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This paper presents the design and analysis of a star connected autotransformer based twelve-phase AC-DC converter for improving power quality at the point of common coupling (PCC) in direct torque controlled induction motor drives (DTCIMDs). A star connected autotransformer with five windings per phase is used to realize the twelve-phase AC-DC converter. The basic design equations are derived to...
This paper presents the design and analysis of an autotransformer based 30-pulse AC-DC converter feeding vector controlled induction motor drives. The proposed AC-DC converter is based on a star connected autotransformer, designed for producing 15-phase shifted AC voltages for effective harmonic reduction. The proposed 30-pulse AC-DC converter is suitable for retrofit applications, where, presently...
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