Control of a three-phase to single-phase back-to-back converter for electrical resistance seam welding systems

Kissling, Simon (Development of Power Electronics Systems (DEPsys), Puidoux, Switzerland) ; Talon Louokdom, Elie (Laboratory of Electronics, Department of Physics, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon) ; Biya-Motto, Frédéric (Laboratory of Electronics, Department of Physics, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon) ; Essimbi Zobo, Bernard (Laboratory of Electronics, Department of Physics, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon) ; Carpita, Mauro (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland)

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.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
IESE - Institut d'Energie et Systèmes Electriques
Subject(s):
Ingénierie
Date:
2017-01
Pagination:
15 p.
Published in:
Energies
Numeration (vol. no.):
2017, 10, 133
DOI:
ISSN:
1996-1073
Appears in Collection:



 Record created 2018-11-06, last modified 2018-12-20

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