Title :
Robust gain-scheduled control of dc-dc converters: An LMI approach
Author :
Olalla, Carlos ; Queinnec, Isabelle ; Leyva, Ramon
Author_Institution :
Dept. of Electr., Comput., & Energy Eng., Univ. of Colorado, Boulder, CO, USA
Abstract :
This paper deals with the modeling of nonlinear and time-varying dc-dc converters in linear parameter variant (LPV) form. Such LPV models are employed to derive synthesis conditions in order to obtain robust gain-scheduled controllers in a systematic form, thanks to a linear convex formulation. The proposed synthesis algorithm allows taking into account uncertainties of the system and common specifications of power converters, such as settling time, overshoot and disturbance rejection. The LPV formulation allows to obtain improved robustness and performance properties, as compared to previous time-invariant synthesis approaches. The results are verified by boost dc-dc converter simulations.
Keywords :
DC-DC power convertors; control system synthesis; gain control; linear matrix inequalities; nonlinear control systems; robust control; time-varying systems; LMI approach; LPV model; linear convex formulation; linear parameter variant form; nonlinear converters; power converters; robust gain scheduled controller; time invariant synthesis; time varying dc-dc converter; Control systems; Damping; Load modeling; Matrix converters; Robustness; Symmetric matrices; Uncertainty;
Conference_Titel :
Control Applications (CCA), 2011 IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4577-1062-9
Electronic_ISBN :
978-1-4577-1061-2
DOI :
10.1109/CCA.2011.6044396
