SU1372508A1 - Three-phase single-layer pole-switchable winding with 16:4 pole ratio - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is the extension of the functionality of the winding with the ratio of the numbers of pairs of poles 2p,. The winding is made in 54 slots of the stator, consists of 24 coil groups (CG), has 9 terminals, the Y / YYY switching circuit. CG with numbers 58,66,74 and the beginnings of external coils in grooves with numbers 7.25, 43 are formed by two concentric coils with a pitch, 9. The data on the performance of all other KG. The conclusions are made from the beginnings of the first, fourth and seventh branches, from the pairwise joined beginnings of the second and third, fifth and sixth, eighth and nineth branches, from the pairwise united ends of the first and second, fifth and sixth, seventh and eighth branches. 2 pcs. with (L

Description

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The invention relates to pole-switched windings of electric machines of alternating current and can be used in electrical engineering in the manufacture and installation of stator windings of two-speed asynchronous motors.

The purpose of the invention is to enhance the functionality of the winding by performing it from twenty-four coil groups with an external switching star-triple star circuit.

FIG. 1 shows a diagram of the proposed single-layer winding with a pole ratio of 16/4; Fig.2 scheme of the external switching winding.

The winding (Fig. 1) with the ratio of the numbers of poles 16/4 is performed in 54 stator pairs with numbers from 1 to 54, contains twenty-four coil groups with sequence numbers from 55 to 78, of which three are groups with sequence numbers 58 , 66, 74 and the beginnings 25 are rectangular. Groups containing one

external coils in the slots with numbers 7 25, 43 respectively are formed by two concentric coils with a pitch, 9. Three groups with serial numbers 62, 70, 78 and the beginnings of the coils in grooves with numbers 16, 34, 52, respectively, are formed by a coil with a pitch, twelve groups with serial numbers 56, 57, 59, 60, 64, 65, 67 , 68, 72, 73, 75, 76 and the beginning of the coils in the slots with numbers 2, 4, 11, 13, 20, 22, 29, 31, 38, 40, 47, 49, respectively, are formed by a coil with a pitch, six groups since The numbers 55, 61, 63, 69, 71, 77 and the first coils in the slots numbered 1, 15, 19, 33, 37, 51 respectively are formed by a coil in increments, and in the first phase connected to the main terminal A1 are included coil groups since Forward numbers 56, 57, 61, 62, 63, 67, 68, 74, in the second phase, connected to the main clamp B1, are included coil groups with order numbers 58, 64, 65, 69, 70, 71, 75, 76, in the third phase, connected to the main clamp C1, are included coil groups with serial numbers 55, 59, 60, 66, 72, 73, 77, 78, while

coil groups with order numbers 55, 61, 63, 69, 71, 77 are included opposite to the other coil groups within the phases, and

the phases are connected according to the star with a zero point formed by the beginnings 57, 65, and 73 of the coil groups; in addition, the winding has six additional clamps B2, A2, OT, A3, SZ, formed by the connection points of the coil groups 64 and 58, 56 and 74, 7 and 66, 70 and 76, 62 and 68, 78 and 60, respectively, for operation on a larger number of pole pairs, the windings are connected in star with terminals A1, B1, C1, which are the supply terminals on both numbers of pole pairs of free additional terminals, for operation on a smaller number of poles, the following terminals are closed in pairs between themselves y: A2 and B2, A2 and C2, 33 and A1, A3 and C1, N3 and B1, form a triple star diagram.

FIG. Figure 2 shows the external switching circuit of the winding with the mapping of phases Y / YYY. Coil groups consisting of two coils are labeled 5

0 g

0

0

five

coil, depicted by squares. The beginning of the coil groups are indicated by dots.

The winding allows switching from one number of poles to another without breaking the power circuit, which increases the reliability of the circuit and makes it possible to apply it in elevator engines. The winding can be laid in a mechanized way on modern storobotmotochnom equipment by the method of separate stacking.

The magnitude of the winding ratios of the proposed winding is K, 0.82; , 878; K 0.849. The relative magnitude of the differences EMF, 041, which is quite acceptable. The winding has advanced functionality, has nine pins, can be used in the electrical industry in the manufacture and installation of the stator windings of two-speed asynchronous AC motors.

Claims (1)

Invention Formula A three-phase single-layer pole-selectable winding with a ratio of pole numbers of 16/4, containing coils unevenly distributed over the coil groups, combined into nine branches with nine leads, with combined ends of the third, sixth and the ninth branch, characterized in that, in order to extend the functionality, it is made in 54 slots with numbers from 1 to 54, it contains twenty-four coil groups with serial numbers from 55 to 78, of which three are groups with order 58, 66, 74 and the beginnings of external coils in slots 7, 25, 43, respectively, are formed by two concentric coils with a pitch, 9, three groups with sequence numbers 62, 70, 78 and nanomers 1, 15, 19, 33, 37, 51, respectively, are formed by a coil in increments, with the coil groups included in the first branch s 75, -71.64; the second branch includes coil groups -70, -58; the third branch includes coil groups 76, -69, 65; the fourth branch includes coil-jq groups 67, -63, 56; the fifth branch includes the coil groups -62, -74; The sixth branch includes coil groups 68, -61, 57; the seventh branch includes the coil groups 59, -55, chalami coils in the slots with numbers 16, i 72; the eighth branch includes coils 34, 52 respectively formed by a coil in increments, twelve groups with sequence numbers 56, 57, 59, 60, 64, 65, 67, 68, 72, 73, 75, 76 ny groups -78, -66; coil groups 60, -77, 73 are included in the ninth branch, and the conclusions are made from the beginnings of the first, fourth and seventh branches; of and the beginnings of the coils in the grooves with numbers, Q are the pairwise joined beginnings of the second and 2, 4, 11, 13, 20, 22, 29, 31, 38, 40, 47, 49, respectively, formed by a coil in increments, six groups with sequence numbers 55, 61, 63, 69, 71, 77 and beginnings, coils in grooves with 25 the third branch, the pth and sixth branches, the eighth and nineth branches, from each pair of joint ends of the first and second branches, the fifth and sixth branches of the seventh and eighth branches. 2508 numbers 1, 15, 19, 33, 37, 51, respectively, are formed by a coil with a pitch, with the coil groups 75, -71.64 included in the first branch; the second branch includes coil groups -70, -58; the third branch includes coil groups 76, -69, 65; the fourth branch includes coil Q groups 67, -63, 56; the fifth branch includes the coil groups -62, -74; The sixth branch includes coil groups 68, -61, 57; the seventh branch includes the coil groups 59, -55,  72; The eighth branch includes coils 72; The eighth branch includes coils ny groups -78, -66; coil groups 60, -77, 73 are included in the ninth branch, and the conclusions are made from the beginnings of the first, fourth and seventh branches; of the third branches, the nth and sixth branches, the eighth and nineth branches, from the pairwise combined ends of the first and second branches, the fifth and sixth branches, and the seventh and eighth branches.