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Electrotechnical coil, method for its production, and electromagnet or motor comprising at least one such coil

A coil axis, coil technology, applied in the manufacture of motor generators, coil manufacturing, cable/conductor manufacturing, etc., can solve the problem of reducing the filling factor of the groove

Active Publication Date: 2022-04-12
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the gaps between the windings required for demolding and the surface quality of the coils produced by the casting process lead to a reduction in the filling factor of the grooves and considerable problems with the subsequent insulation

Method used

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  • Electrotechnical coil, method for its production, and electromagnet or motor comprising at least one such coil
  • Electrotechnical coil, method for its production, and electromagnet or motor comprising at least one such coil
  • Electrotechnical coil, method for its production, and electromagnet or motor comprising at least one such coil

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Embodiment Construction

[0071] Preferred embodiments of the present invention will be described in detail below using the drawings. A person skilled in the art understands that the features described in connection with an exemplary embodiment do not have to be implemented as a whole in order to implement the claimed invention, but can also be implemented independently of each other in other configurations. In particular, some features described in the embodiments may be omitted or other features may be added.

[0072] When preparing the cast coil 1 in step A, the final geometry of the electrotechnical coil 1 is designed, for example using CAD. Depending on the application, the number, radius, pitch, cross-sectional shape and cross-sectional area of ​​the coil windings are determined, and the coil geometry is defined in the installed state according to the available installation space. It goes without saying that the number, radius, pitch, cross-sectional shape and cross-sectional area of ​​the coil ...

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Abstract

The invention relates to an electrotechnical coil, a method for its production and an electromagnet or electric machine comprising at least one such coil. The object of the present invention is to produce and use an electrotechnical coil in order to achieve an increased groove fill factor reliably and simply in a reproducible and economical manner. This is achieved in a method according to the invention with the steps of: step A: casting an electrotechnical coil with at least one winding extending around the coil axis; and step B: shaping said coil so as to modify said at least one winding The cross-sections Q, Q' of the at least one winding are at least partially displaced in the radial direction R relative to the coil axis A with respect to the center of area FS, FS' of said cross-sections Q, Q' of said at least one winding.

Description

technical field [0001] The invention relates to an electrotechnical coil, a method for its production and an electromagnet or electric machine comprising at least one such coil. In particular, the invention relates to the alignment of the shape of an electrical coil produced by a casting process and composed of an electrically conductive material with a stripping chamfer in a combined method. Background technique [0002] Until now, coils were often wound from wires (circular profile, rectangular profile), which resulted in insufficient utilization of space (groove fill factor) due to the conductor shape, especially for tapered design coils. The main geometric limitation in the state of the art lies in the limited possibility of using different winding cross-sections: even at optimum utilization, the use of round wires for the windings leaves unusable gaps between the individual windings. The necessary insulation, lead-in and discrete distribution of conductors also limit t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/04H02K15/04H01B13/00B22C9/22
CPCB22C9/22H01F41/04H02K15/04H01F41/064H01F41/077B22C9/02H01F41/12H02K3/04H02K15/045
Inventor 马库斯·贝格曼米尔科·巴克米夏埃多·霍伊泽尔马库斯·维尔纳迈克·林内曼弗伦茨-约瑟夫·沃斯特曼
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV