MPPT Control of Standalone -PV System With Battery as an Energy Storage Element

Abstract

In this project the main focus is on using MPPT control of standalone-PV with battery to supply power to the loads. The system comprises of a battery, PV panel and a boost converter circuit. The project consists of both software and hardware design. The boost converter tracks the maximum power point(MPP) of the PV panel by controlling the duty cycle and giving it as gate pulse to the boost converter whereas the function of battery is to maintain a constant dc-link voltage. The inverter is used to supply ac power to the loads. The filter is also designed to reduce the harmonics and to obtain perfect sinusoidal output, which may otherwise damage the loads, so that total harmonic distortion is according to IEEE STANDARD. Perturb and observe method is used as MPPT (Maximum Power Point Tracking) control algorithm. MATLAB SIMULINK is used to create a simulation model of the Standalone-PV system and the output is verified. After verification of simulation, the whole set up is designed in hardware and it is tested to run according to the desired parameters.