Modular multilevel converter passivity-based PI control suited for balanced and unbalanced grid conditions

Author

Bergna, Gilbert ; Pirro, Matteo ; Berne, Erik ; Arzande, Amir ; Cabrera, Marta Molinas ; Ortega, Romeo

Author_Institution

Energy Dept., Supelec, Gif-sur-Yvette, France

fYear

2015

fDate

17-19 March 2015

Firstpage

3072

Lastpage

3078

Abstract

MMC Passivity-based PI Controller: A novel nonlinear global tracking controller was proposed by extending the regulation case. It consists in a linear PI that regulates two constructed signals with respect to which the incremental model of the MMC becomes passive. Estimation of x_k: A closed-loop estimator was proposed to estimate the MMC variables in steady state needed as input for the non-linear controller. Such estimator consists on a virtual MMC energy model and both of the differential current reference equations that yielded from mathematical optimization using Lagrange multipliers.

Keywords

PI control; closed loop systems; estimation theory; mathematical programming; nonlinear control systems; power convertors; power grids; power system control; Lagrange multipliers; MMC passivity-based PI control; closed-loop estimator; differential current reference equations; grid conditions; mathematical optimization; modular multilevel converter passivity-based PI control; nonlinear global tracking controller; Asymptotic stability; Capacitors; Converters; Estimation; Mathematical model; Steady-state; Trajectory;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology (ICIT), 2015 IEEE International Conference on

Conference_Location

Seville

Type

conf

DOI

10.1109/ICIT.2015.7125552

Filename

7125552