COMPARATIVE STUDY BASED ON FEM ANALYSIS BETWEEN SQUIRREL CAGE AND WOUND ROTOR OF A THREE-PHASE INDUCTION MOTOR

Autor/autori: Eng. Sorin VLASCEANU, Prof. Eng. Alecsandru SIMION, Assist. Prof. Eng. Leonard LIVADARU, Eng. Florin LAZAR, Eng. Nicolae-Daniel IRIMIA

Rezumat: Lucrarea de fata urmareste o analiza comparativa dpdv a performantelor obtinute de la un motor asincron trifazat cu rotorul in scurtcircuit si unul cu infasurare bobinata pe rotor. Studiul efectuat porneste de la un motor a carui rotor in colivie este inlocuita cu o infasurare bobinata in urma reproiectarii infasurarii rotorice. O atentie deosebita se acorda proiectarii infasurarii rotorice pentru a obtine cupluri ridicate la pornire. Caracteristicile pentru cele doua structuri sunt prezentate comparativ si sunt obtinute prin analiza de camp utilizand software special de calcul.

Cuvinte cheie: masina de inductie, rotor in colivie, rotor bobinat, metoda elementului finit (MEF).

Abstract: The presented paper aims a comparative analysis, from the performance point of view, between a squirrel cage tri-phased induction motor and a wound rotor construction. The study uses as starting point an induction motor with squirrel cage rotor, wich has been replaced with a winding after a design algorithm. Particular attention is given to the design of the rotor winding in order to obtain high starting torque. The characteristics for the two motor types are presented in a comparative manner. This characterics are obtained using field analysis in a special computing software

Keywords: induction machine, squirrel cage rotor, wound rotor, finite element method (FEM).

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