Sensitivity analysis of rotor parameters in solid rotor induction machine

Solid Rotor Induction Machines (SRIM) gained lot of interesting in the last decades due to the increasing demand for high speed drives. The low manufacturing cost, the rotor robustness and the capability operating in of harsh environments comes along with the drawbacks of difficult design process, necessity of multi-physics analysis and poor power factor. The single phase lumped parameter equivalent circuit is widely adopted for design and analysis purposes. The impact of the solid rotor material properties as saturation flux density, relative permeability and electrical resistivity are discussed in this work for what concerns mainly the rotor resistance and rotor leakage inductance. Finite Element simulations are performed to determine the equivalent circuit parameters dependencies on the solid material selected for the rotor structure.