A DLQR applied to boost converters with switched loads: Design and analysis

Author

Montagner, Vinícius F. ; Maccari, Luiz A., Jr. ; Dupont, Fabrício H. ; Pinheiro, Humberto ; Oliveira, Ricardo C L F

Author_Institution

Power Electron. & Control Res. Group - GEPOC, Fed. Univ. of Santa Maria - UFSM, Santa Maria, Brazil

fYear

2011

fDate

11-15 Sept. 2011

Firstpage

68

Lastpage

73

Abstract

In this paper, the design and the experimental validation of a discrete linear quadratic regulator applied to boost converters with switched loads are investigated. The closed-loop system stability under arbitrary switching is ensured by means of the existence of a switched Lyapunov function, obtained by means of linear matrix inequalities, which is the main contribution of this work. The control law is implemented using a digital signal processor. Experimental results reveal the good transient and steady state performances as well as demonstrate a strong correspondence with the simulation, proving the practical viability of the proposed procedure.

Keywords

Lyapunov matrix equations; closed loop systems; digital signal processing chips; linear matrix inequalities; power convertors; stability; DLQR; arbitrary switching; boost converters; closed-loop system stability; control law; digital signal processor; discrete linear quadratic regulator; linear matrix inequalities; steady state performance; switched Lyapunov function; Linear systems; Load modeling; Lyapunov methods; Stability analysis; Switches; Transient analysis; Boost Converter; Discrete Linear Quadratic Regulator; Linear Matrix Inequalities; Optimal Control; Switched Linear Systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (COBEP), 2011 Brazilian

Conference_Location

Praiamar

ISSN

2175-8603

Print_ISBN

978-1-4577-1644-7

Electronic_ISBN

2175-8603

Type

conf

DOI

10.1109/COBEP.2011.6085201

Filename

6085201