[RE-wrenches] grid-tie inverters & generators

[Darryl Thayer]

hI ALL
I have not done what you are talking about, but in different setting the inverter charger would "punch holes" in the sine wave as the generator ran and the inverter/charger or even a big battery charger ran.  By reducing the charging rate the size of the holes in the sine wave would diminish and the assocated problems would reduce.  The problems are due to a non sign wave caused by a non-linear charger characteristics, distorting the gen output. 

Also I would be concerned with any transfer switch that does not watch for 1741.  

I wish Chris from Outback would comment, as I have heard of new improvements that allow better gen and grid tie operation.   
Darryl


--- On Thu, 11/20/08, Kurt Albershardt <info at es-ee.com> wrote:

> From: Kurt Albershardt <info at es-ee.com>
> Subject: Re: [RE-wrenches] grid-tie inverters & generators
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Date: Thursday, November 20, 2008, 9:10 PM
> > I'm hearing that it "should" be OK, but
> to CYA install a relay.
> 
> Yes, but...
> 
> The real answer is to find a genset and inverter which can
> peacefully coexist.  I don't know what sort of regulator
> topology is used by the gensets we have heard about, but
> that seems to be the key.  Many commercial/industrial
> gensets here in the US are built around the Marathon SE350
> (or something very similar) - a tried and proven analog
> design - but one which was never designed to co-exist with
> parallel generation sources.  Might someone like DSE have a
> solution that would address this?
> 
> 
> 
> > generator and transfer switch 200 feet away from the
> inverter. Installing a relay on this one would mean 200 feet
> of conduit through driveway and landscaping. Or, maybe a
> wireless connection
> 
> Why not some kind of PLC-based control with a
> well-constructed failsafe scheme?
> 
> 
> 
> 
> 
> .
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