NDLI: Analysis of the Effects Caused by Structural Asymmetries in the Performance of Three-Limb Core Three-Phase Inductive Filters

Content Provider	IEEE Xplore Digital Library
Author	Rodriguez, J.M.C. Orcajo, G.A. Garcia, C.H.R. Melero, M.G. Cabanas, M.F. Gonzalez, F.P.
Copyright Year	1986
Abstract	A considerable number of nonlinear industrial loads employ three-phase inductive filters to reduce their peak currents and mitigate the conduction of harmonic currents into the supply system. In modeling and analysis of this kind of filter, the fact that-for reasons of economy-they consist of a single block where the three electrical phases share the same magnetic core instead of having three single-phase reactors is often overlooked. Since the three windings are coiled in the same plane, the central magnetic limb of the core has a lower magnetic reluctance than do the lateral limbs. Moreover, this undesired effect is increased by the existence of internal magnetic couplings. The above phenomenon, which might, at first sight, be considered negligible, will become noticeable in real electrical facilities because of the particular operating conditions of three-phase inductive filters. The aim of this paper is, thus, to present a new model for three-limb core three-phase inductive filters that includes all the above parasitic effects and to describe its practical application in order to assess the magnitude of the errors produced by traditional models when estimating real filter behavior.
Sponsorship	IEEE Power Engineering Society
Starting Page	600
Ending Page	607
Page Count	8
File Size	462503
File Format	PDF
ISSN	08858969
Volume Number	22
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cause effect analysis Performance analysis Magnetic separation Magnetic cores Electricity supply industry Power harmonic filters Current supplies Magnetic analysis Inductors Couplings voltage unbalance Filter modeling inductive filter pulsewidth modulation (PWM) adjustable speed drives (ASDs) structural asymmetry
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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