SU1398037A1 - Three-phase pole-switchable winding for 4-6 poles - Google Patents

Description

(21) 4152976 / 24-07

(22) 11/26/86

(46) 05.23.88, Bull. No. 19

(71) Institute of Electrodynamics, Academy of Sciences of the Ukrainian SSR and the Special Design Bureau of the Institute of Electrodynamics, Academy of Sciences of the Ukrainian SSR

(72) I.I. Cr pants

(53) 621.313.333.2.045.58 (088.8)

(56) USSR Copyright Certificate No. 655029, cl. H 02 K 3/28, 1979.

USSR author's certificate number 655027, cl. H 02 K 3/28, 1979.

(54) THREE-PHASE POLE OVERCOMING FOR 4-6 POLES

(57) The invention relates to windings of electric machines-AC. The purpose of the invention is to improve the use of active materials. Three-phase pole-switching winding for 4-6 poles contains 27 coil groups (CG) connected in three three-phase stars with leads from points of parallel connection of phases and zero points of stars. The alternation of the numbers of coils in the CG corresponds to the number of 1.3, 4,2,1,2,2,2,2,2,1,3,4,2,1,2,2,2,2,2,1,3. 4,2,1,2,2,1,2. The phases (F) of one three-phase star include KG with serial numbers 25.3.8 - for the first F, 7,12,17 - for the second F, 16,21,26 - for the third F. In the F of the second three-phase star CG with numbers 5,11, 15 - for the first F, 14,20,24 - for the second F, 23,2,6 - for the third F. In the third three-phase star included CG with numbers 18,22,1 - for the first Ф, 27,4,10 - for the second Ф, 9,13,19 - for the third F. KG with numbers 2,4,7,8,11, 1 3, 16,1 7,20,22., 25, 26 are included opposite to each other, and the coils K: D 9.18,27, the first coil KG 2,4,11,13,20,22, the third coil KG 3,12,21 and the second coil KG 6,15,24 performed { 11 with double the number of turns. 1 il.

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The invention relates to pole-switchable windings of electric machines of alternating current and can find application in multi-speed asynchronous libDC motors, as well as in special machines, such as frequency converters, machines with an internal cascade, etc.

The purpose of the invention is to improve the use of active materials by reducing equalizing currents.

The drawing shows a winding diagram for A and 6 poles for stacking in 72 slots.

The winding contains 27 coil | groups with numbers from 1 to 27, and the alternation of the numbers of coils in the groups corresponds to the series 1, 3,4, 2,1, 2, 2, 1, 2,1, 3, 14 , 2,1,2,2,1,2,1,3,4,2,1,2,2,2,1,2. . B phase of one three-phase star, when connected to the terminal BS, included; coil groups with numbers 25,3,8 for phase 4С (-6С /, 7,12,17 for phase 4С2-6С ,, 16,21, 26 - for phase 4С, -6С. Coils of groups 5,11,15 - are included in phases of the second three-phase star connected to clamp 6C; for phase 4С, -6С ,, 14,20,24 - for phase I4C2 -6C2., 23,2,6 - for phase. IB phase of the third three-phase star,

connected to Zalsim BS, included: coil groups with numbers 18,22, And - for phase 4C, -6Cj, 27,4,10 - for | phase 4С2-6С ,, 9,13,19 - for phase 4С, | ba .

Coil groups with numbers 2,4, 7,8 J1,13,16,17,20,22,25,26 included opposite other groups - the corresponding phases. In this case, the coils of the coil groups 9.18,27, the first coil of the coil groups 2,4,11,13,29,22, the third coil of groups 3,12,21 and the second coil of the coil groups 6,15,24 are doubled number of turns. Switching poles is carried out according to the scheme UUU / UUU.

The magnitude of the differential emf of parallel branches at about 4%, which is more than two times less

Compiler A

Editor N. Yatsola

Tehred M. Didyk

Order 2275/54 Edition 665 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5

the magnitude of the difference EMF of the branches of the known winding. A decrease in the magnitude of the differential emf leads to a decrease in the balancing currents in the circuits of the parallel winding branches and to an increase in the power and efficiency of the motor.

Claims (1)

Invention Formula A three-phase pole-switched winding for 4-6 poles, containing coils grouped into coil groups and grouped into three three-phase stars connected in parallel with the series connection of coil groups in each phase, provided with leads taken from parallel points of phase connection, and leads taken from zero points of the stars, characterized in that, in order to improve the use of active materials, the winding contains 27 coil groups, the alternation of the numbers of coils in each of which corresponds to the row 1,3,4,2,2,2,2,2,2,2 , 1,3, 4,2,1,2,2,1,2, 1,3,4,2,1,2,2,2,2,2, the phases of one three-phase star include coil groups with the order numbers 25,3,8- for the first phase, 7,12,17 - for the second phase, 16,21,26 - for the third phase, coil groups with the numbers 5.11, 15 - for the first phase, 14,20,24 - are included in the phases of the second three-phase star for the second phase, 23,2,6 - for the third fa five PS, the phases of the third three-phase star include coil groups with numbers 18,22,1 - for the first phase, 27,4,10 - for the second phase, 9,13,19 - for the third phase, with coil groups with sequence numbers, 2,4,7,8,11,13, 16,17,20,22,25,26 included opposite groups, and the coils of the coil groups 9,18,27, the first coil of the coil groups 2,4,11, 13,20,22, the third coil of coil groups 3,12,21 and the second coil of coil groups 6,15, 24 are made with double the number of turns. Kedaris Proofreader L. Pilipenko