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18-pulse phase shift rectifier transformer

A rectifier transformer and transformer technology, applied in the field of transformers, can solve the problems such as poor harmonic suppression capability of pulse phase-shifted rectifier transformers, and achieve the effect of good harmonic suppression capability.

Active Publication Date: 2014-02-19
FOSHAN OULI ELECTRONICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to propose an 18-pulse phase-shift rectifier transformer to optimize the performance of the pulse phase-shift rectifier transformer and solve the problem of poor harmonic suppression ability of the pulse phase-shift rectifier transformer

Method used

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0021] figure 1 It is a schematic diagram of winding connection of an 18-pulse phase-shifting rectifier transformer according to an embodiment of the present invention, such as figure 1 shown. The 18-pulse phase-shifting rectifier transformer includes a transformer frame and windings, the transformer frame includes a first iron core leg 11, a second iron core leg 12 and a third iron core leg 13, and the windings respectively include a primary winding 21 and a secondary secondary winding 22, the primary winding 21 includes a ...

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Abstract

The invention discloses an 18-pulse phase shift rectifier transformer. The 18-pulse phase shift rectifier transformer comprises a transformer framework and three windings, wherein the transformer framework comprises three iron core pillars, each winding comprises primary windings and secondary windings, the primary windings are wound on the three iron core pillars respectively, after each secondary winding is divided into three sections of secondary sub-windings, the secondary windings are wound on the primary windings respectively in a cake type, and a first flux leakage iron core is arranged at one side between each primary winding and the corresponding secondary winding. The 18-pulse phase shift rectifier transformer can well suppress harmonic waves and has good heat radiation performance.

Description

technical field [0001] The invention relates to a transformer, in particular to an 18-pulse phase-shifting rectifier transformer. Background technique [0002] With the rapid development of power electronics technology, more and more rectifiers are applied to various fields. Since the rectifier adopts the phase-shift control method, what is absorbed from the grid side is a sine wave with a missing angle, and another part is left to the grid side. The sine wave with missing angle contains a large number of harmonics in the sine wave on the grid side, which reduces the electromagnetic compatibility performance of the equipment and brings harm to the grid and other electrical equipment. [0003] In the prior art, a 6-pulse rectifier transformer and a 12-pulse rectifier transformer are generally used. The 6-pulse is controlled by 6 pulse switches to control the 6 thyristors respectively, and the current contains 6k±1 (k is an integer) sub-harmonic , that is, the current contain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/30H01F27/28H01F27/245
Inventor 李志成
Owner FOSHAN OULI ELECTRONICS
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