Although solar photovoltaic modules have been rigorously tested in the production process, they are still inevitably damaged during transportation, installation and operation, such as cracked or damaged solar panels and the like. Failure to replace them in time will greatly reduce the system efficiency , And even cause system failure.
Current monitoring methods include thermal imaging and (field) excitation luminescence detection, but each has significant application constraints. Thermal imaging can only be used in daylight with an energy density of more than 700 W / m2 Conditions, and field-excited luminescence detection technology can only be used at night under low light conditions.
The Institute of Photovoltaics at the University of Stuttgart, Germany, has partnered with companies to develop a new monitoring technology called DaySy, a new technology that enables real-time monitoring of solar photovoltaic devices by measuring the field excitation luminescence and photoexcitation luminescence intensity of solar photovoltaic modules Of the state of the work in 30 seconds to obtain monitoring results to determine the solar PV modules are intact and can identify common types of failures, such as the fall of the wires between the solar panels, the plate surface cracks, the panel appears photoelectric conversion failure The site, etc., has a wide range of applications.
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5.Before deliveyr we will do welding and leaking test
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