Solar Controllers--Don't be a Sucker! :(
Just got to say it again, how it is we are sitting here for five months off grid on solar with no problems at all (third season on solar like this), using the non-programmable, non-MPPT, solar control...
Forum Discussion
Here's some data on a solar panel I assembled over 10 years ago. There are 3 plots of solar short circuit current:
1. Panel perpendicular to sun
2. Panel flat on ground
3. Calculated sine of solar elevation
The x-axis is time in hours. x = 0 is when measurements are started, not associated with real time. y-axis is normalized current.
The flat plot never reaches y = 1 because the sun does not rise perpendicular to panel at that time of year (Oct. 18).
The last 3 measurements of the perpendicular plot shows how atmospheric dispersion kills solar power. Starting 1.5 hrs before sunset, solar drastically falls off.
Sal
1. Panel perpendicular to sun
2. Panel flat on ground
3. Calculated sine of solar elevation
The x-axis is time in hours. x = 0 is when measurements are started, not associated with real time. y-axis is normalized current.
The flat plot never reaches y = 1 because the sun does not rise perpendicular to panel at that time of year (Oct. 18).
The last 3 measurements of the perpendicular plot shows how atmospheric dispersion kills solar power. Starting 1.5 hrs before sunset, solar drastically falls off.
Sal
