A novel design and construction of 8 4kwp sensorless dual axis solar pv tracking system using low powered drives

Abstract

The revolution in technological innovation in recent years has newlineimposed many challenges to the electrical power industry through an increase newlinein the manufacturing and product-based industries. This has resulted in the newlinehigh demand for the electrical energy supply. Renewable energy resources are newlinepreferred over conventional energy for its pollution-free environment. Among newlinethe various renewable energy resources, solar energy attains much interest for newlineits compatibility according to the user applications. Photovoltaic cells are newlineused to generate solar energy from the Sun. However, obtaining the maximum newlinepower from the photovoltaic (PV) cells is highly challenging due to factors newlinesuch as photovoltaic cell efficiency, tracking the Sun directly over time and newlineseasonal changes in the Sun position. The efforts are being made to improve newlinethe PV cell efficiency by choosing the appropriate molecule structure of the newlinematerials and maintaining the temperature coefficient of the cell. The solar newlinetrackers are used to rotate the solar panel towards the position of the Sun by newlineminimizing the angle of the incident between the incoming light and the solar newlinepanel. For tracking the Sun position, a single-axis and dual-axis solar PV newlinetracking systems are used. Single-axis system supports the rotation of the PV newlinepanels to move from East to West direction. However, a dual-axis system is newlineused to change the altitude/tilt of the panel along with the rotation of the newlineazimuth angle (the angular distance from a north or south point of the horizon newlineto the intersection with the horizon of a vertical circle passing through a given newlinecelestial object). newline newline