18-Pulse Transformer Rectifier Unit with an Amorphous Magnetic Core for Aircraft

Flur Ismagilov; Viacheslav Vavilov; Denis Gusakov; Viktoria Vavilova; Anton Mednov

doi:10.15866/iree.v13i1.14287

18-Pulse Transformer Rectifier Unit with an Amorphous Magnetic Core for Aircraft

Flur Ismagilov⁽¹⁾, Viacheslav Vavilov⁽²⁾, Denis Gusakov^(3*), Viktoria Vavilova⁽⁴⁾, Anton Mednov⁽⁵⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/iree.v13i1.14287

Abstract

This paper deals with a transformer-rectifier unit with a magnetic core made of amorphous steel. Transformers with various types of amorphous alloys have been compared. The most optimal amorphous alloy to use in a transformer is determined. The simulation of the electromagnetic and thermal processes occurring in transformers with a magnetic core made of amorphous steel was carried out, the amplitude and shape of the voltage and current were determined and the maximum temperature in nominal operating mode was defined. The dependencies of the specific losses in the studied samples of amorphous steel on the frequency of magnetization reversal, magnetic flux density and temperature were obtained. An experimental layout of a transformer rectifier unit with a magnetic core made of amorphous steel, loaded onto an 18-pulse rectifier with a power of 10.5 kVA and operating at a frequency of 400-800 Hz with a voltage of 115/27 V was designed and manufactured. An experimental study was carried out on the developed layout to verify the obtained data. The experimental studies confirmed the correctness of the chosen design methodology and of the design scheme of the transformer. It is important to note that the thermal loads detected on the transformer during its testing are within the permissible values.
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Keywords

Aircraft; Amorphous Steel; Idling Losses; Transformer Rectifier Unit

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References

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