Magnetic fields in nonlinear anisotropic grain-oriented iron-sheet

Dedulle, Jean-Marc; Meunier, G.; Foggia, Albert; Sabonnadière, Jean‐Claude; Shen, D.

doi:10.1109/20.106369

Cited by 29 publications

(16 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the work today is focused on a new modelling of the wound magnetic cores by a bulk model considering an apparent anisotropy in BðHÞ law. An elliptic permeability model could be a simple an convenient way to achieve this [3].…”

Section: Conclusion and Future Developmentsmentioning

confidence: 99%

Effects of magnetic core geometry on false detection in residual current sensor

Colin

Chillet

Kedous‐Lebouc

et al. 2006

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

Under high-supply current, residual circuit breakers are subject to abnormal tripping, caused by false residual currents. Geometric or magnetic anomalies in the circuit breaker ring core seem to be responsible for these abnormal currents. This paper studies a few anomalies (spiral shape effect, conductor eccentricity, lamination effect) and calculates different contributions using the finite element simulations. The results show that the ring core, made of thin wound magnetic tape, is particularly sensitive to primary conductor eccentricity. r

show abstract

Section: Conclusion and Future Developmentsmentioning

confidence: 99%

Effects of magnetic core geometry on false detection in residual current sensor

Colin

Chillet

Kedous‐Lebouc

et al. 2006

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

show abstract

“…The first includes the problems where the core magnetic fluxes are known [22]- [29]. Such formulations are suitable for analysis of the field distribution only in ferromagnetic cores; therefore, they are not able to evaluate leakage fluxes or account for the tank or magnetic shield influences.…”

Section: B Fem Analysismentioning

confidence: 99%

“…In order to reduce costs, labor, and assembling time, the investigations of design optimization are generally done on Manuscript received August 7, 1996; revised January 29,1997 down-scaled model cores. Interesting conclusions and suggestions were mentioned in many papers with regard to the joint models [4], [6]- [9], optimum overlap [8]-[ 121, number of laminations per stagger layer [8], [ll], and the core shape (aspect ratio) [5], [8], [lo].…”

Section: A Experimental Studiesmentioning

confidence: 99%

Anisotropy in three-phase transformer circuit model

Elleuch

Poloujadoff²

1997

IEEE Trans. Magn.

View full text Add to dashboard Cite

Abstruct-In this paper, an important discussion of transformer design and modeling is given. Afterwards, the anisotropy effects of the transformer laminations have been stressed in light of the investigation of a three-phase three-limb transformer Tjoint. Three simple T-joint modeling schemes accounting for the lamination anisotropy are proposed. The fundamental result is that the flux lines remain almost parallel to the rolling direction (RD), except in a small area around the T-joint. Therefore, transformer yokes and limbs have been divided into longitudinal elements according to the RD. Reluctances related to these elements are connected according to the magnetic circuit coupling and yield a new transformer circuit model. A good agreement is obtained between computed and measured transients currents. Furthermore, the new transformer model enables some localized analysis. The computed localized fluxes and loci of flux density vectors near to the T-joint exhibit a satisfactory agreement with many results based on FEM or experimental investigations.Zndex Terms-Grain-oriented steels, transformer.

show abstract

“…Different approaches which allow us to take into account the anisotropic properties of the dynamo sheets are presented in scientific papers, e.g. the so-called elliptical model of the magnetic anisotropy [10] and the model based on the co-energy density are described in [11], however, these proposals refer to non-hysteresis materials. The magnetic anisotropy of the dynamo sheets can also be considered using the reluctivity or permeability tensor [12].…”

Section: Calculation Algorithm With Taking Into Account Sheet Texturesmentioning

confidence: 99%

Calculations of magnetic field in dynamo sheets taking into account their texture

2017

View full text Add to dashboard Cite

Abstract:Magnetic measurements have shown that the most dynamo steel sheets have certain anisotropic properties, which are due to the presence of textures in these sheets. These anisotropic properties have been taken into account usually in a simplified way assuming that iron particles of the dynamo sheets have only one axis of the easy magnetization. In the proposed approach, these particles are treated as grains which have three axes of the easy magnetization, and therefore the magnetization processes can be considered along each of these axes. These processes depend on the actual value and on the direction of the field strength and also on textures occurring in the given dynamo sheet. A method which allows calculations of the field distribution as a function of the assumed changes of external currents is described in this paper.

show abstract

Magnetic fields in nonlinear anisotropic grain-oriented iron-sheet

Cited by 29 publications

References 2 publications

Effects of magnetic core geometry on false detection in residual current sensor

Effects of magnetic core geometry on false detection in residual current sensor

Anisotropy in three-phase transformer circuit model

Calculations of magnetic field in dynamo sheets taking into account their texture

Contact Info

Product

Resources

About