SU1282263A1 - Tooth area of electric machine - Google Patents

Abstract

This invention relates to electric machines. The purpose of the invention is to increase the energy performance. The corrugated tooth zones of the stator 1 and rotor 2 are separated by an air gap 3. On the 4 teeth elements adjacent to the slot-like jumpers 5, longitudinal slots 6 are made. The slots in the ribbon elements can be made either along the entire length of the magnetic circuit or for the most part. This makes it possible to reduce electrical losses in the steel of the dentate zone. 9 il.

Description

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FIG. one

This invention relates to electric machines, namely electric machines having corrugated tooth zones.

The purpose of the invention is to increase the energy performance of the machine (efficiency, power factor) by reducing the magnetizing current, the electrical losses in the steel of the tooth zone from the currents induced in it by the main magnetic flux, as well as reducing the noise and vibrations of the machine during its operation. decreasing the higher spatial harmonics of the sex of the dentate order.

Fig. 1 shows corrugated tooth zones of the stator and rotor, separated by an air gap, with slots in a part of the tape elements forming the slots; Figures 2 and 3 illustrate embodiments of the slits; Figure 4 shows a dentate zone, in which a slot is made at both peaks, a corrugation on the side of the groove; Figures 5 and 6 show embodiments of the slits ;;; l tooth zone having bent corrugations; Figure 7 shows a tooth zone with a slit made along the entire length of the magnetopro 5 water; in fig. 8 and 9 are embodiments of the slits on a part of the length of the magnetic circuit.

The corrugated tooth zones of the stator 1 and the rotor 2 are separated by an air gap 3. On the elements 4 of the teeth, adjacent to the mortise bars 5, longitudinal slots 6 are made (figure 1).

(The slits in the tape elements adjacent to the slot bar can be made either along the entire length of the magnet duct (Fig. 7), or over a larger part of it (Fig. 8 and 9.). In the latter case, the corrugated tooth zone is not divided in mechanically into separate parts, it retains its integrity, however, in this case, the paths of the closure of the flux-scattering fluxes along the magnetic conductive material from which the corrugated chord zone is made remain, resulting in a flux-grooved scattering slightly more than the flux Azov scattering at cuts x made along the entire length. t

The slots on the part of the length of the magnetic circuit can be made in the tooth zone immediately after the corrugation of the tape.

Slotting along the entire length of the magnetic core is possible only after the corrugated tooth zone is fully formed, fixed on a special mandrel, which is able to ensure its integrity both in the treatment of the surfaces of the teeth intended for articulation with the frame, and in the process of

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above the longitudinal slots.

The bridges 7 between the parts of the corrugated tooth zone, partially separated by longitudinal slots, made on the axial length of the tooth zone, can be located either at its ends (Fig. 8) or in the middle (Fig. 9).

Performing jumpers in the middle of the dentate zone contributes to a more significant reduction of the currents induced in the denta zone by the main magnetic flux of the machine, and consequently, the electrical losses in it.

The implementation of these jumpers at the ends of the tooth-groove zone helps to ensure its greater strength. These jumpers can be removed, if necessary, before laying the winding into the slots.

The longitudinal slits 6 can be made either on one of the two tape elements, forming together with the slot slot 5, a notch (Fig. 1-3, Figs. 5-9), or on both tape elements adjacent to the same slot bridge (figure 4).

With a single-layer winding, it is not necessary to make longitudinal slits on both elements of the belt adjacent to each of the mortise bars. The inductive resistance of the winding as a whole can be reduced if the longitudinal slots are made in the tape element adjacent to the slot rail of one of the two slots in which the sides of the same winding section are located. 0

In the semi-closed grooves, a reduction in the inductive dissipation resistance of the groove can be achieved by removing the jumper connecting two 5 bent away adjacent end tooth elements (Fig. 5).

The effectiveness of the invention is to improve the energy performance - power factors

five

ti and beneficial effects, noise reduction and vibration of electric machines with corrugated tooth zones.

Claims (1)

Invention Formula Zubtsov zone of the electric car, srsti shchi from corrugated FIG. 2 FIG L FIG. b 2822634 magnetically conductive tape containing two types of elements, some of which form teeth, and others connect adjacent teeth, forming grooves open 5 in the direction of the frame, in which longitudinal slots are made, in order to increase the energy performance , the slots are made at the vertices of the extreme fO: corrugation from the side of the groove. Fig 3 FIG. five FIG. 7 FIG. 9 fy Fi1.d