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Start Over Author "Tessarolo, Alberto" Journal ieee transactions on energy conversion
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12. Accurate Computation of Multiphase Synchronous Machine Inductances Based on Winding Function Theory

Author

Alberto Tessarolo and Tessarolo, Alberto

Subjects
Engineering, business.product_category, analysi, analysis, Stator, Computation, Energy Engineering and Power Technology, Permanent magnet synchronous generator, law.invention, Quantitative Biology::Subcellular Processes, law, Control theory, Electric machine design, finite element methods, Electrical and Electronic Engineering, Electric machine, business.industry, analytical method, modeling, Finite element method, Inductance, analytical methods, Synchronous motor, business, Air gap (plumbing)
Abstract

An electric machine equipped with n stator phases is characterized by a set of n × n phase inductances as concerns the stator section. In the case of nonuniform air gap, these inductances vary as the rotor moves. For their numerical determination as functions of the rotor position an accurate computation algorithm is proposed in this paper based on winding function theory. For permeance function identification, a numerically efficient method is employed based on the magnetostatic finite-element analysis of only three appropriately simplified machine models. In the presence of a field circuit, computation of mutual inductances among it and stator phases is also covered with the same approach. An extension of the method to permanent-magnet machines is also presented. Results are assessed on a six-phase synchronous generator prototype equipped with either a salient-pole wound-field rotor or with an interior permanent-magnet rotor.

Published
2012

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