DE1927680U - PERMANENT MAGNETIC STATOR FOR AN ELECTRIC MACHINE. - Google Patents

Description

RA, 128 265 * 12-3.65

■ -. Ph ill-η s Patentverwalturn- GmbH.

PHD- 492 Γ
Anmt '/ Λ.η ν - .. March 10, 1965

Philips patent administration Somob.Ho, Hamburg 1, Möncke "bergstrasse 7

Permanent magnetic stator for an electrical machine

The! Inflation relates to a -permanent magnetic Stator for an electrical machine, in which magnetized between radially arranged iron wedges in the direction of the wedges Permanent magnets and other radially magnetized permanent magnets provided on the iron wedge feet pointing outwards are, each with the same poles as the interposed ones Permanent magnets are in contact with the biscuit wedges. "

It is a permanent magnetic stator for an electrical machine known in the between radially arranged iron wedges. Permanent magnets are arranged. The rectangular plate-shaped Magnets are magnetized in the direction of the iron wedges. The front parts of the iron wedges protrude into the interior of the stator and thus serve as magnetic poles. In this way, the flux generated by the magnets is concentrated on the interior of the stator. Such machines have a high air gap induction density and performance. It is also known to place individual permanent magnets on the outward-facing iron wedge feet, each of which with the same poles as the interposed permanent magnets te rest on the iron wedges. The individual edge magnets are also enclosed by an iron ring. With this arrangement the iron wedges are used magnetically better than with

PHD-492 - - 2 ~

6 / Be

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548 228 * 10/19/65

the arrangement without edge magnets. The attachment of the individual edge magnets is, however, cumbersome, as it is necessary to connect the magnets individually with the iron wedges.

The disadvantage mentioned is with a permanent magnet! See stator for an electrical machine, in which magnetized between radially arranged iron wedges in the direction of the wedges Permanent magnets and other radically magnetized permanent magnets are provided on the iron wedge feet pointing outwards, which each with the same poles as the permanent magnets inserted between them rest on the iron wedges, avoided that ge. ^ measured the innovation "the radially magnetized permanent magnets of magnetized areas of a ring surrounding the iron wedges are formed from oxide magnetic material.

A permanent magnetic stator built according to the innovation has the advantage over the known stators that the edge magnets are housed in a unitary body which can be placed as a whole on the inner stator part. Besides that the magnetization of such a ring, which can be done in one operation, is much more economical.

In the case of the innovation, the oxide-magnetic ring is preferably divided into two or more ring segments. Such segments are particularly easy to place on the inner stator part.

The innovation is shown on the basis of the drawing Embodiment explained in more detail *

A permanent magnetic stator according to the innovation consists in as is known from a number of wedge-shaped iron pp-r.le 1, which taper towards the center of the stator. The poles> of the poles protrude further into the interior of the stator than permanent magnets 5 inserted between the poles 1

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. P 24 93V213 "GFCM""'" ■ "Hamburg, I8 ^r October 1965 Ku / Pe US Philips Corporation My acts. PHD 492nd

Permanent magnets are alternating in the direction of the iron poles 1 magnetized so that alternating Train north and south poles.

The inner part of the permanent magnetic stator formed from the iron wedges 1 and the permanent magnets 5 is enclosed by an oxide-magnetic ring 7. This ring can, if necessary, as shown in the drawing, be divided into three ring segments 9 * 11, 1J> for easier assembly "Radially magnetized" The direction of magnetization is chosen so that the individual feet 15 in the ring 7 always have the same magnetic polarity as the poles of the magnets 5 attached to them known Eisenrüeksohlulring 17 be shrunk on. ■ "....

The ring 7 is preferably made of hexaferrites of the metals Ba, Sr, Pb and possibly Ca,

Protection claims:

Claims (2)

Protection claims early.:. -. ..-.-- - "..... -..--. 1. Permanent magnetic stator for an electrical machine in which permanent magnets magnetized between radially arranged biscuit wedges in the direction of the wedges and further radially magnetized permanent magnets are provided on the outwardly facing iron wedge feet, each with the _; the same poles as the permanent magnets, similar to the bisected wedges, are in contact, characterized in that the: radially magnetized permanent magnets are composed of magnetized areas of a singing :(?) which surrounds the iron wedges. Oxydmagnetwerkstoff are formed. - \. . V ...,. 2. Permanent magnetic stator according to claim. 1, thereby, ge. indicates .that the ring (-7) consists of two or more ring segments (9> 11 j 13). composed of ⁷ is ». ·, - ■ 3. Permanent magnetic stator according to Claims 1 and 2, characterized in that: the ring (7) "or the ring" segments (9 _} 11, 13} are surrounded by an iron yoke ring (17} in a manner known per se .are. ./ ._- :. ".. 4 · Permanent magnetized stator according to claims 1 to 3, - ". characterized in that the ring (7) is made of Sexaferrii> en the metals Ba, Sr, Pb and optionally öa. . . .