SU1422309A1 - M1/m2-phase combination winding for dynamoelectric machine - Google Patents

Abstract

The invention relates to a winding of alternating-current electrical machines of the combined type with two separate polar-magnetic fields. common magni-conductor. The purpose of the invention is to expand the field of the winding by obtaining polarity p, at the phase numbers t ,. The winding is made of uniformly displaced coils and is connected in m2 parallel, phase phases, the beginnings of which form τ, phase clamps for polarity p, and the leads from their zero points form additional Fr-phase clamps for polarity PJ. To obtain p, .3 with t, the winding is made of twenty-one coils with t4 3-phase clamps C1, C2, C3 and t2 7-phase clamps A, B, CjD, E, F, C. Phase C1 contains in the first star a coil with the number 1, and for each subsequent star of this phase the numbers of the coils alternate with respect to the previous star with an interval of three coils. For phases C2 and Sz, the numbers of the coils of stars of each subsequent phase alternate with respect to the stars of the previous phase with an interval of seven coils and / L; their step along the slots is y, 3, where Z, is the pole division for polarity p ,. 6 ill., 1 tab.

Description

four

Yu Yu

The invention relates to windings of electric machines of alternating current with a displaced type with two different polarity magnetic fields in the general magic of the conduit.

The aim of the invention is to expand the field of application of the winding by obtaining t / t4 3/7-phaen obmdt k with a pole net p, / p 7/3.

FIG. D depicts a winding circuit with p, FIGS. 2 and 3 are diagrams of EMF for polarity P (7 and respectively; FIGS. 4-6 are the same as not 1-3, but for winding p, / p,

The winding (figure 1 and 4) is made single-layer in 42 slots of twenty-one coils (with numbers from 1 to 21) with a step along the slots, 9 (figure 1) and, 3 (figure 4), where t, 42 / 14 3-plyusnoe division for p, 7. It connects in parallel t, 3-phase connectors, the beginnings of which form t, 3-phase clamps C 1-e3 for polarity, and the leads from their zero points form additional t2 7-phase clamps A, B, C, D, E, F, G for polarity p |. Phase C1 contains in the first star a coil with the number 1, and for each subsequent star of the phase C1, the numbers of the coils alternate with respect to the previous star with an interval of three coils. For phases C2 and SZ, the coil numbers of the stars of each subsequent phase alternate with respect to the stars of the previous phase with an interval of seven coils, as shown in the table.

(360/21) 3 (360/7), which gives the phase alternation of FIG. 3; for p, 6 - (360/21) (360/7) 2, which gives the phase alternation of FIG. 6; for - (360/21) 9 (360/7) 3, which gives the phase alternation in the sequence A-E-B-F-C-G-D in a clockwise direction. Pope with polarity does not induce an emf at terminals A, B, C, D, E, F, G (Fig.2 and 5), and a field with polarity p, j does not induce an emf at terminals C1, C2, NW (fig.Z and 6), i.e. the opposite pole winding clamps are electromagnetically independent and there are no balancing currents in it. Winding coefficients are equal: - Kj, s7 1, 0 and 0.901 (figure 1); with p, / p. -, 1.0 and K 0.975 (figure 4); at p, - К., 1.0 and, 0.901 (figure 4).

In comparison with the known, the proposed winding has extended values of the numbers of pairs of poles and phases. It can be used, for example, in single-machine frequency and phase converters, in contactless combined dual-power machines, etc.

Claims (1)

Invention Formula mj / tg-phase combined electrical winding with a polarity of p, / p ,, made of uniformly displaced coils and connected in t parallel m, phase stars, the beginnings of which form those phase clamps for poles In Figures 1 and 4, the upper row of arrows shows the direction of the three-phase Current while feeding the winding through C1, | C2, Sz (p, 7), and the lower row shows the direction of the seven-phase current when feeding the winding through A, B, .C, D , E, F, G. In Figures 2 and 3, 5 and 6, the EMF vectors are assigned numbers of coils shifted by angles (in electrical degrees): for t-, 7 - (360/21) 7 120, for P5, 3 p, and the outputs from their zero points form additional mj -phase clamps for polarity p, characterized in that, in order to expand the field of use by obtaining t, and P, / Pr 7/3, the winding is made of twenty-one coils with t, 3-phase clamps C1, C2, C3 and t 7-phase1 clamps, phase C1 contains the first star number 1, and for each subsequent star of this phase the numbers of the coils alternate relative to the previous star with an interval of three coils, and for phases C2 and Sz, the numbers of the star coils of each subsequent phase alternate relative star of the previous phase with an interval of seven coils and they move along the grooves is equal to, where s, - for the polarity pole pitch p. : , 20 ZJ f 2 J 5 6 7 8 9 Y n 12 131 15/5 17 18 9 / 6 7 8 9 Ю 1П2 JS 1 15 W 17 18 J9 20 2 , / ,,, 1; ,, I ,, ,, ;; i. I j i C1 C2 C3 F B G t C / fae. p2-d Pl 7 . Jj / s 321 go  Paa.S Compiled by A. Ketsaris Editor Oh, Golovach Tekhred L. OliPkykCorrector V.Romanenko Order A436 / 52 Circulation 665 VPIIPI USSR State Committee for inventions and discoveries P3035, Moscow, Zh-35, Raushsk nab., 4/5 ig.6 Subscription