Grid Tie inverter, 1kW, USA

[pan]

Hi there,

Can someone propose which GRID TIE inverter can be used in USA (120V, 60Hz) for a hugh piggott 2400mm wind turbine? (800W at 10m/sec wind speed). From what i have seen the SMA inverters windy boy are not available at this power level for the USA grid (?) and the Aurora inverters of Power-one start from 3kW.

thanks a lot

pan

[dnix71]

The Outback GTFX series should work.  http://www.altestore.com/store/Inverters/Grid-Tie-Off-Grid-Capable-Inverters/Outback-2500W-GTFX2524-24VDC120VAC-Inverter/p851/

It says nothing about requiring lots of watts or high voltage to work. The input voltage is certainly low enough. The Outback meets UL1741 so I see no legal reason it couldn't be used.

Do you have batteries and solar in the mix or just wind?

[pan]

Thanks for the reply dnix71,

Our application does't have batteries (or solar pannels) in order to have a lower cost. If i understand well the Outback GTFX needs the (almost) constant voltage of the batteries in order to work. In our application the voltage of the wind turbine (3 phases AC) is rectified and should be inserted to a suitable inverter (via an overvoltage system for the inverter). The DC voltage can vary from 140V to 400V
So i am not sure if the outback inverter can be a solution.

pan

[dnix71]

You have lots of steady wind, then, if the voltage is that high? In that case why not use a WindyGirl overvoltage protector on a WindyBoy 3000.

http://www.windygirl.biz/
http://www.gogreensolar.com/products/sma-windy-boy-3000-us-3000-watt-wind-inverter?gdftrk=gdfV21109_a_7c323_a_7c2152_a_7c24829562

There is nothing in the specs that says you have to max it out for it to work, and it also meets UL1741 and is made to work without batteries.