harwinder333 Posted June 4, 2018 Share Posted June 4, 2018 We generally get loss values in loss diagram positive. Sometimes i get loss value of PV loss due to irradiance negative means adds energy, which is due to pan file of inverter. Is there any issue in pan file or it is normal and how? Link to comment Share on other sites More sharing options...
André Mermoud Posted June 7, 2018 Share Posted June 7, 2018 The Irradiance loss is related to the low-light efficiency behavior of your PV module. The loss (or eventual gain) is calculated at each step of the simulation. Now the losses will diminish (or even become gains) when: - The climate is extremely sunny (many high irradiance hours)- The low-light performance of the module is high. This performance is related to the Rserie choice. If you are using PAN files from a manufacturer, be aware that some manufacturers may increase the Rserie for increasing this low-light efficiency. See our FAQ How are specified the PAN files in the PVsyst database ? Link to comment Share on other sites More sharing options...
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