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Start Over Language english Journal ieee transactions on magnetics Publisher institute of electrical and electronics engineers (ieee)
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1. Design of Electrical Rotating Machines by Associating Deterministic Global Optimization Algorithm With Combinatorial Analytical and Numerical Models

Author

Julien Fontchastagner, Yvan Lefèvre, Frédéric Messine, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Algorithmes Parallèles et Optimisation (IRIT-APO), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Groupe de Recherches en Electrodynamique (LAPLACE-GREM3), and Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3)

Subjects
Energie électrique, Computer science, Inverse problem of design, 0211 other engineering and technologies, 02 engineering and technology, 01 natural sciences, Analytical model, Numerical model, Interval branch and bound algorithm, 0103 physical sciences, Deterministic global optimization, interval branch and bound algorithm, Electrical and Electronic Engineering, Global optimization, finite-element methods, 010302 applied physics, 021103 operations research, Mathematical model, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Extension (predicate logic), Inverse problem, [INFO.INFO-IA]Computer Science [cs]/Computer Aided Engineering, Finite element method, Electronic, Optical and Magnetic Materials, deterministic global optimization, Finite-element methods, Algorithm design, [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], numerical model, Algorithm, inverse problem of design
Abstract

International audience; This paper presents a new methodology of design of electrical rotating machines. The methodology is an extension of previous works of the second author. Indeed, associating combinatorial analytical models with exact global optimization algorithms leads to rational solutions of predesign. These solutions need to be validated by a numerical tool (using a finite-element method) before the expansive phase of hand-making a prototype. Such an automatic numerical tool for computing some characteristic values, such as the torque, was previously developed. The idea of this paper is to extend the exact global optimization algorithm by inserting the direct use of this automatic numerical tool. This new methodology makes it possible to solve design problems more rationally. Some numerical examples validate the usefulness of this new approach.

Published
2007

2. Experimental Study of Iron Losses Generated by a Uniform Rotating Field

Author

A. Bernot, Jean-François Llibre, A. Giraud, Yvan Lefèvre, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), IRT Saint Exupéry - Institut de Recherche Technologique (FRANCE), Laboratoire Plasma et Conversion d'Energie - LAPLACE (Toulouse, France), IRT Saint Exupéry - Institut de Recherche Technologique, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Groupe de Recherches en Electrodynamique (LAPLACE-GREM3), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), and Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)

Subjects
Energie électrique, Electromagnétisme, 02 engineering and technology, Rotational losses, 01 natural sciences, law.invention, Nuclear magnetic resonance, law, Iron losses, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Eddy current, Torque, Electrical and Electronic Engineering, Physics, 010302 applied physics, Squirrel-cage rotor, Eddy currents, Rotating field, 020208 electrical & electronic engineering, [SPI.NRJ]Engineering Sciences [physics]/Electric power, [SPI.PLASMA]Engineering Sciences [physics]/Plasmas, Mechanics, Magnetic hysteresis, Magnetic flux, Electronic, Optical and Magnetic Materials, Magnetic field, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Electromagnetic coil, Plasmas, Excitation
Abstract

International audience; This paper introduces a mock-up with a solid iron cylinder rotating in a fixed excitation frame powered by dc current. A uniform field is created in the rotating cylinder, which is driven by an external motor. The braking torque is measured, allowing the study of iron losses generated by a uniform rotating field. The aim is to advance toward a vector iron loss model that takes into account different magnetization directions and their interdependency. The eddy current losses are the dominant loss source in the mock-up, rendering it easier to model. A standard eddy currents model is proposed. It models well the losses at low and medium magnetic flux density, but lower losses are measured near saturation levels. This could be due to the high thickness to radius ratio changing the eddy current paths near the edges of the rotor, which can be later analyzed by a full 3-D finite-element method analysis. A 2-D finite-element method simulation is performed, which estimates the magnetic flux heterogeneity in the rotor. Several lessons are drawn from this mock-up, which prepares a second version with a higher speed and a longer laminated stack rotor. A higher air gap will decrease the voltage fluctuation in the primary winding, a smaller angular opening of the excitation frame will improve the uniformity of the flux in the rotor.

Published
2017