DocumentCode
1161590
Title
Natural balancing of series-stacked power quality conditioners
Author
Mouton, Hd.T. ; Enslin, Johan H R ; Akagi, Hirofumi
Author_Institution
Dept. of Electr. & Electron. Eng., Univ. of Stellenbosch, Matieland, South Africa
Volume
18
Issue
1
fYear
2003
fDate
1/1/2003 12:00:00 AM
Firstpage
198
Lastpage
207
Abstract
This paper develops a systematic and mathematically formal study of the balancing theory of series-stacked multilevel converters. It is shown that the DC bus voltages of these converters balance naturally, provided that the switching frequency is chosen high enough. Two balancing mechanisms, one associated with losses and the other with the load impedance, are identified. A single phase of a 2 MVA series-stacked power quality device was constructed and the theoretical results were verified experimentally.
Keywords
electric impedance; losses; power convertors; power supply quality; 2 MVA; 700 kVA; DC bus voltages; load impedance; losses; multilevel converter; natural balancing; series-injection device; series-stacked converter; series-stacked power quality conditioners; Capacitors; Clamps; Diodes; Impedance; Power quality; Switches; Switching converters; Switching frequency; Topology; Voltage;
fLanguage
English
Journal_Title
Power Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0885-8993
Type
jour
DOI
10.1109/TPEL.2002.807148
Filename
1187339
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