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Where can I find a controller for a 3 Phase AC motor?

  1. Sep 24, 2016 #1
    I'm working on a project with a team in building a motor. My task is to find a controller for the motor, but I haven't had much luck.
    Here are the specs for it :

    Permanent magnet synchronous motor,
    3 phase
    8 pole
    2 layer winding
    100 kw power
    400V

    The motor is AC. If somebody can even point me in the right direction that would help greatly.

    Thanks in advance!
     
  2. jcsd
  3. Sep 24, 2016 #2

    anorlunda

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    Science Advisor
    Gold Member

    Wow, ambitious project.Good luck.

    Why do you need a controller? Variable frequency? Starting?
     
  4. Sep 24, 2016 #3

    russ_watters

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    Staff: Mentor

    If you google "variable frequency drive" you'll get a lot of hits.....but 100 kW is a big motor and this won't be cheap.
     
  5. Sep 24, 2016 #4

    jim hardy

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    Science Advisor
    Gold Member
    2016 Award

    Learn about them by searching on keywords in manufacturers' literature.

    for example
    http://www.eaton.com/Eaton/Products...orsStarters/SoftStartersControllers/index.htm
    http://literature.rockwellautomation.com/idc/groups/literature/documents/wp/150-wp007_-en-p.pdf
    should get you started on distinction between "contactor" "soft start" and "VFD"

    I guess this is a low budget learning exercise ?
    It'd be good experience for you guys to repair one . That'd require you to figure out how they work. They show up on Ebay occasionally
    I found recently in my favorite metal recycle yard a brand new Motortronics 150hp reduced voltage soft starter . Looks just like this one but has some damage to a corner of the circuit board from when they tossed it off the truck at junkyard. I think the guys didn't appreciate what it was..

    http://www.ebay.com/itm/150-HP-MOTO...315964?hash=item3f3eaababc:g:sLUAAOSwajVUOyWU
    motortronics1.jpg
    Plenty of parts in there for a future welder enhancement project, ...(is "Hot Rod Lincoln" too awful a pun ?)

    point being, you don't have to start from absolute scratch.

    old jim
     
  6. Sep 25, 2016 #5
    Thank you so much for your help everyone! I will tell the project manager what you all have written and hopefully provide more answers to what I require.
     
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