Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Subject: search.filters.subject.Photovoltaic system

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    Simple and accurate method of modeling Photovoltaic module: A different approach
    (IEEE Computer Society help@computer.org, 2013) Jena, D.; Ramana, V.V.
    This paper proposes a different method of modeling Photovoltaic (PV) System in uniform irradiance conditions. It provides a simple and accurate method of modeling PV system using a single diode model by considering series and shunt resistance. This model computes five parameters and is having better accuracy than the existing models in literature. The accuracy of the proposed modeling technique is validated by comparing the model with the experimental values and datasheet values. The proposed model can be extended for modeling the effect of non-uniform irradiance conditions on PV system and also to track the maximum power from the PV source under non-uniform irradiance conditions. © 2013 IEEE.
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    Coordination control of microgrid
    (Institute of Electrical and Electronics Engineers Inc., 2015) Raj, D.C.; Gaonkar, D.N.
    In this paper ac/dc microgrid is implemented consisting of ac/dc loads and sources, operated in the grid connected mode and isolated mode. Multiple conversions like ac/dc, dc/ac can be reduced by ac/dc microgrid. Restructure of power system, increase in power demand and environment concerns are causing a focus on the distributed generation system with renewable energy. Photovoltaic system and wind turbine generation system are causing focus nowadays. Wind turbine generation system with ac loads are connected to the ac grid, photovoltaic system with dc loads are connected to the dc grid. Battery is connected to the dc bus, based on the power requirement battery bi-directional dc/dc converter charges or discharges the battery. Co-ordination control of all converters in dc and ac bus is performed for reliable transfer of power between ac and dc bus based on the load and source condition. A small ac/dc microgrid is modeled and simulated using Matlab/Simulink. The simulation results show that the coordination control is stable under various load and source condition. © 2014 IEEE.
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    Battery-ultracapacitor storage devices to mitigate power fluctuations for grid connected PV system
    (Institute of Electrical and Electronics Engineers Inc., 2016) Sabhahit, N.S.; Gaonkar, D.N.; Jhunjhunwala, J.V.; Karthik, R.P.
    This paper presents a control strategy based on energy storage systems to minimize the output power fluctuations for a PV system. Solar energy is naturally intermittent with stochastic fluctuations, by virtue of which, stability and power quality of grid operation are affected. This makes grid integration of PV system cumbersome. The aim of this study is to develop a control strategy to deliver smoothened power to the grid, using battery and ultracapacitors for a grid connected hybrid system. The fluctuating power is absorbed by a battery and ultracapacitors during erratic solar power variation, thus being able to mitigate the power fluctuations to the grid. Bidirectional converters are used in tandem with a battery and ultracapacitors to ensure active energy flow between the grid and the storage systems. The inverter control strategy is implemented such that it will maintain a constant DC link voltage. The PV power system is controlled to extract maximum power. Dynamic modeling and simulation study are accomplished using MATLAB/Simulink. © 2015 IEEE.