Infinitech Posted January 25, 2019 Report Share Posted January 25, 2019 Hello, Could you say what is the methodology for calculating the minimum voltage for MPP?? I add print screen for calcuation made by PVSol for Fronius ECO 27 and LONGi HPH 320 (both products from build-in database) Why the min MPP is so low? My reasoning: Tvoc = -0,286 deltaT = 70-25 = 45 45*(-0,286) = ~ -13% Vmpp = 33,9 Vmpp at 70°C = 33,9 - (33,9* 0,13) = 33,9 - 4,41 = 29,49 20*29,49 = 589,8 Calculation from Fronius Solar Configurator: Quote Link to comment Share on other sites More sharing options...
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