A Method for Defining the Mean Path Length of the Epstein Frame

Marketos, P.; Żurek, S.; Moses, Anthony John

doi:10.1109/tmag.2007.894124

Cited by 34 publications

(30 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The double Epstein method [5] is based on the assumption that the flux density in the samples in two different sizes Epstein frames is uniform everywhere apart from near the corners where it deviates from the rolling direction and becomes highly non-uniform. It is also assumed that as long as the corner areas are identical, the flux density distribution and therefore the power losses in the corners of the two Epstein frames will also be identical.…”

Section: Methodsmentioning

confidence: 99%

“…This is mainly due to the lack of standardised power loss measurement techniques regarding distorted excitations, which in turn does not allow steel producers to guarantee power loss values obtained under distorted excitations. This paper presents data showing how the mean path length of the Epstein frame changes when electrical steel is magnetised under different non-sinusoidal excitations using the double Epstein method [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Calculation of the mean path length of the Epstein frame under non-sinusoidal excitations using the double Epstein method

Marketos

Żurek

Moses

2008

Journal of Magnetism and Magnetic Materials

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Calculation of the mean path length of the Epstein frame under non-sinusoidal excitations using the double Epstein method

Marketos

Żurek

Moses

2008

Journal of Magnetism and Magnetic Materials

Self Cite

View full text Add to dashboard Cite

“…In practice the magnetic path length varies with several factors. For example, it drops by 4%-5% in GO steel when and increases by around 3% when is increased from 50 to 400 Hz [33]. This should be taken into account to make the difference between the true (absolute) loss and the measured loss independent of and but, since this is not done in practice for Epstein or SST measurements, care must be applied when assessing the accuracy of predicted losses at different flux densities or magnetizing frequencies.…”

Section: Magnetic Domain Interpretationmentioning

confidence: 99%

Generalization of the Classical Method for Calculating Dynamic Hysteresis Loops in Grain-Oriented Electrical Steels

et al. 2008

View full text Add to dashboard Cite

We have studied the ability of two one-dimensional (1-D) time-stepping models, both based on the concept of magnetic viscosity, to reproduce dynamic loops and losses in grain-oriented (GO) electrical steels under arbitrary magnetization regimes. We found that GO steels (0.3 mm thick) can be modeled quite accurately at magnetizing frequencies up to 200 Hz by a thin sheet representation, which is applied to a bulk material. At higher frequencies, acceptable results can be obtained through a finite-difference solver of a 1-D penetration equation whose applicability to GO steels can be explained in terms of domain wall bowing. Because of the inertial effect introduced by the magnetic viscosity, the average error in the loss prediction is reduced from 40% for the conventional classical method to 5% for the methods we studied. We demonstrated the accuracy of the models using two GO steels whose losses and -characteristics were measured by computer-controlled Epstein and single-sheet testers.

show abstract

“…There is a need for an extension to the measurement function and upgrades of the measurement values, for example, using the Epstein frame to measure the different types of B-H curves (B m -H m and B m -H b ), or when the mean path length of the Epstein depends on many factors and is not a constant value [39,40]. …”

Section: ( D Eddy Current Region) Assigned ( D Eddy Current Region) σmentioning

confidence: 99%

Extended P21-Based Benchmarking

Cheng¹

2016

IJEPE

View full text Add to dashboard Cite

This paper highlights two important aspects of the electromagnetic field modeling and simulation when used for industrial applications, namely the application based benchmarking activities and the magnetic material modeling. It emphasizes the relationship between the two, and briefly reviews the recent progress in extending the TEAM (Testing Electromagnetic Analysis Methods) Problem 21 Family (P21) and the related modeling results, and proposes a new benchmarking project which includes the upgraded benchmark models that can handle extreme excitations, i.e. current sources with a DC bias, as well as multiple harmonics.

show abstract

A Method for Defining the Mean Path Length of the Epstein Frame

Cited by 34 publications

References 3 publications

Calculation of the mean path length of the Epstein frame under non-sinusoidal excitations using the double Epstein method

Calculation of the mean path length of the Epstein frame under non-sinusoidal excitations using the double Epstein method

Generalization of the Classical Method for Calculating Dynamic Hysteresis Loops in Grain-Oriented Electrical Steels

Extended P21-Based Benchmarking

Contact Info

Product

Resources

About