Study on the Effects of Solar Illumination Conditions on the Temperature Rise of PV Grid-Connected Inverter
PV grid-connected inverters need to work for a long time in the sunlight-exposed environment,but there are almost no relevant studies on the impact of sunlight on the operation stability of PV grid-connected inverters,and there are no requirements for the testing and certification of PV grid-connected inverters in terms of light conditions.However,the operation and maintenance personnel of some photovoltaic power stations have found that PV grid-connected inverters will have load shedding and shutdown faults under strong sunlight conditions,and the problem of power abandonment and limitation caused by it has been paid more and more attention.In this paper,the data analysis of temperature rise of PV grid-connected inverter components under different irradiance of solar illumination found that,during the temperature rise test,the additional solar illumination applied to the PV grid-connected inverter temperature rise has an additional enhancement,and the higher the irradiance of solar illumination on the PV grid-connected inverter temperature rise has a greater impact.This paper can provide a reference for the selection,installation and power plant operation and maintenance of PV grid-connected inverters.