Journal
EPJ PHOTOVOLTAICS
Volume 9, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/epjpv/2018005
Keywords
solar eclipse; photovoltaics; residential PV; solar irradiance; astro imaging
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The power output of a 4.85kW residential photovoltaic (PV) system located in Rochester, NY is monitored during the partial solar eclipse of August 21, 2017. The data is compared with the data on a day before and on the same day, a year ago. The area of exposed solar disk is measured using astrophotography every 16 s of the eclipse. Global solar irradiance is estimated using the eclipse shading, time of the day, location coordinates, atmospheric conditions and panel orientation. A sharp decline, as expected in the energy produced is observed at the time of the peak of the eclipse. The observed data of the PV energy produced is related with the model calculations taking into account solar eclipse coverage and cloudiness conditions. The paper provides a cohesive approach of irradiance calculations and obtaining anticipated PV performance.
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