Almot - from my POV not a logical result of a higher voltage array.
The higher input voltage limit allows series strings of higher voltage panels thus less current and exponentially less line losses (P = the square of the current times the wire resistance). That said power is power parallel panels could easily produce the same power at a lower voltage but would REQUIRE huge cables to offset the line losses. Power out would be equal either way since the buck conversion is 95% or greater efficient in most cases. If the installation has a long distance between the array and the controller and you are talking over say 200 watts of array power IMHO the MPPT controller is the way to go – Greatly reduced line loss is only one of their unique advantages.
