Hey Mark,
Not that would be an advance! So if the grid
goes down it doesn't fry the inverter? And it
doesn't run away and overspeed and destroy the
generator/motor or the wheel? That would be very
cool. I should give Derik a call.
Is he still using induction motors as generators?
Or is this a perm. magnet model?
Best,
Jeff C.
Village Power Design
At 4:00 PM -0600 4/22/10, Mark Dickson wrote:
I just spoke with Derek at Hi Power and he
insists that his LV1500-120V unit can run with
no load present and not burn out. He recommends
tying it directly to a PVP inverter with no
diversion load-doesn't get much simpler than
that! That is a system that will produce
650watts continuous for under $7000.
Btw, the customer has the rights to the creek and is ready to go.
Thanks Dave and Jeff for the lead!
Best regards,
Mark Dickson,
NABCEP Certified Solar PV Installer
Oasis Montana Inc.
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org]
On Behalf Of Bruce Geddes
Sent: Thursday, April 22, 2010 2:36 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grid-tie hydro
SMA use the Windyboy with a rectifier/diversion box for this application.
----- Original Message -----
From: <mailto:m...@oasismontana.com>Mark Dickson
To: <mailto:re-wrenches@lists.re-wrenches.org>'RE-wrenches'
Sent: Friday, April 23, 2010 6:04 AM
Subject: [RE-wrenches] Grid-tie hydro
Hello Wrenches,
Got one for you. . .
We have a customer that has great potential for
a micro-hydro system and already has the grid on
his property. The obvious way to tie the
turbine unit in would be to go back through
batteries and a GVFX or XW. In trying to
eliminate the batteries and the inefficiencies I
want to look at using a battery-less grid-tie
inverter. I am assuming that I could use a
small inverter such as the PVP 1100 and
high-voltage Stream Engine. The problem I am
trying to work around is how to divert the
~240DC output of the turbine, if and when the
grid goes down. Would this be as simple a
placing a relay on the AC side of the inverter
and having it switch on/off a large diversion
load?
For the diversion load I was thinking I could
just series up a set of water heater elements to
get to the necessary voltage.
Has anybody accomplished this before? Jay? Are
there any other elegant solutions for this?
Has anybody successfully used a WindyBoy with hydro?
Best regards,
Mark Dickson,
NABCEP Certified Solar PV Installer
Oasis Montana Inc.
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~~~~~~~~~~~~~~~~~~~
Jeff Clearwater
Senior Design Engineer
Village Power Design
Solar Design Consultation for the Commercial Sector
http://www.villagepower.com
goso...@villagepower.com
Voice: 831-427-2799
Fax: 413-825-0703
245 Dufour St
Santa Cruz, CA 95060
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