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Method for lowering no-load loss of transformer core and coil winding sleeving assembly

A no-load loss and coil winding technology, applied in the field of transformers, can solve the problems of increasing the reluctance of the iron core, increasing the no-load loss value of the amorphous alloy transformer core, etc., so as to reduce the no-load loss, reduce the noise value, and improve the overall performance. Effect

Inactive Publication Date: 2019-01-29
SHANGHAI ZHIXIN ELECTRIC AMORPHOUS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the production process, the amorphous core is formed by superimposing open sheet-shaped amorphous strips. Since each set of amorphous strips has a certain thickness when sheared, an A gap with a width of 2mm and a length of 3-5mm, the existence of this gap increases the reluctance of the core, thereby increasing the no-load loss value of the amorphous alloy transformer core

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  • Method for lowering no-load loss of transformer core and coil winding sleeving assembly
  • Method for lowering no-load loss of transformer core and coil winding sleeving assembly
  • Method for lowering no-load loss of transformer core and coil winding sleeving assembly

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Embodiment 1

[0051] This embodiment provides a method for reducing the no-load loss of the transformer core, including the following steps:

[0052] Firstly, each layer of amorphous alloy strips is overlapped end to end, and each layer of amorphous alloy strips forms an overlapping gap with another layer of amorphous alloy strips below, so as to obtain an amorphous alloy core.

[0053] Secondly, open the amorphous alloy core at the tower head according to the lapping sequence, and then fit the coil winding on the amorphous alloy core; after the fitting is completed, close the laps of the amorphous alloy core in sequence according to the strip stacking sequence.

[0054] Finally, inject the composite material into the lap space of the amorphous alloy iron core after the set, and let it stand for 30 minutes; the composite material includes epoxy powder, acetone and iron powder, and the mass ratio of epoxy powder, acetone and iron powder is 40 :70:1.

Embodiment 2

[0056] This embodiment provides a method for reducing the no-load loss of the transformer core, including the following steps:

[0057] Firstly, each layer of amorphous alloy strips is overlapped end to end, and each layer of amorphous alloy strips forms an overlapping gap with another layer of amorphous alloy strips below, so as to obtain an amorphous alloy core.

[0058] Secondly, open the amorphous alloy core at the tower head according to the lapping sequence, and then fit the coil winding on the amorphous alloy core; after the fitting is completed, close the laps of the amorphous alloy core in sequence according to the strip stacking sequence.

[0059] Finally, inject the composite material into the gap of the lapping head of the amorphous alloy iron core after the set, and let it stand for 60 minutes; wherein the composite material includes epoxy powder, acetone and iron powder, and the mass ratio of epoxy powder, acetone and iron powder is 60 :90:1.

Embodiment 3

[0061] This embodiment provides a method for reducing the no-load loss of the transformer core, including the following steps:

[0062] Firstly, each layer of amorphous alloy strips is overlapped end to end, and each layer of amorphous alloy strips forms an overlapping gap with another layer of amorphous alloy strips below, so as to obtain an amorphous alloy core.

[0063] Secondly, open the amorphous alloy core at the tower head according to the lapping sequence, and then fit the coil winding on the amorphous alloy core; after the fitting is completed, close the laps of the amorphous alloy core in sequence according to the strip stacking sequence.

[0064] Finally, inject the composite material into the gap of the amorphous alloy core after the set, and let it stand for 50 minutes; the composite material includes epoxy powder, cyclohexanone and soft magnetic powder, and epoxy powder, cyclohexanone and soft magnetic powder The mass ratio is 47:76:1.

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Abstract

The invention provides a method for lowering no-load loss of a transformer core and a coil winding sleeving assembly, and relates to the technical field of transformers. The method for lowering the no-load loss of the transformer core comprises the steps that an amorphous alloy core with lap gaps is formed after multiple layers of amorphous alloy strips are in lap joint with one another, and thena coil winding sleeves the amorphous alloy core; a composite material is injected into the lap gaps of the amorphous alloy core and cured, wherein the composite material is prepared from epoxy powder,a volatile solvent and a ferromagnetic material, and the mass ratio of the epoxy powder to the volatile solvent to the ferromagnetic material is (40-60):(70-90):1. According to the method, the coil winding sleeving assembly is adopted for forming the amorphous alloy core with the lap gaps through lap joint of the amorphous alloy strips separately, the lap gaps are filled with the composite material, so that the ferromagnetic material fills the lap gaps and does not leak, and the no-load loss value of the alloy transformer is lowered.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a method for reducing the no-load loss of a transformer core and a coil winding package assembly. Background technique [0002] The amorphous alloy transformer core is made of superimposed amorphous alloy strips. Since the metal atoms of the amorphous alloy strips are in a disordered amorphous arrangement, compared with traditional magnetic materials, it has high saturation magnetic induction, low loss, and high The initial magnetic permeability and low coercive force make the amorphous alloy core have lower no-load loss. [0003] However, in the production process, the amorphous core is formed by superimposing the sheet-shaped amorphous strips with openings. Since each set of amorphous strips has a certain thickness when sheared, a gap is formed at the overlap of each set of amorphous strips. A gap with a width of 2mm and a length of 3-5mm, the existence of this gap improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F1/153
CPCH01F1/15308H01F27/24
Inventor 郝柱李力顾伟张士岩张志键袁靖
Owner SHANGHAI ZHIXIN ELECTRIC AMORPHOUS