NDLI: A multilevel voltage-source converter system with balanced DC voltages

Content Provider	IEEE Xplore Digital Library
Author	Fang Zheng Peng Jih-Sheng Lai McKeever, J. VanCoevering, J.
Copyright Year	1995
Description	Author affiliation: Tennessee Univ., Knoxville, TN, USA (Fang Zheng Peng)
Abstract	In this paper, a multilevel voltage-source converter system is proposed for high-voltage, high-power applications such as back-to-back interconnection of power systems, large induction motor drives, and electrical traction drives. Multilevel voltage-source converters have a voltage unbalance problem in the DC capacitors. The problem may be solved by use of additional voltage regulators or separate DC sources. However, these solutions are found not to be practicable for most applications. The proposed converter system can solve the voltage unbalance problem of the conventional multilevel voltage-source converters, without using any additional voltage balance circuits or separate voltage sources. The mechanism of the voltage unbalance problem is analyzed theoretically in this paper. The voltage unbalance problem of multilevel converters in the DC capacitors has been solved by the proposed internal connections of the AC/DC and DC/AC converters. The validity of the new converter system is demonstrated by simulation and experiment.
Starting Page	1144
Ending Page	1150
File Size	537183
Page Count	7
File Format	PDF
ISBN	0780327306
DOI	10.1109/PESC.1995.474959
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-18
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage Capacitors Regulators Transformers Power system interconnection Power system simulation Power system dynamics Pulse width modulation converters Switching converters Rectifiers
Content Type	Text
Resource Type	Article

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