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Single-phase or Vx connection traction transformer coiling structure for electric railway AT power supply mode

A technology for electrified railways and traction transformers, applied in the direction of transformer/inductor coil/winding/connection, transformer, fixed transformer, etc., can solve the problems of internal and external winding breakdown, poor reliability, complicated process, etc., and achieve easy and reliable coil manufacturing. High performance, simple process effect

Active Publication Date: 2010-12-15
中电变压器股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cross winding structure has complicated process, many solder joints, and poor reliability. If the insulation treatment is not good, it will easily cause breakdown of the inner and outer windings.

Method used

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  • Single-phase or Vx connection traction transformer coiling structure for electric railway AT power supply mode
  • Single-phase or Vx connection traction transformer coiling structure for electric railway AT power supply mode
  • Single-phase or Vx connection traction transformer coiling structure for electric railway AT power supply mode

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, the present invention is described in detail, as figure 1 As shown, including the iron core 4, the first part 31 of the feed-forward winding 3 is first wound outside the A-end core column of the iron core 4, then the first part 21 of the traction winding 2 is wound, and then the outermost high-voltage winding 1 is wound The first part 11, so that the first part 31 of the feed forward winding 3, the first part 21 of the traction winding 2, and the first part 11 of the high voltage winding 1 are arranged in three layers of inner, middle and outer layers, and are firstly wound on the B-end core column of the iron core 4 The second part 22 of the traction winding 2 is then wound on the second part 32 of the feedforward winding 3, and the outermost layer is wound on the second part 12 of the high voltage winding 1, so that the second part 22 of the traction winding 2, the feedforward winding 3 The second part 32 of the high-vo...

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Abstract

The invention discloses a single-phase winding structure for electrified railway (AT) power supply mode or of a Vx wiring traction transformer, which includes a high voltage winding, a traction winding and a positive feedback winding. The high voltage winding consists of two parts which are connected in series or in parallel. The invention is characterized in that: the traction winding and the positive feedback winding comprise the two parts connected in series respectively; a first part of the traction winding, a first part of the high voltage winding, and a first part of the positive feedback winding are arranged in three layers from inside to outside in sequence. A second part of the positive feedback winding, a second part of the traction winding and a second part of the high voltage winding are arranged in three layers from inside to outside in sequence. Compared with the prior art, the invention can meet the requirement on impedance and eliminate AT, and has the advantages of easy manufacturing of the winding, simple process, no welding points in the middle and high reliability.

Description

technical field [0001] The invention relates to the field of manufacturing a gasified railway AT power supply mode single-phase or Vx wiring traction transformer. Background technique [0002] Schematic diagram of AT power supply mode of electrified railway single-phase or Vx wiring traction transformer figure 2 . Among them, the Vx wiring traction transformer is composed of two single-phase traction transformers. The following is based on the single-phase traction transformer, and the conclusion is also applicable to the Vx wiring traction transformer. The transformer is composed of primary side high-voltage winding 1, secondary side T or traction winding 2, and tertiary side F or feed forward winding 3. In order to make the transformer cancel AT at the outlet of the substation, the impedance meets: [0003] 1) Z21=Z31 (can have error) [0004] 2) For three-phase Vx wiring, (3Z21+Z31-Z23-1) / 4<(0.45 / N)Ω (there may be errors) [0005] For single-phase Ii wiring, (3Z21+...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F30/10H01F27/28B60M3/00
Inventor 白忠东
Owner 中电变压器股份有限公司
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