Dr. Sashidhar Sampathirao

Designation : Assistant Professor

Broad Area of Expertise : Electrical Engineering

Email : ssd{at}iitgoa.ac.in

Contact Number : 0832-2490-109

Address : F-18, Academic Block B

Personal Page

Educational Qualifications

Ph.D., Indian Institute of Technology Bombay 

Thesis Title: Investigations on Ferrite Permanent Magnet Motors for Deep Bore-Well Submersible Water Pumps 

Supervisor: Prof. B. G. Fernandes

Areas of Research

Design and finite-element modelling of electrical machines, motors for renewable energy and electric vehicle applications, permanent magnet and reluctance motor drives, motors for aircraft and marine applications.

Courses Taught

EE-211: Electrical Machines and Laboratory

EE-222 : Electrical Machines and Power Electronics (Jointly with Dr. Sheron F)

EE-225 : Network Theory

EE-101 : Introduction to Electrical and Electronic Circuits (Jointly with Dr. Ganga)

EE-234 : Electrical Machines Laboratory 

EE-611: Modelling and Analysis of Electrical Machines

EE-610: Power System Dynamics and Control (Jointly with Dr. Shakthi P)

EE-100: Introduction to Profession

Professional Appointments

  1. Assistant Professor - School of Electrical Sciences, IIT Goa (07/2018 - present)
  2. Project Research Scientist - Electrical Engineering Department, IIT Bombay (06/2017 - 07/2018)
  3. Research Associate - Electrical Engineering Department, IIT Bombay (12/2016 - 05/2017)
  4. Senior Research Assistant - National Centre for Photovoltaic Research and Education, IIT Bombay (02/2012 - 07/2012)
  5. Project Research Assistant - Andhra University-Naval Science and Technological Lab. (Joint Project) , DRDO, Visakhapatnam (10/2011 - 01/2012)

Recent Publications

Journals:

  • Srinivas Baka, S. Sashidhar and B. G. Fernandes, "Influence of Zero-Sequence Circulating Current on the Performance of Star-Delta Winding Line-Start Ferrite Assisted Synchronous Reluctance Motor," IEEE Transactions on Energy Conversion, 2022 (Early Access).
  • Nithin Kumar Goona, P.S. Reddy and S. Sashidhar, "Distributed Source Scheme to solve the classical form of Poisson equation using 3-D Finite-Difference Method for improved accuracy and unrestricted source position," Mathematics and Computers in Simulation, Elsevier, vol. 190, pp. 965-975, 2021, ISSN 0378-4754.
  • Srinivas Baka, S. Sashidhar and B. G. Fernandes, “Design of an Energy Efficient Line-Start Two-Pole Ferrite Assisted Synchronous Reluctance Motor for Water Pumps”, IEEE Transactions on Energy Conversion, vol. 36, no. 2, pp. 961-970, June 2021.
  • S. Sashidhar, V. Guru Prasad and B. G. Fernandes, "A Single-Stage Sensorless Control of a PV based Bore-Well Submersible BLDC Motor," IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 7, no. 2, pp. 1173-1180, June 2019.
  • S. Sashidhar and B. G. Fernandes, "A Novel Ferrite SMDS Spoke-Type BLDC Motor for PV Borewell Submersible Water Pumps," IEEE Transactions on Industrial Electronics, vol. 64, no. 1, pp. 104-114, Jan 2017.
  • S. Sashidhar and B. G. Fernandes, "Braking Torque due to Cross-Magnetization in Unsaturated IPM Machines and its Mitigation," IEEE Transactions on Magnetics, vol. 53, no. 1, pp. 1-9, Jan 2017.

Patents:

  • S. Sashidhar, Silba Mathew and B. G. Fernandes, “Motor System and Winding for an Electric Motor,” Indian Patent (Granted), Patent No. 356976.
  • S. Sashidhar and B. G. Fernandes, "Semi-Modular Submersible Brushless dc Motor," Indian Patent Application No. 201821010872.

Conferences:

  • M. Israyelu and S. Sashidhar, "Hybrid Switched Inductor Step-Up Ultra-Sparse Matrix Converter for Wind Generator Applications", in Proc. of 47th Annual IEEE Industrial Electronics Society (IECON) Conf., Toronto, 2021, pp. 1-6.
  • M. Israyelu and S. Sashidhar, "Comparison of Switching Patterns of SVM for a Novel High Gain Indirect Matrix Converter", in Proc. of 47th Annual IEEE Industrial Electronics Society (IECON) Conf., Toronto, 2021, pp. 1-6.
  • V. Gowtham and S. Sashidhar, "Hybrid Ferrite Al-Ni-Co PM Assisted Synchronous Reluctance Motor for Air-Conditioner Compressors", in Proc. of 47th Annual IEEE Industrial Electronics Society (IECON) Conf., Toronto, 2021, pp. 1-6.
  • M. Sanjeev, M. Israyelu and S. Sashidhar, "Comparative Analysis of Direct SVM and Indirect SVM Techniques for Direct Matrix Converter", in Proc. of International Symposium of Asian Control Association on Intelligent Robotics and Industrial Automation (IRIA), Goa, 2021, pp. 95-100.
  • Nithin Kumar Goona, P.S. Reddy and S. Sashidhar, "A Proposal for Switched Magnetization Superconductor Motor", in Proc. of IEEE 14th Workshop on Low Temperature Electronics (WOLTE), Matera, 2021, pp. 1-4.
  • Jitendra Kumar, V. Gowtham and S. Sashidhar, “Comparison of Synchronous Reluctance, PM assisted Synchronous Reluctance and Spoke-Type BLDC Motor for an E-Rickshaw”, accepted in 22nd IEEE ICIT International Conference, Valencia, Spain, December 2020.
  • V. Gowtham and S. Sashidhar, “Comparison of Hybrid PM Assisted Synchronous Reluctance Motors”, accepted in 22nd IEEE ICIT International Conference, Valencia, Spain, December 2020.
  • Anupam Sharma and S. Sashidhar, “A Novel Ring Permanent Magnet Flux Reversal Machine for a Direct-Drive Wind Generator”, in Proc. of 46th IEEE IES IECON International Conf., Singapore, Oct 2020, pp.1-6.
  • Anupam Sharma and S. Sashidhar, "Comparison of Wind Turbine Generators for Roof-top Wind Power: Case Study, Issues and Challenges", in Proc. of 33rd IEEE Region 10 International Conference TENCON 2019, Kochi, Oct 2019, pp 1-6.
  • Nithin Goona, P.S. Reddy and S. Sashidhar, "Effect of Magnetisation of Bulk Superconductors on Permanent Magnets for Reversible Braking Applications", in Proc. of 11th International Workshop on Processing and Applications of Superconducting (RE)BCO Materials (PASREG 2019), Prague, 2019.
  • S. Sashidhar, Silba Mathew and B. G. Fernandes, "Novel Toroidal Winding for Efficiency improvement of a Line-Start Induction Motor," in Proc. of 44th Annual IEEE Industrial Electronics Society IECON Conf., Washington DC., Dec 2018, pp 607-612.
  • Srinivas Baka, S. Sashidhar and B. G. Fernandes, "Design and Optimization of a 2-Pole Line-Start Ferrite assisted Synchronous Reluctance Motor for a Downhole Pump," in Proc. of 23rd Electrical Machines International Conf.(ICEM), Greece, Oct 2018, pp. 131-137.
  • Srinivas Baka, S. Sashidhar and B. G. Fernandes, "Effect of Flux Barrier Shape on the Performance of a Two-Pole Line-Start Synchronous Reluctance Motor," in Proc. of IEEE Power Electronics, Drives and Energy Systems (PEDES) International Conf., Chennai, Dec 2018, pp. 1-6.
  • Srinivas Baka, S. Sashidhar and B. G. Fernandes, "Multi-Barrier Two-Pole Line-Start Synchronous Reluctance Motor with High Saliency for a Bore-Well Submersible Pump," in Proc. of 19th Annual IEEE-IES Industrial Technology International Conf., Lyon, Mar 2018, pp. 475-480.
  • S. Sashidhar and B. G. Fernandes, "Comparison of a ferrite based single, three-phase spoke and surface permanent magnet BLDC motor for a PV submersible water pump," in Proc. of 16th Annual IEEE-IES Industrial Technology International Conf., Seville, Mar 2015, pp. 671-676.
  • S. Sashidhar and B. G. Fernandes, "Optimal Design of Photovoltaic based Submersible Permanent Magnet BLDC Motor Using FEM," in Proc. of 41st Annual IEEE Industrial Electronics Society IECON Conf., Yokohama, Nov 2015,pp. 5241-5246.
  • S. Sashidhar and B. G. Fernandes, "A Low-Cost Semi-Modular Dual-Stack PM BLDC Motor for a PV based Bore-well Submersible Pump," in Proc. of 21st Electrical Machines International Conf., Berlin, Sept 2014, pp. 24-30.
  • S. Sashidhar and B. G. Fernandes, "A Multi-physics Approach for the Design of Bore-well Submersible Spoke-Type BLDC Motor," in Proc. of 40th Annual IEEE Industrial Electronics Society IECON Conf., Dallas, Oct 2014, pp. 330-336.
  • S. Sashidhar and P. Mallikarjuna Rao, "An ER-Diagram based classification for CAD of brushless PM Motor design parameters," in Proc. of National Conference on Contemporary Control, Visakhapatnam, May 2012, pp. 14-18.

Recognition and Awards

  1. Best Technical Presentation Recognition From IEEE Industrial Electronics Society, IECON 2014, Dallas, USA
  2. IES Student Travel Grant, IEEE Industrial Electronics Society, IECON 2014, Dallas, USA
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