SU1309182A1 - Polyphase two-layer combined winding for 2q/5q pole pairs - Google Patents

Abstract

The invention relates to electrical engineering. The winding consists of 60Kq equal-turn coils (K, q are any integers) uniformly distributed across the grooves of the magnetic circuit. The coils are grouped by branches, which are connected into four three-phase stars, and the like conclusions of these stars form a group of three-phase leads to 2q pairs of poles, and zero points form a group of four-phase leads to 5q pairs of poles. The induction curve of the field created by the power supply from each of the sides approaches the shape of a sinusoidal wavelength, and the winding factors for both poles are at the level of the coefficients of conventional multiphase windings, which allows the design of combined cascade motors and single-machine frequency converters of medium and high power approximating in terms of their weight, size and energy parameters to conventional multiphase machines. 2 ill., 1 tab. About iS (L with about with 00 o

Description

11; i) shaving refers to electrical engineering and can be used in ssccated cascade motors and single-frequency converters.

The purpose of the invention is the extension of the field of application by obtaining the numbers of the polar pole π / p2 2q / 5q with the number of stars and phases m 4, where q 1, 2, 3 ...

FIG. Figures 1 and 2 show the unfolded circuit of a multiphase two-layer bbv interlaced winding.

The winding is made of coils 1-60 with K 1 and (i.e. pi / p2 2/5), in the first branch of the first star (A-D) the coils 31-33 are connected in series according to the first star and the coils 49 and 50, in the second branch of this star (B-D) are included katupshs 43-45 and opposite to coils 26 and 27 and in the third branch (C-D) - KaTyiHKii 21 and 55 and opposite to them - 37-39, the first branch of the second star (А-D) is similarly included coils 1-3 and 19 and 20, the second branch (В-D) - coils 13-15 and 56 and 57 and the third branch (С-D) - catautus 51 and 25 and 7-9, in the first branch of the third star (A – E) are similarly included the category HI ki 34 and 35 and 16-18, in the second The first branch (BC) is the coils 11 and 12 and 28-30 and the third branch (CE) - coils 22-24 and 6 and 40; in the first branch of the fourth star (AE) coils 4 are similarly included and 5 and 46-48, in the second branch (B - E) - Katupichi 41 and 42 and 58-60 and in the third branch {C - E) - coils 52-54 and 36 and 10. In the node with tap A are combined the phase branches of the first, second, third and fourth stars with leads from coils 31, 1, 18 and 48 are likewise combined into the node B with the leads from cat 43, 13, 30 and 60 and into the node C with the branches with leads Kat 21, 51, 40 and 10, and the zero points are formed in the first star (conclusion D) by the branches with the conclusions from the coil 49, 26 and 37 in the second star (conclusion D) - with leads from coils 19, 56 and 7, in the third star (output E) in E waters from the cat-P1ek 35, 12 and 24, and in the fourth star (conclusion E) - with conclusions from coils 5, 42 and 54. At 11dc; 1yuchenii three23

1836 54

, 91 0.909 0.908 0.908 0.908 0.908

Coy, 0.911 0.903 0.901 0.901 0.901 0.9

phase supply to terminals A, B and C (with the conclusions D, D, E, E remain balanced) in the air gap occurs close to a sinusoidal four

the pole is vrashayuidu with magnetic wave, and when powering the terminals D, D, E, E (in this case, the same potential would be conclusions A, B., C) from a four-phase or two-phase source with insulated phase windings - ten-pole rotating

The wave, pictures of magnetizing forces created by the combined winding are shown in FIG. 3, 4. In the case of magnetizing force curves can be obtained by the location (repetition.m)

along the abscissa axis q of the same picture magnetized. forces. The considered winding from the 2q side of the pole is symmetrical, from the 5q side of the EMF pole pairs (generated by the rotating sinusoidal dec - type polarized field induction) in the branches

respectively, the first, second, third stars — the first and second, the third and the fourth — coincide in phase with each other, and the emf vectors of the first and third and third branches in the specified pairs of stars are about 6 ° apart; The second branches of these stars are the same and exceed the emf of the third branch by 3.5%. However, this phase shift in the EMF of parallel branches from the 5q pole pair side with the considered branch connection scheme does not lead to equalizing currents when connecting the second source, and in the branches x respectively, the first and second and third three-phase stars of the EMF vector form perfectly symmetrical system. For windings made with other values of K, the geometric difference EiCKTOpOB EMF of parallel branches is the same as in this winding. The optimal values of luara winding (y) at which the winding coefficients on both sides of the maximum are maximum, and the values of these coefficients for several values of K are shown in the table.

72

90

108

Ko v KU, KR Ku Ku, sin (6 ° -y / K), KP, -0.5 / 5Kx xsin (6 ° / K) Kei Ky.K /. , Kv; .sin (15 ° y / K} Kp, .0,707 / 3Ksin {15 ° / K).

The proposed coiled winding, in contrast to the pair of poles on the 5q side, is two-phase (with isolated phases), so that using this winding in a coBMeuieHHOM single-machine frequency converter allows the frequency range of the generated two-phase voltages to be expanded, for example, to power two-phase motors. The high electromagnetic properties of the proposed winding and the manufacturability of its manufacture (it consists of uniformly spin coils with the same HjaroM uniformly distributed in the grooves) allows designing powerful combined cascade motors and single-machine frequency converters 1iz1, approximating in their weight and size and energy indicators to ordinary MFs. a t and n and m

Claims (1)

Invention Formula Multiphase two-layer coil winding for 2q / 5q pole pairs, for example, for combined cascade motors on one-frequency frequency converters, with phase relation iii / ii, with uniformly lacnpc-divided but bore, equal-turn, 1-pins of the same pitch, crpyniiopiimi tp-phase stars, the same phase branches of which are connected to separate conclusions. form one system corresponding to 2f poles, and the need for che 0 five 0 The points are connected to the terminals forming another system corresponding to the 2p2 winding poles, characterized in that, in order to expand the field of application by obtaining the number of pole pairs with and, the winding contains 60Kq katunek, and in the first branches of the first and second stars the coils are connected in series according to with order numbers N It + 5К (5 + ZA) and in the third branches, but with these skids, but counter to them, coils with numbers N 1-2 + + ZK (16 / 5A) are included in the second branches of these stars consistently - according to the cords with numbers N li + ЗК (14 + 5А) and all three of them are katupti with nome- + oK (o + 3a) and in the third branches of the an. Yugichpo includes Katun1ki with numbers., j.5K () and iscTpeMHo to inn - N li H-ZK (., in the first branches of the third li limpen;;: gee: -; d 1yus, 1 gdovodatelP1) according to the list) 111 with 1Or dkovy | And nomep N;: i2- -3K (16-gpA and heading to pim - ka-i pK (2-f A. Yu Uto1P) 1st branch - coil N ii; -roK {5 - f 3.4 ) and counter to pim - -i, 4 ЗК (14- | -5.Л) and in the third branches - - i + ЗК (12 / 5.А.) and counter to them - N - 5K (4-f З.Л), where q 1,2,3 {any and .10). , 2,3 (, 1 any integer number),. -4g -4qt, 2,3.1 respectively Beiiiio for the branch of the first, second, third and fourth | 1 stars 1 0 at and, if at 60 Kq, li takes all values in the range 1 - FC, 1- takes all values in the 1–2 K range, and r ranges O ----- (c-1). R 0 J / jzjj J  3738: 59W W 2 W 41 B 49 5051 52 55 545556 575d 5960 05 Oj or fe.2