and Pudur R., “Harnessing hydroelectric power using Savonius rotor coupled with asynchronous generator connected to grid”, IEEE Asia-Pacific PEEC, pp. 1-4, Dec. 2013. doi: 10.1109/APPEEC.2013.6837125
  34. Gao S. and Kumar A., “Mitigation of unbalanced currents in three-phase asynchronous generator supplying single-phase nonlinear loads”, IEEE ICSET, pp. 246-251, Sep. 2012.doi: 10.1109/ICSET.2012.6357406
  35. Murthy S. S., Bhuvaneswari G., Gao S. and Ahuja R. K., “Self Excited Induction Generator for Renewable Energy Applications to Supply Single-phase Loads in Remote Locations”, IEEE ICSET, pp. 1-6, Dec. 2010. doi: 10.1109/ICSET.2010.5684947
  36. Murthy S. S., Bhuvaneswari G., Gao S. and Ahuja R. K., “A new method to determine saturated magnetizing reactance and frequency of a single-phase self excited induction generator towards steady state analysis”, IEEE PEDES, pp. 1-6, Dec. 2010. doi: 10.1109/PEDES.2010.5712469
  37. Murthy S. S., Bhuvaneswari G., Ahuja R. K. and Gao S., “Analysis of self excited induction generator using MATLAB GUI methodology”, IEEE PEDES, pp. 1-6, Dec. 2010. doi: 10.1109/PEDES.2010.5712551
  38. Gao S., Murthy S. S., Bhuvaneswari G. and Gayathri M. S. L., “Design of a Microcontroller based Electronic Load Controller for Self Excited Induction Generator Supplying Single-phase Loads”, KIPE J. Power Electronics, vol. 10, no. 4, pp. 444-449, 2010. doi:  10.6113/JPE.2010.10.4.444
  39. Murthy S. S., Bhuvaneswari G., Ahuja R. K. and Gao S., “A Novel Matlab Graphical User Interface based Methodology for Analysis, Design and Capacitor Estimation of Self Excited Induction Generators”, IEEE IAS Annual Meeting, pp. 1-6, Oct., 2010. doi: 10.1109/IAS.2010.5614614
  40. Murthy S. S., Bhuvaneswari G., Gao S. and Gayathri M. S. L., “Performance Analysis of a Self Excited Induction Generator with Digitally Controlled Electronic Load Controller for Micro Hydel Power Generation”, IEEE POWERCON, pp. 1-6, Oct., 2008. doi: 10.1109/ICPST.2008.4745310