Study and analysis of zeta converter fed by solar photovoltaic system using PID controller

Abstract

This paper presents State Space Average technique for fourth order DC-DC Zeta converter in continuous conduction mode. The system is implemented by a non-isolated Zeta converter for Step Up and step-down output voltage in open loop system and in close loop system by using PID controller. The input voltage to Zeta converter is fed by Solar Photovoltaic Array, which depends on the irradiance and temperature. The gate pulse to the IGBT is given after comparing the output of PID controller with Sawtooth waveform. The open loop system and closed loop system of Zeta converter are compared for the constant output voltage across the RL load. Both systems are simulated in MATLAB/Simulink and results are presented.