Influence of Cutting Process on Magnetic Properties of Electrical Steel

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Aydin, Ugur
dc.contributor.author Salvador, Luca
dc.date.accessioned 2016-11-02T09:18:37Z
dc.date.available 2016-11-02T09:18:37Z
dc.date.issued 2016-10-31
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/23166
dc.description.abstract This thesis provides a quantitative analysis of degradation of magnetic properties due to guillotine and laser cutting in non-oriented electrical steel sheets (M270-50A). Rectangular specimens of different widths are cut by guillotine and laser in order to obtain different rate of degradation in the material. The B-H characteristics and losses on these specimens are measured using a custom made Epstein frame under steady state sinusoidal flux density at various frequencies. Measurements results are used to analyse the change in permeability and iron losses. Total measured iron losses are separated into the classical and hysteresis loss components by using least-squares fitting to the well known Jordan model. A finite element model of a 37 kW induction machine is developed and the magnetic characteristics of the damaged and undamaged materials are implemented to the cut edges and the rest of the core material, respectively. Steady state finite elements simulations on the induction machine are performed using FCSMEK, an in-house finite element solver, in order to analyse the effect of material degradation on the losses. en
dc.format.extent 9 + 66
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Influence of Cutting Process on Magnetic Properties of Electrical Steel en
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.subject.keyword iron loss en
dc.subject.keyword permeability en
dc.subject.keyword laser cutting en
dc.subject.keyword material degradation en
dc.subject.keyword induction motor en
dc.subject.keyword guillotine en
dc.identifier.urn URN:NBN:fi:aalto-201611025267
dc.programme.major Electrical Drives fi
dc.programme.mcode S3016 fi
dc.contributor.supervisor Arkkio, Antero
dc.programme EST fi
dc.location P1 fi


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