TITLE:
A Study on the Effects of Solar Tracking Systems on the Performance of Photovoltaic Power Plants
AUTHORS:
Shahriar Bazyari, Reza Keypour, Shahrokh Farhangi, Amir Ghaedi, Khashayar Bazyari
KEYWORDS:
Azimuth and Zenith Angles; Photovoltaic Farm; Single and Double Axis Sun Tracker Systems
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.2 No.4,
May
8,
2014
ABSTRACT: The use of renewable energy resources to
produce the electricity is a rising trend in various countries worldwide. This
is especially because these energies do not produce the greenhouse gases; therefore,
don’t become a destructive factor on the ozone layer and the environment.
Besides, the fossil energies are always exposed to price changes and will eventually
end, while the renewable energies don’t pose such problems and are freely
acquired from the nature. Some of the most important of these reproducible
energy resources are the energies of the wind and the solar energy. The
generation capability of a photovoltaic power plant is largely dependent on the
intensity of the sun radiation. On the other hand, the changing of position
causes the sun to have a variable shining intensity in different seasons and
different times of the year; therefore, some of the solar power plants possess
solar tacking systems. This paper studies the different types of photovoltaic
systems including fixed panel, photovoltaic farms equipped to the single axis
and double axis tracking systems and their effects on the performance of the
solar power plants. In order to determine the position of the sun in the sky,
the zenith and azimuth angles of it are used to extract the relations between
the different parameters of the sun radiation. The resulted parameters are used
in the modeling of the single axis and double axis systems. In the paper it is
utilized from the sun parameters in Qeshm Island of Iran in the summer of 2011.