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Energies 2017, 10(1), 133; doi:10.3390/en10010133

Control of a Three-Phase to Single-Phase Back-to-Back Converter for Electrical Resistance Seam Welding Systems

1
Development of Power Electronics Systems (DEPsys), Route du Verney 20B, 1070 Puidoux, Switzerland
2
Laboratory of Electronics, Department of Physics, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
3
Département des Technologies Industrielles (TIN°), Haute école spécialisée de Suisse occidentale (HES-SO), University of Applied Sciences of Western Switzerland, Route de Cheseaux 1, CH-1401 Yverdon-les-Bains, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editor: Gabriele Grandi
Received: 21 November 2016 / Revised: 4 January 2017 / Accepted: 12 January 2017 / Published: 21 January 2017
View Full-Text   |   Download PDF [7621 KB, uploaded 21 January 2017]   |  

Abstract

DC link back-to-back converters are widely used in industrial applications. This interest comes from their power factor unity capability on the utility grid and to maintain regulated output parameters, thanks to the decoupling between the grid and the load side. In this paper, a 150 KVA prototype of DC link back-to-back converter for electrical resistance seam welding applications is described. The focus of the paper is on the control strategy developed to absorb constant power from the three-phase utility grid. The key idea is to allow the voltage on the DC bus to vary in order to avoid the propagation at the input side of the pulsed power required by the load. An estimation procedure of the load parameters is presented too. The effectiveness of this control scheme has been proved by simulations and tests. View Full-Text
Keywords: DC-link back-to-back converters; power factor correction; three phase pulse width modulated (PWM) rectifier; parameter estimation; resistance seam welding DC-link back-to-back converters; power factor correction; three phase pulse width modulated (PWM) rectifier; parameter estimation; resistance seam welding
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kissling, S.; Talon Louokdom, E.; Biya-Motto, F.; Essimbi Zobo, B.; Carpita, M. Control of a Three-Phase to Single-Phase Back-to-Back Converter for Electrical Resistance Seam Welding Systems. Energies 2017, 10, 133.

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