TITLE:
Effects of the Shading Rate on the Electrical Parameters of CIGS-Based Solar Modules
AUTHORS:
El Hadji Abdoulaye Niass, Papa Touty Traore, Awa Dieye, Oumar Absatou Niasse, Pierre Tavarez, Nacire Mbengue, Zakaria Makir, Zouhair Sofiani, Bassirou Ba
KEYWORDS:
Modulus, Shading Rate, Electrical Parameters, Mask
JOURNAL NAME:
Energy and Power Engineering,
Vol.13 No.12,
December
31,
2021
ABSTRACT: The aim of this article is to study the effects of the shading rate on
the electrical performance parameters of CIGS PV modules. The study concerns a
new flexible CIGS type photovoltaic module with a power of 90 W,
manufactured by the company Shenzhen Shine Solar Co., Ltd. This
module, reference SN-CIGS90, is tested under the initial conditions to ensure
its correct operation and to determine the initial values of the electrical
parameters before shading. After this characterization test, the module is
exposed under the actual operating conditions of the Renewable Energies Study
and Research Center (CERER), located in Dakar, then 4 types of shading are
performed with the same mask: partial shading 25% partial shading, 50% partial
shading, 75% partial shading, and 100% full shading. The variation rates
obtained on the experimental values of the 4 types of shading carried out determine
that the shading phenomenon constitutes a factor that influences negatively on
the electrical parameters of a CIGS-based PV module. Indeed, for 25% of the
surface of the shaded module, there is a reduction of 58.139% of the maximum
power and of 60.507% of the efficiency and for shading of 100%, the module
loses 84.436% of its maximum power and 84.135% of its performance.