SU879709A1

SU879709A1 - Synchronous electric machine

Info

Publication number: SU879709A1
Application number: SU762401304A
Authority: SU
Inventors: Александр Антонович Дукштау; Григорий Борисович Пинский; Павел Михайлович Ипатов
Original assignee: Предприятие П/Я А-7676
Priority date: 1976-09-13
Filing date: 1976-09-13
Publication date: 1981-11-07

Description

1one

Изобретение относитс к электеомашиностроению , преимущественно к производству крупных электрических машин , например гццрогенераторов.The invention relates to electrical engineering, primarily to the manufacture of large electric machines, such as Hz generators.

Известна синхронна электрическа машина, содержаша статор с обмоткоЯ и ротор с вноаыраженными полисами, включающий шихтованный обо с равномерно оаспрелеленными пазами дл креплени хвостовиков полюсов, -закреп л кнцих а пазах обода полюса iA known synchronous electric machine, containing a stator with a winding and a rotor with replicated policies, comprising a laminated obo with uniformly distributed slots for fastening the shanks of the poles, is fixed in slots of the rim of the pole i

Недостатком такой конструкции вл етс низкое качество генеоируелюго напр жени в обмотке статора за счет зубцовых гармонических составл ющих.The disadvantage of this design is the low quality of the generative voltage in the stator winding due to the jagged harmonic components.

Также известна синхронна электрическа машина, например гидрогенератор , содержгида статор с обмоткой и ротор с вновыоаженными полюсами, включающий шихтованный обод с пазами дл креплени хвостовиков полюсов 21Also known is a synchronous electric machine, for example, a hydrogenerator, a stator containing a winding and a rotor with new poles, including a laminated rim with grooves for fastening the shanks of the poles 21

данна конструкци недостаточно эффективно решает задачу улучшени форки генерируемого в обмотке статора напр жени и имеет весьма сложную технологию изготовлени .This structure does not efficiently solve the problem of improving the forks of the voltage generated in the stator winding and has a very complicated manufacturing technology.

Целью изобретени вл етс улучшение формы генерируемого в обмотке статора напр жени за счет снижени The aim of the invention is to improve the shape of the voltage generated in the stator winding by reducing

эубцовых гармоник и упрощени технологии изготовлени .harmonic and simplified manufacturing technology.

Цель достигаетс тем, что полюсаThe goal is achieved by the fact that the poles

с ротора разделены на группы с одинаковым и более двух числом полюсов и угол о1 между полюсных башмаков соседних полюсов внутри каждой группы выполнен посто нным и отличен отfrom the rotor are divided into groups with the same and more than two number of poles and the angle o1 between the pole shoes of the adjacent poles within each group is made constant and different from

п угла в ме щу ос ми полюсных башмайов - крайних полюсов соседних групп, причем Указанные углы равны:n is the angle between the pole bashmayov - extreme poles of neighboring groups, and the angles indicated are equal to:

dL-1t(l±|);p-tr().dL-1t (l ± |); p-tr ().

15 где 17 - полюсное деление15 where 17 is pole division

t - шаг по пазам на расточке статора;t - step along the grooves on the stator bore;

п - число полюсов в одной группе. Полюсные башмаки полюсов ротора 20 могут быть выполнены с тангенциальным смещением относительно сердечника полюса .. n is the number of poles in one group. Pole shoes rotor poles 20 can be made with a tangential displacement relative to the core of the pole ..

полюса ротора могут быть выполнены с тангенциальным смещением хвостовика относительно сердечника полюса.rotor poles can be made with a tangential displacement of the shank relative to the core of the pole.

На Фиг. 1 изображен ротор синхронной машины; на фиг. 2 - полюса ротора со смещением хвостовика.FIG. 1 shows a rotor of a synchronous machine; in fig. 2 - the poles of the rotor with the offset of the shank.

Claims

The electric maiina contains a rotor, which consists of a shaft 1 and a gesture KCf of a frame 2 fixed on it, on which the rim 3 is rigidly fixed, assembled from segments 4 of steel sheet fastened into a package with straps 5 arranged in 4 holes 6 made in segments. and fastened with nuts 7. In segments 4, cuts are also formed, forming 3 grooves 8 in the assembled rim, for example} 1-meter T-section, into which .. Fixing the shanks of the 9 core 10 poles with the shoes 11, distributed in a certain way around the circumference the rim . The poles are made with the mixing of the axes of the cores .10 relatively, the axes of the shoes 11 and (or) the shanks of the mount 9 and are divided into several groups, at least two groups with the same and more than two number of poles in each. The poles are distributed in such a way that the angle ot- between the axes of the pole shoes inside the group has one magnitude, and the angle P between the axes of the shoes of the extreme poles are different groups located adjacent to each other. The angle E may be smaller or larger than the angle, and these angles are determined from the indicated ratios. It is possible to set the poles in one group, but with ANGLE 3 at least at any two adjacent poles, which differ in verlicin from angle d. between the center of the shoes in the remaining adjacent pairs of poles. Two types of construction are possible to obtain a 1-axle shoe 11 relative to the axes of the cores 10 or the pole mounting shafts. . The axes of the shoes 11 can be shifted in the tangential direction relative to the axes of the cores 10, and the axes of the shanks of the fastener 9 are symmetrical with respect to the axes of the cores (Fig. 1). In this case, the poles in each group are mounted on the rim 3 with the shifting of the shoes. Different positions of the poles have a consistent decrease or increase in the displacement of the shoes and make up HALF of the group of poles. Another half of the group of poles is set oppositely, i.e. is a blinker. mapping first. When the number of poles in the group is odd, the middle pole has a symmetrical position of the shoe relative to the core. FIG. 2 shows the poles in which the axes of the shanks of the mount 9 are displaced in the tangential direction relative to the axes of the cores 10 AND of the shoes 11, which are made in this case symmetrical with respect to each other. In each group, the poles are installed with the direction of mixing of the tailors in the same way as the shoes are shifted to the pole in FIG. 1. The number of poles in a group in the case of an integer number of slots per pole and the stator phase will be determined by the number of poles in the machine. If the need arises to spread the poles when the number of slots per pole and stator phase is fractional, the number of poles in the group will also be determined by the number of poles, in which the full redistribution of the stator winding phase groups is performed. To limit the number of stamps of different positions, the number of poles in the group should be even, then each half of the group will be formed from the same ones. poles, but with the opposite arrangement. The design described allows reducing the number of stator slots per pole and phase in hydrogenerators with a laminated rotor rim while maintaining the high quality of the sinusoidal shape of the CURVE voltage. The economic effect of the invention is determined by reducing the labor capacity of manufacturing the number of stator winding rods due to the smaller number of slots in the stator core (1.5-2.0 times) minus the cost of additional dies for cutting the sheets of the cores of the poles. Claim 1. Synchronous electric machine, such as a hydrogenerator, containing a stator with a winding and a rotor with newly expressed poles, including a laminated rim with grooves for mounting the pole shanks, in order to improve the FORM of the voltage generated in the stator winding reducing the harmonics and simplifying the manufacturing technology, the rotor poles are divided into groups with the same and more than two number of poles and the angle t between the axles of the pole shoes of the adjacent poles within each group is performed n constant and E is different from the angle between the axes of the pole shoes extreme poles of adjacent groups, wherein said angles are equal to: (1t |); p, 1U (),; where TG - pole division; t - step along the grooves on the bore. stator; n is the number of poles in one group. 2. The machine according to claim 1, in connection with the fact that the pole shoes of the rotor poles are made with a tangential displacement relative to the cores of the pole. 3. The machine according to claim 1, so that the rotor poles are made with a tangential displacement of the shank relative to the core and the pole. Information sources. taken into account in the examination of j 1.Alekseev A.E. The design of electrical mass. M. - L. Gosenergoizdat, 1958, p. 177-178.

2. Videman, E., Kellenberger, V., Electric Machine Design. M., Energie, 1972, p. 258, fig. 9/3.