Irradiance Optimization Feature

[avelasco]

Does the PVsyst irradiance optimization feature stow trackers to a flat (phi=0) position during all times of high diffuse conditions? What is the diffuse ratio that triggers a flat position?

Are there times when the tracking angle would be non-zero? For example, fully covered weather makes sense to go flat, but what if its only partially cloudy.

[André Mermoud]

The tracking angle optimization doesn't work with diffuse thresholds.

At each time step, the simulation evaluates the optimal tracking angle on the basis of the transposition model: the angle is adjusted in order to get the best transposition result GlobInc, considering the Beam and Diffuse components.

[beredisqq]

Regarding times when the tracking angle would be non-zero, the optimization feature adjusts the orientation according to the best irradiance received by the trackers. So, in conditions that are only partially cloudy, where direct irradiance still plays a significant role, the trackers would not necessarily be in a flat position. Instead, they would adjust to optimize the combination of direct and diffuse irradiance received

[André Mermoud]

Yes of course, this is what I explained above.