Non-balanced reactor step-up/step-down D-type 24-pulse aviation autotransformer rectifier

A technology of balanced reactor and autotransformer, which is applied in the direction of transformer/inductor coil/winding/connection, AC power input conversion to DC power output, irreversible AC power input conversion to DC power output, etc. adjustment and other issues

Active Publication Date: 2021-02-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional 24-pulse transformer, the volume and weight of the autotransformer is significantly reduced, but the output voltage of the autotransformer is determined by the input voltage and cannot be adjusted. The application range has certain limitations. In order to meet the power requirements of different equipment, it is necessary to Reasonably design and optimize the structure of the autotransformer to make the output voltage meet the demand

Method used

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  • Non-balanced reactor step-up/step-down D-type 24-pulse aviation autotransformer rectifier
  • Non-balanced reactor step-up/step-down D-type 24-pulse aviation autotransformer rectifier
  • Non-balanced reactor step-up/step-down D-type 24-pulse aviation autotransformer rectifier

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Embodiment Construction

[0047] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] In this embodiment, an implementation method of a winding structure with a transformer output voltage ratio of 1≤k<1.38 is taken as an example for illustration.

[0049] No balance reactor step-up / step-down type D-type 24-pulse aviation autotransformer rectifier. The long windings with taps ar, as, and at, the primary winding AB is divided into four sections Aar, aras, asat, atB by the middle taps ar, as, at, and the secondary side is four short windings bmb, clcr, bsb2, btb3; A phase primary The first terminal A of the side winding is the input terminal of the A phase of the power supply of the transformer, which is connected to the terminal A of the extended winding amA of the A phase and the terminal A of the primary winding CA of the C phase, and the first terminal am of the extended winding amA of the primary side of the A phase...

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Abstract

The invention discloses a non-balanced reactor step-up / step-down D-type 24-pulse aviation autotransformer rectifier. The primary side of each phase of the autotransformer is a long winding with an extended winding and a middle tap or only a middle tap. , and the secondary side of each phase is four short windings. Two kinds of step-up structures and three kinds of step-down structures are designed to realize the adjustment of the output voltage of the autotransformer by 0.545 to 2.2 times. Through the reasonable connection of the winding and the reasonable design of the number of winding turns, 24 voltage vectors with equal amplitude and 15° phase difference are formed and sent to the subsequent 1 main 3 auxiliary 4 rectifier bridges to ensure that there are only two rectifier bridge groups at each moment Two diodes are turned on at the same time, and the 24-pulse DC voltage can be output without a balance reactor. The invention solves the problem that the output voltage of a 24-pulse autotransformer rectifier without a balance reactor cannot be adjusted, and realizes wide-ranging step-down adjustment of the output voltage through rational design and optimization of the transformer structure.

Description

technical field [0001] The invention belongs to the technical field of electric energy conversion, and in particular relates to a D-type 24-pulse aviation self-coupling transformer rectifier with no-balanced reactor step-up / step-down. Background technique [0002] The multi-pulse rectifier has obvious advantages such as simple structure, high reliability, high efficiency, and strong overload capacity. It is used in aviation intermediate frequency power supply occasions, and the volume and weight of the transformer will be significantly reduced. It has broad application prospects in the aviation field. For airborne electronic equipment, the national military standard GJB181A-2003 and the civil aviation aircraft airworthiness standard RTCA_DO-160E require that the total harmonic content (THD) of the AC side input current be less than 10%. The theoretical value of the input current THD of the 24-pulse rectifier is only 7.57%, and no filtering measures are required, and it is su...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02M7/06H01F27/28
CPCH01F27/28H02M7/068
Inventor李男葛红娟李静吴红兰朱佳祺史艳博
OwnerNANJING UNIV OF AERONAUTICS & ASTRONAUTICS