Control of a hybrid asymmetric multi-level inverter for competitive medium-voltage industrial drives

Author

Veenstra, Martin ; Rufer, Alfred

Author_Institution

Lab. d´´Electronique Industrielle, Ecole Polytech. Fed. de Lausanne, Switzerland

Volume

1

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

190

Abstract

Hybrid asymmetric multi-level inverters promise significant improvements for medium-voltage industrial drives. Floating sub inverters without feeding can only supply reactive power. An on-line nonlinear model-predictive controller stabilizes their intermediate-circuit voltages in steady-state and during transients, as demonstrated by simulations and measurements. A pre-charge method assures converter start-up without additional equipment.

Keywords

AC motor drives; invertors; nonlinear control systems; predictive control; reactive power; stability; voltage control; competitive medium-voltage industrial drives; converter start-up; floating sub inverters; hybrid asymmetric multi-level inverter control; intermediate-circuit voltages stabilisation; medium-voltage industrial drives; on-line nonlinear model-predictive controller; pre-charge method; reactive power supply; steady-state; transients; Capacitors; Circuits; Electricity supply industry; Industrial control; Inverters; Medium voltage; Power supplies; Reactive power; Topology; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257502

Filename

1257502