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Proposal of Analysis Method for Three-Phase Filter Using Fortescue-Mode S-Parameters

Yoshikazu FUJISHIRO, Takahiko YAMAMOTO, Kohji KOSHIJI

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Summary :

This study proposes a novel method for evaluating the transmission characteristics of a three-phase filter using the “Fortescue-mode S-parameters,” which are S-parameters whose variables are transformed into symmetrical coordinates (i.e., zero-/positive-/negative-phase sequences). The behavior of the filter under three-phase current, including its non-symmetry, can be represented by these S-parameters, without regard to frequency. This paper also describes a methodology for creating modal equivalent circuits that reflect Fortescue-mode S-parameters allowing the effects of circuit components on filter characteristics to be estimated. Thus, this method is useful not only for the measurement and evaluation but also for the analysis and design of a three-phase filter. In addition, the physical interpretation of asymmetrical/symmetrical insertion losses and the conversion method based on Fortescue-mode S-parameters are clarified.

Publication
IEICE TRANSACTIONS on Communications Vol.E97-B No.12 pp.2756-2766
Publication Date
2014/12/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E97.B.2756
Type of Manuscript
PAPER
Category
Electromagnetic Compatibility(EMC)

Authors

Yoshikazu FUJISHIRO
  Tokyo University of Science
Takahiko YAMAMOTO
  Tokyo University of Science
Kohji KOSHIJI
  Tokyo University of Science

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