In order to increase the efficiency of PV system, it is generally used three methods, the first is the increasing of the solar cell efficiency, the second is the energy conversion system included MPPT control algorithm and the third is the using solar tracking system. In solar tracking system, it is used DC motors, special motors like step motors, servo motors, real time actuators, to operate moving parts. DC motors are normally used to operate solar tracking system but it is highly expensive to maintain and repair. In this paper, solar tracking system is proposed. Proposed system designed as the normal line of the solar cell always runs parallel the ray of the sun. This paper presents the development of an effective approach for design, simulation and control of a Stand-alone Photovoltaic (PV) power system elements which are; proposed solar tracking system uses DC motor which is controlled by a program made by Programmable Logic Controller (PLC), a battery charger controller which is programmed by a microcontroller. Finally, a comparison between fixed PV power systems and a tracking PV power system is made. |
