Large-signal stability in high-order switching converters

Author

Leyva, R. ; Queinnec, I. ; Tarbouriech, S. ; Alonso, C. ; Martinez-Salamero, L.

Author_Institution

Departament d´´Enginyeria Electron., Universitat Rovira i Virgili, Tarragona, Spain

Volume

1

fYear

2004

fDate

June 30 2004-July 2 2004

Firstpage

59

Abstract

This article presents the application of a new passivity-based control law that stabilizes the output voltage of a fourth-order DC-DC converter. This control law assures large-signal stability, provides zero steady-state error despite uncertainty in converter parameters and has enough degree of freedom to satisfy the usual transient specifications. This new integral control is derived in three steps. First, a static law is obtained. Second, a positive semi-definite storage function is studied to guarantee zero steady-state error of the output voltage. Finally, the storage functions of the first two steps are combined to derive the new control law for high order DC-DC converters.

Keywords

DC-DC power convertors; nonlinear control systems; stability; switching convertors; DC-DC converter; high-order switching converters; large-signal stability; passivity-based control; positive semidefinite storage function; static law; zero steady-state error;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2004. Proceedings of the 2004

Conference_Location

Boston, MA, USA

ISSN

0743-1619

Print_ISBN

0-7803-8335-4

Type

conf

Filename

1383579