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Method to manufacture improved exciter for an electrical generator

A technology for exciters and generators, which is used in the manufacture of stator/rotor bodies, electromechanical devices, electrical components, etc., and can solve the problems of low permanent magnetic field strength, high cost, and poor magnetic properties.

Active Publication Date: 2017-08-01
TEMPLE CHANGZHOU PRECISION METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An inherent problem with this design using hard steel is that, although less costly, the permanent magnetic field is less strong than using magnets or flashing circuits
These grades (high remanence hard steels) still have the disadvantage of being more expensive and less magnetic

Method used

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  • Method to manufacture improved exciter for an electrical generator
  • Method to manufacture improved exciter for an electrical generator
  • Method to manufacture improved exciter for an electrical generator

Examples

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Embodiment Construction

[0058] To facilitate an understanding of the principles of the invention, reference will now be made to the preferred exemplary embodiment / best mode which are illustrated in the drawings and specific language will be used to describe them. It will be understood, however, that no limitation of the scope of the invention is thereby intended and that those skilled in the art to which the invention pertains will appreciate that such modifications and further changes to the illustrated embodiments as well as the illustrated invention are included herein. Such further applications of principles.

[0059] By the method of the presented exemplary embodiments, improved higher silicon cold-rolled electrical steel (CRES) using semi-machined and fully-machined practices can be used to achieve higher coercivity values ​​than previously achieved using conventional fully hard semi-machined (CRML) grades. High residual magnetism, as measured by coercive force (Hc). In some designs of small a...

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PUM

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Abstract

In a method to manufacture an improved exciter for a generator, the exciter comprising an exciter rotor, and an exciter stator, a coil of full hard cold rolled electrical steel is provided, the steel comprising at least silicon in a weight percent greater than 0.60%. Without a prior annealing of the full hard cold rolled steel coil, the coil is slit to create at least one strip. The at least one strip is stamped to create a plurality of rotor laminations and a plurality of stator laminations from the same strip. The rotor laminations are separated from the stator laminations and the set of rotor laminations and the set of stator laminations are created. Only the set of exciter rotor laminations are annealed. The annealed set of exciter rotor laminations are assembled to create the exciter rotor and the set of not annealed exciter stator laminations are assembled to create the exciter stator.

Description

Background technique [0001] As we all know, an electric motor is a device in which electrical power flowing in windings in a "stator" is converted into mechanical power by means of the rotation of a "rotor" through which a fixed mechanical shaft is inserted. A generator is the reverse of an electric motor. The mechanical power driven by the external rotation or drive of a fixed mechanical shaft inserted in the rotor is converted into electricity by means of the generation of current in the windings of the stator, which can be used to power electrical devices. In most cases, the material used to build the stator and rotor is stamped laminations that are stacked into a core to form the stator and rotor. [0002] The basic principle of physics for the operation of a motor or generator is the "right-hand rule", whereby a current rotating in a winding in one direction (x-direction) produces an electric field at 90° to the current (y-direction), which in turn The force is generate...

Claims

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Application Information

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IPC IPC(8): H02K15/02C22C38/02C22C38/04C22C38/06C21D8/12
CPCC21D8/1244C22C38/002C22C38/02C22C38/04C22C38/06H02K15/02H02K2213/03C21D8/1233C21D8/1272C21D2261/00C22C38/004C22C38/008H01F1/16H02K1/02C21D8/12
Inventor 格温·约翰斯顿埃里克·J·赫林斯基
Owner TEMPLE CHANGZHOU PRECISION METAL PROD
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