Hi Kevin,
Thanks for the Eigg video. What a great place.
I didn't see evidence of any AC coupling of inverter produced AC to a
generator produced mini grid. I understand this is being done in a
homebrew manner by some.
The current wisdom on the issue is that the less the PV contribution
to the generator supplied grid is, the easier. It would seem that if
a grid tie inverter output could be regulated, using Sunny Island
type controls, it should be possible to have a small inverter
generator create a mini grid that could be fed by PV.
A system featuring this type of technology was linked in a posting on
this list some years ago, The link seems dead now. In that case a
large generator was feeding a number of houses, and PV was fed into
the system.
The reason for this interest is that battery backup systems are much
more expensive than generators. We need to find a way to utilize PV
arrays during outages without the expense of battery backup systems.
Drake
At 07:42 PM 2/8/2013, you wrote:
Hi Drake,
SMA has very good solutions for this. Does this out of the box
without a bunch of custom control systems. I have put a few systems
in like this, but the renewables not yet online (generator / battery
now). If you google Isle of Eig you will find some info on what they
have done there.
http://islandsgoinggreen.org/about/eigg-electric/
Kevin
-----Original Message-----
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org]On Behalf Of Drake
Sent: February 8, 2013 6:41 AM
To: RE-wrenches
Subject: [RE-wrenches] Generator Controlled Mini Grid
A potential customer is interested in a mini grid, set up by a
generator, to connect his array to.
Some years back, on this list, an article was linked about a
community with a central generator that had PV input to the generator
supplied, local grid, using electronic controls.
Has any progress been made in this technology? Does anyone have a
link to the electronic control equipment or any other relevant information?
Thanks,
Drake
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