A New Maximum Power Point Tracking Approach for Partial Shading Conditions

Partial shading conditions may reduce the energy yield in PV systems due to poor MPPT algorithm or system configuration. The MPPT techniques using scanning approach are capable of tracking the global peak power but it results in loss of energy each time the scan is performed. In this paper we propose a new scanning MPP approach that changes the time-interval between scans adaptively based on the probability of a shift of operating point having occurred.