Has anyone used, or had any luck with the new 1000w wind grid tie inverter AC110v DC15-30v for wind turbine that you see on Ebay? I see there are no dump loads on them, and wondering if they can handle the inconsistent wind speeds. They say to connect a charge controller before attaching to the Inverter. I have Used the SunG Wind inverters before, but both burned up within one year. Looking for something new to try.