Structured H∞ design method of PI controller for grid feeding connected voltage source inverter

Author

Bouzid, Allal M. ; Sicard, P. ; Cheriti, A. ; Bouhamida, M. ; Benghanem, M.

Author_Institution

Dept. of Electr. & Comput. Eng., UQTR, Trois-Rivières, QC, Canada

fYear

2015

fDate

25-27 May 2015

Firstpage

1

Lastpage

6

Abstract

This paper presents a new Structured H_∞ Design Method of proportional-integral (PI) controllers for Grid Feeding Connected Voltage Source Converters, based on MATLAB tools for tuning linear control systems in the frequency domain. The study consists in elaborating optimization of an H_∞ robust control strategy for a Voltage Source Inverter (VSI) connected to the grid through a LCL filter. The PI controller parameters are tuned using hinfstruct optimization function from the MATLAB® Robust Control Toolbox. A synchronous reference frame PI regulation strategy is used for the grid current control loop. The design of PI is validated by simulations in MATLAB®/Simulink™ and the Simulation results prove the correctness and validity of the proposed control. The robust stability and performance of the closed-loop system are analyzed to illustrate the capabilities of the new technique.

Keywords

H^∞ control; LC circuits; PI control; closed loop systems; electric current control; filters; invertors; linear systems; power grids; robust control; synchronisation; tuning; H infinity robust control strategy; LCL filter; MATLAB Robust Control Toolbox; MATLAB-Simulink; PI controller; VSI; closed-loop system; frequency domain; grid current control loop; grid feeding; hinfstruct optimization; proportional-integral controllers; robust stability; structured H infinity design method; structured H∞ design method; synchronous reference frame PI regulation strategy; tuning linear control systems; voltage source inverter; Control systems; Inverters; Optimization; Power harmonic filters; Reactive power; Sensitivity; Voltage control; Distributed generation; Grid feeding; H∞ control; Hinfstruct; PI controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Engineering & Information Technology (CEIT), 2015 3rd International Conference on

Conference_Location

Tlemcen

Type

conf

DOI

10.1109/CEIT.2015.7233086

Filename

7233086