Experimental Assessment and Modeling of Losses in Interlocked Magnetic Cores

Vaschetto, Silvio; Gmyrek, Zbigniew; Dobler, Christoph; Bramerdorfer, Gerd; Cavagnino, Andrea

doi:10.1109/tia.2022.3163073

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…The ring specimen is the most time-consuming method due to the closed geometry [11]. The benefit of cylindrical ring cores is that they offer a continuous, air-gap-free circumferential magnetic path.…”

Section: Electrical Machines Core Lossesmentioning

confidence: 99%

“…The conductive paths of the eddy currents are considered and the eddy current and hysteresis losses in the degraded areas of the magnetic material can be calculated in the FEM model. In [11,92], a 3-D FEM model is developed to accurately investigate the effect of interlocking on magnetic properties of ESLs. The modified model can consider the material degradation around the dowels through layered regions assigned with different magnetic material characteristics.…”

Section: Interlocking Processmentioning

confidence: 99%

“…The manufacturing of ESLs into an electric machine consists of four main steps: cutting, joining, stress relief annealing, and shrink fitting. Each one of these steps affects the magnetic quality of the material and often locally increases both the static and dynamic hysteresis losses near the cut edges, resulting in a reduction in the performance compared to simulations [7][8][9][10][11]. It is beneficial to consider these manufacturing effects in the design stage to eliminate the probability of failure in mass production.…”

Section: Introductionmentioning

confidence: 99%

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A Review on the Effect of Electrical Steel Manufacturing Processes on the Performance of Electric Machines

Mahmouditabar,

Baker

2023

Energies

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The manufacturing processing of Electrical Steel Laminations (ESLs) for electric machines comprises cutting, stacking, and housing techniques which can result in plastic deformation and residual stress in the soft magnetic material. These manufacturing processes result in decreasing the magnetic quality and a local increase in both the static and dynamic hysteresis losses near the cut edges and consequently a reduction in the performance of the designed motor. The iron losses resulting from cutting can vary by a factor of two or more depending on geometrical, material, and processing parameters as well as the magnetic field strength. It is advantageous to consider these manufacturing effects in the design stage to reduce the probability of underperforming mass production. In this paper, the manufacturing processes of ESLs and their modelling methods are comprehensively surveyed. The gaps in scientific understanding and the research need for the expansion of accurate modelling of the cutting and joining of ESLs are subsequently discussed.

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Section: Electrical Machines Core Lossesmentioning

confidence: 99%

Section: Interlocking Processmentioning

confidence: 99%