Simulation and experimental verification of MPPT algorithms for partially shaded stand alone photovoltaic systems

Abstract

The characteristics of a photovoltaic (PV) array are affected by temperature, solar insolation, and shading. In this paper each cascaded H-bridge inverter (CHBMLI) unit is connected to an individual PV module through an interleaved soft switching boost inverter (ISSBC) and controlled with incremental conductance (INC) and adaptive neuro-fuzzy inference system (ANFIS) maximum power point techniques, is studied and simulation and experimental implementation Matlab/Simpowersystem software. The generated PV voltages of each PV module are unequal. In this topology the selective harmonic elimination (SHE) PWM, with a trained ANN sub system for a single phase CHBMLI to generate balanced output voltage even under partially shadowed condition of PV modules is analyzed. The results are evaluated by simulation and experimental implemented on a 300 W PV panel prototype. The simulation and hardware results show that ANFIS algorithm is more efficient than the INC algorithm.