User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:38.0) Gecko/20100101 Thunderbird/38.3.0
It's sort of tesla related, because we fool with paralleling variacs and
the like..
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).