SU866652A1 - Three-phase pole-switchable winding of two-speed motor - Google Patents

Description

(54) THREE-PHASE SURFACE TURNING TWO-SPEED ENGINE Winding

. The invention relates to pole-switched windings of electric machines of alternating current and can be used in two-speed motors. Three-phase pole-switched windings are known for two numbers of pole pairs, made only with a number of slots 54 times multiple, providing switching of poles with respect to 3/2 2 and soloing only with a number of holes multiple of 48 3. The most close to one M technical solution to the invention is A three-phase two-layer pole-switchable winding of a high-speed motor with a ratio of 4/3 pole pair numbers, containing a PO of equal parts with the number of Z / PO coils in each, o6v coil groups forming phases divided into two half-phases, provided with leads from the beginning of the phases and the points of connection of the semi-phases. 26 coil tubes 4 are located within one part of the winding. A disadvantage of the known pole-switching winding is the greater laboriousness due to the presence of a large number of coil groups. The purpose of the invention is to simplify the construction of the winding by reducing the number of coil groups. The goal is achieved by winding a single layer with a number of coils that are multiples of 18, within one part of which 14 coil groups are located, the number of coils in which, for example, starting with the first, correspond to the row K, K. 2K, K, 2K, K, K, K, K. 2K, K, 2K, K, K, each coil group having the following sequence numbers in the given range are included in each semi-phase: the first semi-phase of the first phase is 1 and 5; the second half-phase of the first phase is 8 and 12; the first half-phase of the second phase 2, 4 and 6; the second half-phase of the second phase - 9, 11 and 13, the first half-phase of the third phase - the 3rd 7th second half-phase of the third phase - 10 and 14; in each of the second-phase semi-phases; neighboring coil groups included counter

Pj - the number of pairs of winding poles; 0-1 J- - - - the number of identical parts of the winding;

the number of winding coils; positive integer

TO

1вРо

While the coils of the coil groups 2, 6, 9 and 13 of the second phase are made with shortened ujaroM.

The drawing shows a diagram of the winding on the 8 and 6 poles with 36 slots of the stator.

In this case, PO 1, Z 18, K T. In this case, the alternation of the numbers of coils in the coil groups corresponds to 1, 1, 2, 1, 2, 1, 1, 1. 1, 2,1, 2, 1, 1 .

In the first of the first phase, connected to the terminals 8Cj - 6Ci, are included according to the coil groups with numbers 1 and 5; in the second half-phase of the first phase, connected to the terminals BS - 8Сз, included according to the coil troupe 8 and 12. In the first half-phase of the second phase, connected to the terminals 8С2 - бСг, included are the coil groups with numbers 2 and 6 and opposite them - 4; in the second half-phase of the second phase, attached to the BSG-SCi clamps, coil groups numbered 9 and 13 are included and opposite to them AND, the coils of coil groups with chambers 2 and 6, 9 and 13 being made with shortened steps. In the first half-phase of the third phase, connected to the terminals 8Cj - BS3, the coil groups with numbers 3 and 7 are included according to the second half-phase of the third phase, connected to the terminals of BS3 - 80, included in accordance with the coil groups with numbers 10 and 14.

The proposed winding is simpler in practical implementation, since it contains a smaller number of coil groups, 14 as compared to 26 in the known, and fewer inter-ball joints. In addition, the winding provides a more rational ratio of inductions for different numbers of poles and, consequently, the best characteristics of the motor, since the winding coefficients at 2p 8 and 2p 6 are equal to 0.832 and y / 0.88, respectively, compared to 0.94; To 0.62 in the famous.

Claims (4)

1. Three-phase pole-switched winding of a two-speed motor with the ratio of the number of pairs of poles Pj / Pj 4/3, containing the PO of equal parts with the number of Z / PO coils in each (connected to the coil groups, forming phases, divided into two half-phases, provided with leads from the beginning phases and points of connection of semi-phases, characterized in that, in order to simplify the design and, the winding is made single-layer with the number of coils that are multiples of 18, within one part of which 14 coil groups are located, the number of coils in each of which They correspond to the following lines: K, K, 2K, K, 2K, K, K, K, K, 2 K, K, 2K, K, K, in this semi-phase included catutlechic groups having the following sequence numbers in the above pde: first half-phase of the first phase - 1 and 5; - the second half-phase of the first phase - 8 and 12; the first half-phase of the second phase - 2, 4 and 6; the second half-phase of the second phase - 9, 11 and 13; the first half-phase of the third phase - 3 and 7; the second semi-phase of the third phase is 10 and 14; in each of the semi-phases of the second phase, the adjacent coil rpyraibi are included in the counter, where about where P ,, Pr - the number of pairs of winding policies; Р Р p t - h P-f f - the number of identical parts of the winding; Z K - the number of winding coils - whole positive number, K 2. Winding according to claim 1, 1, 1, 2, 6, 6, so that the coils of the coil groups 2, 6, 9, and 13 of the second phase are made with a shortened pin ,. Sources of information taken into account in the examination 1. USSR author's certificate N 399969, cl. H 02 K 3/28. 2. USSR author's certificate number 399971, cl. H 02 K 3/28. 3. The autorekoy certificate of the USSR N 399972, cl. H 02 K 3/28. 4. USSR author's certificate N 399967, cl. H 02 K 3/28.