[RE-wrenches] AC Coupled + CC Grid Feed Input

[jay peltz]

Hi Drake,

I have done this, or I think what you are asking.

I have AC coupled 2 enphase 190s through a transformer to a VFX-3525 in an offgrid situation.

It worked fine.
However I did notice when there were very little loads I got what I think is an AC ripple.
I would see some lights having I think a 60 cycle flicker.

But  I don't think that being grid connected you will see any issues.

jay

peltz power


On May 28, 2014, at 2:47 PM, Drake wrote:

> Hello Wrenches,
> 
> We put a system in a year ago with an Outback GVFX 3524 with 2205 W of PV and a Midnite Solar Classic CC. The system owner would now like to expand the system by another 6 modules.
> 
> Our tentative plan is to AC couple 6 Enphase  M-215s powered by 6 REC 255 W modules to the Outback. This way, the GVFX 3524 would be selling power on its own while simultaneously feeding power back into the grid through its transfer switch.  
> 
> The plan is to drop the voltage to 120 V using an autotransformer before feeding the power into the protected loads panel for AC coupling. 
> 
> Has anyone tried this configuration? Can anyone see any problems?
> 
> Thanks,
> 
> Drake 
> 
> Drake Chamberlin
> Athens Electric LLC
> OH License 44810
> CO License 3773
> NABCEP Certified Solar PV 
> 740-448-7328
> http://athens-electric.com/ 
> 
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