Arm-current-based control of modular multilevel converters

Author

Angquist, Lennart ; Antonopoulos, Antonios ; Norrga, Staffan ; Nee, H.-P.

Author_Institution

KTH R. Inst. of Technol., Stockholm, Sweden

fYear

2013

fDate

2-6 Sept. 2013

Firstpage

1

Lastpage

10

Abstract

Inner control of a Modular Multilevel Converter (M2C) based on direct tolerance-band modulation of the arm currents has been studied. This approach is attractive because it allows low switching frequency, directly provides the desired arm-current waveform and enables fast protective actions at the same time as the complexity of the over-all control system is reduced. Issues related to common-mode voltage are discussed and supporting PSCAD simulations are presented together with some results from experiments with a reduced-power prototype converter.

Keywords

electric current control; switching convertors; M2C; PSCAD simulation; arm-current waveform; arm-current-based control; common- mode voltage; direct tolerance-band modulation; modular multilevel converter; reduced-power prototype converter; switching frequency; Capacitors; Modulation; Switches; Switching frequency; Voltage control; Voltage measurement; Converter control; High voltage power converters; Modulation strategy; Multilevel converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE), 2013 15th European Conference on

Conference_Location

Lille

Type

conf

DOI

10.1109/EPE.2013.6631999

Filename

6631999