Pulse Multiplication in Autotransformer Based AC-DC Converters Using a Zigzag Connection

Bhim Singh; Sanjay Gairola

Pulse Multiplication in Autotransformer Based AC-DC Converters Using a Zigzag Connection

Bhim Singh

Sanjay Gairola

Vol. 7, No. 3, pp. 191-202, Jul. 2007

10.6113/JPE.2007.7.3.191

autotransformer

multipulse ac-dc converter

Pulse multiplication

Power quality

VCIMD

PDF

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.

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Cite this article

[IEEE Style]

B. Singh and S. Gairola, "Pulse Multiplication in Autotransformer Based AC-DC Converters Using a Zigzag Connection," Journal of Power Electronics, vol. 7, no. 3, pp. 191-202, 2007. DOI: 10.6113/JPE.2007.7.3.191.

[ACM Style]

Bhim Singh and Sanjay Gairola. 2007. Pulse Multiplication in Autotransformer Based AC-DC Converters Using a Zigzag Connection. Journal of Power Electronics, 7, 3, (2007), 191-202. DOI: 10.6113/JPE.2007.7.3.191.