Extended progress in TEAM Problem 21 Family

Abstract

Purpose -The purpose of the paper is to give a review of TEAM Problem 21, focus on its extended progress in engineering-oriented developments, and report the new benchmarking activity undertaken by the authors. Design/methodology/approach -Testing electromagnetic analysis methods; verify computation models; detail the field behavior of typical magnetic structure; benefit to large-scale numerical modeling. Findings -The calculated results of power loss and magnetic flux for all the member models agree well with the measured ones. The updated Problem 21 Family can now be used to model the saturation effect in the magnetic plate or the lamination by increasing the exciting currents. The new member model P21 d -M allows further detailed examination of the electromagnetic behavior inside laminated sheets. The variation of both the iron loss and the magnetic flux with the excitation patterns and magnetic property data can be investigated inside the laminated sheets and the magnetic plate. Originality/value -In order to model the possible saturation level of magnetic steel using Ar-V-Ar or T-V solvers, the exciting currents are increased from 10 to 50 A. In order to model the iron loss and magnetic flux densities inside the laminated sheets, a very simplified model, P21 d -M of Problem 21 Family as shown in Figure 2, has been proposed.

Extended P21-Based Benchmarking

“…A number of P21-based benchmarking results have been presented by the authors and other researchers worldwide [4]. A summarized loss calculation results of Problem 21 Family is shown in Fig.…”

“…The detailed modeling of the stray field loss generated in different components and the electromagnetic field distributions are helpful in improving the product design. The satisfied results of eddy current losses in non-magnetic steel can be achieved using different 3-D analysis methods based on different potential sets, even with coarse mesh in non-magnetic components, but 2-D results is not available [4,9,33].…”

“…Both the iron loss and magnetic field inside the GO silicon steel lamination with different excitation patterns, and the additional iron loss induced by normal magnetic flux are detailed [4][5][6].…”

“…Meanwhile, the IEEE Standard for validation of computational electromagnetics computer modeling and simulations has also been issued [2]. The authors have devoted a lot of their work to the engineering-oriented TEAM activities for many years [3][4][5][6][7][8][9][10][11][12][13][14][15], have proposed an engineering-oriented benchmark family of problems, Problem 21[1, 3,4], and have updated it three times since 1993, which has been of interest to many scientists and engineers up to now.…”

Magnetic Loss Inside Solid and Laminated Components under Extreme Excitations

“…The engineering-oriented TEAM Problem 21 family, with a great deal of industrial involvement, is well established and has evolved significantly over time [13,15,16]. It is still being improved to deal with modeling and simulation under extreme excitations, making it very useful for both the development and the validation of more efficient analysis methods.…”