Exploration of Fin Pitch

Discussion in 'Windtura Generators' started by NIU, Nov 11, 2010.

  1. NIU

    NIU WindyNation Engineer

    Hi all-

    New to the forum, but I think there is a lot of valuable information on here. I am a senior mechanical engineering student at Northern Illinois University. I am currently working on a research project on small scale wind turbines. I am currently using a 30VDC motor, unknown manufactorer, I do know that it is permanent magnet with a max output 717 RPM at 30.75V.

    We are using a 3 fin design and testing the fin pitch at 5 different angles to determine which angle produces the greatest power output. What I am looking for is some detailed information about this motor, or 30VDC motors in general. I may be difficult I realize not knowing who manufactured this motor, I will try and find out who purchased the motor and where, it was an online purchase (ebay). The most critical piece of information we are looking for is the efficiency of the motor.

    If anyone could help me out, that'd be great!

    -Andrew Timmerman
  2. windyguru

    windyguru WindyNation Expert

    Well, post a picture of it. I am guessing it is an Indiana General or an Ametek.

    Without a picture or name plate it will be impossible to say.
  3. NIU

    NIU WindyNation Engineer

    I was put into contact with the purchaser of the motor, it is an Indian.
  4. timber

    timber WindyNation Engineer

    Hi NIU,

    Sounds like an interesting project, please keep us posted of your findings.

    As Windy noted, a picture sure would be helpful in trying to identify this motor.
    Are there any numbers stamped on the case?
    Scott is another name you might add to your list of possible manufacturers, but there are many.

    Below is some general information on what you might expect to get from a DC computer tape drive motor (an often preferred permanent magnet motor ).
    After you identify the manufacturer, then you may be able to obtain some specific efficiency ratings from that manufacturer.

    http://www.otherpower.com/otherpower_ex ... otors.html

    Don't forget that you will need a blocking diode ( http://www.windynation.com/products?page=1 )
    to prevent electricity flow from your battery bank to your wind generator.

  5. NIU

    NIU WindyNation Engineer

    Thanks -

    There is some good information on that site. We've been running tests now for about 2 weeks using straight .75m aluminum baldes. Currently the set it up is just producing voltage and a remote USB voltage logger is sampling data on the fly. We are not actually storing any power.

    Once we have all the data processed I will submit some findings.

    I will alos post some photo's of the motor tomorrow when we go to change out another set of blades.

    Thanks again - AT
  6. timber

    timber WindyNation Engineer

    Don't know if this will help but if this looks like your motor then it does have a (possible) part number.
    24VDC motors by Indiana General seem much more common, are you sure it's 30VDC?


  7. NIU

    NIU WindyNation Engineer

    I have attached images taken of the motor, take a look and see if anyone has any input.

    Thanks again!!

    Attached Files:

  8. timber

    timber WindyNation Engineer

    Hi NUI,

    I doubt you will find much more info. on that motor than what you have.
    Unless you can find a source for Indiana General data.
    The PN: Z4010D 53B didn't yield much in my searches.

    I guess from here on ... you may be the best source of information about it ... :)

    Good luck, keep us posted on how it does with a load on it.


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