Qualification: 
M.Tech, B-Tech
sruthyv@am.amrita.edu

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.

Publications

Publication Type: Conference Paper

Year of Publication Title

2020

M. Tiwari, Sruthy V., and P. K. Preetha, “Foldable Floating Solar Array for Electric Vessel”, in 2020 Third International Conference on Smart Systems and Inventive Technology (ICSSIT), 2020.[Abstract]


This paper introduces the concept of the foldable floating solar array (FFSA) for electric vessels. As being moved from fossil-based transportation to fumeless mode, going electric is the most preferred way based on efficiency and economic viability. With an increased demand for electric transport, the number of electric ships and boats has gone up. With this increase, there is more need for energy production to fulfill the demands. To tackle this problem sustainably, integration of renewable energy with electric vessels is focused in this paper, for that the idea of a foldable floating solar array is proposed. This product is based on pre-existing technologies of floating solar farms, overhead charging and microgrid concept in an electric vessel. Such technologies provide an efficient and reliable solution to problems. In this paper, the insight about the product, its design, application, and the challenges faced are detailed. The overall system is demonstrated by using the MATLAB/Simulink model. The performance of FFSA is evaluated. The design and analysis of FFSA are detailed in this.

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2019

Sruthy V., Raj, B., P. K. Preetha, and K. Ilango, “SPV based Floating Charging Station with Hybrid Energy Storage”, in 2019 IEEE International Conference on Intelligent Techniques in Control, Optimization and Signal Processing (INCOS), Tamilnadu, India, 2019.[Abstract]


This paper is proposing a solar photovoltaic based floating charging station (FCS) for marine electric vehicles. The floating charging station can be made useful to all electric marine vehicles during their course of voyage without diverting to port for recharging. The marine charging stations act as self-sustained structures entirely relied on renewable energy generation and hybrid storage system technologies. The marine vessel can meet their energy requirement by bidding with the charging stations via proper communication systems. Floating solar power plant stations is an advanced approach of using photovoltaic modules on water infrastructures to conserve the land along with marine application. This proposed floating charging station with a hybrid energy storage system is designed and verified using MATLAB/Simulink model. The performance of FCS is evaluated. The design and analysis of FCS is detailed in this by considering various load conditions and storage charge controller.

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2018

Sruthy V., Anagha, A., and P. K. Preetha, “A Hybrid Converter Based Topology For Solar Powered Shipboard Power Systems”, in 2018 3rd IEEE International Conference on Recent Trends in Electronics, Information Communication Technology (RTEICT), Bangalore, India, 2018.[Abstract]


International trading mainly depends upon shipping industry which uses fossil fuels as the major source of fuel for transportation. Excessive use of fossil fuels often leads to environmental pollution. It also has adverse effect on the marine eco system. Hence the fossil fuels can be replaced with renewable sources of energy such as solar energy, wind energy etc. In the conventional methods of connecting a solar panel to a grid or an isolated system, a boost converter and a voltage source inverter are generally used to power simultaneous AC and DC loads. Since the power conversion stages are more for this topology, it has reduced power processing capability. A hybrid converter topology consists of a single converter which is capable of powering both AC as well as DC loads concurrently. A hybrid converter is derived from a boost converter with a voltage source inverter bridge network. This paper presents simulation analysis of hybrid converter for shipboard systems. Simulation is done in MATLAB platform. From the analysis it is found that instead of using two separate power converters in a shipboard power system, a hybrid converter can be used which has higher AC gain, reduced losses, and reduced number of switches. Compactness of the system and higher reliability makes them best suited for shipboard power system.

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2017

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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2017

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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2016

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 »»

2016

V. Prasad, Jayasree P. R., and Sruthy V., “Hysteresis Current Controller for a micro-grid application”, in 2016 International Conference on Energy Efficient Technologies for Sustainability (ICEETS), 2016.[Abstract]


Researches related to non-conventional energy sources have grown significantly in the present scenario. The electrical energy from the PV panel is considered as one of the most useful natural resources. This paper deals with the operation and control of a grid connected PV system with a nonlinear load. A utility grid connection is provided in order to replenish energy levels in case of power shortage from the renewable energy sources. Hysteresis Current Controller is employed for the inverter control. The proposed inverter control technique interfaces renewable energy sources and the AC bus of micro grid. It offers the possibility to inject power from the renewable sources and also improves the power quality in the same micro grid. Simulation results show the effectiveness of the proposed inverter control technique in improving the power quality of the system.

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2015

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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2013

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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2012

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

2010

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.

Publication Type: Journal Article

Year of Publication Title

2020

Sruthy V., Raj, B., and P. K. Preetha, “An offshore floating charging station for electric ships: accessibility enhancement schemes for recharging”, Ships and Offshore Structures, pp. 1-8, 2020.[Abstract]


ABSTRACT Marine transportation is fast witnessing an increased trend towards being all electric. This work puts forth offshore electric floating charging stations (FCS) as the need of the hour for pushing forward the transition from a completely fuel-based propulsion system to electric-powered vessel. Evaluation of a solar photovoltaic-based FCS for electric ships is made in this study and it puts forward novel solutions to enhance the accessibility of ships to the FCS facility on the sea route. One of which is using a remotely operated power carrier vehicle which can be deployed from the vessels to the FCS to meet its power requirements, with suitable communication system. A prototype model of the remotely operated carrier vehicle is also made for analysis. A pole-based charging point structure scheme for FCS is proposed as another solution to access FCS facilities and an initial feasibility evaluation of floating charging stations is also considered in this study.

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