@israndy Hoping there is still activity in this thread as I have a use-case that I think applies to the work you have done.
I have six Gen 3 TWC's with one master and 5 slaves using the wifi communication load sharing between them, set to a fixed amount not to exceed 70 amps. The load sharing ensures that if 6 cars were all charging at the same time, the TWC's won't pull full power, overloading my electrical panel. Simple.
But I have a solar array connected to this panel that can make about 23-24kW during peak inverter output and I would like to dump this power into the cars by communicating to the master TWC to increase fixed 70 amps up to xx amps based on how much solar is available.
If there is no solar available, the master then defaults back down to the 70 amp setting, as more solar becomes available, the master ramps up the max load sharing current setting accordingly.
The end goal would allow faster charging rates if multiple cars are charging at once on a sunny day, whereas currently the system is restricted by the utility side electrical capacity.
The inverter is a CPS 25K inverter (3 hot 120V legs). I have an Emporia energy monitor as well that measures inverter output and grid power.
I have no coding experience but a mechanical engineering background and can learn.