Tinkering with a small wind/battery/grid-tie system

bp5bp5 Registered Users Posts: 1
Hi Folks, a newbie question here, thanks in advance for your patience!

I have a 24V wind turbine like this one:

and I want to experiment with using it supplement my home power with a grid-tie inverter. I know I need to do this through a battery bank (say starting with some cheap lead acid 12V in series) with a charge controller and I know I can't just connect a grid-tie inverter to the batteries as that would just suck all the current out of them in one go. So I guess I need the grid-tie inverter to disconnect from the batteries once the voltage drops below a certain value?

and I have a single 300W solar panel connected to this mini-grid-tie inverter:

and what I would really like is to be able to pump any available solar/wind power into my household grid (a small amount of storage would be nice but not essential). Can anyone point me in the right direction?


  • mike95490mike95490 Solar Expert Posts: 9,464 ✭✭✭✭✭
    First, most plug-in inverters are not legal for use in USA.

    Second, they are supposed to work with a PV panel, and they regulate their output by moving the MPPT tracking point around - which can't happen with a battery, and unlikely to happen with a wind turbine.

    So, my opinion is that it won't work well at all.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

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