Algorithms for the computation of the induction motor equivalent circuit parameters - Part II

This paper is the second part of a paper proposing methods and algorithms for the estimation of the induction motor equivalent circuit parameters starting from the geometrical and electrical data generally available after an electromagnetic design. This second part includes an approach for the skin effect determination in arbitrary shape rotor slots, (based on the elementary layer method). In addition, a complete analytical development for the fundamental airgap flux density including magnetic saturation phenomena and no-load characteristics determination is reported. Finally, a comparison between the computed and the measured equivalent circuit parameters for several induction motors is provided and discussed. In Appendix I the concept of the harmonic and average Carter coefficients is provided.