RU1820456C - Synchronous reaction motor - Google Patents

Abstract

Usage: in an alternating current electric drive with synchronous jet engines. SUMMARY OF THE INVENTION: cuts in the form of a triangular prism symmetrically with respect to the axis of the roll, which is perpendicular to the axis of rotation of the rotor, are made in steel coils within the active length, two edges of the rectangular prism face are parallel to the direction of winding of the tape in the coil and are closer to the axis of rotation rotor, and the third rib is located further from the same axis, opposite and perpendicular to these two ribs. 3 ill.

Description

The invention relates to electric machines, namely, synchronous reactive electric motors (SRS), and can be used in AC electric drives.

An object of the invention is to increase the electromagnetic moment of a synchronous jet engine.

In FIG. 1 shows the proposed synchronous jet electric motor (longitudinal section); in FIG. 2 - a roll of tape electrical steel with cuts in the form of a rectangular prism, forming a pair of adjacent halves of the adjacent poles of the rotor and connecting them to the RMO; Fig. 3 - flow distribution in the active zone of the roll with cutouts.

A synchronous jet engine consists of a stator 1 with an m-phase winding 2 of an out-of-pole rotor 3. Each pair of adjacent poloniums of the adjacent rotor poles and the connecting rmo are made of one roll 4 of electrical tape

steel, and the turns of the coil are magnetically isolated from each other. In rolls within

 active lengths, cuts are made in the form of a triangular prism symmetrically relative to the axis of the roll, with two edges of the rectangular face of the prism parallel to the direction of winding of the roll and closer to the axis of rotation of the rotor than the third edge of the prism, which is opposite and perpendicular

 the specified two ribs.

Works SRD proposed design as follows.

Multiphase winding 2 of the stator 1 creates a magnetic field running at a synchronous speed in the gap of the machine. Due to the magnetic asymmetry of the rotor 4 (the conductivities Gd and Gq are not equal along the longitudinal and transverse axes), an electromagnetic moment arises leading to rotation. The longitudinal magnetic flux Fi, penetrating the rotor, enters the axial sections of the rolls located within the asset

e

00

u o eat

(X

of the length of the machine, it is divided into two halves (Fig. 3) and is closed through tangential sections. The flux Φ in the axial part of the roll increases linearly from the middle of the axial sections, reaching a maximum value in the tangential sections of the rolls.

It follows that the implementation of rolls with cuts in the form of a triangular prism within the active length, i.e. with a height relative to the end face of the roll facing the working gap, increasing in the direction from the middle of the axial sections of the roll to tangential, proportionally to the NMR measurement of the longitudinal magnetic flux Фа (i.e., according to the linear law) it ensures uniform magnetic loading of active rotor materials. The implementation of coils forming the pole system with cutouts within the active length of practically e leads to a decrease in the magnetic conductivity along the longitudinal axis Gd, i.e. the magnitude of the magnetic flux Fa and flux link tyd no of the longitudinal axis is maintained at the level of the prototype. But at the same time, the conductivity along the transverse axis Gq is significantly reduced (in the region of the sections of rolls with cuts), and, consequently, the magnetic flux Φc and, accordingly, the flux linkage tfa along the transverse axis decrease.

As is known, the magnitude of the electromagnetic moment of a synchronous jet engine is determined by the relation

M VMd A decrease in the transverse flow and, as a consequence, the transverse flux linkage $ ,, leads to an increase in the electromagnetic moment of the engine.

Thus, the proposed synchronous jet motor has, in comparison with the prototype, a larger magnitude of the electromagnetic moment.

Claims (1)

The claims A synchronous jet motor containing a stator with an m-phase winding and an out-of-pole rotor including a non-magnetic sleeve, on which are placed 5 elements of the magnetic circuit, made in the form of rolls of magnetically insulated turns of tape with a magnet of soft material, the axes of which are oriented radially, and tangentially oriented sections 0 rolls are placed outside the stator package, with the exception of the fact that, in order to increase the electromagnetic moment of the motor, in rolls of tape electrical steel within the active 5 lengths, cuts are made in the form of a triangular prism, located symmetrically relative to the axis of the roll, perpendicular to the axis of rotation of the rotor, with two edges of the rectangular face of the prism 0 are parallel to the direction of winding in the roll and are closer to the axis of rotation of the rotor than the third rib of the prism, which is opposite and perpendicular to these two ribs. 5 9u & 2.