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An autotransformer-based 36-pulse controlled AC-DC converter

Author(s): Singh Bhim | Gairola Sanjay

Journal: IETE Journal of Research
ISSN 0377-2063

Volume: 54;
Issue: 4;
Start page: 253;
Date: 2008;
Original page

Keywords: 36-pulse | AC-DC converter | Power quality | AC drives | Autotransformer.

This paper proposes a non-isolated 36-pulse controlled AC-DC converter for medium power rating drives. It involves pulse multiplication in a 12-pulse AC-DC converter. The approach employs a polygon autotransformer arrangement, which results in a near equal leakage reactance in series with each thyristor bridge. The volt-ampere rating of the autotransformer is observed to be small and the converter meets IEEE-519 standard power-quality requirements over a wide range of firing angle.
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