[RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

[Mark.Edmunds at schneider-electric.com]

Hi Mark, Gary,

The Xantrex XW series inverters will  do a frequency shift to cause most 
models of grid-tied inverter to disconnect when the batteries are full, 
while the system is operating in an ac coupled off-grid mode. The 
following app-note describes this operation.

Cheers,

Mark

http://www.global-download.schneider-electric.com/852577A4005D7372/all/8FA29D94B918A0FB8525781F0072FCA7/$File/ac-coupling-app-note(976-0240-01-01_rev-a).pdf

_____________________________________________________________________________________ 


Mark Edmunds, P.Eng.  |   Schneider Electric   |  Renewable Energies 
Business  |   CANADA  |   Director - Advanced Engineering 
Phone: +1-604-422-2609  |   Fax: +1-604-420-1591  |   Mobile: 
+1-604-613-3285 
Email: mark.edmunds at schneider-electric.com  |   Site: 
www.schneider-electric.com/renewable-energies   |   Address: 8999 Nelson 
Way, Burnaby, BC, V5A 4B5, Canada 

*** Please consider the environment before printing this e-mail 




From:
"Mark Frye" <markf at berkeleysolar.com>
To:
<Gary at IcarusSolarServices.com>, "'RE-wrenches'" 
<re-wrenches at lists.re-wrenches.org>
Date:
04/12/2011 09:37 PM
Subject:
Re: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter
Sent by:
re-wrenches-bounces at lists.re-wrenches.org



Gary,
 
I have been looking at some AC coupled stuff lately. The "FSC" is 
propriatary to SMA, Sunny Island to Sunny Boy.  Pretty much anything else 
you need something to sense the voltage of the battery bank so you can 
open a contactor on the AC line to the Fronius when the battery voltage 
gets too high. Once the voltage drops the contactor can close and bring 
the Fronius back on line and then the 5-minute start up delay before it is 
feeding the line again.

Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
www.berkeleysolar.com  
 

From: re-wrenches-bounces at lists.re-wrenches.org [
mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Gary 
Willett
Sent: Tuesday, April 12, 2011 8:35 PM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] AC Coupling Fronius IG Plus 10.0 inverter

Working on a proposal to add battery backup and a generator to an existing 
10kW grid-tie system using the Fronius IG Plus 10.0 inverter.

Does anyone have any experience AC coupling this inverter to a Sunny 
Island 5048, or a Xantrex 6048? Is the Fronius capable of Frequency Shift 
control (FSC) that comes from the battery-connected inverter?

Any other suggested solutions is appreciated.

Gary Willett, PE
Icarus Solar Services LLC


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