The Behavior and Effect Studies of PV Cells under Partial Shading Conditions

Photovoltaic ( PV) cells are devices can convert sunlight

into electrical energy. They can effectively produce

the electrical energy under the uniform shading conditions.

Practically, the PV cells may operate under the shading of light

conditions. Therefore, this paper presents the behavior study

of PV cells under partial shading conditions that affect

the IV curve, PV curve, and the conventional maximum power

point tracking via the intensive time- domain simulation

using SIMULINK on MATLAB. The partial shading effects for

the series, parallel, and series- parallel connected PV cells are

investigated. The results show that the series connected

PV cells that operated under the partial shading conditions

cause the several peak points in the IV curve and PV curve.

Moreover, the conventional maximum power point tracking via

perturbation and observation ( P&O) method cannot track

the maximum power point for the partial shading conditions

The study results are useful for the future research.