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CivilNJ

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  1. I am definitely missing something and am under the gun now. Throw out my original screen grabs. I now have 7 separate breakdowns of the original data. SolarEdge 33k US Inverter with P700 Optimizer and Hyundai HiS-S350TI Modules My strings/tilts are as follows: String 1: 33 modules @ 5 degrees String 1: 6 modules @ 18 degrees String 2: 14 modules @ 18 degrees String 2: 26 modules @ 5 degrees String 3: 20 modules @18 degrees String 3: 18 modules @ 5 degrees String 3: 2 modules @ 18 degrees I have two Orientations set up - 1 for 5 degrees and one for 18 degrees I have 7 sub-arrays representing each of these string parts noted. I have fractional inputs checked with the total or all seven = 1.0 inverter (0.2, 0.1,.., etc.) I have tried setting each sub-array to the proper orientation for that section and tried it with the Mixed #1 and #2 settings. Orientation parameters Field type: Several orientations 2 orientations: tilt/azim = 5°/0°, 18°/0°, Compatibility between System defintions Orientation #1 tilt/azim = 5° / 0° 3 sub-arrays PNom = 37 kWp, modules area = 207 m² Orientation #1: No Shading field defined Orientation #2 tilt/azim = 18° / 0° 4 sub-arrays PNom = 41 kWp, modules area = 227 m² Orientation #2: No Shading field defined System parameters 7 sub-arrays defined Sub-array #1 5 Degree String 1 Orientation #1Tilt/Azimut = 5.0° / 0.0° PV modules: 1 strings of 34 modules in series, 34 total Pnom = 350 Wp Pnom array = 12 kWp, Area = 67 m² Inverters (33.3 kWac) 2 MPPT inputs, Total 7 kWac, The inverter power is strongly undersized. Sub-array #2 18 Degree String 1 Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 30 modules in series, 30 total Pnom = 350 Wp Pnom array = 11 kWp, Area = 59 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Sub-array #3 18 Degree String 2 Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 34 modules in series, 34 total Pnom = 350 Wp Pnom array = 12 kWp, Area = 67 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Sub-array #4 5 Degree String 2 Orientation #1Tilt/Azimut = 5.0° / 0.0° PV modules: 1 strings of 36 modules in series, 36 total Pnom = 350 Wp Pnom array = 13 kWp, Area = 70 m² Inverters (33.3 kWac) 2 MPPT inputs, Total 7 kWac, The inverter power is strongly undersized. Sub-array #5 18 Degree String 3a Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 32 modules in series, 32 total Pnom = 350 Wp Pnom array = 11 kWp, Area = 63 m² Inverters (33.3 kWac) 2 MPPT inputs, Total 7 kWac, The inverter power is strongly undersized. Sub-array #6 5 Degree String 3 Orientation #1Tilt/Azimut = 5.0° / 0.0° PV modules: 1 strings of 36 modules in series, 36 total Pnom = 350 Wp Pnom array = 13 kWp, Area = 70 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Sub-array #7 18 Degree String 3b Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 20 modules in series, 20 total Pnom = 350 Wp Pnom array = 7.0 kWp, Area = 39 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Am I missing something very obvious or it this not the correct logic? Any assistance appreciated. Jim
  2. It seems like there is more to this than simply turning on the Fractional Inputs. I had originally tried to analyze this with only one string on multiple tilts - oops. Now including all 3 strings to this inverter. I just haven't done anything this complex before. When you enter the planned power, it sets the Fractional to 0.1 - does that need to be set to the actual fraction of the array for each segment? Orientation parameters Field type: Several orientations 2 orientations: tilt/azim = 5°/0°, 18°/0°, Compatibility between System defintions Orientation #1 tilt/azim = 5° / 0° 3 sub-arrays PNom = 37 kWp, modules area = 207 m² Orientation #1: No Shading field defined Orientation #2 tilt/azim = 18° / 0° 4 sub-arrays PNom = 41 kWp, modules area = 227 m² Orientation #2: No Shading field defined System parameters 7 sub-arrays defined Sub-array #1 5 Degree String 1 Orientation #1Tilt/Azimut = 5.0° / 0.0° PV modules: 1 strings of 34 modules in series, 34 total Pnom = 350 Wp Pnom array = 12 kWp, Area = 67 m² Inverters (33.3 kWac) 3 MPPT inputs, Total 10 kWa Sub-array #2 18 Degree String 1 Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 30 modules in series, 30 total Pnom = 350 Wp Pnom array = 11 kWp, Area = 59 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Sub-array #3 18 Degree String 2 Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 34 modules in series, 34 total Pnom = 350 Wp Pnom array = 12 kWp, Area = 67 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Sub-array #4 5 Degree String 2 Orientation #1Tilt/Azimut = 5.0° / 0.0° PV modules: 1 strings of 36 modules in series, 36 total Pnom = 350 Wp Pnom array = 13 kWp, Area = 70 m² Inverters (33.3 kWac) 2 MPPT inputs, Total 7 kWac, The inverter power is strongly undersized. Sub-array #5 18 Degree String 3a Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 32 modules in series, 32 total Pnom = 350 Wp Pnom array = 11 kWp, Area = 63 m² Inverters (33.3 kWac) 2 MPPT inputs, Total 7 kWac, The inverter power is strongly undersized. Sub-array #6 5 Degree String 3 Orientation #1Tilt/Azimut = 5.0° / 0.0° PV modules: 1 strings of 36 modules in series, 36 total Pnom = 350 Wp Pnom array = 13 kWp, Area = 70 m² Inverters (33.3 kWac) 2 MPPT inputs, Total 7 kWac, The inverter power is strongly undersized. Sub-array #7 18 Degree String 3b Orientation #2Tilt/Azimut = 18.0° / 0.0° PV modules: 1 strings of 20 modules in series, 20 total Pnom = 350 Wp Pnom array = 7.0 kWp, Area = 39 m² Inverters (33.3 kWac) 1 MPPT inputs, Total 3 kWac, The inverter power is strongly undersized. Shading scene parameters No shading scene defined
  3. it is 41.65 kW DC and a 33.3 inverter, so yes. I will try turning on the fractional usage. Thank You.
  4. I am trying to understand/run an analysis of a rooftop system where the designer is using SolarEdge 33k US Inverter with P700 Optimizer and Hyundai HiS-S350TI Modules . Using PVsyst version 6.63 The design jumps to two different tilt scenarios on one string and I believe that I have set it up properly but it seems to be unable to run the Simulation because one of the Sub-Arrays is too small (inverter is strongly oversized message). I have attached two screen grabs in the hopes that someone can direct me properly with this. Am I missing something or is this even possible? I just got off the phone with SolarEdge and the multi-tilt option shouldn't be an issue. I must be missing something in the PVsyst program.
  5. I tried using the new NSRDB Data Viewer and located my site, went to Data Download (Point) and selected MTS1 and MTS2 tabs to retrieve TMY2 or TMY3 files. I receive a download but I receive format errors on import into PVsyst. I also noted that I do not see this option (from the Help File) - "Import Meteo Data"/”NREL National Solar Resource Database” . Was this removed in version 6.34? I am using US TMY2 and TMY3 and it throws errors. Error: Conversion error of string "Source" => LongInt and then it continues with additional ones for "State", etc. I assume that something is incorrect in the header but I want to be sure that I am using the proper file and import option.
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