[RE-wrenches] Cummins DC generator

[Mark Frye]

How would you integrate a dc generator like to Polar Power into a "standard"
inverter/charge-battery-pv charge controller system?
 
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
 <http://www.berkeleysolar.com/> www.berkeleysolar.com  
 

  _____  

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of R Ray
Walters
Sent: Monday, October 24, 2011 7:55 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Cummins DC generator


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. 
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.


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?
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.

Here's another that looks interesting, and actually can be adjusted up to 64
vdc: http://polarpowerinc.com/products/generators/index.htm
Once again, I'm just sharing the info, not advocating these.

R. Walters
ray at solarray.com
Solar Engineer
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20111029/439c544f/attachment-0003.html>