NDLI: A new multilevel converter with multi-winding medium-frequency transformer

Content Provider	IEEE Xplore Digital Library
Author	Zedong Zheng Zhigang Gao Yongdong Li Chunyang Gu Lie Xu
Copyright Year	2011
Description	Author affiliation: Dept. Electrical Engineering, Tsinghua University, Beijing, China (Zedong Zheng; Zhigang Gao; Yongdong Li; Chunyang Gu; Lie Xu)
Abstract	In this paper, a novel multi-level converter was proposed where an isolated DC-DC converter with a multi-winding medium frequency transformer is used to realize the energy equalization within different cells. A cascaded H-bridge rectifier is directly connected to the AC grid and the normal input transformer was not necessary. Several separate DC buses can be produced by the cascaded H-bridge rectifier which can be inverted to medium frequency AC voltages and feed the primary windings of the multi-winding medium frequency transformer. On the secondary windings, several isolated DC buses will be produced from the output by the transformer. In this paper, the stability of the proposed converter and the equalization of the DC bus were analyzed. The control strategy of the whole system was studied and verified by some simulation and experiments.
Starting Page	1
Ending Page	8
File Size	251270
Page Count	8
File Format	PDF
ISBN	9781612841670
e-ISBN	9789075815146
e-ISBN	9789075815153
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-30
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	EPE ASSOCIATION
Subject Keyword	Windings Capacitors Rectifiers multilevel converter Frequency conversion Inverters medium frequency converter multi-windings medium frequency transformer Voltage control cascaded H-bridge rectifier Equivalent circuits voltage balance
Content Type	Text
Resource Type	Article

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