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A new kind of induction motor with compound cage rotor (IMCCR) is proposed in this paper, in which rotor bars are composed of upper parts made of alloy (conductor for electric and magnetic) and lower parts made of cast aluminum. By using FEM, the electromagnetic and thermal fields of IMCCR are analyzed with coupling. The electromagnetic fields of motor operating with locked rotor and striking current...
This work presents the development of a CFD methodology to evaluate the distribution of the airflow around the end winding of an asynchronous motor. This process was assisted by an experimental device that was designed and developed in order to consider a number of geometric simplifications aiming at the validation of the CFD model. The problems of numerical convergence in both steady-state and transient...
For an induction motor that is cooled by an airflow ventilated across the air gap between the rotor and stator, the rotor end-ring and stator end-turn cooling might influence the motor temperatures in the core sections appreciably. Detailed motor thermal modeling is typically required to provide transient rotor temperature distributions for rotor structural analysis and to predict stator temperature...
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