# Stator Windings Clarification

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

1. ### electronicsLearner77

162
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 KappModeratorModerator

11,444
2,628
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

4,765
999
Oct 5, 2014
It's known as electrical degrees, not physical.

4. ### electronicsLearner77

162
1
Jul 2, 2015
I have drawn the 2 pole 3 phase stator winding below

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

3,076
657
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

162
1
Jul 2, 2015
Here the main question is the winding sequence. I have not asked anywhere else the same question.

7. ### Minder

3,076
657
Apr 24, 2015
It was shown clearly.
M.

8. ### electronicsLearner77

162
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.