Over paneling was a concept first used for grid tied inverters because they operated at higher voltages and were designed to allow for over paneling to be more productive during the day. And this was based on simply taking power and directing it to the local main panel or out the the grid. Nothing fancy, just harvest and dump. So adding the over paneling feature was easy to do and sold more panels and gave more of the utility approved output for a longer period of time in the day. Period, end of story on over paneling.
Now, for an MPPT charge controller, over paneling or coming near the Voc limits, ie. flying close to the sun is completely un necessary and of little to no long term benefit.
The MPPT controller charging a low voltage battery bank takes advantage of the software algorithm once the input voltage gets about 22 volts over that of the batteries. It receives the input voltage and current and then modifies these to allow more current to flow into the batteries AT A LOWER VOLTAGE, NOT A HIGHER VOLTAGE. And with a lithium battery bank, the BMS of the batteries actually controls the input voltage and amps to charge and discharge that are presented to it by the MPPT output.
Rather than "overpanel", you would be better off aiming your panels optimally for PV collection at more hours in the day.
Now, for an MPPT charge controller, over paneling or coming near the Voc limits, ie. flying close to the sun is completely un necessary and of little to no long term benefit.
The MPPT controller charging a low voltage battery bank takes advantage of the software algorithm once the input voltage gets about 22 volts over that of the batteries. It receives the input voltage and current and then modifies these to allow more current to flow into the batteries AT A LOWER VOLTAGE, NOT A HIGHER VOLTAGE. And with a lithium battery bank, the BMS of the batteries actually controls the input voltage and amps to charge and discharge that are presented to it by the MPPT output.
Rather than "overpanel", you would be better off aiming your panels optimally for PV collection at more hours in the day.