[RE-wrenches] Cummins DC generator

[Drake]

Run the DC straight to a breaker in the power center.  Use a voltage 
sensitive relay to stop the generator when the battery voltage gets high.

At 08:53 PM 10/29/2011, you wrote:
>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>http://polarpowerinc.com/products/generators/index.htm
>Once again, I'm just sharing the info, not advocating these.
>
>R. Walters
><mailto:ray at solarray.com>ray at solarray.com
>Solar Engineer
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Drake Chamberlin
ATHENS ELECTRIC LLC
OH License 44810
CO license 3773
NABCEP Certified PV
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