DocumentCode
2636647
Title
Capacitor voltage balancing in modular multilevel converters
Author
Korn, A.J. ; Winkelnkemper, M. ; Steimer, Peter ; Kolar, Johann Walter
Author_Institution
Power Electron. & MVDrives, ABB Switzerland Ltd., Turgi, Switzerland
fYear
2012
fDate
27-29 March 2012
Firstpage
1
Lastpage
5
Abstract
A universal capacitor voltage control method for converters built from series connected modules is presented. It fully exploits both the circulating currents and the common-mode voltage without affecting the phase current control. The controllability of the capacitor voltages in various such converters is investigated. It is found that the nonzero branch currents and terminal voltages are necessary for capacitor voltage balancing.
Keywords
capacitors; electric current control; modules; phase control; power convertors; voltage control; capacitor voltage balancing; circulating current; common-mode voltage; modular multilevel converter; nonzero branch current; phase current control; series connected module; universal capacitor voltage control method; Modular Multilevel Converter Control;
fLanguage
English
Publisher
iet
Conference_Titel
Power Electronics, Machines and Drives (PEMD 2012), 6th IET International Conference on
Conference_Location
Bristol
Electronic_ISBN
978-1-84919-616-1
Type
conf
DOI
10.1049/cp.2012.0158
Filename
6242007
Link To Document