An Input Current Waveshaping AC-DC Converter for Rectifier Loads

Bhim Singh; Vipin Garg; G.Bhuvaneswari

An Input Current Waveshaping AC-DC Converter for Rectifier Loads

Bhim Singh

Vipin Garg

G.Bhuvaneswari

Vol. 8, No. 1, pp. 1-9, Jan. 2008

10.6113/JPE.2008.8.1.1

multipulse AC-DC converter/power quality improvement/delta-polygon autotransformer/passive filter

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Abstract

This paper presents the design and analysis of a new input AC current waveshaping AC-DC converter for cost effective harmonic mitigation under varying loads. The proposed converter consists of a delta-polygon connected autotransformer based twelve-pulse AC-DC converter and a small rating passive shunt filter tuned at 11th harmonic frequency. The proposed AC-DC converter eliminates the most dominant 5th, 7th and 11th harmonics and reduces higher order harmonics; thereby, resulting in an improved power quality at AC mains. Moreover, the design of the autotransformer is modified to make it suitable for retrofit applications, where presently a 6-pulse diode bridge rectifier is used. To validate the proposed approach, various power quality indices are presented under varying loads. Experimental results obtained on the developed converter are given to validate the model and design of the proposed converter.

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Cite this article

[IEEE Style]

B. Singh, V. Garg, G.Bhuvaneswari, "An Input Current Waveshaping AC-DC Converter for Rectifier Loads," Journal of Power Electronics, vol. 8, no. 1, pp. 1-9, 2008. DOI: 10.6113/JPE.2008.8.1.1.

[ACM Style]

Bhim Singh, Vipin Garg, and G.Bhuvaneswari. 2008. An Input Current Waveshaping AC-DC Converter for Rectifier Loads. Journal of Power Electronics, 8, 1, (2008), 1-9. DOI: 10.6113/JPE.2008.8.1.1.