INCREASING PHOTOVOLTAIC PLANTS POWER USING PID CONTROLLER DESIGN

Photovoltaic (PV) is system that provides electricity from solar energy. In this system, direct generation of electricity is provided using solar cells. Solar cell, being semiconductors, are made of silicon, the second common element in earth crust. When there solar is glinted to the surface of PV cell, potential different is generated between positive and negative electrodes and therefore a current is carried out and resulted power can be stored. Maximum power point tracking is an algorithm in charge controllers that is used for attaining maximum possible power from PV module. Voltage in which PV can deliver the maximum power is called maximum power point. Maximum power changes with radiation, environment temperature and cell temperature. Using an inteligent controller is one of the ways for achieving maximum power point. In this paper maximum power point tracking of PV array is investigated using intelligent controller and designing a PID controller.