Hi Mark,
Yes I've done several grid-tie hydro systems. As
Dave says Derik is your man for components.
I've also worked with SMA to tweak the settings
on the SB to be a WB ("water boy"). Actually no
tweaks are absolutely necessary. But if you
shorten the reset time it helps when the hydro
goes down and you are trying to test it to bring
it back up. Derik is aware of these tweak
refinements but it will work without any tweaks.
We have been running 2 2500 watt induction
generators into two 2500 "Water Boys" at one
site now since the spring of '06 - 24 hours/day
with no inverter failures. We throttled the
water down so that the each inverter see a
continuous 2200 watts. We don't dare to go
higher as they run pretty hot at that. 4400
watts continuous is 3168 KWHs/Month= 38,000
KWHrs/yr! Runs the whole ranch - Install cost
was around $20,000. Can send pics if you'd like.
Make sure you use redundant load dumps!
Best,
Jeff Clearwater
Village Power Design
Derik at HI Power hydro has done several of
these with grid tie DC voltage with diversion.
You can reach him at <mailto:[email protected]>[email protected]
<http://www.hipowerhydro.com/>http://www.hipowerhydro.com/
cheers,
David
David Katz
David Katz
Chief Technical Officer
AEE Solar
1155 Redway Drive
P.O. Box 339
Redway, CA 95560
Tel (707) 825-1200
Fax (707) 825-1202
<mailto:[email protected]>[email protected]
<http://www.aeesolar.com/>www.aeesolar.com
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Mark Dickson wrote:
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
NABCEP (tm) Certified Solar PV Installer
http://www.nabcep.org/
Village Power Design
Solar Design Consultation for the Commercial Sector
http://www.villagepower.com
[email protected]
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245 Dufour St
Santa Cruz, CA 95060
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