SU917262A1 - Electric machine slotless stator - Google Patents

Description

(54) ELECTRIC SAFETY STATOR The invention relates to electrical KIM machines and can be advantageously used in direct current machines, in synchronous, asynchronous and other electric machines of any use. The known unspotted stator of an electric machine, containing packages made up of grooves consisting of isopyrvadic and interconnected elements, has a tip active forehead of 1st part 1. In this baseless stator, the groups of the package have a different shape and differ from each other in size, which makes them manufactured. In addition, having cuts in which the frontal parts are placed reduces the overall reliability of the stator, the resistance of the winding phases is different, which degrades the characteristics of the machine. The purpose of the invention is to improve the energy performance of the machine.

Claims (2)

MACHINES This goal is achieved by the fact that in a baseless stator of an electric machine, containing a rome and an active part made of a series of packages, each of which consists of groups with different lengths of frontal parts according to the number of machine phases, made of separate isolated from each other and connected between the elements of a bimetal consisting of electrically conductive and magnetic conductive material, the number of turns in groups is determined from the ratios :. sj5 / i - | i. NS /: z OK-1: Wz. € a: Each subsequent packet consists of groups of large length j, medium Eg, and small length —c, and each previous packet consists of groups of small length t, medium Cg, and long length, where is E,, E. L5 is the length of the corresponding package groups, W, 2. 3 turns of these groups. In FIG. 1 shows a spaseless cylindrical stator; in FIG. 2 - the same, longitudinal section; in fig. 3 - strip with stamped notches for one group; in fig. 4 — a group of folded strip (quarter) in FIG. 5 - the same, after bending along the long axis, in FIG. 6 is the same side view; FIG. 7 - the same, top view; in fig. 8 group of folded strip after bending along the longitudinal axis (pta), in FIG. 9 - a group of folded stripes. after bending along the longitudinal axis (the pole in Fig. 10 is an assembled package of three groups, in Fig. 11 - the same, side view; in Fig. 12 - the same, top view, in Fig. 1) groups; Fig. 14 shows packet diagrams with three groups made of two identical parts, and Fig. 15 is a circuit for connecting two packages for equalizing the resistance of the EMF of the phases. The stator has a frame 1 (cast or welded) with Bm 2 made of electrical steel rings with insulation between the layers, and a distributed active layer 3 consisting of Nitroelectric active sides of coil groups 4-9, having the same shape, with an equivalent number of turns, made independently of rome. There is a 1O magnetic circuit, which is technological, between reel 2 and coil groups made of two halves. so that the next packet consists of groups of large, medium and small length (each previous one consists of small, medium and large (Ej, -tj, - Magnetic circuit and PMO are separated from the coil groups of the insulation layer 11. Each group with It consists of two active sides, for example, 4 (FIG. one). The active parties in the group consist of elements 12 (Fig. 1-4). The elements of the two active sides of the group are interconnected by frontal connections 13 (Figs. 3-5), representing one whole with element 12. The groups are made as one whole with an izod of all active elements and frontal connections. Depending on the design of the winding (three-phase, single-phase, constant-current winding, etc.) and the received connection scheme, the coil-type ground coils are connected to each other. The package combines several groups. In our case, for three-phase winding, three groups 4-6 form one 24 pack, and groups 7-9 - the second pack (Fig. 1). Groups are selected from isolated and interconnected elements made of a material that is magnetic conductive and electrically conductive, such as bimetal. In this case, the ratio of electrically conductive and magnetic material may be in the range of 0-100%. The widths of the frontal portions 14, 15, etc., are different in order not to resort to bending in the frontal portions. In the strip (Fig. 3), a cutout 16 is stamped on one side, then a cutout 17 on the other side, and so on. The blank for the group can also be obtained directly on the compound press on which the entire blank of FIG. 3. After stamping, the strips are insulated and folded along the dotted lines 18 and 19, forming a coil group (Fig. 4) with two active sides 20 and 21. To align all the active sides, the resulting group and bend along the line. 22-23, and the coil group is obtained as shown in FIG. 5. After the group is stretched, it takes the form shown in FIG. 6. The molding of the group and its processing can be performed on a special template facilitating the manufacturing process. The distance 24 (Fig. 6) is 2 / 3T pole division, the distance 25 is pole division. Size 26 is the width of the frontal part, and size 27 is the length of the frontal part (Fig. 7). Group 5 is made similar to group 4, but there is a difference in. stamping. Cuts are punched into the strip in the same manner as in FIG. 3, but the departures of the frontal parts 28 and 29 (FIG. 8) are longer than that of group 4 by the length of its frontal part. The frontal parts of different groups have different lengths. The width of the frontal sections of the respective elements is the same. Thus, the first section 14 for the fourth, fifth; sixth groups: the same. All groups are identical in form. The length of frontal connections of 30 and 31 of the sixth group is longer than that of group 5 by one more frontal part (Fig. 9). From the comparison of FIG. 11 vi 1.2 it can be seen that the bag (Fig. 10) is formed by adding groups 6, 5 and 4. The opening of the sixth group includes half of the fifth group, the hole of the fifth group includes half of the fourth group (Fig. 11 And 12) . Assembled and insulated interfacial groups are easily assembled into a bag, since there is a distance of 2/3 T between their walls (Fig. 6, size 24). The group is assembled from a profile or rectangular material (Fig. 6 and 11). The manufactured bag is insulated, compounded to form one monolithic whole. The manufactured packages are assembled on a template, crimped, and insulation 11 is applied to the active area and frontal joints. Then the packages are coated. Magnetic conductors, which can be made of powder magnetic material. The assembled monolithic active part of the stator is interrupted in the frame 1 and sealed by rings 32 and 33 with pressure discs of the front parts 34 and 35 (Fig. 2). From the circuit diagram in the package for groups 4, 5 and 6 (FIG. 13), as well as from FIG. 6 and 11, it is clear that the width of the group is 4/3 pole division. In order to shorten the lengths of the frontal parts, each group is offered to be made of two identical parts (Fig. 14) These parts can be connected in series or in parallel. The outputs from each rpyniai are the same as for conventional machines, the proposed design does not DIFFER. and the EMF is proposed to be produced in two ways. In the first method, the number of turns of rpyit 5 is taken as the basis, and the number of turns of group 4 increases in proportion to the length of the groups. As for group 6, the number of turns in it decreases in proportion to the ratio of the lengths of the sixth group and fifth. That is, the number of turns of the groups is: Wf W |, where Wj, X / ,, W ,, is the number of turns of the fourth, fifth and sixth groups b of the length of the groups. Thus, the coils of different groups are equivalent in resistance and emf.This method is most applicable to bipolar machines.The second method suggests the first three groups to perform as described in Fig. 13. The following grindings in order to compensate for the inequality of resistances and EMF, i.e. a large group is fulfilled, The medium group (remains unchanged) and the baby itself. This embodiment is shown in FIG. 15 and it ensures the equivalence of all phases. The groups in FIG. 15 may be made of two identical parts, as indicated in FIG. 14. The proposed stator works in the same way as izestny. It creates a magnetic field that interacts with the rotor and forms a torque (for an engine). An emf is generated in the stator if the stator is used as a generator. Unlike the known stators, the frontal parts of the packets are active, the magnetic flux passes through them, and EMF is created in them. In the proposed stator, in comparison with the known, manufacturing of groups and stator packages is simplified, since all groups have the same shape, cut the width of the frontal joints, resolved the issue of aligning the phase resistances to the EMF by applying an equivalent number of turns, and . Thus, the invention of the CEESA does not improve the energy characteristics of the machine and reduce the labor intensity of manufacturing. The formula of the invention: 1. A single-stator electric machine, containing a rome and an active part, made of: a series of packages, each of which consists of groups with different lengths of head-on parts (JH3 machines, made of separate isolated from each other and interconnected elements of bimetal, consisting of electrically conductive and magnetic conductive material, characterized in that, in order to improve energy performance, the number of turns in groups is determined from the ratios: -22. Wi vca 2. The stator according to claim 1, characterized in that each successive packet consists of groups of large length 1, medium t and small, and each previous packet is from groups of short length t, medium, 2 and long length -ti ,. t, Alina relevant groups of the package; w ,,. y, the number of turns of these groups. Information sources. Taken into account during the examination 1. USSR Copyright Certificate No. 824372, cl. H 02 K 3/04, 1978. four 12 at 1 . ,P Fy 21 12 / A Fig 5 A /  Phage 7 y g (Y " five . .four 1 I 1 I I I FIG Yu FIG. / J 5 6 it 5 6 IS 918 S Fig.Sh