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Bobbin and transformer using the same

A technology of transformers and spools, applied in the field of transformers, to achieve the effect of improving cooling properties, good insulation properties, and reducing overall size

Inactive Publication Date: 2017-03-22
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when trying to achieve the goal of reducing the size of the transformer, the insulation air gap becomes the limiting factor

Method used

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  • Bobbin and transformer using the same
  • Bobbin and transformer using the same
  • Bobbin and transformer using the same

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Reference will now be made in detail to various embodiments, one or more examples of which are shown in the figures. Each example is provided by way of explanation and not meant to be limiting. For example, features shown or described as part of one embodiment can be used with other embodiments to yield still a further embodiment. The present disclosure is intended to cover such modifications and variations.

[0018] In the following description of the drawings, the same reference numerals refer to the same components. In general, only differences relating to a single embodiment will be described. When several identical items or components appear in a drawing, not all of the components have a reference number, thereby simplifying the appearance.

[0019] The systems and methods are not limited to the particular embodiments described herein, but rather, components of the system and / or steps of the method may be utilized independently and separately from other componen...

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Abstract

An air-cooled transformer (10) is provided. It comprises a core (20), an inner winding (30), an outer winding (40) having an outer boundary face (42) on its outside face, an air gap (50) between the inner winding (30) and the outer winding (40), a bobbin (60) comprising a dielectric material, located adjacent the outer boundary face (42) of the outer winding (40) and supporting the outer winding (40) from its outside face, wherein the bobbin (60) comprises supporting portions (70) which extend into the air gap (50), characterized in that,the bobbin (60) is mounted to the core (20) via at least one fastening element (100) and the fastening element (100) is adapted for positioning the bobbin (60) and the outer winding (40) with respect to the inner winding (30) for adjusting a stray inductance of the transformer(10).

Description

technical field [0001] The present disclosure generally relates to transformers. In particular, it relates to intermediate frequency transformers having air gaps between windings and at least one fastening element for positioning the windings relative to each other. Background technique [0002] Cooling is a critical aspect in the design of a transformer because the current flowing through the windings inevitably generates heat. Meanwhile, electrical isolation is one of the key aspects in the design of an intermediate frequency transformer, especially the insulation between the high voltage (HV) winding and the low voltage (LV) winding. The difference in potential between the high-voltage winding and the low-voltage winding defines the required minimum electrical insulation, which in turn depends on the distance between the winding and the insulating material. [0003] Introducing a member of solid material (such as an inner bobbin) in the air gap between the windings redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F5/02H01F27/32H01F27/08H01F27/30
CPCH01F27/325H01F5/02H01F27/085H01F27/306
Inventor D.卡尼U.多罗费尼克
Owner ABB (SCHWEIZ) AG
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