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Content Provider | IEEE Xplore Digital Library |
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Author | Ilves, K. Norrga, S. Harnefors, L. Nee, H. |
Copyright Year | 2012 |
Description | Author affiliation: KTH, Royal Institute of Technology, Stockholm, Sweden (Ilves, K.; Norrga, S.; Harnefors, L.; Nee, H.) |
Abstract | In a modular multilevel converter the circulating current that flows through each phase leg can affect the performance and efficiency of the converter. If measures are not taken to control the circulating current, it will inevitably contain a second-order harmonic. There are various solutions for eliminating this second-order harmonic. One of the proposed solutions includes a main-circuit filter that is tuned to block the second-order harmonic in the circulating current. This paper presents an analytical relation between the ac-side current and the higher-order harmonics in the circulating current when such a filter is used. It is found that when third-order harmonic injection is used, a large fourth-order harmonic component may appear in the circulating current. This is verified by simulating a 32-MVA converter designed for grid connected applications. The simulation results support the conclusion that it is essential to take this effect into consideration when designing the main-circuit filter. |
Starting Page | 1 |
Ending Page | 6 |
File Size | 353470 |
Page Count | 6 |
File Format | |
ISBN | 9781467315906 |
e-ISBN | 9781467315913 |
e-ISBN | 9781467315890 |
DOI | 10.1109/SSD.2012.6197915 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2012-03-20 |
Publisher Place | Germany |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Integrated circuits Inductance Capacitors Modulation Harmonic analysis Capacitance Power harmonic filters |
Content Type | Text |
Resource Type | Article |
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