[RE-wrenches] 24V charging with 60 cell modules

[Eric.Bentsen at schneider-electric.com]

Hi Mac,

A PWM charge controller, such as the C35, will work in this application, 
because it will 
act like a switch that connects the panel to the battery. While the bulk 
voltage will likely be slightly
higher than Vmp, once the controller transitions to float, which is approx 
27V for most battery types,
it should allow the module to operate very close to Vmp. 
Typically, MPPT controllers require a higher Vmp than the target charge 
voltage.

Eric Bentsen
_____________________________________________________________________________________ 


Eric Bentsen  |   Schneider Electric   |  Solar Business  |   UNITED 
STATES  |   Technical Support Representative 
Phone: +(650) 351-8237 ext. 001#  |   
Email: eric.bentsen at schneider-electric.com  |   Site: 
www.schneider-electric.com/solar  |   Address: 250 South Vasco Rd., 
Livermore, CA 94551 


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From:
Mac Lewis <maclewis1 at gmail.com>
To:
RE-wrenches <re-wrenches at lists.re-wrenches.org>
Date:
06/04/2013 08:05 AM
Subject:
[RE-wrenches] 24V charging with 60 cell modules
Sent by:
re-wrenches-bounces at lists.re-wrenches.org



Hello wrenches,

Is there a good method to charge 24V battery bank with single 60 cell 
modules?  Ideally, I'd like to charge a 24 V bank with a Kyocera 
245GX-LFB.  However, at NOTC the Vmp is 26.8V.  Any good way to do this?

Thanks in advance.
-- 



Mac Lewis

"Yo solo sé que no sé nada." -Sócrates

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