SU1674325A1 - Synchronous electric machine having end-type rotor - Google Patents

Abstract

The invention relates to electric machines and can be used as a high-speed actuator. The aim of the invention is to improve the energy performance. The rotor 11 of the machine is made in the form of a non-magnetic disk with windows placed on the periphery, the kluvochnye cores 5, 6 of the stator 4 are made in the form of twisted ribbon magnetic cores with a charge in the direction of the magnetic flux. 4 il.

Description

The invention relates to electric machines and can be used as a high-speed executive motor in automation systems, a power contactless motor, as well as a high-frequency voltage generator.

The aim of the invention is to improve the energy performance, reduce the size and weight.

FIG. 1 shows a machine, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 is a section BB in FIG. one.

Synchronous machine (Fig. 1) contains a cylindrical body 1 with two flange covers 2 and 3, a stator 4, klyuvoobraznyh twisted ribbon cores 5, 6, placed between the said cores 5, -6 coils 7 and 8. In covers 2 and 3 of housing 1 on bearings 9 and Yu., shaft 11c is installed with a face-shaped disk rotor 12, on the periphery of which there are segment windows with magnets 13 (Fig. 2). The rotor 12 is made, for example, of aluminum. The ends of the cores 5 and 6 facing the rotor 12,

made in the form of a trapezoid and arranged in steps equal to pole division (Fig. 3). The side bevelled edges of the backs of the cores 5 and 6, facing the covers 2 and 3, are tightly pressed against one another and form closed magnetic circuits. Moreover, the cores 5 and 6 are glued together by ferromagnetic paste. The magnets 13 of the rotor 12 are magnetized in the axial direction and form a opposite-pole system (Fig. 2).

The operation of the machine is carried out as follows.

When the machine is in engine mode, the supply voltage is applied to the coils 7 and 8 in the form of two sinusoidal or stepped voltages shifted in phase by 90 el. Degrees. As a result, a circular rotating magnetic field is formed in the working gaps between the stator 4 and the rotor 12, dragging the magnets 13 of the rotor 12 and transmitting in turn the torque to the shaft 11.

When the machine is running, the generator rotates the input shaft 11, which transmits motion to the magnets 13. Moreover, due to the alternation of vj

N CO

go ate

On the poles of the magnets 13 of the rotor 12, a variable magnetic flux is generated in the cores 5 and 6 of the magnetic core, which induces a variable EMF in the coils 7, 8.

The electric machine according to the invention, in comparison with the prototype, has a smaller mass and volume of the magnetic circuit due to the use here of twisted ribbon cores made of a material with oriented texture.

Claims (1)

Claims of the synchronous machine with a face rotor, containing a disk rotor with permanent magnets arranged peripherally on the side surfaces, forming a different-pole system, and a stator with pronounced poles, two ring windings and two magnetic systems with beams of cores shifted relative to circumference by half pole division, characterized in that, in order to improve the energy performance of the machine, to reduce the size and mass, the rotor is located between the magnetic systems of the stator and is made in the form of a non-magnetic disk with placed on the rifle segment windows in which permanent magnets are rigidly fixed, axially magnetized, and the beak-shaped stator cores are made in the form of twisted tape magnetic conductors, the central winding plane of which coincides with the axis of rotation of the rotor the sides of the cores facing the rotor are trapezoidal, and the backs are made with side beveled edges, tightly pressed to each other, glued together with a ferromagnetic paste and form closed stator magnetic cores. 13 P fig Z FIG. five Bb fi ff