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linear brushless motor

Discussion in 'Electronic Design' started by Jamie M, Mar 10, 2013.

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  1. Jamie M

    Jamie M Guest

    Hi,

    I want to make a small linear brushless motor with only two pieces
    (magnets and winding), instead of using three layers with the copper
    winding in between, I'd like to just have one magnet layer and then the
    stator attached to back iron on the other layer. I guess this will
    produce eddy currents as the back iron moves across the magnets and may
    only allow for slow linear motion. Are there any other ways to make a
    linear brushless motor with two pieces like this? I guess one option is
    to not use back iron, but then there will be lower field strength in the
    motor.

    Here is a picture of a "two piece" (magnets, winding) linear motor:
    http://pmmotor.com/Images/LinearMotorsFlatSlotless.jpg
    Is that back iron on the top of the winding?

    "three piece" (magnet, winding, magnet) linear motor:
    http://magneticdamping.com/Images/LinearMotorsBalancedDoubleMTSlotted.jpg

    cheers,
    Jamie
     
  2. Guest

    http://www.freepatentsonline.com/6828699.html



    -Lasse
     
  3. josephkk

    josephkk Guest

    Check the literature on "Mag-Lev trains".

    ?-)
     
  4. Greegor

    Greegor Guest

    josephkk > Check the literature on "Mag-Lev trains".

    And rail guns?
     
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