Article: Auto-connected transformer with 40° phase shifting for harmonic elimination Journal: International Journal of Signal and Imaging Systems Engineering (IJSISE) 2016 Vol.9 No.4/5 pp.233 - 241 Abstract: The conventional six-pulse and 12-pulse generate harmonics pollution in the network. In order to reduce the harmonics propagation has proposed the use of other structures that offer a greater flexibility to transit control of energy and a significant harmonics reduction. In this paper, the authors present the design, analysis and experimental set-up of a delta-connected autotransformer-based 18-pulse ac-dc converter with 40° phase shifting to decrease the harmonics pollution in the network side. The simulation results show that autotransformer configuration 18-pulse capable to suppress harmonics of the order less than 18th.n±1. This design gives a better THD current compared with the two configurations, six-pulse and 12-pulse. Moreover, a prototype of the proposed autotransformer-based 18-pulse ac-dc converter is developed and test results are presented to validate the developed design procedure and simulation models of this ac-dc converter. Inderscience Publishers - linking academia, business and industry through research

Title: Auto-connected transformer with 40° phase shifting for harmonic elimination

Authors: Arafet Ben Ammar; Faouzi Ben Ammar

Addresses: Université de Tunis, Ecole Nationale Supérieure d'Ingénieur de Tunis, Avenue Taha Hussein Montfleury, 1008 Tunis, Tunisia; Laboratoire matériaux, Mesures et Applications "MMA", Centre Urbain Nord, Bp676, 1080 Charguia Cedex, Tunisia ' Université de Carthage, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord, Bp676, 1080 Charguia Cedex, Tunisia; Laboratoire matériaux, Mesures et Applications "MMA", Centre Urbain Nord, Bp676, 1080 Charguia Cedex, Tunisia

Abstract: The conventional six-pulse and 12-pulse generate harmonics pollution in the network. In order to reduce the harmonics propagation has proposed the use of other structures that offer a greater flexibility to transit control of energy and a significant harmonics reduction. In this paper, the authors present the design, analysis and experimental set-up of a delta-connected autotransformer-based 18-pulse ac-dc converter with 40° phase shifting to decrease the harmonics pollution in the network side. The simulation results show that autotransformer configuration 18-pulse capable to suppress harmonics of the order less than 18th.n±1. This design gives a better THD current compared with the two configurations, six-pulse and 12-pulse. Moreover, a prototype of the proposed autotransformer-based 18-pulse ac-dc converter is developed and test results are presented to validate the developed design procedure and simulation models of this ac-dc converter.

Keywords: autotransformers; delta connection; design; 18-pulse ac-dc converters; phase shifting; harmonic elimination; simulation; THD; total harmonic distortion.

DOI: 10.1504/IJSISE.2016.078260

International Journal of Signal and Imaging Systems Engineering, 2016 Vol.9 No.4/5, pp.233 - 241

Received: 20 May 2015
Accepted: 08 Feb 2016
Published online: 10 Aug 2016 *

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Title: Auto-connected transformer with 40° phase shifting for harmonic elimination

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