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hydro</title></head><body>
<div>Hey Mark,</div>
<div><br></div>
<div>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.</div>
<div><br></div>
<div>Is he still using induction motors as generators? Or is
this a perm. magnet model?</div>
<div><br></div>
<div>Best,</div>
<div><br></div>
<div>Jeff C.</div>
<div>Village Power Design</div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<div>At 4:00 PM -0600 4/22/10, Mark Dickson wrote:</div>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">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.</font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">Btw, the customer has the rights to the creek and is
ready to go.</font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080">Thanks Dave and Jeff for the lead!</font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080">Best regards,</font></blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080"> </font></blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080">Mark Dickson,</font></blockquote>
<blockquote type="cite" cite><font size="-1" color="#000080">NABCEP
Certified Solar PV Installer </font></blockquote>
<blockquote type="cite" cite><font face="Comic Sans MS" size="-1"
color="#000080">Oasis Montana Inc.</font></blockquote>
<blockquote type="cite" cite><font face="Times New Roman"
color="#000080"> </font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote type="cite" cite>
<hr size="2"></blockquote>
<blockquote type="cite" cite><font face="Tahoma"
size="-1"><b>From:</b> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org]<b> On Behalf Of</b>
Bruce Geddes<br>
<b>Sent:</b> Thursday, April 22, 2010 2:36 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Grid-tie hydro</font></blockquote>
<blockquote type="cite" cite><font face="Calibri"
size="-1"> </font></blockquote>
<blockquote type="cite" cite><font face="Arial" size="-1">SMA use the
Windyboy with a rectifier/diversion box for this
application.</font><br>
<blockquote><font face="Arial" size="-1">----- Original Message
-----</font></blockquote>
<blockquote><font face="Arial" size="-1"><b>From:</b></font> <a
href="mailto:Mark@OasisMontana.com"><font face="Arial" size="-1">Mark
Dickson</font></a></blockquote>
<blockquote><font face="Arial" size="-1"><b>To:</b></font> <a
href="mailto:re-wrenches@lists.re-wrenches.org"><font face="Arial"
size="-1">'RE-wrenches'</font></a></blockquote>
<blockquote><font face="Arial" size="-1"><b>Sent:</b> Friday, April
23, 2010 6:04 AM</font></blockquote>
<blockquote><font face="Arial" size="-1"><b>Subject:</b> [RE-wrenches]
Grid-tie hydro</font></blockquote>
<blockquote><font face="Times New Roman"> </font></blockquote>
<blockquote><font face="Arial" size="-1" color="#000080">Hello
Wrenches,</font></blockquote>
<blockquote><font face="Arial" size="-1" color="#000080">Got one for
you. . .</font></blockquote>
<blockquote><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></blockquote>
<blockquote><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></blockquote>
<blockquote><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote><font face="Arial" size="-1" color="#000080">Has anybody
accomplished this before? Jay? Are there any other elegant
solutions for this?</font></blockquote>
<blockquote><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote><font face="Arial" size="-1" color="#000080">Has anybody
successfully used a WindyBoy with hydro?</font></blockquote>
<blockquote><font face="Arial" size="-1"
color="#000080"> </font></blockquote>
<blockquote><font face="Comic Sans MS" size="-1" color="#000080">Best
regards,</font></blockquote>
<blockquote><font face="Comic Sans MS" size="-1"
color="#000080"> </font></blockquote>
<blockquote><font face="Comic Sans MS" size="-1" color="#000080">Mark
Dickson,</font></blockquote>
<blockquote><font size="-1" color="#000080">NABCEP Certified Solar PV
Installer </font></blockquote>
<blockquote><font face="Comic Sans MS" size="-1" color="#000080">Oasis
Montana Inc.</font></blockquote>
<blockquote><font face="Calibri" size="-1"> </font><br>
</blockquote>
</blockquote>
<blockquote type="cite" cite><br>
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<x-sigsep><pre>--
</pre></x-sigsep>
<div>~~~~~~~~~~~~~~~~~~~<br>
Jeff Clearwater</div>
<div>Senior Design Engineer</div>
<div>Village Power Design<br>
Solar Design Consultation for the Commercial Sector<br>
http://www.villagepower.com<br>
gosolar@villagepower.com<br>
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