Electromagnetic fields in solid-rotor induction motor

The most elementary type of rotor for the polyphase induction machine is the solid-iron rotor, which offers advantages in ease of manufacture, high torque per ampere at standstill, withstanding high rotational stresses, and operating in unusual environments. Since conventional induction-machine theory has proven inadequate for such machines, the need has arisen for improved methods of investigation. It is the purpose of this paper to present an approximate three-dimensional nonlinear numerical analysis for the solid-rotor induction motor, based on magnetostatic assumptions and finite-difference iterative techniques.