SU1336156A2 - Electric machine magnetic core - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to improve the energy performance. The magni-conductor of the electric machine contains a twisted rmo and a lamellar dentate zone. Each tooth consists of middle 9 and extreme 10 and 11 plates. At least one of the extreme plates 10 is made in the form of a channel. Channel shelves can be either the same width hi, or different (). The invention makes it possible to increase the filling ratio of a tooth with steel. 2 3. p. F-ly, 5 ill. 10 (L 11 00 with O5 sd O5 Figure 1 GO

Description

The invention relates to electrical engineering, in particular to electrical machines with a low-waste magnetic circuit containing a twisted yoke and a lamellar dentate zone, and is an improvement of the device according to the author. St. No. 1022260.

The purpose of the invention is to improve the energy performance.

FIG. 1 shows a part of the proposed magnetic circuit of the machine; FIG. 2 -

windings and the minimum value of the slot flux magnetic flux.

Each tooth can have either two extreme plates 10 in the form of a channel (FIG. 2), or one of them in the form of a channel (plate 10), and the other in a known technical solution (plate 11, FIG. 3). At the same time, the energy indicators are somewhat better than by the known technical solution, but worse.

tine in the form of a channel with various width of shelves; in fig. 4 - magnetic circuit tooth, having two extreme teeth of the tooth in the form of a channel, with the height of the shelves being variable along its width; in fig. 5 - Extremely plate teeth, made in the form of a channel with different widths and heights of the shelves. The magnetic circuit of the electric machine (Fig.) Contains the rotor 1 stator, the teeth 2 of the stator, the rome 3 rotor, the teeth 4 of the rotor. The teeth of the magnetic circuit to the coupling and between them are fastened with connecting rings 5

15

20

the area of the tooth zone, each tooth has 10, rather than in FIG. 2

two extreme plates made by for-channel are produced from electrical

me channel; in fig. 3 - the same, each steel or another ferromagnetic mite tooth has one extreme plastic area by rolling. The thickness

channel from different basis of channel Ac differs from thickness of fig. 4 - teeth of steel of medium sheets,

although there may be times when A

 ASO,

When rolling, it is necessary to strive for the minimum value of the radii r (Fig. 5), and after machining there should be no local increases in air gaps above the channel bars from both technological gaps. Therefore, when rolling channels it is necessary to take into account the allowance for the height of the shelves for machining.

(fastening of the rotor teeth to the pole is not shown- 25 The magnetic core is assembled). Between the teeth are grooved in a well-known way with the only difference

6 and 7 respectively for the stator and the rotor, the position 8 denotes the hole for the shaft. Each tooth consists of middle 9 and extreme 10 (Fig. 2) and 11 (Fig. 3) plates rigidly interconnected by rivets 12. At least one of the extreme plates 10 is made in the form of a channel. Channel shelves can be either the same width h | (Fig. 3 and 4), or different (Fig. 1, 3 and 5). Different shelf widths are needed for ease of installation of the teeth on the rmo of the magnetic circuit. So, if the teeth come close to each other (Fig. 1 for the rotor), then there is no need for a device to accurately position the teeth on the frame.

Shelf thickness t | and t2 can be either constant (ti const; t2 const) along its width (Fig. 1-3), or variable (ti var; (2 var, Fig. 4 and 5).

Variable shelf thickness t | and (z is selected from the condition of obtaining a minimum of 45 teeth assembly, the channels of the channel of the value of the coefficient of air are various widths.

clearance. The width of the shelves hi and b selects-3. Magnetic on PP. 1 and 2, in accordance with known production conditions, it is not necessary that the channels of the channel in a suitable slot size under the cross section have a variable height.

35

40

that prior to the manufacture of the teeth, the extreme plates are rolled in the form of a channel bar.

Making the outer teeth in the form of a channel increases the filling ratio of the teeth with steel and thereby improves the energy characteristics of the machine.

Claims (2)

1. Magnetic electric machine according to ed. St. No. 1022260, characterized in that, in order to improve the energy characteristics, at least one of the outer plates of the tooth has the shape of a channel, in which the ve, the angles of the corners between the rack and the shelves are adjacent to the adjacent plates of the tooth. 2. Magnetic circuit according to claim 1, characterized in that, in order to simplify the techno-winding and the minimum magnitude of the magnetic flux of the slot scatter. Each tooth can have either two extreme plates 10 in the form of a channel (FIG. 2), or one of them in the form of a channel (plate 10), and the other in a known technical solution (plate 11, FIG. 3). At the same time, the energy indicators are somewhat better than by the known technical solution, but worse.  rather than FIG. 2 The magnetic core is assembled in a known manner with the only difference The teeth assembly logs, the channels' shelves have different widths. that prior to the manufacture of the teeth, the extreme plates are rolled in the form of a channel bar. Making the outer teeth in the form of a channel increases the filling ratio of the teeth with steel and thereby improves the energy characteristics of the machine. Invention Formula 1. Magnetic electric machine according to ed. St. No. 1022260, characterized in that, in order to improve the energy characteristics, at least one of the outer plates of the tooth has the shape of a channel, in which the ve, the angles of the corners between the rack and the shelves are adjacent to the adjacent plates of the tooth. 2. Magnetic circuit according to claim 1, characterized in that, in order to simplify the techno FIG. g 12 Fig.Z / J FIG. five Fy