MPPT solar battery charger

[theFob]

Thanks iw,
I suppose the first chart explains your code. I found it in the net. But i'm still out of focus.
Why is the measurement of dV? As is shown on the simulation, the voltage of the panel
is almost constant up to 90% of available current. So there is "constant voltage" and "constant current" methods. The voltage remain the same even at night, of course with almost no load. The photons flow become electrons flow, i.e. available current. So the panel is kind of current generator.
And of course, measured dV will be small and inaccurate, may be the noise is from there.
I used hardware circuit similar as algorithm in second chart. So i'm interested of your work. I will try to find my circuits, but unfortunately they are on almost dead HDD ...

Regards