Thanks for the reply. Given that the solar panels are more likely to under produce than over produce power I'm not sure how a MPPT controller will help here. I've quoted someone from another forum on why this may be the case. MPPT controllers control how they use the input current where is a buck boost converter will not. My concern is with the output current remaining the same.
I think my main concern is having the optimum output voltage regardless of the input voltage.. I could be missing a point about MPPT controllers here. Maybe you can correct my understanding here.
Quote below.
" The MPPT controller uses an algorithm to determine and use the optimum power of the panel. It dynamically adjusts the switching regulator's use of current to keep the power transfer at a maximum as all these things change. A BB regulator simply provides a constant output voltage without regard for controlling its use of input power."