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Hi gang. If any questions about this, please contact me OFF
LIST.<br><br>
There has not been anyone from SMA-America on this list since John
Berdner left. <br><br>
I welcome hearing from any more manus for participation, each is allowed
one person that is technically proficient in their products.<br><br>
FYI, here are the manu representatives on the list that I am aware
of:<br><br>
Apollo Solar - Herb Flynn<br>
Enphase - Marv Dargatz<br>
Trojan - Ronald Paredes<br>
OutBack - Christopher Freitas<br>
Direct Power - Dan Duffield<br>
Morningstar - William Mellema<br>
Xantrex - Mark Edmunds<br>
Sharp - John Hardwick<br>
Blue Sky - Rick Cullen<br>
Northwest Energy Storage - Rob Shappell<br>
Surrette - James Surrette<br>
Wiley Electronics - Brian Wiley<br>
Midnite Solar - boB Gudgel <br>
Unirac - Chris Meier<br>
Magnum Energy - Brian Faley<br>
PV Powered - Brian Thomas<br><br>
Mark Frye wrote at 09:58 AM 10/20/2009:<br>
<br>
<blockquote type=cite class=cite cite=""><font size=2 color="#0000FF">Is
there an SMA rep on this forum that can give us more detail on the
SunnyIsland/SunnyBoy AC coupled control loop?<br>
</font> <br>
<font size=2 color="#0000FF">I thought that the frequency is altered by
the SunnyIsland to trip a fault in the SunnyBoy, but the SunnyBoy is
reporgrammed to override the 5 minute reset so that you had basic on/off
control. If so, is this dymanic enought to provide PWM of the
output of the SunnyBoy? Is the mechanism something other than above?<br>
</font> <br>
<font size=2>Mark Frye</font> <br>
<font size=2>Berkeley Solar Electric Systems</font> <br>
<font size=2>303 Redbud Way</font> <br>
<font size=2>Nevada City, CA 95959</font> <br>
<font size=2>(530) 401-8024</font> <br>
<font size=2 color="#0000FF"><u><a href="http://www.berkeleysolar.com/">
www.berkeleysolar.com</a></u></font><font size=2> </font><br>
<br><br>
<hr>
<font face="Tahoma" size=2><b>From:</b>
re-wrenches-bounces@lists.re-wrenches.org
[<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" eudora="autourl">
mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of
</b>Jeff Yago<br>
<b>Sent:</b> Tuesday, October 20, 2009 9:52 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] AC Coupled Re-visited<br>
</font><br>
it is my understanding that the Sunny Island coupled with Sunny Boys is
able to taper charge in an AC coupled system as the 2 inverters are able
to communicate with each other and the Sunny Island alters the frequency
input of the Sunny Boys and lowers the total output of the Sunny Boys to
match the needs of the battery bank<br>
<br>
Kirpal Khalsa<br>
-------------------------------------------------------------------------------------------------------------------------------------------------<br>
Yes, if we use a Sunny Island AC coupled with a SunnyBoy we would not
have the battery charging problem, but remember, the SunnyBoy is 240 VAC
and the Sunny Island is 120VAC which I also find is just has expensive to
match up by having to install an external step-down transformer so I
still feel inverter manufacturers are missing an opportunity to provide a
needed product feature that nobody is providing. .<br>
<br>
Jeff Yago<br>
DTI Solar<br><br>
<br>
<hr>
Netscape. Just the Net You Need.<br>
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