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

IEEE Access

Sathish Kumar Shanmugam¹  Priya Ranjan Satpathy²  Lakshman Naik Popavath³  Hassan Haes Alhelou⁴  Thanikanti Sudhakar Babu⁵ 

[1] Anusandhan (Deemed to be University), Bhubaneswar, India;Department of Electrical Engineering, ITER, Siksha &x2018;Department of Electrical and Electronics Engineering, Chaitanya Bharati Institute of Technology, Hyderabad, India;Department of Electrical and Electronics Engineering, M. Kumarasamy College of Engineering, Karur, India;O&x2019;

关键词: Array configurations;    mismatch loss;    partial shading;    photovoltaic;    power generation;    and roof-top PV system;   

DOI  :  10.1109/ACCESS.2021.3118357

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown