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Re: [TCML] balancing transformers

If you're doing it with dual generators you also have to take frequency
into account. They *will* lock up perfectly in sync, but it makes really
expensive sounds when it happens.

Bad.....bad sounds......and little parts in the top of the engine get to
find new homes.

Don't ask how I know this. I of course was never there, don't know anything
about what happened to that generator, and you can't prove it anyways. I
was in bible study all night.

I'm curious to see answers on the other side of this though, it's a problem
I've never come across.

On Tue, Dec 1, 2015 at 1:20 PM, Jim Lux <jimlux@xxxxxxxxxxxxx> wrote:

> 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).
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Chris Boden
The Geek Group National Science Center
We Build Awesome


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