Title: A Review of Sliding Mode Controller application for Maximum Power Point Tracking in Photovoltaic Systems
Authors: M.Vinay Kumar, U.Salma, S.Hemanth
Volume: 2
Issue: 8
Pages: 219-224
Publication Date: 2018/08/28
Abstract:
This paper reviews the application of sliding mode control (SMC) concept for maximum power point tracking (MPPT) in a photovoltaic (PV) system for standalone configuration as well as grid connected system for a stable operation and a higher stability. The working of SMC is mostly subjective by choosing of sliding surface. This model tracks the voltage reference obtained by the MPPT algorithm irrespective of the changes in the irradiance and temperature. The values of second-order filter and the sliding surface are numerically calculated by solving the set of non-linear equations. SMC implementation has to meet three conditions i) Hitting condition ii) Existence condition iii) Stability condition. SMC applied to with MPPT has several advantages like less settling time, no overshoot, fast tracking response, simple implementation by means of conventional converters, constant switching frequency, less sensitivity to parameter variation, better reference tracking control and maximizes power output of the PV array, hence enhances the efficiency of the PV system. To demonstrate the effectiveness and applicability of the control strategy, simulation is carried out by MATLAB/SIMULINK simulation. The simulation results show acceptable effectiveness of controller by conducting the simulation under varying atmospheric conditions and changing load conditions