Assoc. Prof. Eng. Leonard Livadaru, PhD, Prof. Eng. Alecsandru Simion, PhD, Assist. Prof. Eng. Adrian Munteanu, PhD, Eng. Marcian Sandru, Eng. Ovidiu Dabija, PhD Student, Prof. Eng. Margareta Cojan, PhD
Rezumat
Lucrarea prezinta constructia si simularea functionarii unui motor asincron de 630 kW a carui proiectare a luat
in consideratie doua conditii restrictive privind regimul de pornire si anume: curent de pornire scazut (Ip/In1). Solutia propusa consta in doua colivii rotorice distincte, una din cupru iar cea de
a doua din fier conductor electric. In plus, colivia din cupru are o constructie particulara atat in crestaturi cat si la
extremitati. Simularea functionarii foloseste un pachet de programe bazat pe metoda elementului finit.
Cuvinte cheie: motor asincron de putere mareconditii de pornire specialedoua colivii rotoricesimulare MEF
Abstract
The paper presents design and simulation of a high-power induction motor of 630 kW which has to fulfill some
severe start-up constraints, that is a low starting current (Is/Ir1). The
proposed solution uses two distinct rotor cages made of copper and conductive iron respectively. Additionally, the copper
cage has a particular construction of the bars both inside the slots and at their extremities. The simulation of the operation
uses a software package based on finite element method.
Keywords: high power induction motorstart-up constraintstwo squirrel cages of distinct materialsFEM simulation
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