NDLI: Numerical Determination of the Effective Magnetic Path Length of a Single-Sheet Tester

Content Provider	IEEE Xplore Digital Library
Author	Hofmann, M. Kahraman, D. Herzog, H.-G. Hoffmann, M.J.
Copyright Year	1965
Abstract	We describe a numerical method for the correction of the magnetic field strength and power loss values measured by a single-sheet tester (SST) based on the current method. This operation is performed by a reluctance network that yields the effective path length of the SST by determining the parasitic magnetic voltage drops over the yoke, gaps, and parts of the probe underneath the pole faces. In contrast to common magnetic circuit analysis, we enforce the magnetic flux and the magnetomotive force simultaneously and treat the magnetic resistance of the specimen as a degree of freedom. Hereby, we avoid errors due to uncertainties in the description of the B-H characteristic of the specimen and can correct arbitrary working points covering hysteretic and dynamic effects. The validity of this approach is demonstrated on four grades of nonoriented electrical steel sheets. The network is used to determine the integral magnetic path length, which enables a convenient correction of the power loss for arbitrary magnetizations including harmonics.
Sponsorship	IEEE Magnetics Society
Starting Page	929
Ending Page	932
Page Count	4
File Size	862711
File Format	PDF
ISSN	00189464
Volume Number	50
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
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 circuits Magnetic hysteresis Loss measurement Steel Materials Magnetic losses Iron sheet materials Circuit analysis computing finite-element (FE) methods loss measurements magnetic circuits magnetic field measurement magnetic losses
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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