DIY 1kW MPPT Solar Charge Controller
instructables.com
instructables.com
Great work!
I'm kinda sad nobody has replied in hours :( . My dad was an ELE and this is beyond the quality of most professional work as far as research and implementation.
As a dev that knows electronics fairly well, your project is great OP
They have a maximum Voltage when open circuit, and a maximum Current when shorted.
And the maximum power point is somewhere between those two extremes.
Exactly where depends on various conditions, like the strength of the sunlight (clouding, etc).
With an open circuit (infinite resistance load), the voltage is a finite number but current is zero, so power is 0.
With a short circuit (zero resistance load), voltage is 0 and current is some finite number, so again power is 0.
With loads in between short circuit and open circuit (i.e. some finite nonzero resistance), both voltage and current are nonzero, so nonzero power is produced.
One or more of those load points will result in a maximum in the power production curve. With real PV cells and real light, one point is the maximum at any given time.
(In electronics if you find complex numbers they're usually being used as shorthand for complex exponentials via a Laplace transform — in this case, an imaginary or complex solution would mean that the PV panel has some kind of weird resonant behavior — again, unlikely to be the case for any panel you actually have.)