Improving the Torque Prediction of Saturated Automotive Drive Machines by Accurate Representation of Saturated B/H Curves

Publication Type:
Journal Article
IEEE Transactions On Magnetics, 2012, 48 (11), pp. 4630 - 4633
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This paper investigates the importance of modeling steel B/H curves accurately, well into saturation, when simulating induction motors that are run into saturation (such as in variable-speed vehicular drives that use a wide field weakening region). Most steels are only tested just beyond the knee point which is insufficient without correct extrapolation. The results show, for a particular example, a 15% increase in line current and 4.2% reduction in torque when a good extrapolation is used and compared to a poor B/H curve.
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