SU894827A1 - Combined three-phase/single-phase winding of ac electric machines - Google Patents

Description

one

The invention relates to windings of electric machines of alternating current and can be applied, for example, in engines with a rolling rotor.

Combined electrical winding windings are known, made in the form of parallel branches for Pf polarity, each of which contains spatially shifted coils and has the findings of middle lines that are the beginning of the phases for P polarity. The angle between the axes of the branch coils is

25G pleased, and the number of turns in the coil

PI + RA

proportional to the angle of its shift relative to the axis of the branch D.

The disadvantages of these windings are the complexity of the design, the large losses from the balancing currents in the branches, and the limited scope.

The closest to the technical essence and the achieved result to the proposed is a three-phase-single-phase combined winding with numbers of pole pairs 6: 1, containing 12 coil groups connected in phases into two parallel branches, the beginnings of which form the clamps of the phases, and the horse, are connected to two - zero conclusions.

the PJ polar pole clips, in one branch of which the first and opposite included eighth groups are connected in series, the second and seventh included, and the numbers of the phase groups alternate with an interval of four groups 2,

A disadvantage of the known winding is the limited scope.

ten

The purpose of the invention is to expand the field of application by obtaining the numbers of the poles 2P, 10 and.

This goal is achieved in that the winding contains 12 coil

15 groups and in phase are connected in series the groups of the first and counter-included twelve. For one branch, pole and counter-included seventh for the other branch.

2Q

FIG. Figure 1 shows the unwrapped winding circuit. in fig. 2 and 3 are diagrams of EMF coils, respectively, for 2P5 pole positions 10 and, the EMF vectors are assigned the coil numbers.

25

The winding (Fig. 1) is made single-layer and Z 24 grooves with a pitch at C. Z / 2P., "" S 3 and contains 12 coils with numbers from 1 to 12. In phase C1, the first coils are connected in series and

30 counter twelve

Claims (1)

Claim Combined three-phase-single-phase winding of electrical AC machines, containing 12 evenly distributed coil groups connected in phases in two parallel branches, the beginnings of which form phase clamps, and the ends are connected to two zero terminals, which are clamps for the P ₂ pole, whose phase group numbers are alternate with intervals in four groups, I otlichayuschayas in that, in order to expand the application receipt by numbers of pairs of poles P ₂ P ₊ = 6; 5, connected in series in phase and opposite the first group included Twelve to one branch, and the sixth. counterclockwise seventh for another branch.