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Rc bldc motor stator shorted or not

Discussion in 'AVR' started by polashd, Sep 21, 2013.

  1. polashd

    polashd Member

    Joined:
    Jan 22, 2011
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    Location:
    Bangladesh
    I re-winded a rc bldc motor (12pol) with 26AWG wire (15 turns per pole).

    After finishing the winding I measured resistance with multimeter to check if there is any short circuit.

    what i found are:

    -R between same phase ends is less then 1 ohm

    -R between one phase to another is around 30 ohm

    -R between phase end to stator is around 20 ohm.



    I'm confused whether it is because of short circuit or Electromagnetic induction caused by power coming from multimeter!!

    According to my knowledge (which is not much) if stator/ Phases are shorted the resistance should be much less, ie. close to that of the same phase ends. And if not shorted there should not be any measurement value on the multimeter.
     
  2. alec_t

    alec_t Well-Known Member Most Helpful Member

    Joined:
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    Location:
    Cardiff, Wales
    Electronic components (e.g. Hall devices FETs, snubbers) connected to the windings will affect the measured values. Measuring resistances accurately in-circuit with just a simple DMM is not straightforward.
     

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