Question about pvfactor timeseries

[nunzia di carlo]

Hi everyone,
I'm completely new to using pvlib, hope you can help me,
my problem is about pvfactor timeseries. 

My aim is to obtain the effective irradiance of a bifacial module facing south and with variable tilt set by me, I would like to know if i get consistent irradiance data by inserting an axis_azimuth =90, azimuth=180 and a clockwise variable tilt.

Thank you very much in advance,

Nunzia

[kevina...@gmail.com]

Hello Nunzia,

Yes, that is the right way to use pvfactors for fixed-tilt simulations.  Here is some example code taking that same approach: https://pvlib-python.readthedocs.io/en/stable/gallery/bifacial/plot_pvfactors_fixed_tilt.html

Kevin

[salazar...@gmail.com]

Hi, I hope you all are doing well.

One question, should the input parameters DNI and DHI of the pvfactors_timeseries function be measured in the horizontal plane or can they be in the plane-of-array (e.g., poa_direct and poa_diffuse obtained with a transposition model)?

Thanks in advance!

Nelson A. Salazar Peña

[kevina...@gmail.com]

Hello Nelson,

Those inputs are not plane-of-array; the necessary POA irradiance components are calculated internal to the pvfactors model.  Use standard DNI and DHI as inputs.

Kevin

[salazar...@gmail.com]

Hi Kevin.

Ok, perfect! Thanks for taking the time and helping me clarify the doubt.

Nelson A. Salazar Peña