Lap and Wave Winding: Conditions/Equations of Pitch | DC Machines

[@surendrakverma555]

Good 🙏🙏🙏🙏 Thanks

[@physicsohind9034]

Very nice sir

[@jimitkshukla]

Thank you dear 😊

[@olivierj.2435]

Why are you saying that for lap winding yb = yf +- 2 ? For simplex it's not yb = yf + 1 ? Thank you

[@jimitkshukla]

In lap winding, both Yb and Yf are odd number and of opposite sign. They cant be equal. They differ by 2 or multiple of 2. If it is simplex lap winding, and if Yb > Yf, then Yb = Yf + 2. If Yb < Yf, then Yb = Yf - 2. So Yb = Yf (+/-) 2. (plus or minus). In general, Yb = { Yf (+/-) 2m }, where m = 1 for simplex lap winding and m = 2 for duplex lap winding. And so for simplex it is not Yb = Yf + 1. It is wrong.

[@asifmt8047]

Why average pitch( yb+yf)/2 is taken as pole pitch Z/p

[@Saiteja-bg9gj]

But in lap winding the number of slots doesn't equal to number commutator segments nor either coils..but coils are equal to commutator segments.