SU1048550A1 - Method of laying two-phase two-layer winding - Google Patents

Abstract

METHOD FOR LAYING A TWO-PHASE two-layer winding with an even number of concentric coil groups of each phase by partially filling the groove aktivnmi the coil art ronami, located in the upper and lower portions of the groove, characterized in that, in order to increase productivity and simplify the laying technology due to the symmetry of the stacked phase , phase 1 coil groups with odd sequence numbers are placed in the lower parts of the slots, then all phase 2 coil groups are laid in such a way that one half of the active sides of each Rupp coupled la, upper parts of grooves and the other half - the lower part of the slots, whereupon the coil stack of the group of the 1st phase with even sequence numbers in the remaining upper part 23 § gg kifrJ Fi1.1.

Description

The invention relates to methods for laying two-phase two-layer windings of electrical machines of alternating current and can be used in the electrical industry. 5

There is a known method of stacking two-layer AC windings, in which the left (right) active sides in ^^ x coil groups are laid in the lower part of the grooves, and the right (less than 10) active sides of the coil groups in the upper part of the grooves [D].

The disadvantage of this method is that part of the coils cannot be laid in the grooves on both sides at the same time, which complicates the process of laying them and excludes the possibility of mecha-, nizacin.

There is also a known method of laying three-phase two-layer concentric windings, according to which parts of the coil groups are simultaneously placed by both sides in the grooves of the stator [2].

However, this method is inefficient and complicates the process of laying two-layer two-phase windings, since there is no complete electrical magnetic and thermal phase symmetry.

The purpose of the invention is to increase productivity and simplify laying technology due to the symmetry of the laid phases.

This goal is achieved by the fact that according to the method of stacking a two-phase two-layer winding with an even number of concentric coil groups in each phase by partially filling the groove with the active sides of the coils located in the upper and lower parts of the groove, the first phase coil groups with odd serial numbers are placed in the lower parts of the grooves, then stack all the coil groups of the 2nd phase so that one half of the active sides of each group occupies the upper parts of the grooves, and the other half - the lower parts of the grooves, after which imposes coil group 1st phase with even ordinal numbers in the remaining upper parts of grooves.

In Fig. 1 (a, 8, 6, 2), an end circuit of the winding lining is shown; Fig. 2 is a diagram of a coil group.

Coil groups are marked with two-digit numbers, the first digit of the number corresponding to the phase number, and the second to the serial number of the coil group within this phase. A two-digit number without a stroke indicates a conditionally positive direction of the current in the active sides of the coil group, the presence of a stroke with a number indicates the opposite direction of the current.

The coils are shown in the form of rectangles of different heights, and the height of the active sides of each of the coils is proportional to the number of turns.

The method is carried out on the example of laying a two-phase two-layer sinus winding with the number of poles 2p — 4, performed in 24 grooves.

First, the odd coil groups of the 1st phase are laid simultaneously on both sides of the bottom of the groove (Fig. 1 S), then insulating strips are installed in the grooves filled with the active coil sides and all the coil groups of the 2-1 phase are laid (Fig. 1 6). Moreover, in the upper parts of the grooves are laid the left active sides of the reel groups with odd serial numbers, and in the lower parts of the grooves are the left active sides of the reel groups with even serial numbers. Then install insulating gaskets in the remaining part of the grooves and stack the coil groups of the 1st phase with even serial numbers (Fig. 12).

The effectiveness of the proposed method j consists in increasing productivity and simplifying 'laying technology.

Figure 1

VNIIIPI Order 7944/58

Circulation 687

Subscription

Branch of PGSh Patent, Uzhhorod, st. Project, 4

Claims (1)

METHOD OF LAYING TWO-PHASE. • TWO-LAYER WINDING with an even number of 'concentric coil groups in each phase by partially filling the groove with active coil sides located in the upper and lower parts of the groove, which differs in that, in order to increase productivity and simplify laying technology due to the symmetry of the stacked phases, the first-phase coil groups with odd serial numbers are placed in the lower parts of the grooves, then all the second-phase coil groups are laid so that one half of the active sides of each group occupies the upper parts slots, and the other half - the lower part of the slots, whereupon the coil stack body nN phase 1 with even ordinal numbers in the remaining upper parts of grooves. Η ι whim plz \ i7 \ f8 \ m2f \ 22im 11 ^L '21 fifteen 22 ^ -122 '13 ^L 2Jj- -L / ^J l η " h g -I] 22 to 1 2j ' _r | F ““ J] ΐ- S and 1048550>