Analysis of Circulating Harmonic Currents in Paralleled Three Level ANPC Inverters using SVM

Conference · Thu Feb 28 23:00:00 EST 2019 · Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition (APEC)

DOI:https://doi.org/10.1109/APEC.2019.8722068· OSTI ID:1560418

Niu, Jiahao ^[1]; Zhang, Zheyu ^[1]; Chen, Ruirui ^[1]; Gui, Handong ^[1]; Wang, Fei ^[2]; Tolbert, Leon ^[2]; Blalock, Benjamin J. ^[2]; Costinett, Daniel ^[2]; Choi, Benjamin ^[3]

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1. The University of Tennessee, Knoxville
2. ORNL
3. NASA Glenn Research Center, Cleveland

In paralleled voltage source inverters (VSI), circulating current has both high frequency and low frequency components, and its spectrum highly depends on the modulation scheme. Previous research has mostly focused on the circulating current suppression for paralleled two-level VSIs. Little literature exists on similar analysis for paralleled three-level VSIs using space vector modulation. A detailed circulating current spectrum on full frequency range has not been well developed. This paper presents an improved analytical model for three-level space vector modulation (SVM), considering the impacts of regularly sampled reference and dead time. Then, circulating harmonic currents are determined across the full frequency range for various interleaving angles of two three-level ANPC inverters. The calculated harmonics are also verified by experimental results.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1560418
• Journal Information: Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition (APEC), Journal Name: Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition (APEC) Vol. 2019; ISSN 1048-2334
• Publisher: IEEE
• Country of Publication: United States
• Language: English