"Maximum Field/Shadings Area ratio" ignored

[johank]

Hi,

I have purposely set a high field/shadings area ratio but still get an error that

"The area of the 3D fields is lower than the area of the modules defined in the subarrays."

See screenshots - I think the ratio here is ~28, below the project's / default limit.

Thanks!

[johank]

... as a follow-up: after copy/paste, the warning changed to "area ... is slightly lower" (i.e. no longer blocks running the sim) with a ratio of ~7.

Running PVsyst 7.2.11 (24303).

[Stéphane Metz]

Hi johank,

A large discrepancy between your system definition and your 3D scene undoubtedly means there is a sizing error.

Please check your system definition and your 3D scene. The smaller the gap between the two, the more consistent your definition is.

[dtarin]

You can modify in advanced parameters. There might be conflict in PVsyst between the setting shown in project settings and the setting in advanced parameters, they are referenced in opposite ways (shading/field vs field/shade). I have always modified in advanced settings with no issues.

[johank]

Thanks dtarin! I have it set up as in the attached, the "80.0" for this project was a test to see if changing the parameter by-project made any difference (it did not).

Stephane, thanks for the reply - how is the ratio calculated?

I'm OK with a high ratio here, as it just needs to be a representative tracker block (for a large tracking array). There are no significant external shadings.

[Stéphane Metz]

Stephane, thanks for the reply - how is the ratio calculated?

Area ratio = Shading area / System area

[johank]

Gotcha, thanks Stéphane.

In that case it seems like the custom "Maximum Field/Shadings Area Ratio" (80.0) from my example above isn't being used:

field / shading area = 174683 / 6189 ~= 28.2

 

[johank]

... right, clearly did not read that closely enough: it's the minimum ratio that was causing the error.

As dtarin said above, the definition is different depending on which settings you're in:

• Advanced parameters: "shading scene active area" / "system definition active area".
• Project settings: "system active area" / "shading scene active area" (I think)

Setting lower minimum ratios in advanced settings made the error go away. Yay!

[Stéphane Metz]

Pay attention, the values you show by screenshot are far from the default values:

The "Maximum Field/Shadings area ratio" parameter in the project parameters corresponds well to the "Shadings: absolute maximum shading/field area ratio" from the advanced settings. The label is wrong, you have to read "Shadings/Field" instead of "Field/Shadings". I will correct the text in the software.