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hydro</title></head><body>
<div>Hi Mark,</div>
<div><br></div>
<div>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.</div>
<div><br></div>
<div>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.</div>
<div><br></div>
<div>Make sure you use redundant load dumps!</div>
<div><br></div>
<div>Best,</div>
<div><br></div>
<div>Jeff Clearwater</div>
<div>Village Power Design</div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<blockquote type="cite" cite>Derik at HI Power hydro has done several
of these with grid tie DC voltage with diversion.<br>
You can reach him at <a
href="mailto:derik@asis.com">derik@asis.com</a><br>
<a
href="http://www.hipowerhydro.com/">http://www.hipowerhydro.com/</a><br
>
cheers,<br>
David<br>
</blockquote>
<blockquote type="cite" cite>David Katz<br>
</blockquote>
<blockquote type="cite" cite>David Katz<br>
</blockquote>
<blockquote type="cite" cite>Chief Technical Officer<br>
</blockquote>
<blockquote type="cite" cite>AEE Solar<br>
</blockquote>
<blockquote type="cite" cite>1155 Redway Drive<br>
</blockquote>
<blockquote type="cite" cite>P.O. Box 339<br>
</blockquote>
<blockquote type="cite" cite>Redway, CA 95560<br>
</blockquote>
<blockquote type="cite" cite>Tel (707) 825-1200<br>
</blockquote>
<blockquote type="cite" cite>Fax (707) 825-1202<br>
</blockquote>
<blockquote type="cite" cite><a
href="mailto:david@aeesolar.com">dkatz@aeesolar.com</a><br>
</blockquote>
<blockquote type="cite" cite><a
href="http://www.aeesolar.com/">www.aeesolar.com</a><br>
</blockquote>
<blockquote type="cite" cite> <br>
</blockquote>
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<blockquote type="cite" cite> <br>
</blockquote>
<blockquote type="cite" cite><br>
<br>
Mark Dickson wrote:<br>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">Hello Wrenches,</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">Got one for you. . .</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">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?</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">For the diversion load I was thinking I could just
series up a set of water heater elements to get to the necessary
voltage.</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">Has anybody accomplished this before? Jay?
Are there any other elegant solutions for this?</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">Has anybody successfully used a WindyBoy with
hydro?</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font><br>
</blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080">Best regards,</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080"> </font><br>
</blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080">Mark Dickson,</font><br>
</blockquote>
<blockquote type="cite" cite><font size="-1" color="#000080">NABCEP
Certified Solar PV Installer </font><br>
</blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080">Oasis Montana Inc.</font><br>
</blockquote>
<blockquote type="cite" cite><font face="Calibri"
size="-1"> </font><br>
</blockquote>
<blockquote type="cite" cite><tt><br></tt></blockquote>
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<x-sigsep><pre>--
</pre></x-sigsep>
<div>~~~~~~~~~~~~~~~~~~~<br>
Jeff Clearwater<br>
Senior Design Engineer<br>
NABCEP (tm) Certified Solar PV Installer<br>
http://www.nabcep.org/<br>
Village Power Design<br>
Solar Design Consultation for the Commercial Sector<br>
http://www.villagepower.com<br>
gosolar@villagepower.com<br>
<br>
Voice: 831-427-2799<br>
Fax: 413-825-0703<br>
245 Dufour St<br>
Santa Cruz, CA 95060<br>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div>
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