How does "Irradiance optimization" option works in Pvsyst 6.7.9

[PAVANAELPULA]

Hi PVsyst,

We found new option of "Irradiance optimization" in PVsyst 6.7.9 version. However, we didn't found any reference or guidance on how it work ?? and it background methodology ??.

when are not sure when to use this option ??.

Request to provide some details on newly available option "Irradiance optimization" in Project design>Orientation Tab.

Regards,

Pavan

[dtarin]

I am also interested in knowing more about this and where it originated from, how it works, etc. Edited April 2, 2019 by dtarin

[MNWild]

+1 For an explanation.

Or a warning not to check the new box that gives more energy for free. At least a single sentence, slightly vague, release note to tease us but leave us with more questions, only joking.

Best wishes to all

p.s. Request to also include a nice short video with each software release note to illustrate, visually, confirming what's been changed/why and how to use..and more importantly what old forum/help file information is entirely obsolete.

[TerraWatt]

Would be nice if an explanation is released with the release notes...

[André Mermoud]

The usual tracking strategy defines the tracker's angle in order to minimize the incidence angle for a given sun's position.

This new strategy determines the orientation according to the best irradiance received by the trackers. This may be different than the previous strategy as the transpositon of the diffuse component is proportional to (1 + cos(i) / 2), where i = incidence angle. Therefore the higher tilt, the less transposed irradiance.

For a fully covered weather, the optimal tracker's position will be horizontal (Phi = 0)

In practice on real systems, this strategy may be easily applied by putting 2 irradiance sensors on the tracker, separated by a black wall perpendicular to the tracker: the best orientation is obtained when the measured irradiances are equal.

[david.zar]

Hi, Is it possible to use "Backtracking" and "Irradiance Optimization" in the same simulation?