MarcoMalagnino Posted January 12, 2015 Share Posted January 12, 2015 Dear Mermoud,I have noticed that the ac cable losses, as well as the external transformer losses, depend in PVsyst on the Pdc of the pv generator defined in the simulation through the definition of the loss fraction coefficient. In order to calculate this losses you consider the Pac as follow: Pac(STC) = Pdc(STC) x european efficiency of the inverter. Now my questions: which is the Pac(STC) I have to use for the definition of these losses? For what I know, the design of the ac cable is done considering the maximum power from the inverter (or from the transformer, if it is a central inverter with transformer) and the ac voltage. Why don't you take into account the inverter limit and then the inverter maximum power as Pac(Stc) of the system? I know that it is just a definition problem but it can cause different losses according to the different interpretation of the Pac(STC). Thanks in advance.Best reegards,Marco Link to comment Share on other sites More sharing options...
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