DC voltage balancing control of large-scale modular multilevel cascade converter

Author

Hong-ming Mei ; Jian-zheng Liu

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

fYear

2013

fDate

22-25 Oct. 2013

Firstpage

1

Lastpage

5

Abstract

The modular multilevel cascade converter is one of the most practical solutions for high-voltage, large-capacity utility applications. As the number of the series connected submodules increases, the DC voltage balancing control becomes difficult. Problems of the conventional balancing method, when used in those large-scale modular multilevel cascade converter, has been analyzed. A new balancing control strategy has been proposed. Comparative experiments have been carried out on a real 35kV/40MVA cascade multilevel converter to verify effectiveness of the presented balancing control scheme.

Keywords

load regulation; power convertors; voltage control; DC voltage balancing control; apparent power 40 MVA; high-voltage utility applications; large-capacity utility applications; large-scale converter; modular multilevel cascade converter; series connected submodules; voltage 35 kV; Capacitors; Frequency modulation; Harmonic analysis; Phase modulation; Reactive power; Voltage control; DC voltage balancing; carrier phase-shift modulation; modular mutilevel cascade converter;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2013 - 2013 IEEE Region 10 Conference (31194)

Conference_Location

Xi´an

ISSN

2159-3442

Print_ISBN

978-1-4799-2825-5

Type

conf

DOI

10.1109/TENCON.2013.6718984

Filename

6718984