How to calculate the best tilt angle for every season or month in pvsyst

[squeezer]

So I'm trying to find the best tilt for a seasonal adjust system.
I already known the way to find best tilt angle on summer or winter,in " Grid Conected-Variant-Orentation-fixed tilted plane".
But I cannot find how to get the best tilt on every month or season,like the best tilt on October or spring.
Is PVsyst able do this?

A lot thanks.

[squeezer]

this page can calculate the irradiance in different tilt angle on summer or winter,how can I calculate the irradiance in different tilt angle on a specific month?

[Michele Oliosi]

You can try using the "Advanced simulation" button, leading to the batch mode to modify the tilt in your simulations, and the simulation dates selection to restrict to a specific month. This is more precise as it takes all your simulation parameters into account, e.g. shadings.

There is also a tool found from the main window > Tools > Transposition factor. In this case there is no accounting for other parameters that could impact the optimum angle.

[squeezer]

14 hours ago, Michele Oliosi said:

You can try using the "Advanced simulation" button, leading to the batch mode to modify the tilt in your simulations, and the simulation dates selection to restrict to a specific month. This is more precise as it takes all your simulation parameters into account, e.g. shadings.

There is also a tool found from the main window > Tools > Transposition factor. In this case there is no accounting for other parameters that could impact the optimum angle.

Transposition factor tool can help.

And this video showed the way to set batchsimulate paraments csv file.
Even so, I failed to find a way to restrict the simulated duration to a specific month.
Though I change the simulation dates,the BatchResults still performed an annual result.

Can u tell me how to set simulate duration rightly?

Best regards!

[Michele Oliosi]

Hmm I see, sorry I hadn't tried before answering. It seems we need to fix the interaction between batch mode and the date selection.

[squeezer]

This will be very helpfu?

[Thum]

Hi Michele Oliosi, 

Regarding the above question to calculate the best tilt angle for every month, is there any update on fixing the interaction between batch mode and the date of selection as you posted on January 6, 2023?

In the PVsyst version 7.4.7 (rev. 37278), there is no option to restrict simulated duration to a specific month as an input parameters for multiple simulation runs in batch. Please refer to attached photo.

Is there any plan to allow an option for specifying "months" as an input parameter in the future? 

Thank you.
Best regards

[Michele Oliosi]

Indeed, this hasn't been fixed yet. It is currently planned for version 8.1.
There is one workaround I can think of: if the weather data has been imported from a file, you can also import it separately month by month as different files (by splitting the original file by months). This will give you MET files that contain only one month. Simulating with them will limit the simulation to the date range included in these files.

[Thum]

Hi Michele Oliosi, 

Thank you very much for your suggestion on the workaround. I will try it out.