Development of Automatic PV Power Pack Servo Based Single Axis Solar Tracking System

摘要

Solar Energy consists of abundant amount of energy. To utilize this energy for electrical applications PV panels were introduced. Panels can generate DC electricity directly through sunlight. Spectrum of sun is quite wide which varies according to the geographical location. To harness maximum amount of energy from available sunlight tracking of PV panel was introduced In this paper A PV power pack based single axis solar tracking system prototype is developed. The overall solar tracking system consists of a mechanism that enables the PV panels to follow or track the sun. The mechanical structure consists of one servo motor that drives the mechanism, LDR sensors for measuring light intensity and a programmable microcontroller responsible for giving electric signals to the motors in accordance to the sun angle in order to achieve solar tracking (keeping the PV panel perpendicular to the sunlight). Based on the system requirement tilt angle is provided of 25 angle southwards. The feedback control system operation is based on servo mechanism principles and the controller is responsible for the solar tracker motion. The controller coding and servo mechanism is simulated in PROTEOUS 7.