voltage control

ws9876ws9876 Posts: 328Solar Expert ✭✭✭
would this work..?you have a wind turbine and want 27-33 volts( 24v battery) out of it but not more. You dont want buy a clipper or controller.
so you run your 1- 6 ga wire into 5 smaller wires.You use components to get the voltage to divide evenly among the wires. 30v becomes
6 v each on 5 wires.On 1 of the wires you put an exit to ground thru a 7 volt zener diode.So as the voltage rises to 7 volts per wire that wire bleeds off its 7 volts.That gets you down to about 28.You also put a 10 volt zener( rough estimate) on another wire so at 50 volts you would lose 17 volts total and get approx. 33 volts. (these values are not exact).You would have to combine the voltages again before the charge hit the batteries. What do you think of this way to avoid overvoltage...??

Comments

  • mike95490mike95490 Posts: 7,790Solar Expert ✭✭✭✭
    What do you think of this way to avoid overvoltage
    Give it a whirl, what's the worst that could happen?  fire ?  batteries boiling ? 

    But first study up on 7 v zener diodes and the other magical components you have not listed 
      (You use components to get the voltage to divide evenly among the wires)



    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 ,

  • EstragonEstragon Posts: 2,607Registered Users ✭✭✭✭
    ... and where is the current going when the battery is full and it's still windy?
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • mike95490mike95490 Posts: 7,790Solar Expert ✭✭✭✭
    edited August 7 #4
    Estragon said:
    ... and where is the current going when the battery is full and it's still windy?

    The turbine overspeeds, and as it looses blades, it slows back down !   A Clipper box is much more complex than a couple zener diodes on massive heat sinks
     (years ago at burning man, in the Alternative Energy Zone camp, there was a running joke about razor blades and wind turbines, and a couple of times, the masts for the turbines buckled in gusts)
    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 ,

  • EstragonEstragon Posts: 2,607Registered Users ✭✭✭✭
    I see. So the issue is self-limiting... I had a thought that as blades came off, the rotor would become unbalanced and the tower would do a dancing Gumby sort of thing :smile:
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • mike95490mike95490 Posts: 7,790Solar Expert ✭✭✭✭
    Estragon said:
    I see. So the issue is self-limiting... I had a thought that as blades came off, the rotor would become unbalanced and the tower would do a dancing Gumby sort of thing :smile:
    Self limiting like Galloping Gertie



    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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