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

Mark Frye markf at berkeleysolar.com
Tue Apr 12 21:37:06 PDT 2011


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 
 <http://www.berkeleysolar.com/> 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
 <mailto:Gary at IcarusSolarServices.com> 

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