Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Pulse Multiplication in Autotransformer Based AC-DC Converters using a Zigzag Connection

  • Singh, Bhim (Department of Electrical Engineering, Indian Institute of Technology) ;
  • Gairola, Sanjay (Department of Electrical Engineering, Indian Institute of Technology)
  • Published : 2007.07.20
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Abstract

This paper deals with pulse multiplication in zigzag connected autotransformer based 12-pulse AC-DC converters feeding vector controlled induction motor drives (VCIMD) for improving the power quality at the point of common coupling (PCC) without using a Zero-Sequence-Blocking-Transformer (ZSBT). The proposed 24-pulse AC-DC converter is based on the principle of DC ripple re-injection technique for pulse multiplication and harmonic mitigation. The design of the autotransformer is carried out for the proposed AC-DC converter and the effect of load variation on VCIMD is also studied to demonstrate the effectiveness of the proposed AC-DC converter. Test results from a laboratory developed prototype, along with simulated results, are presented to validate the design and model of the proposed 24-pulse AC-DC converter.

Keywords

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