Simulation with backtracking

[samastor]

Good morning

I am trying to perform some simulations with backtracking. Everything is fine while the azimuth of the tracker system is aligned with N/S axis. But the real system i want to simulate has a N/S deviation of 21° to West and the system does not give me the option to simulate such scenario. In means of PLC logic i have implemented the backtracking also under conditions of deviations on the North-South axis, just needed a bit more of trigonometry formulas but it works (based on observations early morning and late evening for the last 6 months in a location in Northern Spain). Is there any way i can simulate the system with PV Syst?

Thanks in advance, Stavros

[André Mermoud]

The backtracking with axis not facing south is allowed and works if you turn the whole trackers set toward not-south azimuth (i.e. when the alignment basis of each tracker is perpendicular to the axis, misalign parameter=0).

For axis with azimuths not perpendicular to the trackers aligment (i.e. not-null "misalign" parameter), the problem is much more complex, and I was not able to find an analytical algorithm for tilted axis.

Now for horizontal axis in this situation, the algorithm should be the same as in the Misalign=0 case, but I have indeed not developed this special case.

[samastor]

Thank you André

it seems that works if you apply the deviation in the object positioning. If i find any problem with the results, versus the recorded data i will come back to you. Have a nice weekend,

[traj123]

Hey Andre,

Is the E-W mis-align with bactracking plan to be introduced in PVsyst in upcoming versions? Is there a timeline on it?

Thanks!

Taran