[RE-wrenches] Generator brains

[Jarmo.Venalainen at schneider-electric.com]

Hi:

Having both connected will work the way you want, only if you make sure 
the solar charger charging voltage is higher than the Kohler charger 
voltage.

When the solar charging source has higher voltage it will trump the lower 
Kohler charging voltage an do the charging when the sun is out.  When the 
sun is not out, the Kohler will do the job. 

However, if the solar charging source is never higher, the solar charger 
will not be able to create any charging current as it will always see an 
already high battery terminal voltage as maintained by the Kohler.

If there is no charging voltage adjustment on the Solar or Kohler charger, 
you could put one, (or more as  required) diodes, in series on the Kohler 
charging wire to drop its voltage enough to make sure the solar charger 
voltage is slightly higher.

The diodes could be anything as long as they can handle the full charge 
current from the Kohler.

JARMO
_____________________________________________________________________________________ 


Jarmo Venalainen  |   Schneider Electric   |  Xantrex Brand  |   CANADA  | 
  Sales Application Engineer 
Phone: +604-422-2528  |   Tech Support: 800-670-0707  |   Mobile: 
+604-505-0291 
Email: jarmo.venalainen at schneider-electric.com  |   Site: www.Xantrex.com 
|   Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 








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From:
"frenergy" <frenergy at psln.com>
To:
"RE-wrenches" <re-wrenches at lists.re-wrenches.org>, 
Date:
07/16/2015 08:23 AM
Subject:
[RE-wrenches] Generator brains
Sent by:
"RE-wrenches" <re-wrenches-bounces at lists.re-wrenches.org>



Wrenches,

        We recently discussed the significant load the brains of  many 
gensets requires, especially in off-grid.  I have been trying to keep the 
start battery and brains of a Kohler 14KW gen charged with a ~40 PV.  This 

works fine until the winter.

        Any issues with keeping that PV connected (with its charge 
controller) and re-connecting the supplied-by-Kohler power source 
connection 
to keep the battery and brains happy?  I would like to think the PV would 
take some of the load off the AC connection to the main off-grid system, 
with no conflicts.

TIA

Bill
Feather River Solar Electric 


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