Finite element analysis of cage induction motors fed by static frequency converters

Author

Arkkio, A.

Author_Institution

Lab. of Electromech., Helsinki Univ. of Technol., Espoo, Finland

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

551

Lastpage

554

Abstract

A calculation of induction motors based on the finite-element analysis of the magnetic field is presented. The field is assumed to be two-dimensional, and the time dependence of the field and the motion of the rotor are modelled by the Crank-Nicholson time-stepping method. The nonsinusoidal voltage supplied by the frequency converter is imposed on the formulation through the circuit equations of the winding. The method was tested using the properties of a 15-kW cage induction motor. The results obtained for the current and torque show good agreement with the measured results. The method was also used successfully for computing the resistive losses of the rotor winding and for analyzing the effect of the bar shape on the resistive losses

Keywords

finite element analysis; frequency convertors; machine theory; magnetic fields; squirrel cage motors; 15 kW; Crank-Nicholson time-stepping method; cage induction motors; circuit equations; finite-element analysis; magnetic field; nonsinusoidal voltage; resistive losses; static frequency converters; time dependence; winding; Circuit testing; Current measurement; Equations; Finite element methods; Frequency conversion; Induction motors; Magnetic analysis; Magnetic fields; Rotors; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106376

Filename

106376