NDLI: Extraction of low-order non-linear inductor models from a high-order physics-based representation

Content Provider	IEEE Xplore Digital Library
Author	Qu, L. Chapman, P.L.
Copyright Year	1986
Abstract	A method to extract low-order dynamic models of nonlinear magnetic devices from a high-order physics-based model is presented. The model includes saturation, skin effect, and eddy current. The physics-based model is derived from finite-element analysis, using only geometry and materials data. A nonlinear model order reduction method based on the Krylov subspace projection is used to extract the low-order model. A linear system is set up at each interpolation point along a training trajectory. Each linear system is reduced by the corresponding projection matrix. The resulting reduced linear systems are used to approximate the original system within each region, yielding accurate local simulation results. Good global properties are achieved by the use of piecewise simulation and weighting. Simulation results demonstrate that the original, nonlinear high-order system can be represented by a set of connected low-order, piecewise-linear systems with satisfactory agreement. This method can be automated and should provide a foundation for more complicated magnetic devices, such as multiphase coupled inductors, actuators, and rotary machines
Sponsorship	IEEE Power Electronics Society
Starting Page	813
Ending Page	817
Page Count	5
File Size	542563
File Format	PDF
ISSN	08858993
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inductors Linear systems Data mining Nonlinear magnetics Skin effect Eddy currents Solid modeling Finite element methods Magnetic analysis Geometry model order reduction (MOR) Finite element analysis (FEA) inductor Krylov subspace
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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