Study of double cage induction motors with different rotor bar materials

This paper consists a study of the influence of specific design parameters on the double-cage induction motor behavior. The study is carried out using FEM analysis. Three double rotor bar induction motors have been simulated and their electromagnetic characteristics are compared to each other. The differences in the three motors´ design are: the first one has a single rotor cage and the other two have double rotor cage with different materials for the upper and inner rotor bars. The simulations performed, offer an insight and comparison between the three motors electromagnetic variables and behavior under the same speed operation, as well as under the same applied mechanical load.