matthew.boyd Posted March 3, 2015 Share Posted March 3, 2015 To test Mixed Orientations, I created two simple models in the latest PVsyst V6.34 which should have the same output, but they don't and I don't understand why. The arrays and the modeled output are as follows: 8 unlimited sheds at 0° tilt and 90° azimuth = 296 MWh/yrseveral orientations at 0° tilt/-90° azimuth and 0° tilt/90°azimuth = 113 MWh For the second I'm configuring the system for 1 sub-array, Mixed #1 and #2, equal strings in each orientation, and I'm using the same module, inverter, modules in series, and number of strings as the first simulation. But why is there such a big difference? The big losses in the second simulation that are not significant in the first are -18% Ohmic wiring loss, -16% Inverter Loss over nominal inv. power, and -47% Inverter Loss due to voltage threshold.Thank you. Link to comment Share on other sites More sharing options...
André Mermoud Posted March 10, 2015 Share Posted March 10, 2015 We discovered indeed simulation errors in the V 6.33 and 6.34 when using Mixed orientations. These will be corrected in the next version 6.35. Link to comment Share on other sites More sharing options...
matthew.boyd Posted March 10, 2015 Author Share Posted March 10, 2015 Thank you. Link to comment Share on other sites More sharing options...
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