Title :
Buck DC-DC converter control using invariant sets techniques
Author :
Luca, Anamarian ; Rodriguez-Ayerbe, Pedro ; Dumur, Didier ; Lefranc, Pierre
Author_Institution :
Autom. Control Dept., SUPELEC Syst. Sci. (E3S), Gif-sur-Yvette, France
Abstract :
This paper presents an invariant sets technique for feedback law synthesis, in order to control a Buck DC-DC converter. For the linear discrete-time system affected by perturbations and constraints, the proposed method gives the best feedback gain in terms of finding the maximal invariant ellipsoid. As a result of this technique, the maximal ellipsoid is derived but with degraded closed loop performances. In order to assure satisfactory transients the concept of pole placement in LMI regions is introduced. This approach is finally validated in simulation considering the aforementioned converter.
Keywords :
DC-DC power convertors; closed loop systems; control system synthesis; feedback; invariance; linear matrix inequalities; machine control; LMI; buck DC-DC converter control; closed loop performance; feedback law synthesis; invariant set techniques; linear discrete-time system; linear matrix inequalities; maximal ellipsoid; Automatic control; Control system synthesis; Control systems; DC-DC power converters; Degradation; Ellipsoids; Robustness; Stability; State feedback; Voltage control;
Conference_Titel :
MELECON 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference
Conference_Location :
Valletta
Print_ISBN :
978-1-4244-5793-9
DOI :
10.1109/MELCON.2010.5476308