Design Of Dust Removal Brush For Photovoltaic Module And Study On Dust Removal Mechanism

In recent years,with the rapid development of society and the demand of economic growth,the consumption of energy is becoming more and more large.As a new green renewable energy,solar energy occupies a large proportion in the world power generation market.However,photovoltaic panels are placed outside for a long time.The accumulated dust on photovoltaic panels will shorten the service life and even seriously affect the efficiency of photoelectric conversion.In this paper,the mechanical structure and working parameters of the brush body of the sweeper are studied to improve the cleaning efficiency as the performance index.The dry dust brush structure of the cleaning car is further optimized through the fluid simulation calculation.The mathematical model of the working parameters is established through the experiment,and the optimum working parameters are obtained by using the MATLAB software.The specific working process and conclusions are as follows:Firstly,a systematic introduction of the dry dust brush structure designed by our group is introduced.Based on the analysis of the movement mechanism of dust particles and the demand of the actual power plant,the relevant requirements for the design of the new type of dust brush are put forward.According to the design requirements,the structure of the whole dry dust removal brush was modeled by Creo software.The structure of the dust removal brush is divided into dry dust cleaning and dust collecting part,the air inlet pipe part in the dust conveying and the three dust suction mechanism,respectively,and the design and type selection are carried out respectively.Secondly,the dry dust brush structure is further optimized through the fluid simulation calculation.Through the introduction of the relevant theoretical knowledge of the fluid structure,combined with the analysis of the principle of the work process of the dust brush,the key parameters in the next simulation calculation are prepared.The flow field simulation and visual analysis of the dust,dust and dust structure of the brush body are simulated and analyzed by the Fluent software.The distribution of velocity vector and pressure is obtained.Through the above analysis,the rationality of the structure parameters of the brush body is verified and the structural parameters are further optimized.On the basis of reasonable structural parameters,the working parameters of brushes are studied and optimized.Finally,the work parameters are optimized.On the basis of the ideal structural parameters,the preliminary working parameters are obtained by building the experimentalplatform.The rotational speed of the dry dust brush and the optimal range of two important working parameters along the photovoltaic panel are determined.Then,the MATLAB optimization toolbox is used to establish a real nonlinear programming mathematical model,and the optimal working parameters are obtained by calculation.The optimal working parameters are used in the optimized structure of the brush body.The experimental results show that the prototype is running smoothly,and the dust removal efficiency is high under the condition of no water and cleanser.It provides a theoretical basis for the clean maintenance of large-scale photovoltaic power stations,and has practical significance in engineering practice.