MATLAB BASED COMPARATIVE STUDIES ON SELECTED MPPT ALGORITHMS FOR SPV SYSTEM

Govardhan Rathod, Mahesh Gorawar, P.P.Revankar, P.G.Tewari

Abstract: The present work illustrates the development of MATLAB simulation model to compare execution efficiency and accuracy for the perturbation and observation, incremental conductance and hill climbing Maximum Power Point Tracking (MPPT) algorithms applied to 70 Wp Solar Photo-voltaic(SPV) module. The widely used MPPT algorithms with reference to SPV system are evaluated based on MATLAB developed by combining the models of established solar module with the algorithms of perturbation and observation (P&O), incremental conductance (INC) and hill climbing (HC). The model is based on mathematical equations and is described through an equivalent circuit including a photocurrent source, a diode, a series resistor and a shunt resistor. The developed model allows the prediction of PV cell behavior under different physical and environmental parameters. MATLAB coding has been done to find the maximum power output, Pm, and voltage at maximum power output, Vm, of solar module. The system is simulated under different climate conditions and MPPT algorithms. According to the comparisons of the simulation results, it can be observed that the photovoltaic simulation system can track the maximum power accurately using the three MPPT algorithms discussed in this work. Incremental conductance MPPT algorithm possesses fast dynamic response and well regulated PV output power than P&O and hill climbing algorithm.

Keywords: Maximum power point tracking (MPPT), perturbation and observation, incremental conductance, hill climbing and MATLAB

DOI: https://doi.org/10.15623/ijret.2014.0307002