DocumentCode :
69635
Title :
Space vector modulation strategy for neutral-point voltage balancing in three-level inverter systems
Author :
Ui-Min Choi ; Lee, K.B.
Author_Institution :
Department of Energy Technology, Aalborg University, Aalborg, Denmark
Volume :
6
Issue :
7
fYear :
2013
fDate :
Aug-13
Firstpage :
1390
Lastpage :
1398
Abstract :
This study proposes a space vector modulation (SVM) strategy to balance the neutral-point voltage of three-level inverter systems. The proposed method is implemented by combining conventional symmetric SVM with nearest three-vector (NTV) modulation. The conventional SVM is converted to NTV modulation by properly adding or subtracting a minimum gate-on time. In addition, using this method, the switching frequency is reduced and a decrease of switching loss would be yielded. The neutral-point voltage is balanced by the proposed SVM strategy without additional hardware or complex calculations. Simulation and experimental results are shown to verify the validity and feasibility of the proposed SVM strategy.
fLanguage :
English
Journal_Title :
Power Electronics, IET
Publisher :
iet
ISSN :
1755-4535
Type :
jour
DOI :
10.1049/iet-pel.2012.0597
Filename :
6574643
Link To Document :
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