Abstract
<jats:p>In recent days most of the people are convinced that Solar PV cell technology is the best solution for future energy supply. The crystalline silicon cells have been a workhorse of photovoltaic industry for a long time. Hotspot phenomenon emerges in solar power plant frequently, although the hotspot endurance tests for extreme outdoor condition are used for qualification tests procedures, and bypass diodes are also built in silicon PV modules. In earlier there are several approaches to detect the hotspot such as infrared camera and theoretical comparison of currents etc. The main objective of this work is to identify the hotspot and to limit the reverse current to reduce power loss by using electronic equipment. Isolators are used to trip the solar PV module which is under hotspot and that panel restart working after hotspot is removed. Due to this the permanent damage of the cell is avoided and the reliability of the PV system can be improved.</jats:p>