M.Tech, B-Tech

Sruthy V. currently serves as Assistant Professor (Sr.Gr.) at the Department of Electrical and Electronics Engineering at Amrita School of Engineering, Amritapuri. Sruthy V. has completed B. Tech. in EEE from Amrita School of Engineering in the year 2009 and M. Tech. in Power Systems from Government Engineering College,Thrissur in the year 2011. She secured National level Excellence Award for the performance in ISTE workshop on Solar Photovoltaic conducted by IIT Bombay 2011. She is also Life time member of Indian Society for Technical Education.


Publication Type: Conference Paper

Year of Publication Title


N. Naufal, P. K. Preetha, and Sruthy V., “Dynamic analysis of converter based fault current limiter of an AC/DC microgrid”, in 2017 International Conference on Technological Advancements in Power and Energy ( TAP Energy), Kollam, India, 2017.[Abstract]

Over the years there has been a drastic increase in the usage of number of renewable energy resources like solar energy, wind energy etc. They exist in islanded as well as in interconnected mode with the utility system. Use of fault current limiter is an efficient way of improving the reliability of a micro grid. This paper discusses a bridge type converter based fault current limiter (FCL) having energy management capabilities. The FCL can act both as a protective device and as an energy management device. The FCL is implemented using a bridge rectifier and a boost converter. The inductor used in the boost converter is used for limiting the current during fault conditions. The energy stored in the inductor during faulted as well as normal condition is boosted and is used for powering dc loads. The dynamic analysis of the FCL is done in MATLAB Simulink. A prototype hardware model of the fault current limiter is implemented and tested to verify the effectiveness of the circuit.

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N. Naufal, P. K. Preetha, and Sruthy V., “Reliability enhancement of an interconnected power system using fault current limiter”, in 2017 Innovations in Power and Advanced Computing Technologies (i-PACT), Vellore, India, 2017.[Abstract]

Renewable energy technologies are growing day by day. Whenever a new DG unit is connected to the main grid or in case of occurrence of fault there will be considerable increase in the magnitude of current in the line. Different kinds of symmetrical (LLL) and unsymmetrical (LG, LLG) faults can occur in power system, out of which the three phase short circuit fault will be the most severe one and this can result in sudden increase of current to a very high value, which exceeds the maximum rating of the protective devices used. In this paper a resistive fault current limiter is used for limiting the three phase short circuit current. Simulations are carried out to demonstrate the effectiveness of the FCL. Introduction of FCL can considerably affect the overall reliability of the system. FCL reduces the magnitude of short circuit current through the protective devices. Here the reliability of the system is analyzed in a test bed with and without FCL and the changes in the reliability indices are studied. Simulation results show that with the incorporation of FCL, the overall reliability of the system gets improved.

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Jayasree P. R., Prasad, V., and Sruthy V., “Active Power Sharing and Reactive Power Compensation in a grid tied photovoltaic system”, in International Conference on Processing of Materials, Minerals and Energy, 2016.[Abstract]

In the present scenario of energy crisis, researches on non-conventional energy sources have grown appreciably. The electrical energy derived from the PV panel is considered as the most useful natural resources. This paper deals with the operation and control of a grid interfaced PV system. Inverter control is achieved by using adaptive hysteresis current control scheme. The proposed inverter control technique interfaces renewable energy source and the AC bus of micro grid. It provides the possibility of injecting power from the renewable sources and favours reactive power compensation. The resulting controller is simulated in MATLAB/SIMULINK and results are analyzed. More »»


J. R and Sruthy V., “Fault ride through augmentation of microgrid”, in International Conference on Advancements in Power and Energy (TAP Energy), 2015, Kollam, India, 2015.[Abstract]

The modern grid codes for fault ride through specifications in transmission and distribution grids specify that Distributed Generation (DG) must remain connected to the grid even at voltages well below the nominal voltage. This is contrary to the traditional approach, whereby the power plants were not required to stay connected. The reliable operation of the grid during this period is challenging as the inverter based DGs are designed to operate reliably at nominal voltages and does not function well under the abnormal conditions. This paper presents a new fault ride through scheme that limits fault current within the system limits. The microgrid (MG) model considered here is studied under normal and fault situation and a fault analysis on an islanded microgrid with two wind sources and a Photovoltaic (PV) source. Different types of faults are considered at random points to study the effect of fault location and recovery time. A novel control strategy for the interface converter is proposed where a master-slave control is adopted for the sources, which enables the power sharing between the DGs and a fault ride through logic that addresses the fault current limiting is developed. The scheme has been validated with simulation results in MATLAB/Simulink.

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S. Surendran and Sruthy V., “An Isolated Bi-Directional Converter with Improved Power Conversion Efficiency for DC Distribution Systems”, in Proceedings of National Conference on Technological Advancements in Power and Energy, 2013.[Abstract]

A bidirectional AC-DC and DC-DC converter is proposed for DC distribution systems with high frequency isolation and bidirectional power flow capability. The
topology is based on a non-isolated bidirectional AC-DC converter for grid-connected operation and an isolated bidirectional DC-DC converter to interface between DC bus and DC link of the rectifier. The proposed converter has the ability to not only transfer energy from the grid to the vehicle, but also transfer energy from the vehicle to the grid (V2G). So, this converter can be used as a power backup for the grid. This converter allows fast control and high power density and requires proper controlling method for the switches which is implemented via programming. The prototype model of the bidirectional charger topology can be used for the hybrid electric vehicle applications and they provide a flexible power processing interface between an energy storage device and the rest of the system.

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Sruthy V., “Transient Stability Enhancement of Wind Farms connected Power System”, in Second National technological congress, 2012.


Sruthy V., “Design of Strategic Information in the Deregulated Indian Power market: An agent based approach”, in All India seminar: Open Access & Market development of Power in India_ The Institute of Engineers India, 2010.