Robust state feedback control applied to a UPS system

Author

Montagner, Vinicius F. ; Peres, Pedro L D

Author_Institution

Sch. of Electr. & Comput. Eng., Campinas Univ., Brazil

Volume

3

fYear

2003

fDate

2-6 Nov. 2003

Firstpage

2245

Abstract

This paper addresses the problem of robust control design for a single-phase uninterruptible power supply by means of state feedback. Sufficient conditions are given for the existence of a robust stabilizing control gain that assures: a) the closed-loop system pole location inside a circle on the left-hand of the complex plane if the load is considered as an uncertain time-invariant or slow time-varying parameter; b) at least the stability of the closed-loop system if the load is considered as an arbitrary time-varying parameter. The robust control conditions are formulated in terms of a set of linear matrix inequalities easily solved using specialized softwares. Design examples and simulation results illustrate the method proposed.

Keywords

closed loop systems; control engineering computing; control system synthesis; linear matrix inequalities; power engineering computing; robust control; state feedback; time-varying systems; uninterruptible power supplies; UPS system; arbitrary time-varying parameter load; closed-loop system pole location; linear matrix inequalities; robust control design; robust stabilizing control gain; robust state feedback control; single-phase uninterruptible power supply; slow time-varying parameter load; softwares; uncertain time-invariant load; Control system synthesis; Control systems; Linear matrix inequalities; Lyapunov method; Robust control; Robust stability; State feedback; Time varying systems; Uncertainty; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE

Print_ISBN

0-7803-7906-3

Type

conf

DOI

10.1109/IECON.2003.1280593

Filename

1280593