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Rotating electrical machines including integrated permanent magnets

A technology of rotating electrical machines and permanent magnets, which is applied to the rotating parts of magnetic circuits, manufacturing motor generators, magnetic circuits, etc., and can solve the problems of reducing the magnetic performance of machines

Inactive Publication Date: 2018-11-16
MOTEURS LEROY SOMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the case of machines with multiple magnets arranged in multiple rows per pole in the magnetic mass, the play of magnets in different rows can add up, thus degrading the magnetic performance of the machine even further

Method used

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  • Rotating electrical machines including integrated permanent magnets
  • Rotating electrical machines including integrated permanent magnets
  • Rotating electrical machines including integrated permanent magnets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] exist figure 1 and figure 2 , the shim is shown in position prior to insertion.

[0072] Figure 1 to Figure 4 Shown is a rotor 1 of a rotating electrical machine having a rotor magnetic mass 2 with flux concentration, in which a first seat 3 is formed to define poles 4 of the rotor, each pole having a radial Axis X. Only half of the pole 4 is shown in the example described. The magnetic mass 2 extends around a central bore 50 receiving a shaft (not shown).

[0073] A permanent magnet 11 is inserted in each of the first seats 3 , the direction of magnetization of said magnets being indicated by arrows. Each permanent magnet 11 has two pole faces 11a, 11b, one magnetized as North (N) and the other as South (S).

[0074] In this example, each pole 4 of the rotor has seven first seats 3 arranged around each pole in three concentric rows 6 , the concavities of said rows being oriented towards the air gap. Two rows 6 have three first seats 3 arranged consecutively in...

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PUM

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Abstract

The invention relates to a rotating electrical machine comprising: - a magnetic mass (2), in particular of a rotor, comprising a first housing (3), - a plurality of permanent magnets ( 11), the plurality of permanent magnets (11) are inserted in the first housing (3), each permanent magnet (11) has two pole faces, and a non-magnetic gasket (20), the gasket (20) inserted into the first housing (3) and / or the second housing (13) formed in the magnetic mass (2), the gasket (20) is configured to deform the first housing (3) The parasitic air gap between at least the pole face of the permanent magnet (11) and the corresponding wall of the first housing (3) is thereby reduced.

Description

technical field [0001] The present invention relates to rotating electrical machines, and in particular to rotating electrical machines comprising a rotor or stator having permanent magnets and in particular flux concentration, and more particularly to a rotor or stator of such a machine. Background technique [0002] As is generally known, the rotor or stator comprises a magnetic mass in which permanent magnets are inserted. These permanent magnets can be arranged at the surface directly facing the air gap or, in a variant, inside the magnetic mass, thus called "buried". [0003] In order to optimize the cost and performance of the motor, the number of magnets needs to be increased, especially when the quality of the motor cannot be increased or the performance maintained at the same level by lower quality magnets. [0004] Preferred electromagnetic properties are obtained when the embedded magnet is in preferential contact on each of the two pole faces with the magnetic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K15/03
CPCH02K1/2773H02K15/03H02K1/27
Inventor 塞缪尔·克希林
Owner MOTEURS LEROY SOMER