Partial shading condition is an unavoidable issue for photovoltaic systems. This condition affects the performance of the photovoltaic systems. An important effect of the partial shading condition is causing power losses and reducing the power efficiency. In this paper, different array structures with different types of connections between the photovoltaic modules have been investigated. Series-Parallel (SP), Total-Cross-Tied (TCT), Bridged-Linked (BL), and Honey-Comb (HC) and hybrid connection such as BL-TCT, HC-TCT, and SP-TCT have been presented and investigated. In order to analyze the mentioned structures, a 4∗4 photovoltaic array including 16 photovoltaic modules under partial shading condition has been tested in MATLAB / Simulink environment. In these analysis, the performance of different structures has been investigated to reach the maximum power. The simulation results show the excellent performance of the TCT structure in extracting the maximum power from the photovoltaic array.