A method for determining the local magnetic induction near the cut edge of the ferromagnetic strip

Gmyrek, Zbigniew

doi:10.1016/j.jmmm.2015.12.048

Cited by 5 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, 1992; Loisos and Moses, 2005; Lewis et al. , 2018; Gmyrek, 2016). The destructive method includes the method of placing search coils near the cutting edge by drilling holes in sheets to measure the magnetic flux.…”

Section: Introductionmentioning

confidence: 99%

“…A destructive and a nondestructive method for locally measuring the influence of cutting edges are presented in earlier studies (Nakata et al, 1992;Loisos and Moses, 2005;Lewis et al, 2018;Gmyrek, 2016). The destructive method includes the method of placing search coils near the cutting edge by drilling holes in sheets to measure the magnetic flux.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of a quasi Newton method using Broyden’s update formula and an adjoint method for determining local magnetic material properties of electrical steel sheets

Gschwentner,

Kaltenbacher,

Kaltenbacher

et al. 2024

COMPEL

View full text Add to dashboard Cite

Purpose Performing accurate numerical simulations of electrical drives, the precise knowledge of the local magnetic material properties is of utmost importance. Due to the various manufacturing steps, e.g. heat treatment or cutting techniques, the magnetic material properties can strongly vary locally, and the assumption of homogenized global material parameters is no longer feasible. This paper aims to present the general methodology and two different solution strategies for determining the local magnetic material properties using reference and simulation data. Design/methodology/approach The general methodology combines methods based on measurement, numerical simulation and solving an inverse problem. Therefore, a sensor-actuator system is used to characterize electrical steel sheets locally. Based on the measurement data and results from the finite element simulation, the inverse problem is solved with two different solution strategies. The first one is a quasi Newton method (QNM) using Broyden's update formula to approximate the Jacobian and the second is an adjoint method. For comparison of both methods regarding convergence and efficiency, an artificial example with a linear material model is considered. Findings The QNM and the adjoint method show similar convergence behavior for two different cutting-edge effects. Furthermore, considering a priori information improved the convergence rate. However, no impact on the stability and the remaining error is observed. Originality/value The presented methodology enables a fast and simple determination of the local magnetic material properties of electrical steel sheets without the need for a large number of samples or special preparation procedures.

show abstract

Section: Introductionmentioning

confidence: 99%