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Stepper motor for wind!

Discussion in 'Renewable Energy' started by Wond3rboy, Mar 30, 2009.

  1. Bugster61

    Bugster61 New Member

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    steppers?

    I know this going to sound bad, but everyone keeps talking steppers for small generators.....My question is which ones?....I deal with nothing but DC steppers....I am assuming you guys are talking about ac steppers...cause why would you rectify a dc stepper to dc...seems odd......Can DC steppers be used for generating..something?..Cause in my world dc steppers are a dime a dozen in price compared to ac steppers

    Thanks, Bugster61:eek:
     
  2. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    They are talking about DC steppers - although really there's no such thing, because the process of stepping them means you're providing AC to them anyway.
     
  3. Grossel

    Grossel Member

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    ac/dc - wich one is right?

    Partly agree. If using unipolar you need AC, or can provide "sort of ac" with a H-bridge.

    Steppers with 5 or 6 wires can be run using only 4 simple driver transistors to run them. Logic circuit also of course.

    But smooth movement needs sort of AC. Or can say need an DA converter in adition to controller. But it's AC only when the stepper moves. When it stop, it's not AC no more.
     
  4. dave

    Dave New Member

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  5. be80be

    be80be Well-Known Member

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    I don't know about the rest of you but every stepper i have tried puts out Ac three phase Ac.

    Now on the name tag it will say DC stepper but you get AC
     
  6. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Only bi-polar needs an h-bridge.

    Yes, creating AC to power the motor.

    In many ways it's no different to a brushed DC motor, just that you're replacing the brushes with electronics. The brushes work as a syncronous 'rectifier', effectively creating AC from the DC, and (as a generator) creating DC from the AC.
     
  7. LinearBurn

    LinearBurn New Member

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    I’ve thought a bought using a centrifugal clutch for wind power it would serve 2 purposes i as a flywheel and second a cut off at high wind to slow the turbine as speed increases the pads smash in to the drum breaking the turbine what you think?
     
  8. LinearBurn

    LinearBurn New Member

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    btw i got a 3 phase 5hp indrustral pump motor rated for 408v can i make a generator out of this? i think its a pm but if its not i heard somthing abought using a capasitor on one phase to get 2 phase power? is that the case
     
    Last edited: Jul 12, 2010

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