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Title:
 
Impact of Dust on PV Performance in Nigeria
 
Author(s):
 
Y. N. Chanchangi, A. Ghosh, T.K. Mallick, S. Sundaram
 
Keywords:
 
Monitoring, Optical Losses, Performance, Polycrystalline Silicon (Si), Soiling, System Performance
 
Topic:
 
PV Systems – Modelling, Design, Operation and Performance
Subtopic: Operation, Performance and Maintenance of PV Systems
Event: 38th European Photovoltaic Solar Energy Conference and Exhibition
Session: 5CV.2.9
 
Pages:
 
1196 - 1201
ISBN: 3-936338-78-7
Paper DOI: 10.4229/EUPVSEC20212021-5CV.2.9
 
Price:
 
 
0,00 EUR
 
Document(s): paper, poster
 

Abstract/Summary:


This study investigates the impact of dust on polycrystalline silicon module's performance, and a 1MW solar farm developed using the same type of PV device in a city categorised as one of the most polluted cities in the region. The PV module's optimal performance was characterised using PASAN Solar Simulator prior to ambient exposure. A PV200 and survey 200R were employed for weekly performance measurement for seventeen months (date- date), and device performance was examined from sunrise to sunset at the end of the exposure. Transmission optical losses were determined to relate and validate losses by exposing low iron glass coupons considering monthly, seasonal, annual variation. The effectiveness of the employed brush cleaning mitigation approaches in the solar farm was examined against self–cleaning another approach. The findings reveal 65% Isc and 66% Impp decrement due to soiling on the modules. The outcome shows a 70.2% yield loss and a 71% efficiency drop. A wide variation of performance losses was recorded between different months and seasons in 2021, and the dry season presented the most alarming rates. The most significant power output loss recorded on the 1 MW installation was as high as 88%. The finding shows self-cleaning provided required preventive and restorative mitigation but appears to be very expensive. Although the employed brush cleaning mitigation in the studied region does not provide the required effectiveness, its less expensive property made it suitable to be applied.