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Electric machine with low magnetic slot leakage

A technology for electric machines and groove walls, applied to magnetic circuits characterized by magnetic materials, magnetic circuit rotating parts, magnetic circuit stationary parts, etc., can solve the problems of reducing the efficiency of electric machines

Active Publication Date: 2017-05-24
ROLLS ROYCE DEUT LTD & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore more magnetomotive force is required, which in turn reduces the efficiency of the electrical machine

Method used

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  • Electric machine with low magnetic slot leakage
  • Electric machine with low magnetic slot leakage
  • Electric machine with low magnetic slot leakage

Examples

Experimental program
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Effect test

Embodiment Construction

[0033]The embodiments described next are preferred designs of the present invention. In this exemplary embodiment, however, the described components of this embodiment exhibit the individual features of the invention considered independently of each other, which also correspondingly improve the invention independently of each other and thus also individually or in addition The combinations shown are considered to be part of the present invention. Furthermore, the described refinements are also supplemented by further features according to the invention that have already been described.

[0034] exist figure 1 shows an electric machine E in longitudinal section, where it can be a synchronous machine, for example. exist figure 1 The middle axis of rotation A is also the illustrated axis of symmetry. An electric machine E comprises a stator S in which a winding of an electric coil W is arranged, wherein in figure 1 Only one of the coils W is shown in . The coils W can be al...

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Abstract

The invention relates to an active part (S) for an electric machine (E). The active part (S) can be designed as a stator (S) or a rotor (10) and has at least two slots (14) for arranging a respective electric coil winding (16) of an electric coil (W) and at least one connecting piece (22) arranged between adjacent slots (14) for conducting a magnetic flux (30) through the coil. The electric machine (E) is to have a high efficiency. For this purpose, the connecting piece (22) has a material (36) for conducting the magnetic flux (30), said material having a magnetic anisotropy at least in some regions with a light magnetization axis (38) and a hard magnetization axis (40). The light magnetization axis (38) is aligned parallel or at least at an angle of less than 25 degrees to a coil axis (M) of the coil (W), which surrounds the connecting piece (22).

Description

technical field [0001] The invention relates to an active component for an electric machine, which can be designed as a stator or as a rotor. The active component has slots for arranging the coil windings of the electrical coil. Corresponding webs are formed between adjacent slots so that they can be wound around the coil winding. A magnetic flux is guided through the coil via the web. Background technique [0002] An active component is understood in the context of the present invention to be a soft-magnetic component of an electric machine, via which a magnetic flux can be guided through the coil windings arranged in the slots, thereby closing the magnetic circuit of the electric machine. The less leakage flux a magnetic circuit has, the more efficiently an electrical machine can operate. [0003] Due to their regular arrangement, the webs are also described as stator teeth or rotor teeth. In electrical machines, stator teeth and rotor teeth are often subjected to high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/02H02K1/14H02K1/24
Inventor 拉尔夫·菲舍尔科比尼安·彼得迈尔拉沃夫·福尔默
Owner ROLLS ROYCE DEUT LTD & CO KG