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-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@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 r...@solarray.com Solar Engineer
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