LQR with integral action for the control of variable speed induction generator connected to AC grid

Author

Rocha, R. ; Silvino, Jose L. ; Resende, Paulo

Author_Institution

Dept. of Control & Autom. Eng., Fed. Univ. of Ouro Preto, Morro do Cruzeiro, Brazil

fYear

2012

fDate

25-28 Oct. 2012

Firstpage

1061

Lastpage

1066

Abstract

This paper presents a discrete control system based on LQR with integral action for variable speed generation system connected to AC grid using an AC-DC-AC converter with VSI structure. Two LQ current regulators with integral action control of the flux of active and reactive power in the AC generator and AC line. The indirect field orientation principle is used in order to obtain an efficient and stable operation of the AC generator. An outer feedback loop regulates the DC bus voltage. A satisfactory dynamic performance of the proposed control system is observed in the experimental results.

Keywords

AC-DC power convertors; DC-AC power convertors; asynchronous generators; electric current control; feedback; linear quadratic control; machine vector control; power grids; reactive power control; voltage control; AC generator; AC grid; AC line; AC-DC-AC converter; DC bus voltage; LQ current regulators; LQR; VSI structure; discrete control system; feedback loop; indirect field orientation; integral action control; linear quadratic regulator; reactive power; variable speed generation system; variable speed induction generator control; voltage regulation; Argon; Generators; Harmonic analysis; Modulation; Velocity control; AC-DC-AC converter; control system; indirect field orientation; variable speed generator;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Montreal, QC

ISSN

1553-572X

Print_ISBN

978-1-4673-2419-9

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2012.6388573

Filename

6388573