jromme

GlobHor is irradiance measured in a horizontal plane. GlobInc is the irradiance that hits the actual orientation of your array. This will likely be greater than GlobHor as there are inherent benefits to tracking or installing modules at an angle. GlobEff is GlobInc after all optical losses are applied, as mentioned below. For example, a single axis tracking system could see a GlobInc boost of 35% because it's facing the sun most of the day (ideally). After all optical losses are applied, the GlobEff boost could still equal 25% when compared to GlobHor.

I've also been having this problem. It started once I switched to version 6.67. Also, can't save over an IAM profile within a PAN file.

Is anyone else having issues saving an IAM profile in version 6.6.7 of PVsyst. I have been trying to save over an IAM profile within a .PAN file and the changes don't seem to be permanent even after pressing the save button. This has been causing me an inconvenience because every time I run a simulation I have to manually enter the IAM profile in the detailed losses section as opposed to using the saved IAM profile. Thanks.

That is a really good point and most likely the issue. Thanks for the input!

It's a 1500V central inverter.

Currently running 6.44 but also tested on 6.47 and 6.53 and got the same result.

I am encountering an issue with using a grid limitation. The output file is showing that energy injected into the grid is larger than what I have assigned as the limit in the grid limitation section. Has anyone else encountered this?

How are clipping losses calculated in PVsyst? Let's say the nominal and maximum power in your OND file is 3125kW. At a particular hour, the power available at the output of the inverter = 3115 kW and the clipping loss = 9.25 kW. The sum of these equals 3124.25 which is less than the nominal power of the inverter. Why is this specific hour being clipped by PVsyst? Thanks.