Design and Implementation of Digitally Controlled Photovoltaic Maximum Power Tracking System

Abstract

In this paper, the design of controller that realizes the operation of PhotoVoltaic (PV) panel at its maximum power point tracker (MPPT) by means of microcomputer ( microcomputer- based MPPT) and then examine the efficiency of system controller. The maximum power point tracker system used consists mainly of solar panel (the source), DC/DC converter (the load conditioner), the microcomputer ( proceeds the data and execute the MPPT algorithm), the data acquisition ( acquires the real current and voltage from the panel), and the load. The over all system operation is implemented practically using the most popular three control algorithms (P&O, Inc-Cond., and Power derivation), and the obtained results demonstrate the reliability of the control system.