1. Hamiltonian point of view on parallel interconnection of buck converters
- Author
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Jean-Yves Gauthier, Jérémie Kreiss, Romain Delpoux, Xuefang Lin-Shi, Damien Eberard, Jean-Francois Tregouet, Ampère, Département Automatique pour l'Ingénierie des Systèmes (AIS), Ampère (AMPERE), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
- Subjects
0209 industrial biotechnology ,Computer science ,power system control ,02 engineering and technology ,Inductor ,Topology ,7. Clean energy ,law.invention ,[SPI.AUTO]Engineering Sciences [physics]/Automatic ,020901 industrial engineering & automation ,Frequency separation ,law ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,Hamiltonian systems ,Interconnection ,Buck converter ,020208 electrical & electronic engineering ,Converters ,robust energy shaping control ,Capacitor ,Control and Systems Engineering ,Voltage regulation ,DC–DC power converters ,Hamiltonian (control theory) ,robust control - Abstract
International audience; In this article, parallel interconnection of dc/dc converters is considered. For this topology of converters feeding a common load, it has been recently shown that dynamics related to voltage regulation can be completely separated from the current distribution without considering frequency separation arguments, which inevitably limits achievable performance. Within the Hamiltonian framework, this article shows that this separation between current distribution and voltage regulation is linked to the energy conservative quantities: the Casimir functions. Furthermore, a robust control law is given in this framework to get around the fact that the load might be unknown. In this article, we also ensure that the system converges to the optimal current repartition, without requiring explicit expression of the optimal locus. Finally, resulting control law efficiency is assessed through experimental results.
- Published
- 2021
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