I'm wondering if there's a good way to balance the load on TWO 120V sources that are in series (to produce a 240V source), but with potentially unbalanced 120V loads also. Think in terms of the traditional US 240 service with a grounded neutral center tap.
Hooking up the two generators (or inverters) in series, and then using a big transformer that has a 240 winding on one side and a 120-0-120 winding on the other side would work (or even a 120: (120-0-120) transformer).
But, if we're looking at 5-10 kVA sorts of loads, this is a "BIG" transformer.
I was wondering if there's some clever "balancing choke" scheme like is used on paralleling variacs.
Maybe all it is is a two winding transformer, with each winding in series with one of the 120V legs (phased appropriately).
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