While charging my EV (Electric Vehicle), Tesla model 3 long range, and watching all the other chargers not being used for the two hours I was there, I wondered if I could use two of them to charge faster. The chargers are greenlots ~200AC @ 30A. I know there are a lot of details that need to be consider ... like my car max. AC charging is limited to 48A (I think), wire gauge for the combined current, etc. I'm wondering about the technical stuff of combining two 60Hz (USA) AC signals only though. Thanks
Guess it would require one charger to be a master (comunicating with the car) and one or more slave chargers which need to be perfectly syncronized with the master. Thus the slaves need to messure the masters voltage and phase at the plug und control their own output to a very tight match, as already minimal differences in voltage and or phase will cause compensating currents between the chargers.
So from an engineering point, technical feasable? I think it is possible.
From a economical point (think such a solution adds quite some costs), customers which need to fiddle around with more adapters and cables, and reliability and
security safety in 24/7 operation --> I guess No is the right answer.
But it might be of interest for a operator or manufacturer of chargers to have modular power stages and combine several of them internaly to match different power classes.