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Accueil du site → Doctorat → Inde → 2021 → Study of the impact of solar irradiance_dust accumulation_temperature variations and wind velocity on output power of silicon based photovoltaic solar cell under arid zone conditions of Ajmer

Maharshi Dayanand Saraswati University (2021)

Study of the impact of solar irradiance_dust accumulation_temperature variations and wind velocity on output power of silicon based photovoltaic solar cell under arid zone conditions of Ajmer

Panwar, Tulsi

Titre : Study of the impact of solar irradiance_dust accumulation_temperature variations and wind velocity on output power of silicon based photovoltaic solar cell under arid zone conditions of Ajmer

Auteur : Panwar, Tulsi

Université de soutenance : Maharshi Dayanand Saraswati University

Grade : Doctor of Philosophy (PhD) 2021

Résumé
The Indian energy sector is dominated by fossil fuels and thermal generation, particularly coal. Rajasthan, the largest state of India constitutes about 10.4% geo-graphical area of India.It faces two exceptional tasks in terms of power generation from the conventional sources : First, there are not many hydropower projects due to non-availability of large rivers ; second, as coal needs to be transported from other states, the transportation alone contributes to 50% cost of energy production. So, it’s very urgent for Rajasthan to move other energy sources such as solar energy.The source of solar energy the sun is nearly limitless and can be accessed anywhere on earth at one time or another. It is believed that in just six hours, the world’s deserts receive more energy from the sun than humans consume in a year.

Given that electricity produced by photovoltaic (PV) technology is already contributing to 1% of world electricity demand in a short period of time, proving that the technological challenges are surmounted. It is inevitable that this percentage is going to increase considerably. Rajasthan has vast stretches of desert land and nearly ten-month duration of sunny days in a year makes it best suited for solar power generation. Although sun energy is unlimited while a fraction of that energy finds its way to a solar panel and is converted into electricity, it isn’t a perfect energy swap. The amount of energy produced depends on a few things, like how efficient the panel is, its orientation towards the sun, and of course, the weather. In Desert areas the frequent dust storms and high concentration of aerosol particles enhances the dust deposition problem on solar panels. Dust deposition, bird droppings, or tree leaves accumulation on solar panels reduce the efficiency up to 50%, if not cleaned properly at least thrice a week and washed once a month. A quite good maintenance of solar panel is essential at all the locations of Rajasthan. Washing with unfiltered or well water may create unwanted water spots on panels and corrosion in aluminium frames of the panels, thus reducing the efficiency. The unreliability in solar power production due to short- or long-time power fluctuation and frequency or voltage fluctuation caused by bad weather or less availability of solar radiation creates a challenging task to integrate into power grid.

Till now, PV system has been designed for best energy yield by taking into consideration of irradiation and ambient temperature. Any type of climatic change causes changes in the solar radiations and in the ambient temperature, hence causing changes in the solar PV output performance. In this work, the effect of solar radiations on solar cell’s performance parameter open-circuit voltage Voc and short circuit current Ioc for different days of the month at a particular location in the Ajmer region is studied. As the temperature rises, due to environmental changes or heat produced by internal power dissipation during energy generation, the open circuit voltage (Voc) decreases. This in turn reduces the power output. In the same way, irradiance will also influence module efficiency with a decrease in sun radiation resulting primarily in a reduction in current and result in reduced power output.

Présentation et version intégrale (Shodhganga)

Page publiée le 23 janvier 2023