SU399967A1 - THREE-PHASE DOUBLE-LAYERED INDIVIDUAL - Google Patents

Description

one

This invention relates to pole-selectable windings of AC motors.

The known three-phase two-layer pole-switching windings on the number of slots multiple of 36, with the ratio of the numbers of drug poles, are characterized by a technologically inconvenient distribution of the coils over the slots, asymmetry in the first harmonic, a large number of conclusions.

The purpose of the invention is to simplify the design.

This is achieved in that the winding is divided into PO - equal parts, coils

four

each of which are located in the z / Po groove h

,, z (d - l) zd With numbers from 1+ to - inclusive XOR

but, with the number of pairs of poles p, coil groups are included in each phase, the numbers of which, bypassing the stator, are determined by the formula N (2i-1), each odd coil group consisting of K coils occupying slots numbered l, 5 / C (jV-1) + 1 to 0.5 / C (3 // - 1). Each even coil group consists of 2K coils, occupies grooves from Q, 5K (3N-4) + 1 TO l, 5KN, adjacent coil groups of each phase are opposite, and when the number of pole pairs is P2, in each of the PO parts the winding of each phase is divided the groups according to the included coils, and the numbers of the slots in which the coils of each group of this phase lie, are in the interval determined by the formula:

1 + (8 / - U + QKt 5j 1 + (8; -) K + -} - QK (t +,

moreover, the adjacent groups of phase coils are included in the opposite direction, where:

PI, P2 - the number of pairs of winding poles; i is the phase number, Z is the number of slots (the number of coils of the winding);

d is the sequence number of each of the RO parts,

/ C is a positive integer, /

Zbro

t - number of coil group in phase

O / 2p-1;

S is the number of the groove in which the coil of the t-th group of the i-th phase is located.

The drawing shows the proposed winding for 2pi 8,.

The three-phase winding has six terminals (6Ci-bCs, 8Ci-8Cs) and contains 36 coils located in the slots 1-36. When switching, the direction is changed.

current in half of the coils of each phase. Switching coils from phase to phase does not occur.

Subject invention

Three-phase two-layer pole-switched winding of a two-speed motor with 36 multiples, with a ratio of pole pair numbers of 4/3, with six leads, which in order to simplify the design, the winding is composed of PO of equal parts with the number of zlPo coils in each , moreover, within one part there are 26 coil groups, the numbers of coils in {each of which, starting with the first, correspond to the following row - K, 2 / C, K. 2K. K, 2K, K, K, K, K, 2K, K, 2K, K, 2K. K, 2K, K, 2K, K, K, K. K, 2K, K, 2K, with the coil phase groups in each of the parts divided into two semi-phases, each semi-phase includes coil groups having the following sequence numbers in the above above rade: first half-phase of the first phase - 9, 5, 2, 25, 21; the second half-phase of the first phase is 18, 15, 12,

8, 22; first half-phase of the second phase - 6, 10, 13, 16; the second half-phase of the second phase - 3, 26, 23, 19; first half-phase of the third phase - 17, 20, 24, 14; the second half-phase of the third phase - 1, 4, 7, 11; in each of the semi-phases, the neighboring coil groups are connected in opposite directions, except according to the connected groups 8 and 22, and the same-named semi-phases of all the PO parts are interconnected, where;

PI, PZ - the number of pairs of winding poles;

P1

- - the number of equal parts

hanks;

Z is the number of winding coils; K is a positive integer.

.

TO

l7Z3if56789 fOf7} 2737 rfff677r8 ff2ffZ7ZZ232 2SZffZ72S ff3ffJfJ2333f3536l

Iml

fffy