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Robust fixed frequency control for parallel connected Forward/Buck converters

Published online by Cambridge University Press:  16 September 2003

S. Pierfederici ,
J.-P. Martin ,
F. Meybody-Tabar  and
B. Davat
S. Pierfederici
Affiliation:
Groupe de Recherche en Électrotechnique et Électronique de Nancy, 2 avenue de la forêt de Haye, 54516 Vandœuvre-lès-Nancy Cedex, France
J.-P. Martin*
Affiliation:
Groupe de Recherche en Électrotechnique et Électronique de Nancy, 2 avenue de la forêt de Haye, 54516 Vandœuvre-lès-Nancy Cedex, France
F. Meybody-Tabar
Affiliation:
Groupe de Recherche en Électrotechnique et Électronique de Nancy, 2 avenue de la forêt de Haye, 54516 Vandœuvre-lès-Nancy Cedex, France
B. Davat
Affiliation:
Groupe de Recherche en Électrotechnique et Électronique de Nancy, 2 avenue de la forêt de Haye, 54516 Vandœuvre-lès-Nancy Cedex, France
*
[email protected]
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Abstract

In this paper, we present arobust control strategy which is well adapted to parallel connected Forward/Buck converters. It is based on a non-linear controller which uses the advantages offered bysliding mode control and peak current techniques. This control offers fixed frequencycontrol without using equivalent control calculation, synchronized ramp or variablehysteresis bandwidth. It also provides good robustness depending on variations of loadparameters. A model of the system is developed which allows us to study the systemindependently of the module number that constitutes the structure. The controllability ofthe system is discussed and an analysis of the current behavior is provided.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 24 , Issue 2 , November 2003 , pp. 121 - 138
Copyright
© EDP Sciences, 2003

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References

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