Fuzzy phase control of series multicell converters

Author

Gateau, Guillaume ; Maussion, Pascal ; Meynard, Thierry

Author_Institution

Lab. d´´Electrotech. et d´´Electron. Ind., CNRS, Toulouse, France

Volume

3

fYear

1997

fDate

1-5 Jul 1997

Firstpage

1627

Abstract

In this paper the authors propose a control strategy for multicell converters based upon fuzzy logic. The control variables are hereafter not the duty cycles but the phase shifts between the trigger signals of the switches. From a nonexact but complex harmonic model of the system, a rule base has been built in order to provide fuzzy model inversion. After asymptotic stability considerations through a Lyapunov function and on a 4-cell converter, where capacitor voltages natural balance is impossible, the fuzzy controller gives the system a rather dynamic and static behaviour

Keywords

Lyapunov methods; asymptotic stability; fuzzy control; phase control; power convertors; 4-cell converter; Lyapunov function; asymptotic stability; capacitor voltage natural balance; duty cycles; fuzzy logic; fuzzy model inversion; fuzzy phase control; nonexact complex harmonic model; phase shifts; series multicell converters; trigger signals; Asymptotic stability; Capacitors; Control systems; Fuzzy control; Fuzzy logic; Fuzzy systems; Lyapunov method; Phase control; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Fuzzy Systems, 1997., Proceedings of the Sixth IEEE International Conference on

Conference_Location

Barcelona

Print_ISBN

0-7803-3796-4

Type

conf

DOI

10.1109/FUZZY.1997.619784

Filename

619784