SU1205230A1 - Versions of combined three-phase - one-phase winding for electric machine - Google Patents

Abstract

1. Combined three-phase single-phase electric machine winding with numbers. pairs of poles made in 24 (3-slot grooves of separated coil groups with three concentric coils with groove steps 9.7 and connected into two parallel three-phase stars, the beginnings of which form three-phase clamps for polarity p, and their zero points are two additional clamp for pg polarity, coil S 1 // 2. / Z ki kalsda groups of which are connected in two subgroups and in phases subgroups of coil groups are connected in series with numbers 1 + Sq in the first phase, 3 + 3k in the second phase, 5 + Зк - in the third phase with the opposite inclusion of subgroups h with respect to subgroups of odd groups, characterized in that, in order to simplify the design and manufacture, improve copper utilization and expand the field of use, the first subgroup contains two coils c and 9, and the second subgroup is coil c, the first star of the phase includes the first subgroups of odd and second subgroups of even phase coil groups, and the second star - second subgroups of odd and first subgroups of even phase coil groups, the coil with is located in the grooves single-layer and has 2-Wn turns, and coils with and 7 are located in the slots in two layers and have Wn turns, where p ,,, 1,2,.,.,

Description

2, Combined three-phase-single-phase electric machine winding with numbers of pole pairs, completed in 24p, slots from 6p, distributed coil groups with two single-layer concentric coils each with groove steps and 7, and connected in two / parallel three-phase stars The beginnings of which form three-phase clamps for polarity p. and their zero points are two additional clamps for polarity p, the coils of each group of which are connected to two subgroups with an external coil in the first subgroup and with an internal coil in the second subgroup and in phases are connected in series

one

The invention relates to the windings of a combined AC electric machine and can be used, for example, in single-machine frequency and number phase converters.

The purpose of the invention is to simplify the design and manufacture, improve the use of copper by making the coils with equal turns and uniform filling of all the slots, as well as expanding the field of application by obtaining the numbers of pairs of poles 1/6.

FIG. 1 shows a diagram of the proposed winding in the first embodiment; in fig. 2 - the same, according to the second option; in fig. 3 and 4 are diagrams of EMF. Subgroups of winding for pole position (Fig. 3) and (Fig. 4),

The winding (Fig. 1 and 2) is made with a polarity P; | 1 in 24pi 24 slots from br-) 6 distributed coil groups (with numbers from 1 to 6) with concentric coils and each group contains two subgroups. The winding is connected in two parallel three-phase stars, the beginnings of which C1, C2, Sz form clamps for pole position, and their zero points are two additional clamps 01 and 02 (Fig. 3) for pole position P}, 6. In phases, the coil groups are numbered 4 for phase C1 and 6 for phase C2 and 2 for phase

05230

subgroups of coil groups with NZK numbers in the first phase, 3 + Zk - in the second phase, 5 + Zk - in the third phase with counter-inclusion of subgroups of even coil groups relative to subgroups of odd coil groups, characterized in that, in order to simplify the design and manufacture , improving copper utilization and expanding the field of application, the first subgroups of odd and the second subgroups of even phase coil groups are included in the nepBjTO phase star, and the second subgroup of odd numbers and the first subgroups of even

coil phase groups, where 1/6, 1,2, ..., (2p, -1).

NW and subgroups of even coil groups are included in phase stars opposite to subgroups of odd coil groups. In the phase, the first star includes the first subgroups of odd and the second subgroups of even coil groups, and the second star includes the third subgroups of odd and the first subgroups of even coil

phase groups. FIG. The first and second subgroups are assigned numbers of groups, and the second subgroups are assigned the same numbers, with a prime. The same designations are accepted on the EMF diagrams (Fig. 3).

and 4). .

In the winding in the first embodiment (Fig. 1), the coils of the groups have steps along the grooves yfi 11, 9 and 7, the coil with the Pack 11 is located in the grooves in a single layer

and has the number of turns 2 Wjf, and the coils with Ug, 9 and 7 are located in the slots in two layers and have the number of turns Wt (,. The first subgroup includes the coils c and 9, and the second subgroup is formed by the coil c. All the grooves have the same number of turns 2 WK and winding coefficients are: for position - KC ,, 925J for polarity - KoJb 0.707.

In the winding of the second option

(Fig. 2) the coils are made single-layer and have T steps in the grooves and 7, the first subgroup is formed by the coil c, and the second subgroup is the coil

from the coil have the same number of turns W, and the winding factors p avny: KgSn 0.8924: Sq b 0.707.

The upper row of arrows in FIGS. 1 and 2 shows the directions of the currents when powering the winding through clamps C1, C2 and Sz by three-phase current (P;, 1), and the lower row - when powering the winding through clamps 01-02 with a single-phase current ().

From the diagram of the EMF of the winding for the polarity p, 1 (Fig. 3) it can be seen that the field with pole position 01 - 02 does not induce an emf, and from the diagram

EMF for polarity (Fig. 4) view- 6, 6

05230 4

but that the field with polarity does not induce the EMF on clips C1, C2, NW.

The proposed winding, unlike the prototype winding, has the same filling of all the slots and the best use of copper, can be used in electric machines and electromagnetic devices with two combined magnetic fields, for example in single-machine frequency and phase converters, in contactless AC machines with combined exciter in ferromagnetic controlled reactors with rotating magnetic

ten

five

FIG. 2

02

NW

Editor M. Dylyn

Compiled by A. Ketsaris Tehred J. Castelevich

Order 8535/55

Circulation 645Subscribing

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Proofreader M. Pojo

Claims (2)

1. Combined three-phase-single-phase electromachine winding with numbers. pairs of poles p ^ Pj, made in 24 ^ grooves of 6p, separated by coil groups. with three concentric coils c 'moves along the slots at _n = 11,9,7, and connected in parallel to two three-phase star, the start of which form three-phase terminals to the polarity p, and their zero points - two additional clamping for the polarity p _r ki each group which are connected into two subgroups and in phases the subgroups of coil groups with numbers 1 + Зк in the first phase, 3 + 3к in the second phase, 5 + Зк - in the third phase with the counter inclusion of subgroups of even groups relative to subgroups of odd groups, are connected in series characterized in that, in order to simplified In order to design and manufacture, improve copper utilization and expand the scope, the first subgroup contains two coils with y _n = 11 and 9, and the second subgroup contains a coil with y _n = 7, 'the first subgroup is included in the first star of the phase! the odd and second subgroups of even phase coil groups, and the second star the second odd subgroups and the first subgroups of even phase phase groups, the coil with y _n = 11 is single-layer in the grooves and has 2¾ turns, and the coils with y _n = 9 and 7 located in the grooves two-layer and have VI * turns, where P (/ p _r = 1/6, k = 0,1,2, ..., (2 _{P <} -1). I, coil Figure 1> 2. Combined three-phase-single-phase electromachine winding with the numbers of pole pairs p </ p £, made in 24p, grooves of 6p, distributed coil groups with two single-layer concentric coils in each with groove steps of _n = 11 and 7 and connected in two parallel three-phase stars, the beginnings of which form three-phase clamps for the P ₁ pole, and their zero points are two additional clamps for the P ₂ pole, the coils of each group of which are connected — two subgroups with an external coil in the first subgroup and connected. with a training coil in the second subgroup, and in phases the subgroups of coil groups with numbers 1 + Зк in the first phase, З + Зк - in the second phase, 5 + Зк - in the third phase with the opposite inclusion of subgroups of even coil groups relative to odd subgroups are connected in series coil groups, characterized in that, in order to simplify the design and manufacture, improve the use of copper and expand the scope, the first phase star includes the first subgroups of odd and the second subgroups of even phase coil groups, and the second star subgroups of odd and first subgroups of even coil groups of the phase, where P (/ pz = 1/6, k = 0,1,2, ..., (2p ₍ -1).