A modified incremental conductance algorithm for partially shaded PV array

Abstract

For a partially shaded PV array there will be several peaks in the Maximum Power Point (MPP) characteristics. The conventional Incremental Conductance (INC) algorithm cannot extract global maximum power point during shading. Therefore the INC algorithm is slightly modified to extract global maximum point during worst atmospheric conditions. Hybrid Cuk converter performance is better compared to Cuk and boost converters. The algorithm is experiment on Hybrid Cuk converter. This paper presents the performance of Cuk converter by applying modified INC algorithm to generate the switching pulses to extract maximum power when the panel is partially shaded. The results of the modified algorithm are compared with basic incremental conductance algorithm.