Equivalent Circuits with Transformer Elements for Eddy Current Rotor Induction Motors Derived from Field Equations I-Sleeve Rotor Motors

Radial flux density and axial and tangential currents in sleeve rotors of polyphase induction motors are analyzed from Maxwell's equations. For particular solutions of field equations, transformer equivalents with constant inductance elements are introduced. Motor characteristics are described by an equivalent circuit of up to four transformers in series. A novel type of leakage inductance is introduced. Analysis of motor characteristics from design specifications is simple.