Title :
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
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;
Conference_Titel :
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-2419-9
Electronic_ISBN :
1553-572X
DOI :
10.1109/IECON.2012.6388573
