Dr. Sasi K. Kottayil had his basic and postgraduate degrees in Electrical Engineering, in 1980 and 1984 respectively, and doctoral degree on Utility Scale Wind Electricity Generation in 2000.He has been in the teaching profession for the last 29 years. He is presently working as Professor in the Department of Electrical & Electronics Engineering at Amrita Vishwa Vidyapeetham, Ettimadai, Coimbatore. He served earlier at MIT Manipal, NERIST, Itanagar, and Tezpur University, Assam.

Dr. Sasi is a Fellow of the Society of Energy Engineers and Managers (SEEM) and is the Editorial Advisor of the SEEM magazine, Energy Manager published by Energy Press.


Besides, he is a member in 

  • Technical Committee of ANERT, Govt of Kerala, for development of wind farms in Kerala.
  • R & D subgroups of Centre for Wind Energy Technology (C - WET), Govt of India

Dr. Sasi has published more than 60 research papers, delivered more than 125 invited lectures, chaired several sessions in national and international conferences, carried out eight sponsored projects and reviewed several papers for international journals. He is guiding several students in the area of energy studies for their masters and Ph. D.

Dr. Sasi was awarded a Fellowship by European Union to attend Salzburg Seminar on Global Energy Fulcrum: Asian Development and International Response held at Salzburg, Austria in November - December 2008. He also visited Uppsala University, Sweden as a visiting faculty in June 2008, and Royal Institute of Technology, Stockholm in 2012. He was awarded Kerala State Energy Conservation Commendation Certificate in 2009 in the category ofResearch and Innovation. He is presently selected for the Prometeo Project of Equador Government.

Dr. Sasi is the coordinator of Energy Centre at Amrita University, Coimbatore that is being set up with support from Government of India. Amrita Energy Centre has research facilities in wind and solar energy. The Centre has been offering two postgraduate diploma programs in wind energy, supported by C - WET and Indian Wind Turbine Manufacturers Association (IWTMA). Dr. Sasi also serves as a consultant for solar PV and wind energy development. Energy Conservation and Renewable Energy are the areas of his interest.


Publication Type: Journal Article
Year of Publication Publication Type Title
2016 Journal Article P. Vadana, ,, and Sasi K. Kottayil, “Dynamic energy management on a hydro-powered smart microgrid”, Advances in Intelligent Systems and Computing, vol. 397, pp. 627-635, 2016.[Abstract]

Penetration of renewable energy-based microgrids onto the legacy grid is in demand to solve the global energy problems and the environmental issues. This paper attempts to employ dynamic energy management on a Grid-Connected Smart Microgrid (GCSMG) energized by a Micro Hydro Power Plant (MHPP) sans governor control. Frequency control of such SMGs poses a challenge as the latter is distributed. The concept of Dynamic Energy Management (DEM) plays a significant role in accomplishing the frequency control without perturbing the controlling facility in the conventional grid. DEM is a concept of controlling the charge-discharge transactions on the energy storage modules to oppose the frequency excursions on the grid. Support Vector Machine (SVM) algorithm is employed to automate DEM operation. The Dynamic Energy Management System (DEMS) is implemented on a Field Programmable Gate Array (FPGA) as the response time is critical for this application. The DEM scheme is validated on the SMG simulator in the Renewable Energy Laboratory of Amrita Vishwa Vidyapeetham University, Coimbatore. © Springer India 2016.

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Publication Type: Conference Paper
Year of Publication Publication Type Title
2014 Conference Paper V. D. Prasanna and Sasi K. Kottayil, “Energy-aware intelligent controller for Dynamic Energy Management on smart microgrid”, in 2014 Power and Energy Systems Conference: Towards Sustainable Energy, PESTSE 2014, Bangalore, 2014.[Abstract]

A Dynamic Energy Management (DEM) controller which is capable of taking decisions based on the status of the grid-connected smart microgrid has been developed using Support Vector Machine (SVM) and Artificial Neural Networks (ANN). The proposed control strategy involves the decisions for the dynamic charge-discharge transactions in the energy storage systems like battery and pumped hydro (PH) units connected to the smart microgrid in order to maintain a real time balance of generation and load. A comparison has been made based on the realizations of both SVM model and ANN model on SPARTAN 3AN Field Programmable Gate Array (FPGA) and the results show that SVM implementation is better than ANN implementation. The projected DEM system when tested with the existing laboratory model of a smart microgrid results in sustainable supply of power as the SVM based DEM controller monitors power flow in the lines and provides an optimal solution. © 2014 IEEE.

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2014 Conference Paper A. V. Panikulam, Megha, I. P., Teja, A. V. N. Sai, Pandey, S., Prajof, P., and Sasi K. Kottayil, “A low cost grid interface for DFIG using SPWM technique”, in 2014 Power and Energy Systems Conference: Towards Sustainable Energy, PESTSE 2014, Bangalore, 2014.[Abstract]

Grid integration of a laboratory scale Doubly Fed Induction Generator (DFIG) has been carried out and reported here. The stator of the DFIG is directly connected to the grid and the rotor is interfaced to the grid through a pair of back to back converters (rectifier and inverter). A low cost control scheme using sinusoidal pulse width modulation (SPWM) technique is used in the inverter to match the rotor voltage, phase and frequency with those of the grid and also to facilitate power transfer by creating a phase shift. Complexity in the interface controller is avoided as it allows only super synchronous generation. The scheme has been successfully validated in laboratory and the results are presented here. © 2014 IEEE.

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2014 Conference Paper D. Ea Soman, Krishna, Ra, Leijon, Ma, Vikram, Kb, Sasi K. Kottayil, Vitoi, L. Ac, Oliveira, J. Gc, and Kumar, S. Sd, “Discontinuous conduction mode of a three-level boost DC-DC converter and its merits and limits for voltage cross regulation applications”, in Proceedings, IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014, pp. 4268-4272.[Abstract]

<p>Distributed generation and smart grid integration of renewable energy sources introduce a lot of challenges for the enabling power electronic converter technology. Some of these challenges include wide controllability range, high power handling and good reliability. Three-level boost converter is one of the attractive solution for applications requiring voltage cross regulation such as three-level neutral point clamped inverter based grid integration of renewable sources. The present work shows the advantages and disadvantages of using discontinuous conduction mode of a Three-level boost converter for voltage cross regulation. The converter working principle, modes of operation and operating cases are listed briefly. The simulation results compare the DCM and CCM cross regulation effects. Based on these results, the controllability range of the converter is analyzed to understand the suitability of the converter for various applications. © 2014 IEEE.</p>

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