RU2614043C1 - Salient-pole rotor of electric machine - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: invention relates to electric machines, particularly to salient-pole electric machines, in particular to designs for attachment of windings on the electric machine rotor. Salient-pole rotor of electric machine comprises shaft, core, made as a whole, consisting of rotor yoke and poles with pole tips, coil, arranged in rectangular loop around the poles. Each coil is equipped with bandage of rectangular shape, made in the form of layers from non-magnetic synthetic material and fitted with interference along the entire outer surface of the coil.

EFFECT: technical result – increased reliability of electric machine, increased service life of rotor, higher efficiency of the rotor.

1 cl, 1 dwg

Description

The invention relates to electric machines, namely, explicitly polar electric machines, and can be used in the design of electric machines for various purposes.

The prior art designs of rotors of explicit pole machines, for example, a rotor disclosed in a method of manufacturing a rotor of a pole-electric machine according to published application RU 2005104219 "Method of manufacturing a rotor of a pole-pole electric machine", publ. 07/27/2006, the core of which is performed as a single unit, consisting of the yoke of the rotor and the cores of the poles with pole tips. The rotor coils are made of long material and placed at the poles of the cores. So that the coils are not destroyed by centrifugal forces arising during the operation of the rotor, the coils, after placing them at the poles, are crimped. This design does not provide sufficient reliability and efficiency of the electric machine when the rotor is operating at high speeds.

Closest to the proposed technical solution is the design of the prefabricated rotor of an explicit pole electric machine with coils: Pospelov L.I. Designs of aircraft electrical machines. Ed. A.F. Fedoseeva. - M.: Energoizdat, 1982, p. 112, Fig. 5.3, p. 117, fig. 5.9, which contains a shaft, a magnetic system in the form of poles and yokes, damping windings, coils through which current flows to create a magnetic flux, and angular spacers that secure the coils. The specified design of the rotor with coils provides high energy characteristics of electrical machines and has sufficient reliability at low speeds. However, to work at higher speeds in most rotor designs, it is necessary to use fasteners made of non-magnetic, usually material, protecting the rotor coils from destruction by centrifugal forces during rotation. The use of such fasteners due to the complexity of the design reduces the reliability of the electric machine.

The technical result of the invention is to increase the efficiency of use of the rotor by using it at high speeds, increasing the reliability of the electric machine.

The technical result is achieved by creating a rotor explicitly polar electric machine containing a shaft, a core made as a whole, consisting of the yoke of the rotor and poles with pole tips, coils placed in a rectangular contour around the poles, with each coil equipped with a rectangular bandage made in in the form of layers of non-magnetic synthetic material and placed with an interference fit over the entire outer surface of the coil.

In FIG. 1, illustrating the invention, presents a section of the rotor explicit pole electric machine, where:

1 - shaft;

2 - the yoke of the rotor as part of a single core of the rotor;

3 - coil;

4 - bandage;

5 - pole as part of a single rotor core;

6 - pole tip as part of a single rotor core.

The rotor of a shear-pole electric machine comprises a shaft (1), a yoke of the rotor (2), a coil (3), a bandage (4), a pole (5), and a pole piece (6). The rotor yoke (2), the pole (5) and the pole piece (6) are made as a single unit and form the core of the rotor. The magnetic system can be made both massive and burnt.

Coils (3) are wound around the poles (5) along a rectangular contour corresponding to the profile of the pole. A non-magnetic synthetic material is wound onto each core coil (3) of the core with an interference fit in several layers, which acts as a bandage (4) of the coil (5). The bandage (4) accordingly follows the shape of the coil and has a rectangular shape.

During operation of the rotor of a clearly polar electric machine due to the use of non-magnetic synthetic material wound with a tight fit as a bandage (4), due to the absence of fasteners that create additional loads in the form of centrifugal forces, a high mechanical strength of such a rotor is achieved, which makes it possible to further increasing the frequency of its rotation with the constant size of the electric machine.

The use of a rotor of a shear-pole electric machine with a bandage as tightly packed as possible over the entire surface of the coil (5) can significantly increase the rotational speed of the rotor, since the bandage fixes and holds the coil (5) from movement under the action of centrifugal forces, and also allows to extend the service life of the coils (5).

Thus, the claimed technical solution can significantly increase the efficiency of use of the rotor, increase the reliability of the entire electric machine.

Claims (1)

The rotor of a pole-polar electric machine, comprising a shaft, a core made as a whole, consisting of the yoke of the rotor and poles with pole tips, coils placed in a rectangular contour around the poles, characterized in that each coil is equipped with a rectangular bandage made in the form of layers of non-magnetic synthetic material and placed tight on the entire outer surface of the coil.

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