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Models for induction machines with magnetic saturation of the main flux path

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2 Author(s)
Sullivan, C.R. ; Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA ; Sanders, S.R.

A new nonlinear π model for an induction machine operating in magnetic saturation has been developed. It is based on a magnetic circuit model of a rotor-stator tooth pair, with nonlinear reluctance elements representing the saturation in the rotor and in the stator. The model of a tooth pair is extended to a model of the machine by assuming an infinite number of infinitesimal teeth. The model is compatible with the Blondel-Park transformation. Experimental measurements on a wound-rotor machine validate the new model. Operating conditions for optimal efficiency at high torque levels requiring operation in saturation are computed

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Industry Applications, IEEE Transactions on  (Volume:31 ,  Issue: 4 )