Non-balance reactor boost/buck D-type 24-pulse aviation autotransformer rectifier

Abstract

The invention discloses a non-balance reactor boost / buck D-type 24-pulse aviation autotransformer rectifier. The primary side of each phase of an autotransformer is a long winding with an extension winding and a center tap or just provided with a center tap, and the secondary sides of each phase are four short windings. Two boost structures and three buck structures are designed to realize the adjustment of 0.545 to 2.2 times of autotransformer output voltage. 24 voltage vectors with each amplitude and 15-degree difference for phase positions in sequence transmitted to four subsequent rectifier bridges which comprise one main rectifier bridge and three auxiliary rectifier bridges are formed through reasonable connection of windings and reasonable design of number of turns of winding, onlytwo diodes in the rectifier bridge set at every moment are conducted simultaneously, and 24-pulse direct current voltage can be output without a balance reactor. According to the non-balance reactor boost / buck D-type 24-pulse aviation autotransformer rectifier, the problem that the output voltage of a non-balance reactor 24-pulse autotransformer rectifier is uncontrollable is solved, and boost andbuck adjustment in the relatively wide range of output voltage is realized through reasonable design and optimization of a 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...

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

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