期刊
SOLAR ENERGY
卷 241, 期 -, 页码 553-563出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2022.06.024
关键词
Distributedphotovoltaic; Water-free; Cleaningrobot; Water-scarce; Negativepressureadsorption
资金
- National Key R&D Program of China [2018YFB1500800]
- Science and Technology Development Program of Jilin Province, China [20190302079GX]
- Science and Technology Project of State Grid Corporation of China [SGTJDK00DYJS2000148]
This paper proposes a water-free cleaning robot for dust removal from PV panels of distributed PV systems in water-scarce areas. The robot is optimized based on force analysis and safe working conditions, and equipped with a combined dust removal system consisting of a rolling brush and negative pressure. Experimental results show that the robot can effectively remove dust from the panels and improve the efficiency of PV systems.
Distributed photovoltaic (PV) power stations are installed in high-elevation locations and various configura-tions. Traditional manual cleaning methods suffer from low cleaning quality, low efficiency, and high water consumption, making it difficult to achieve consistent cleaning. This paper proposes a novel water-free cleaning robot for dust removal from PV panels of distributed PV systems in water-scarce areas. A force analysis is conducted, and safe working conditions are considered to ensure the robot can safely clean PV panels installed at a large angle. The material, structure, and sealing device of the robot are optimized based on the carrying capacity of the PV system and the operating efficiency. A combined dust removal system consisting of a rolling brush and negative pressure is developed to prevent dust raising during cleaning. Experiments are carried out on a 2-kW distributed PV system on the roof of a university in Northeast China to verify the effectiveness of the negative pressure adsorption system and the obstacle crossing and cleaning abilities of the robot. The results show that the water-free cleaning robot can effectively remove dust from the panels. The average dust cleaning rate is 92.46%, and the increase rate of the PV efficiency ranges from 11.06% to 49.53%. In addition, the robot has a small volume and weight and is more suitable than manual or mechanical cleaning for dust removal from PV panels of distributed PV systems in water-scarce areas.
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