Identification of Magnetic Properties for Cutting Edge of Electrical Steel Sheets

Timo P. Holopainen, Paavo Rasilo, Antero Arkkio

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)
146 Downloads (Pure)

Abstract

Electrical steel sheets of motors and generators are usually shaped to the final form by punching. The punching and other cutting processes generate large plastic deformations and residual stresses. These are known to deteriorate the magnetic properties of the edge region. However, the characterization of this deterioration in the form of magnetic properties is missing. The main aim of this paper is to propose a method to identify the magnetic properties of the edge region based on experimental results. This approach is demonstrated by using previously presented test results for magnetic properties of rectangular strips. The width of these strips is varied, and thus, the share of the edge region to the whole can be used as a variable. Based on this variation, a simple model is developed and the model parameters fitted to the experimental results. The correspondence between the calculated and experimental results is good.
Original languageEnglish
Pages (from-to)1049 - 1053
Number of pages5
JournalIEEE Transactions on Industry Applications
Volume53
Issue number2
Early online date2016
DOIs
Publication statusPublished - 1 Mar 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • electric machines
  • magnetic losses
  • magnetic materials
  • magnetic properties
  • punching
  • sheet materials
  • sheet metal processing

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