Methods to remove dust deposits by high-speed airflow have significant potential applications,with optimal design of flow velocity being the core technology.In this paper,we discuss the wind speed required for particl...Methods to remove dust deposits by high-speed airflow have significant potential applications,with optimal design of flow velocity being the core technology.In this paper,we discuss the wind speed required for particle removal from photovoltaic(PV)panels by compressed air by analyzing the force exerted on the dust deposited on inclined photovoltaic panels,which also included different electrification mechanisms of dust while it is in contact with the PV panel.The results show that the effect of the particle charging mechanism in the electric field generated by the PV panel is greatly smaller than the effect of the Van der Waals force and gravity,but the effect of the particle charged by the contact electrification mechanism in the electrostatic field is very pronounced.The wind speed required for dust removal from the PV panel increases linearly with the PV panel electric field,so we suggest that the nighttime,when the PV electric field is relatively small,would be more appropriate time for dust removal.The above results are of great scientific importance for accurately grasping the dust distribution law and for achieving scientific removal of dust on PV panels.展开更多
光伏和风电一体化系统可以提高可再生能源的利用效率,降低能源成本。文章重点探讨了该系统中电源管理与电子电路设计的关键技术。针对最大功率点跟踪(Maximum Power Point Tracking,MPPT)算法,比较了传统方法与基于机器学习的新型算法,...光伏和风电一体化系统可以提高可再生能源的利用效率,降低能源成本。文章重点探讨了该系统中电源管理与电子电路设计的关键技术。针对最大功率点跟踪(Maximum Power Point Tracking,MPPT)算法,比较了传统方法与基于机器学习的新型算法,并评估了其性能指标。在并网逆变器设计和储能系统集成方面,深入分析主要拓扑结构、关键参数优化以及经济性。通过一个典型工程案例,评估了系统整体性能和经济环境效益。该研究为光伏和风电一体化系统的优化设计提供了重要技术支持。展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.12064034)the Leading Talents Project of Science and Technology Innovation in Ningxia Hui Autonomous Region,China(Grant No.2020GKLRLX08)+1 种基金the Natural Science Foundation of Ningxia Hui Autonomous Region,China(Grant Nos.2022AAC03643 and2022AAC03117)the Major Science and Technology Project of Ningxia Hui Autonomous Region,China(Grant No.2022BDE03006)。
文摘Methods to remove dust deposits by high-speed airflow have significant potential applications,with optimal design of flow velocity being the core technology.In this paper,we discuss the wind speed required for particle removal from photovoltaic(PV)panels by compressed air by analyzing the force exerted on the dust deposited on inclined photovoltaic panels,which also included different electrification mechanisms of dust while it is in contact with the PV panel.The results show that the effect of the particle charging mechanism in the electric field generated by the PV panel is greatly smaller than the effect of the Van der Waals force and gravity,but the effect of the particle charged by the contact electrification mechanism in the electrostatic field is very pronounced.The wind speed required for dust removal from the PV panel increases linearly with the PV panel electric field,so we suggest that the nighttime,when the PV electric field is relatively small,would be more appropriate time for dust removal.The above results are of great scientific importance for accurately grasping the dust distribution law and for achieving scientific removal of dust on PV panels.
文摘光伏和风电一体化系统可以提高可再生能源的利用效率,降低能源成本。文章重点探讨了该系统中电源管理与电子电路设计的关键技术。针对最大功率点跟踪(Maximum Power Point Tracking,MPPT)算法,比较了传统方法与基于机器学习的新型算法,并评估了其性能指标。在并网逆变器设计和储能系统集成方面,深入分析主要拓扑结构、关键参数优化以及经济性。通过一个典型工程案例,评估了系统整体性能和经济环境效益。该研究为光伏和风电一体化系统的优化设计提供了重要技术支持。
