Sections: Armature | Commutator | Questions

Armature Winding and Core

<-- Back Items 01 - 11

Item 11. Total number of face conductors, Z
Subject for correction, use Z = (p Dq) / I_c
Subject for correction, when the number of slots, S is finalized.

Item 12. Number of Slots, S
Subject for correction: S = Z / C_s
Limited to the circumference of the armature, 2p r
Should be a whole number.

Item 13. Number of Conductor per slots, C_s
None, usually assumed.
Subject to the space within the slot width.
Usually, 4.

Slots per pole, S/p
Use: S/p.
Should be an integer plus 1/2.

Slots per pair of pole, S/p/2
Use: S/(p/2) Should be an odd integer so that the Slots per pole is feasible.

Slots per pole arc [integer], S x r
Use Slot per pole x r
Should be an integer

Item 14. Axial length of armature core, gross, l_a
Determined from the final value of the output factor, l_aD². Subject for correction if flux density at item 15 is desirable.

Item 15. Flux per pole (open circuit), F
With final Z, use: F = (V x hz x 6 x 10⁸) ¸ (p x N x Z)

Item 16. Pole Pitch, t
With final D, use: p D / p

Item 17. Pole arc, r t
With final t
This will result to final value of l_a ¸ (t r)

Item 18. Area covered by pole face, sq. in, l_a t r
Use: l_a t r
Compare result of B"_g of item no.4 with standard.

Items 19 - 23

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