Numerical Calculation of the Electromagnetic Torque of an Induction Motor with a Hollow Rotor

As a result of multivariate finite element calculations, the dependences of the rated and starting moments of the induction motor were obtained with varying the diameter and perforations number of the hollow rotor. From the obtained dependencies consideration, it follows that rotor's perforations affect the induction motor's mechanical characteristic like a decrease in voltage at the terminals of the stator winding.