SU1252868A1 - Three-phase combined winding for electric machine - Google Patents

Abstract

The invention relates to electrical engineering and can be used in one-machine frequency and number phase converters. The purpose of the invention is to expand the field of application by obtaining the numbers of pairs of poles P / p 10/2. The winding is connected in two 2, parallel three-phase stars, the beginnings of which form clips C1, C2, Sz for polarity p 10, and conclusions from their zero points form clips 01 and 02 for polarity p 2. In the phase stars, the coils are connected in series according to and have the numbers: for phase C1, 1, 7, 10, 19, 4 in the first star and 16, 22, 25, 28, 13 in the second star; in phase C2-2 ,. 8, 14, 20, 5 in the first star and 18, 24, 30, 27, 12 - in the second star. In each phase, the ends of the coils with numbers 10 and 25 in the C1 phase, 14 and 29 in the C2 phase, 15 and 30 in the C3 phase are connected together. The groove pitch of the grooves is five times longer than the pole division for polarity p, .2il. y (L 28 2930 1 2 3 H 5 6 7 5 5 7ff / Mf / J W 75 I / 7 18 3 2Ya 21 2222 24 2526 27 SG S2 NW RgY P2 2 to ate 1C 00 O oo

Description

I

And (Gaining refers to the windings of a combined type AC electric machine and can be applied, for example, in single-machine frequency and number of phase converters, etc.

The purpose of the invention is to expand the field of application by obtaining the numbers of pairs of poles p / p 10/2, and improving the parameters.

Fig, 1 shows the unfolded scheme of the proposed winding; figure 2 - EMF diagram for pole position.

The winding (figure 1) is made single-layer in 60 grooves of thirty coils, with numbers 1-30, with a step of coils along the grooves in 5 L, 5-60 / 20 15, where t is the pole division for p 10. It is connected in two parallel three-phase stars, the beginnings of which form three-phase clamps C1, C2, Sz for polarity p 10, and the outputs from their zero points form two additional clamps 01 and 02 for polarity p 2. In the phase stars, the coils are connected in series according to and have the numbers: C1 - 1, 7, 10, 19, 4 in the first star and 16, 22, 25, 28, 13 in the second star; in phase C2 .- 2, 8, 14, 20, 5 in the first star and 17, 23, 29, 26, 11 - in the second star; in phase SZ-3, 9, 15, 21, 6 in the first star and 18, 24, 30, 27, 12 - in the second star. In each phase The ends of the coils with numbers 10 and 25 in phase C1, 14 and 29 in phase C2, 15, and 30 in phase C3 are connected together. The upper row of arrows in Fig. 1 shows the directions of the currents when the winding is powered through the clips C1, C2, NW by the three-phase current (p 10), and the lower row at the | powering of the winding through the clips 01 and 02 by the constant p, 2). On the EMF diagram (FIG. 2), the coil numbers are assigned to the EMF vectors. The field with the polarity Pi 10 (Fig. 2) does not induce an emf at the additional terminals 01 and 02. Thus, the winding (Fig. 1) is equivalent to two windings: three-phase with p 10 and direct current winding with p 2. Direct current, supplied to the winding through additional clamps 01-02, does not flow around part of the coils of the phases. As a result, the winding parameters for pole polarity p are improved: the shape of the GVA curve is improved, the losses in

528682

copper. The indicated compounds in each

phase between the ends of coils 10 and 25, 14 and 29, 15 and CS (Fig.2) act as equalizers for pole positions 5 P - 10, as a result of which winding parameters are improved for pole polarity p: the sensitivity of the winding to the magnetic asymmetry of the machine is reduced, and the magnetic noises and vibrations.

ABOUT,

In comparison with the known, the proposed winding has an extended scope and improved parameters.

) 5 The proposed winding can be used in combined electromachine and electromagnetic devices with two-pole polarized magnetic fields. Its use allows to simplify

20 design of the machine,

reduce the consumption of copper and insulation, increase energy parameters and operational reliability of the machine, expand the scope of application.

25

Claims (1)

Invention Formula Electric three-phase combined winding with numbers - pairs of poles 30 PI / P is made of thirty spatially displaced coil groups and connected into two parallel three-phase stars, the beginnings of which form tri-phase clamps C1, C2, , Sz for polarity p, and the conclusions from their zero points form two additional clamps for polarity p, characterized in that, in order to expand the field of application Q by obtaining the numbers of pairs of poles, p / p 10/2, and also by improving the parameters, in the phase stars, the coil rpyni b are connected in series according to and have numbers for phase C1 1, 7, 10, 19, 4 in the first star and 16, 22 , 25, 28, 13 in the second star., For phase C2 - 2, 8, 14, 20, 5 in the first star and 17, 23, 29, 26, J1. In the second star, for the C3 phase - 3, 9, JQ 15, 21, 6 in the first star and 18, 24, 30, 27, 12 in the second star and in each phase the ends of the coil groups are numbered 10 and 25. The S phases are ei, 14 and 29 in the C2 phase, 15 and 30 in the NW phase, and the groove pitch is five times longer than pole division for polarity p. 29NC4 Editor P.Kossey Order 4627/53 Circulation 631 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, F-33, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 F "/ g.2 Compiled by A. Ketsaris Tehred M. Khodanych Proofreader I. Butt ha