What wind turbine I need

casanovacasanova Registered Users Posts: 4
Hi, I am interesting in add a wind turbine system to just keep charged my batteries. I have installed a solar system. Schneider SW4024, conext 150-60 controller and a 24v battery bank consisting of 2 of 12v AGM 250Ah in series providing 24v because the whole system is 24 volts. As I mentioned I just want the turbine to keep the batteries charged during the night when the power is out and /or when the solar panels are not providing power. I will appreciate if any of you can tell me what size or capacity of wind turbine, controller, etc I need. Thanks

Comments

  • mike95490mike95490 Solar Expert Posts: 9,358 ✭✭✭✭✭
    Most wind turbines need to be up 100' above the landscape and require uncomfortable amounts of wind to generate usable power..  In general, they are a non starter, with lots of mechanical maintenance requirements.
    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 ,

  • ThomThom Solar Expert Posts: 196 ✭✭✭
    I’d pass on the wind power . I have both . Just install more panels .

    Thom
    Off grid since 1984. 430w of panel, 300w suresine , 4 gc batteries 12v system, Rogue mpt3024 charge controller , air breeze windmill, Mikita 2400w generator . Added [email protected] 100w panel with a midnight brat 
  • PhotowhitPhotowhit Solar Expert Posts: 5,650 ✭✭✭✭✭
    casanova said:
    Hi, I am interesting in add a wind turbine system to just keep charged my batteries. I have installed a solar system. Schneider SW4024, conext 150-60 controller and a 24v battery bank consisting of 2 of 12v AGM 250Ah in series providing 24v...
    In general most people here are from the US, aren't many great areas in the US for 'small wind' so yu may not find great advice here. 

    Have you checked your area for it's normal/typical amount of wind? In general you need to have yor generator 30+ feet above any nearby trees, that means a tower 70-80 feet in many areas. Once up you will want to bring the wind turbine down or you up annually for maintenance.

    Typically you will want a separate charge controller for the wind generator as it will need the ability to run a 'dump load' once the batteries are full, unlike solar, which can just be turned off,  A wind generator will continue to make power and need a place for it to go.

    You might describe your system, I think a 24 volt 250 amphour battery bank or 6kWh battery bank would be undersized for most systems requiring a 3400/4000 watt inverter. I have a 4000 watt inverter and have about a 16 kWh battery bank. Also describe your loads, there might be a reason for the large inverter to battery bank ratio, perhaps a large well pump that doesn't run often and minimal other loads...

    There are great areas for small wind, Ireland/Scotland have great wind resources and often minimal trees, and less sun.... So it turns the equation on it's head.


    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Magnum MS4024, Prosine 1800(now backup) and Exeltech 1100(former backup...lol), 660 ah 24v Forklift battery(now 10 years old). Off grid for 20 years (if I include 8 months on a bicycle).
    - Assorted other systems, pieces and to many panels in the closet to not do more projects.
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