Design of photovoltaic system using buck-boost converter based on MPPT with PID controller

Abstract

Different models of the PV system containing many techniques of DC-DC converter are applied in this paper such as, buck converter, boost converter and buck-boost converter which are inserted to be close the power between PV array and load by varying its duty cycle, it is named maximum power point tracking (MPPT). This paper introduces four different techniques of the DC-DC converter controlled by MPPT. The first configuration is proposed as composing PV module connected to buck-boost converter controlled via incremental conductance MPPT algorithm, the system includes PID controller to reduce the error of output voltage. The second model is as the first without PID controller. The last two systems consisting of boost converter with MPPT control and with PWM technique. All studied methods are pretended by using Matlab/Simulink.