GRUCAD EEL CTC UFSC

Florianópolis, Brazil

GRUCAD EEL CTC UFSC

Florianópolis, Brazil
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Padilha J.B.,GRUCAD EEL CTC UFSC | Kuo-Peng P.,GRUCAD EEL CTC UFSC | Sadowski N.,GRUCAD EEL CTC UFSC | Leite J.V.,GRUCAD EEL CTC UFSC | Batistela N.J.,GRUCAD EEL CTC UFSC
Journal of Magnetism and Magnetic Materials | Year: 2017

This work points out the origin of the convergence problem when the Jiles-Atherton hysteresis model is associated with the finite elements method (FEM) to analyze electromagnetic devices. To overcome this problem, a restriction is proposed and applied in the classical approach for the determination of the Jiles-Atherton hysteresis model parameters process. The presented methodology considers the inverse model, where the magnetic induction is the input variable and the magnetic field is the output variable. © 2017 Elsevier B.V.


Schlegel J.P.,GRUCAD EEL CTC UFSC | Sadowski N.,GRUCAD EEL CTC UFSC | Batistela N.J.,GRUCAD EEL CTC UFSC | Iamamura B.A.T.,GRUCAD EEL CTC UFSC | And 2 more authors.
IEEE Transactions on Magnetics | Year: 2012

A new designed core tester and its feeding and control devices are presented in this paper. With this workbench, mounted single phase induction motor stators can be magnetically fed with controlled induction waveforms in order to evaluate their quality in the industrial environment. As the measured data involves the machine stator as well as the core of the testing apparatus, Finite Element and iron losses modeling are employed in this paper in order to distinguish the losses of the stator under test and the losses of measurement device itself. Therefore, the main goals of this paper are to propose a new tester design as well as a numerical way allowing the separation of the losses in the stator under test and the losses inherent to the tester itself. © 2012 IEEE.


Rigoni M.,GRUCAD EEL CTC UFSC | Sadowski N.,GRUCAD EEL CTC UFSC | Batistela N.J.,GRUCAD EEL CTC UFSC | Bastos J.P.A.,GRUCAD EEL CTC UFSC | And 2 more authors.
Journal of Microwaves, Optoelectronics and Electromagnetic Applications | Year: 2012

This paper presents measured data and electromagnetic FEM field calculations as techniques for detecting and analyzing eccentricity in three-phase induction motors. Also it presents experimental results for detecting broken bars in induction motor rotors. A search-coil is used as magnetic field sensor to measure the stray magnetic flux outside the motor. It is a totally non-invasive method. © 2012 SBMO/SBMag.


Le-Duc T.,CNRS Grenoble Electrical Engineering Lab | Meunier G.,CNRS Grenoble Electrical Engineering Lab | Chadebec O.,CNRS Grenoble Electrical Engineering Lab | Guichon J.-M.,CNRS Grenoble Electrical Engineering Lab | Bastos J.P.A.,GRUCAD EEL CTC UFSC
IEEE Transactions on Magnetics | Year: 2013

In order to compute electromagnetic problems in presence of thin conductive and magnetic shells, a new integral formulation is proposed. Based on the principle of shell element, the formulation is general and enables the modeling of various problems for any skin-depth, avoiding the air region meshing. The formulation is validated thanks to an axisymmetric FEM and compared with another shell formulation implemented in a 3D FEM. Advantages and drawbacks of this new formulation are discussed. © 1965-2012 IEEE.

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