MGLopez Posted September 23, 2022 Share Posted September 23, 2022 Hello, Here is the description of the PV system: Paramètres d'orientation Type de champ: Plan incliné fixe Inclinaison plan/azimut = 25°/18° Compatibilité entre système et ombrages Orientation du système compinclin/azim = 25° / 18° 3 sous-champs PNom = 112 kWp, surface de modules = 535 m² champs ombrages 3D 4 tables, : , surface brute totale , . 739 m² Paramètres du système 3 sous-champs définis Sous-champ #1 Shed 6 Modules PV: 4 strings of 23 modules in series, 92 total Pnom = 405 Wc Pnom array = 37 kWc, Area = 178 m² Onduleurs (110 kWac) 4 entrées MPPT, Total 35 kW Sous-champ #2 Shed 7 Modules PV: 4 strings of 23 modules in series, 92 total Pnom = 405 Wc Pnom array = 37 kWc, Area = 178 m² Onduleurs (110 kWac) 4 entrées MPPT, Total 38 kW Sous-champ #3 Shed 8 Modules PV: 4 strings of 23 modules in series, 92 total Pnom = 405 Wc Pnom array = 37 kWc, Area = 178 m² Onduleurs (110 kWac) 4 entrées MPPT, Total 35 kW I removed the shading scene description, suspecting it has no impact on the issue. I try to use one single invertor Sunny Tripower STP 110-60-Core2, with 12 mppt to accept the 3 sub-arrays. I manage to assign only Shed 6 and Shed 7, so 8 mppt, and the Shed 9 is greyed so I cannot add it up to the configuration. Checking Auto-equal Pnom or not does not change the fact that Shed 9 is out of reach. Furthermore, I do not understand why the Pnom/MPPT figures do not match the actual hereabove given description, in the Power sharing dialog box. It shows the following : - Shed 6 => 8.871 kW/MPPT, 8.06%Pnom, - Shed 7 => 9.462 kW/MPPT, 8.60%Pnom As both strings have the same amount of modules, one should read 9.315kW/MPPT Thanks in advance for your help. Link to comment Share on other sites More sharing options...
Lazare Fesnien Posted September 26, 2022 Share Posted September 26, 2022 Hi, The power isn't identical (35 and 38 kW) this explains the difference Pnom/MPPT. To better help you we would need to analyze the complete project. You can send it to us at support@pvsyst.com Link to comment Share on other sites More sharing options...
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