Kabuki, Ok. Do you already have a solar radiation detector? If you know the solar radiation, and your fixed geo-location, the position of the sun can be calculated and the math I mentioned can be used to calculate the efficiency of your panel across the range of the sun's motion. Seems like you should be looking for Astronomy-oriented projects which can track the sun's position from your geo-location. Then the rest of the math is just the angle of incidence calculations that I mentioned. Sorry I don't know of any projects that tie this together.
Here's an interesting lead: https://www.researchgate.net/post/How_can_we_compute_solar_position_at_a_given_place_on_a_given_day_and_time Regards, \Leon -- Leon Shaner :: Dearborn, Michigan (iPad Pro) Regards, Leon -- Leon Shaner :: Dearborn, Michigan (iPad Pro) > On Apr 21, 2019, at 10:00 AM, kobuki <nls...@gmail.com> wrote: > > Thanks for the quick heads up. To make it clear, I'm not looking for the math > theory behind it, I'm trying to find an existing Python library or source > code that I can integrate or use for writing the service. I want to track the > energy production, we have a fixed setup. I'm not interested in sun tracking > calculation now. > >> On Sunday, April 21, 2019 at 3:56:52 PM UTC+2, Leon Shaner wrote: >> You can google for "solar panel angle of incidence" and you'll find some >> good articles which explain the math. >> Suffice it to say, it works out that tracking the sun yields about 30% more >> power than the same panel in a fixed position, assuming consistent sun >> throughout the day. >> HTH >> >> Regards, >> Leon >> -- >> Leon Shaner :: Dearborn, Michigan (iPhone) >> >>> On Apr 21, 2019, at 9:47 AM, kobuki <nls...@gmail.com> wrote: >>> >>> Sorry if it might seem a bit off topic, but since I want to integrate this >>> service in WeeWx, too, I thought it's the appropriate place after all. I'd >>> like to add a solar power tracker that gives me the theoretical maximum >>> output of irradiation on a surface in W/m2 that has an arbitrary tilt and >>> rotation wrt south/north (depending on the hemisphere). I'm sure this has a >>> Python solution already, I'm just not familiar enough with the subject to >>> find it. Ultimately I want to estimate the theoretical max. output of our >>> solar power system on the roof. For starters, I'd be content with >>> calculation methods that ignore the inherent losses in the system (cables, >>> inverter, panel temperature coefficients, etc). >>> >>> Does anyone have pointers to start with? >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "weewx-user" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to weewx...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-user+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
