SU1099355A1 - Stator winding - Google Patents

Abstract

STATUTE WINDOW With numbers of pole pairs 3/1, made of distributed coil groups connected into two three-phase stars with three-phase leads for polarity p and additional leads from their zero points for polarity p, different from that in order to simplify the design and improve parameters for polarity p, it contains nine coil groups, the output of the first phase is formed by the beginning of the first group, the end of which is connected to the beginning of the fourth and seventh groups, the output of the second phase is formed by the beginning of the fifth group, the end to The second is connected to the beginnings of the second and eighth groups, the output of the third phase is formed by the beginning of the ninth group, the end of which is connected to the beginnings of the third and sixth groups, and the ends of the second, § third, fourth and sixth, seventh, sections are connected to these two additional outputs (I eighth.

Description

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The invention relates to coils of combined electric machines and can be applied, for example, in single-machine frequency and number of phase converters.

Known combined electric windings are made of distributed coil groups connected in phases in two parallel branches, the beginnings of which form three-phase clamps for polarity 1, and their ends are connected in two complementary clamps for polarity 6 1 j

Their disadvantages are limited scope.

Closest to the invention to the technical essence is a combined stator winding with the numbers of pole pairs 3/1, made of distributed groups, connected in each phase into three. Parallel branches with additional terminals. The axes of the groups of the parallel branch are shifted between each other by, the angle 2Ti / K and the parallel branches of each phase are aligned with each other by an angle of 2ii / 3K rad and their ends are connected via capacitors, and additional conclusions are made from the points where the groups connect to the capacitors, where K is integer C2.

The disadvantages of such a winding - the complexity of the design due to the presence of capacitors.

The purpose of the invention is. simplification of structure and improvement of parameters for

POL OCHOCTI Ru

This goal is achieved by the fact that the stator winding with the number of pairs of poles pyPj 3/1 is made of distributing coil groups connected into two three-phase stars with three-phase leads for polarity p and additional leads from their zero points for polarity p contains nine coil groups, the output of the first phase is formed by the beginning of the first group, the end of which is connected to the beginnings of the fourth and seventh groups, the output of the second phase is formed by the beginning of the fifth group, the end of which is connected to the beginnings of the second and eighth groups, the output of the third phase s is formed by the beginning of the ninth group end is connected to the beginnings of groups

the third and sixth, and the ends of the second, third, fourth and sixth, seventh, eighth groups of

FIG. 1 shows the winding circuit of FIG. 2 is its integral MDS curve for the polarity of FIG. 3 is its EMF diagram for polarity P, 3.

The winding (fig. 1) is made single-layer in eighteen grooves of nine coils (numbered 1 to 9) with a step Y 9. The clip of the first phase C1 forms the beginning of coil 1, and its end is connected to the beginnings of coils 4 and 7, the clip of the second phase C2 - the beginning of the coil -5, and its end is connected to the beginnings of coils 2 and 8, the clip of the third phase NW - the beginning of coil 9 and its end is connected to the beginnings of coils 3 and 6. The ends of coils 2 - 4 are connected to an additional pin 01, and the ends b - 8 - to the additional pin 02. For the clips C1, C2, NW, the pole is the winding p 3 (Fig. - 1, the upper row of arrows), and for the clips 01 and 02 The polarity of the winding P2 1 (Fig. 1 is the bottom row of the arrows of the direct current. In the directions of the direct current in the winding (Fig. 2) the integral curve of the MSC is constructed for the polarity of P2 1. In Fig. 3, the ECS vectors are assigned the numbers of coils, from where it is seen that the alternating field with a polarity of p 3 on the conclusions 01 and 02 does not induce an emf.

In the proposed winding, a third part of the coils is removed from the circuit — between pins 01 and 02, which improves the winding parameters for polarity, decreases by 1/3 the resistance for copper loss, improves the shape of the MDS curve.

Thus, the proposed winding, in comparison with the known one, has a simpler design (there are no capacitors) and improved parameters for the polarity of p. It can be used, for example, in single-machine frequency and phase converters, as well as in other types of combined electrical machines and devices with two polarized magnetic fields.

Claims (1)

STATOR WINDING with the number of pairs of poles P ₁ / P ₂ = 3/1, made of distributed coil groups connected in two three-phase stars with three-phase leads for pole ₃ and additional leads from their zero points for pole ₂ , characterized in that in order to simplify the design and improve the parameters for the pole p _2, it comprises nine coil groups ,, conclusion of the first phase is formed by the beginning of the first group, whose end is connected to the principles of the fourth and seventh groups, the output of the second phase is formed by the beginning of the fifth group, horse which is connected to the beginnings of the second and eighth groups, the output of the third phase is formed by the beginning of the ninth Group .konets which is connected to the beginnings of the third and sixth groups, and in two additional output connected to said second ends of the groups, § third, fourth, sixth, seventh, eighth ^. SU „, 1099555>