# Analysis of induction motors based on the numerical solution of the magnetic field and circuit equations

 dc.contributor Aalto-yliopisto fi dc.contributor Aalto University en dc.contributor.author Arkkio, Antero dc.date.accessioned 2012-02-10T09:13:19Z dc.date.available 2012-02-10T09:13:19Z dc.date.issued 1987-12-18 dc.identifier.isbn 951-22-6076-X dc.identifier.issn 0001-6845 dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2158 dc.description.abstract A method for the analysis of induction motors is presented. The analysis is based on the combined solution of the magnetic field equations and the circuit equations of the windings. The equations are discretized by the finite element method. The magnetic field is assumed to be two-dimensional. The three-dimensional features i.e. the skew of the rotor slots and the end-region fields are taken into account within the two-dimensional formulation. The general time-dependence of the field and the motion of the rotor are modelled correctly in a step-by-step solution. The amount of computation is reduced significantly if the time-dependence is assumed to be sinusoidal and phasor quantities are used in the solution. The method is applied to the calculation of a cage rotor motor and of a solid rotor motor. The sinusoidal approximation gives good results in the computation of steady-state locked-rotor quantities, but it does not model the motion of the rotor properly. The step-by-step method is used for computing machine quantities in steady and transient states. For instance the operation of the solid rotor motor supplied by a static frequency converter is simulated. The results obtained by the method agree well with the measured ones. en dc.format.extent 97 dc.format.mimetype application/pdf dc.language.iso en en dc.publisher Helsinki University of Technology en dc.publisher Teknillinen korkeakoulu fi dc.relation.ispartofseries Acta polytechnica Scandinavica. El, Electrical engineering series en dc.relation.ispartofseries 59 en dc.subject.other Electrical engineering en dc.title Analysis of induction motors based on the numerical solution of the magnetic field and circuit equations en dc.type G4 Monografiaväitöskirja fi dc.description.version reviewed en dc.contributor.department Department of Electrical and Communications Engineering en dc.contributor.department Sähkö- ja tietoliikennetekniikan osasto fi dc.subject.keyword induction motors en dc.subject.keyword finite element analysis en dc.identifier.urn urn:nbn:fi:tkk-001267 dc.type.dcmitype text en dc.type.ontasot Väitöskirja (monografia) fi dc.type.ontasot Doctoral dissertation (monograph) en dc.contributor.lab Laboratory of Electromechanics en dc.contributor.lab Sähkömekaniikan laboratorio fi
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