multiple grid-tie inverter interaction [RE-wrenches]

[Blair May]

 Jeff I have a XW6048 that feeds into a dist panel that also has a SMA SB 1800. Feeding into itmm in this configuration I DO have issues XW shuts down L2 Hi AC input fault. I tried to moving the XW to the top of the buss bar no good! When I use a XT Suntie w/ the SB system works fine. That being said I have other issues w/ the XW that might be part of the problem. Too much to do to little time. 

Check the basics, "KISS" keep it simple stupid. 

Sent via BlackBerry by AT&T



-----Original Message-----

From: Jeff Yago <jryago at netscape.com>



Date: Tue, 10 Jun 2008 05:34:54 

To:RE-wrenches at topica.com

Subject: RE: multiple grid-tie inverter interaction [RE-wrenches]









I know during grid-tie inverter design and testing one of the tests is anti-islanding (when multiple inverters seeing the output of another inverter on the same grid connection and staying on line after a power outage thinking the grid is still up) and they are designed not to do that.  However, has anyone run into a multiple grid-tie inverter system where side-by-side inverters connected to the same output breaker panel were "affected" by its neighbor?  Maybe the output from one inverter caused enough alternation of the incoming grid sinewave, frequency shift, or voltage that forced another inverter to drop off line because it thought the grid was out of design limits.   



DO any inverter manufacturers indicate there is a limit to how many of their inverters can output to the same sub-panel, or share the same wire feed?  How about limits on how close together (other than heat and ventilation issues).  How about mixing inverter models and brands, for example expanding an existing system and older inverter model or brand no longer available.  I am guessing if this is possible, it would be more likely in a system with a very long "shared" wire run back to the meter base.   Any testing or experience on this?



Thanks,

Jeff Yago



_____________________________________________________________

Netscape.  Just the Net You Need.





- - - -

Hosted by Home Power magazine



To send a message: RE-wrenches at topica.com



Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read



List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php



Check out participant bios: www.mrsharkey.com/wrenches/



Moderator: michael.welch at homepower.com





- - - -
Hosted by Home Power magazine

To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at re-wrenches.org

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------