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rotor for motor

A rotor and substructure technology, applied in the direction of electromechanical devices, electrical components, electric components, etc.

Active Publication Date: 2020-05-29
VALEO EAUTOMOTIVE GERMANY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A possible disadvantage of electric machines with rotors with internal permanent magnets is that the magnetic fields of the permanent magnets are also present during no-load operation (idling) of the electric machine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The directions: axial 100 , radial 101 and azimuth 106 are always relative to the axis of rotation 100 of the rotor 1 and form a cylindrical coordinate system (rotor coordinate system) overall.

[0047] exist figure 1 A schematic axial sectional view of the rotor 1 with the annular ferromagnetic structure 3 of the electric machine (not shown) is shown in . The ferromagnetic structure 3 can be formed in the form of a plate and comprise a plurality of azimuthally adjacent permanent magnets 21 , 22 , wherein a first permanent magnet 21 and a second permanent magnet 22 each form a magnetic pole 24 of the rotor 1 . The permanent magnets 21 , 22 are partially enclosed by the ferromagnetic structure 3 in a form-fitting, material-fitting and / or force-fitting manner. Furthermore, the ferromagnetic structure 3 of the rotor 1 has a plurality of recesses 42 which are formed as air plugs 42 . In order to improve the mechanical stability, the corners and / or edges of the recess 42 o...

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PUM

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Abstract

The invention relates to a rotor (1) for an electrical machine. The rotor includes a first permanent magnet (21) and a ferromagnetism structure (3) having an outside (4) on the radially outer. The ferromagnetism structure (3) is used for surrounding at least a part of the first permanent magnet (21). A first interzonal region (81) of the ferromagnetism structure (3) is disposed between the transverse side (6) of the outside (4) of the first permanent magnet (21) and a radial backoff part (42) of ferromagnetism structure (3) relative to the first permanent magnet (21). The backoff part (42) includes material of which permeability is less than that of the ferromagnetism structure (3).

Description

technical field [0001] The invention relates to a rotor for an electric machine, in particular for an electric motor, comprising a first permanent magnet and a ferromagnetic structure with a radially outer outer side, wherein the ferromagnetic structure is designed to enclose the first permanent magnet at least part of . Background technique [0002] Several possible embodiments of an electric machine, in particular a rotor of an electric machine, are known from the prior art. In particular, rotors are known from the prior art which have internal permanent magnets, that is to say arranged inside the rotor (English: Internal-Permanent Magnet-Motors; IPM for short). [0003] An electric machine or a rotor with internal permanent magnets (IPM) not only has a reluctance torque but also a torque formed by the magnetic interaction between the poles of the stator of the electric machine and the internal permanent magnets. [0004] A possible disadvantage of electric machines with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/28
CPCH02K1/276H02K1/2766
Inventor 伊夫·伯克哈特马库斯·克勒普兹格马丁·库恩迈克尔·米勒克劳斯·施莱克尔阿里斯蒂德·斯帕尼奥洛
Owner VALEO EAUTOMOTIVE GERMANY GMBH