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Homework Help: 3-phase delta supply to a 3-phase synchronous motor?

  1. Nov 30, 2017 #1
    1. The problem statement, all variables and given/known data
    Can we use a 3 phase delta supply to a 3 phase synchronous motor who's stator windings are connected in star (wye)?

    3. The attempt at a solution
    I was thinking no, since I read in my notes that the rotor has to be supplied with a "continuous current"

    But I'm not sure. I have to justify my answer. I am also thinking maybe the phase differences won't match up and it won't work? I don't know. Can someone help clarify?
  2. jcsd
  3. Dec 2, 2017 #2


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    Science Advisor

    Star and delta are the two ways to connect three windings. The star may also have a neutral connection.
    If you draw the phasor diagram for both configurations you will see that the voltage of the delta is less than the star.

    Both configurations have three phases with 120° phase separation.
    How could an intelligent synchronous motor tell the difference?
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