Interpole help

Discussion in 'Homework Help' started by amilton542, Mar 12, 2011.

  1. amilton542

    Thread Starter Active Member

    Nov 13, 2010
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    how can interpoles permanently fixed in the stator be connected in series with the armature? The only electrical connection to the armature is through the brushes and commutator

    "The correct e.m.f is achieved by passing the armature current through the coils on the interpoles,thereby making the flux from the interpoles proportional to the armature current. The interpole coils therefore consist of a few turns of thick conductor, connected permanently in series with the armature"
     
    Last edited: Mar 12, 2011
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    An ARMATURE is the portion of the generator from which output is obtained. It can be on the rotor OR on the stator.
     
  3. amilton542

    Thread Starter Active Member

    Nov 13, 2010
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    I dont understand, i thought the armature in a DC motor/generator is what rotates, and interpoles are put in place that recieve the same excitation the stator will recieve seperate from the armature excitation to aid arcing and provide a more smooth rotation with more torque, now im reading the interpoles have armature current passed through them, how can the armature be stationary? something must be rotating to provide mechanical output or generation
     
    Last edited: Mar 12, 2011
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    Stator = stationary portion
    Rotor = rotating portion

    Either can be used for input or output, depending on the design.
     
  5. Adjuster

    Well-Known Member

    Dec 26, 2010
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  6. amilton542

    Thread Starter Active Member

    Nov 13, 2010
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    ooooooooooo yeah i get it now. I always had in mind the interpoles had no electrical connection to the armature but they do, ok thanks
     
    Last edited: Mar 12, 2011
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