Jen H Posted May 17, 2018 Share Posted May 17, 2018 Hello, I'm seeking clarification on the relationship between Maximum current per MPPT and Min. Voltage for PNom in the OND file - 'main parameters' tab.When I enter the Maximum current per MPPT (22A), the Min. voltage for Pnom automatically changes from N/A to 463V. Where does this value come from and what is its significance? The inverter datasheet I'm using has the following datasheet parameters: Max. Input Voltage - 1100VMax current per MPPT - 22AMax short circuit current per MPPT - 30AStart voltage - 200VMPPT operating voltage range - 200-1000VRated input voltage - 600VMax. number of inputs - 12VNumber of MPP trackers - 6 Nominal AC power 60 kVA As an aside, if the parameter is not in bold type does this mean that it doesn't matter for the purposes of the simulation?Any clarification would be much appreciated! Thanks,Jen Link to comment Share on other sites More sharing options...
André Mermoud Posted June 2, 2018 Share Posted June 2, 2018 The Minimum voltage for getting Pnom is equivalent to an input current limitation. By defining VminPNom, the minimum voltage for attaining PNom, we have: - Imax = Pnom (DC) / VminPNom, - where Pnom(DC) = PnomAC / Efficiency. If this value is specified in the inverter, it is obviously taken into account in the simulation. Everything is explained in detail in the contextual Help "Physical models used > Grid inverter > Inverter Operating Limits" and other topics. Link to comment Share on other sites More sharing options...
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