Performance Improvement of Solar PV Maximum Power Point Tracking Using Sliding Mode Control Algorithm

The extraction of maximum power from solar photovoltaic (PV) is important for the performance improvement of the system. Maximum power point tracking (MPPT) algorithms are used to meet the above objective. In recent years, some control techniques along with MPPT are being investigated to further enhance the performance of the system. Among these control methods, a sliding mode control (SMC) technique is integrated to the power converter along with classical MPPT methods like perturb and observe (PO). In this paper, we compare the voltage level, power output and voltage tracking of the system with and without SMC. The system is modelled and simulated in the MATLAB/Simulink. The SMC gives fast convergence to the MPPT to track the reference voltage and gives maximum power output without much oscillation.