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Stator Windings Clarification

Discussion in 'Power Electronics' started by electronicsLearner77, Oct 1, 2020.

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  1. electronicsLearner77

    electronicsLearner77

    93
    1
    Jul 2, 2015
    I want to understand the following configuration suppose if the stator is 3 phase winding (2 pole stator) let us say a,b,c. I know they will be placed 120Degress apart, but if i make it a 6 phase winding(4 pole stator), how they can still maintain that 120Degrees? I know very little about stator winding's procedure, if a detailed explanation will really help me.
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    10,341
    2,247
    Nov 17, 2011
    Make it 60 ° ?
    The angle between the poles doesn't have to be the same as the phase angle between stator currents.
     
    electronicsLearner77 likes this.
  3. Bluejets

    Bluejets

    4,217
    894
    Oct 5, 2014
    It's known as electrical degrees, not physical.
     
  4. electronicsLearner77

    electronicsLearner77

    93
    1
    Jul 2, 2015
    I have drawn the 2 pole 3 phase stator winding below
    upload_2020-10-2_0-57-37.png

    Now my main aim please guide me to understand the 4 pole stator and help to draw a diagram similar to the above. I extend to higher poles once i understand the concept.
    One of the statements from the material is "For a 3 phase machine, the three windings are displaced from each other by 120 electrical space degrees along the air gap periphery".
    That is the reason i see that 120 degrees from a-b and b-c and c-a both electrically and physically. Am I correct? Should a and a' be always 90 Degrees apart as I see above?
    My questions are
    a. Let us assume i start from a, should i always follow the sequence ac'b,a'cb' as shown in the figure? Can it be any other sequence as well for example abc, a'b'c'?
    b. Suppose if i take 4 pole stator, how do i still maintain that 120 degrees between the coils as now the coils need to be closer?
    Hope i get all these doubts cleared.
     
  5. Minder

    Minder

    3,006
    640
    Apr 24, 2015
    I thought it was explained fully graphically to you in the other forum, what didn't you get?
    Each phase has a N&S pole.
    In the case of a two pole motor, each phase has 1 pair of poles.
    The four pole motor was also shown graphically!
    M.
     
  6. electronicsLearner77

    electronicsLearner77

    93
    1
    Jul 2, 2015
    Here the main question is the winding sequence. I have not asked anywhere else the same question.
     
  7. Minder

    Minder

    3,006
    640
    Apr 24, 2015
    It was shown clearly.
    M.
     
  8. electronicsLearner77

    electronicsLearner77

    93
    1
    Jul 2, 2015
    Can you share me privately the link where i have asked and clarified, i still don't understand it, may be i have not seen properly.
     
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