Identification of magnetic model parameters for cutting edge of electrical steel sheets

Timo Holopainen, Paavo Rasilo, Antero Arkkio

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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 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
Title of host publicationXXII International Conference on Electrical Machines, ICEM 2016
PublisherIEEE
Number of pages5
ISBN (Electronic)978-1-5090-2537-4
Publication statusPublished - 4 Sep 2016
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Electrical Machines - Lausanne, Switzerland
Duration: 4 Sep 20167 Sep 2016
Conference number: 22
http://www.icem.cc/2016/

Conference

ConferenceInternational Conference on Electrical Machines
Abbreviated titleICEM
CountrySwitzerland
CityLausanne
Period04/09/201607/09/2016
Internet address

Keywords

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

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