NDLI: Novel Zero-Sequence Blocking Transformer (ZSBT) Using Three Single-Phase Transformers

Content Provider	IEEE Xplore Digital Library
Author	Laka, A. Barrena, J.A. Chivite-Zabalza, J. Vidal, M.A.R. Calvo, G.
Copyright Year	1986
Abstract	Zero-sequence blocking transformers (ZSBTs), used to block the zero-sequence components that are present in a three-phase system, are commonly built winding the three phases around the same core limb. They are difficult to construct, especially in high-power applications that use large cross-sectional cables, as they require a symmetrical winding distribution for not to produce any flux for positive- and negative-sequence components. This paper presents a novel ZSBT configuration using three single-phase transformers. Although slightly greater in size, they can be easily wound, even when thick cables are used. Moreover, the proposed topology can be used as a simulation model of any ZSBT configuration, where core losses and magnetic saturation of the core are included by connecting a single inductor to the secondary windings of the transformers. This paper provides full details of the circuit and is supported by simulation and experimental results of the proposed ZSBT.
Sponsorship	IEEE Power Engineering Society
Starting Page	234
Ending Page	242
Page Count	9
File Size	1350852
File Format	PDF
ISSN	08858969
Volume Number	28
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic cores Windings Inductance Saturation magnetization Phase transformers Circuit faults Impedance zero sequence AC–DC power converters blocking transformer magnetic flux power harmonic filters
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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