Does anyone have a document or wiki that describes how to take an
off-the-shelf AC standby generator and use it at a solar/DC site?
I'm assuming starting would be via remotely-operated or
conditional-logic-operated relay based on battery voltage? Anyone
done it and care to share the nitty gritty?
Jesse DuPont
Network
Architect
email: jesse.dup...@celeritycorp.net
Celerity Networks LLC
Celerity
Broadband LLC
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And on a standby generator, if it is a true DC generator
the brushes will last forever. But it is probably an
alternator/rectifier.
AC generator with redundant rectifiers is bound to be the
best value.
Sent: Friday, February 3, 2017 8:56 AM
Subject: Re: [AFMUG] I Want
However you get there, the nice thing about DC is you
don't have to stay at 3600 RPM. It's a big part of why
inverter generators last so long on small loads.
------ Original Message ------
Sent: 2/3/2017 10:29:29 AM
Subject: Re: [AFMUG] I Want
From an engineering standpoint I would expect a DC
generator to be higher maintenance than an AC
generator. True DC generators have brushes that wear
while AC generators have very little other than
bearings to wear out. Alternators (like your car
has) are actually AC generators with a rectifier pack
to turn the AC back into DC. When your alternator
bites the dust about half the time it’s the rectifier
that fails, the other half of the time it’s the
bearings, with a small percentage of winding or other
failures (yeah - I know that’s more than 100%).
Our high reliability sites have standby AC
generators with 500 gal propane tanks, a rectifier
shelf, and ~24 hours of batteries. So far they have
been very reliable.
Well, it certainly would protect you in
the event of rectifier failure.
Sent: Thursday, February
02, 2017 3:44 PM
Subject: Re: [AFMUG] I
Want
if youre doing a standby
generator at a dc site, even an AC fed
DC site, wouldnt it be more efficient to
use a dc generator, with less
maintenance?
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