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<DIV dir=ltr align=left><FONT color=#0000ff size=2 face=Arial><SPAN
class=812274900-30102011>How would you integrate a dc generator like to Polar
Power into a "standard" inverter/charge-battery-pv charge controller
system?</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT color=#0000ff size=2 face=Arial><SPAN
class=812274900-30102011></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><SPAN lang=en-us><FONT size=2 face=Arial>Mark
Frye</FONT></SPAN> <BR><SPAN lang=en-us><FONT size=2 face=Arial>Berkeley Solar
Electric Systems</FONT></SPAN> <BR><SPAN lang=en-us><FONT size=2 face=Arial>303
Redbud Way</FONT></SPAN> <BR><SPAN lang=en-us><FONT size=2 face=Arial>Nevada
City, CA 95959</FONT></SPAN> <BR><SPAN lang=en-us><FONT size=2
face=Arial>(530) 401-8024</FONT></SPAN> <BR><SPAN lang=en-us></SPAN><A
href="http://www.berkeleysolar.com/"><SPAN lang=en-us><U><FONT color=#0000ff
size=2 face=Arial>www.berkeleysolar.com</FONT></U></SPAN></A><SPAN
lang=en-us><FONT size=2 face=Arial> </FONT></SPAN> </DIV>
<DIV> </DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
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<FONT size=2 face=Tahoma><B>From:</B> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of </B>R Ray
Walters<BR><B>Sent:</B> Monday, October 24, 2011 7:55 PM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> Re: [RE-wrenches] Cummins DC
generator<BR></FONT><BR></DIV>
<DIV></DIV>They show them as being used specifically for off grid solar
applications including remote homes, but I'm with you, I don't understand the
voltage limitation.
<DIV>They seem to think they are just replacing the battery while running, not
actually charging it. Very weird. I even went through their case studies, and
I'm wondering if they might end up with some long term sulfation problems. It
seems they're only interested in reducing the battery size, not augmenting the
PV charging; seems a waste of fuel.<BR>
<DIV><BR></DIV>
<DIV>I linked to these for Allan earlier just as "food for thought" I wasn't
actually advocating their use. It does look like a decent generator, so possibly
the voltage limitation could be overcome?</DIV>
<DIV>I remember another DC gen set, that ran a Honda motor to belt belt drive a
truck alternator (late 90s). I recall them being something of a pain.</DIV>
<DIV><BR></DIV>
<DIV>Here's another that looks interesting, and actually can be adjusted up to
64 vdc: <A
href="http://polarpowerinc.com/products/generators/index.htm">http://polarpowerinc.com/products/generators/index.htm</A></DIV>
<DIV>Once again, I'm just sharing the info, not advocating these.</DIV>
<DIV><BR>
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<DIV>R. Walters</DIV>
<DIV><A href="mailto:ray@solarray.com">ray@solarray.com</A></DIV>
<DIV>Solar Engineer</DIV></SPAN></DIV></DIV></DIV></BODY></HTML>