State control of MMC-fed ship propulsion induction machine

Author

Spichartz, M. ; Heising, Cartsten ; Staudt, Volker ; Steimel, Andreas

Author_Institution

Ruhr-Univ. Bochum, Bochum, Germany

fYear

2013

fDate

22-24 April 2013

Firstpage

173

Lastpage

177

Abstract

Multilevel converters are indispensable for ship propulsion motors. The Modular Multilevel Converter allows a nearly unlimited cascading of voltage levels at the same complexity in construction. This allows to minimise unacceptable motor terminal overvoltages and motor insulation stress. A current-oriented control is mandatory for this drive control, because the Modular Multilevel Converter is not of the voltage-impressing converter type. For that reason, a novel state-control approach for induction machines is used to control this drive. The magnetising currents and the stator currents of the machine are the control signals. An overlaid control is used to balance the converter sub-module voltages. The basic ideas of the multivariable control of the introduced drive and the excellent control behaviour of a 17-level Modular Multilevel Converter feeding a 3.9-MW 4.16-kV induction machine are presented.

Keywords

electric current control; induction motor drives; machine control; marine propulsion; multivariable control systems; power convertors; ships; 17-level modular multilevel converter; MMC-fed ship propulsion induction machine; converter submodule voltages; current-oriented control; drive control; magnetising currents; modular multilevel converter; motor insulation stress; motor terminal overvoltage minimization; multivariable control; overlaid control; power 3.9 MW; ship propulsion motors; state control; state-control approach; stator currents; voltage 4.16 kV; voltage-impressing converter type; Converters; Induction machines; Marine vehicles; Propulsion; Stators; Torque; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Ship Technologies Symposium (ESTS), 2013 IEEE

Conference_Location

Arlington, VA

Print_ISBN

978-1-4673-5243-7

Type

conf

DOI

10.1109/ESTS.2013.6523730

Filename

6523730