Impact of Uneven Shading by Neighboring Buildings and Clouds on the Conventional and Hybrid Configurations of Roof-Top PV Arrays

Partial shading is the commonly encountered scenario of building roof-top based PV arrays that mainly occur due to the shadow of the neighbouring buildings and clouds resulting in unexpected losses and deteriorated system performance. The arrays are connected in various configurations to enhance the...

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Bibliographic Details
Published in:IEEE access 2021, Vol.9, p.139059-139073
Main Authors: Satpathy, Priya Ranjan, Babu, Thanikanti Sudhakar, Shanmugam, Sathish Kumar, Popavath, Lakshman Naik, Alhelou, Hassan Haes
Format: Article
Language:English
Subjects:
and roof-top PV system
Array configurations
Arrays
Bridge circuits
Buildings
Clouds
Configurations
Hybrid power systems
Maximum power
mismatch loss
Optimization
partial shading
photovoltaic
power generation
Roofs
Shading
Topology
Voltage
Wires
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Summary:Partial shading is the commonly encountered scenario of building roof-top based PV arrays that mainly occur due to the shadow of the neighbouring buildings and clouds resulting in unexpected losses and deteriorated system performance. The arrays are connected in various configurations to enhance the system performance during shading. In this paper, various conventional and hybrid interconnection configurations based on series-parallel (SP), bridge-linked (BL), and total cross tied (TCT) topologies of the roof-top PV arrays are examined under various partial shading scenarios caused by the neighbouring building and clouds. The investigation is done for a 9\times 9 roof-top array in MATLAB/Simulink environment considering various comparison parameters. It has been found that during 1.23%, 7.40%, 11.11%, 17.75%, 18.51%%, 22.22%, and 24.69% of total array shading, SP generated the maximum power whereas, during 30.86%, 61.72% shading, TCT has the generated only a slightly higher power as compared to SP. Hence, the study concludes that the configurations have a puny effect on the power generation of the arrays during uneven shading patterns caused by buildings and clouds.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2021.3118357