The energy demand in the country has been increasing very rapidly and it is very difficult to fulfil this increasing demand with the conventional methods of energy generation. So, the use of renewable sources for energy generation is increasing rapidly with the help of Indian government policies. Indian government has announced that it will generate 175 GW from renewable sources of energy by 2022, out of which 100 GW will be from solar energy. Solar energy is abundantly available throughout the country all around the year for generating electricity at the roofs of residential and commercial buildings. Indian government policies are also favouring generation from rooftop power plants, as a target of 40 GW has been set to be achieved by 2022. The solar power plants generate energy from the incident solar radiation on its PV panels and energy generation depends highly on the incident radiation. Due to the rotation of earth around its axis, the panels do not receive maximum and uniform radiation throughout the day; it results in the less power output from panel than the uniform radiation. This problem can be solved by moving the panel in the direction of sun with the movement of the sun throughout the day. In this paper, we have demonstrated a method to develop a solar tracking system for maximum utilization of solar energy. Here we have used a LDR sensor to detect the availability of sun maximum solar power, with the help of two DC-geared motors for dual axis solar tracking. The output energy has increased comparatively by using the dual axis tracking system. Keywords: Renewable energy, solar energy, solar photovoltaic, roof-top solar PV, solar tracking Cite this Article Rajshree, Jaiswal Ajay K, Jayswal Vijay K et al. Development of a Dual Axis Solar Tracking System Using LDR Sensor for Roof-Top Applications. Recent Trends in Sensor Research & Technology. 2016; 3(3): 21–26p.
