Microprocessor control system for maximum power operation of PV arrays

Abstract

The proposed PV system consists of four subsystems; the PV array subsystem, the power conditioning subsystem, the control subsystem, and the DC load subsystem. Experimental realization of the proposed system is carried out. The control of the switching duty cycle of the used DC–DC converter is achieved through the 180° algorithm, where a conventional PI controller is used to provide the implemented system with the suitable control action. Experimental results are found to satisfactorily track the MPP of the PV array. Copyright © 1999 John Wiley & Sons, Ltd.