Nonlinear Control of a Buck Converter feeding a Constant Power Load

Author

Solsona, Jorge A. ; Gomez Jorge, Sebastian ; Busada, Claudio Alberto

Author_Institution

Univ. Nac. del Sur, Bahia Blanca, Argentina

Volume

12

Issue

5

fYear

2014

fDate

Aug. 2014

Firstpage

899

Lastpage

903

Abstract

In this paper a nonlinear control strategy for controlling a dc/dc Buck converter feeding a constant power load is proposed. A feedback controller is combined with a feedforward strategy. A nonlinear reduced order observer is used for estimating the value of the power load and its time derivative. These estimated values are fed forward to the nonlinear feedback controller whose design is based on feedback linearization method. The proposed controller is tested via simulations and also, experimental results are presented.

Keywords

DC-DC power convertors; feedback; feedforward; linearisation techniques; nonlinear control systems; observers; reduced order systems; DC-DC buck converter; buck converter; constant power load; feedback linearization method; feedforward strategy; nonlinear feedback controller; nonlinear reduced order observer; power load value estimation; time derivative; Capacitors; Conferences; Digital signal processing; Feedforward neural networks; Irrigation; Microgrids; Power electronics; CPL; feedforward compen-sation; nonlinear control;

fLanguage

English

Journal_Title

Latin America Transactions, IEEE (Revista IEEE America Latina)

Publisher

ieee

ISSN

1548-0992

Type

jour

DOI

10.1109/TLA.2014.6872903

Filename

6872903