A Fast Computation of Wound Rotor Induction Machines Based on Coupled Finite Elements and Circuit Equations under a First Space Harmonic Approximation

摘要

The paper presents a fast method to compute wound rotor induction machines in steady state. Coupled time-harmonic FE-circuit equations are used under a first space harmonic approximation for the air-gap magnetic field. It is shown that only 4 magnetostatic FE computations are necessary to compute the machine performances for a wide range of operating speeds. The performances comparison to a conventional complex magnetodynamic FE analysis shows the effectiveness of the proposed approach.