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95 results on '"Tucci, V."'

39. Robust Design of Electromagnetic Systems Based on Interval Taylor Extension Applied to a Multiquadric Performance Function.

Author

Egiziano, L., Lamberti, P., Spagnuolo, G., and Tucci, V.

Subjects
INTERVAL analysis, ELECTROMAGNETISM, FINITE element method, INTERPOLATION, COMPUTER assisted logic design
Abstract

A worst case robust design approach based on a suitable application of interval arithmetic (IA) is proposed. The use of IA leads to a definition of the interval extension of the Taylor series named interval Taylor extension (ITE). The width of the ITE (WITE) has been shown to be a valuable robustness index in the case of polynomial performance functions (PFs). In this paper, the method is extended to nonpolynomial PFs, as those ones obtained by multiquadric interpolation in computer assisted electromagnetic design (by FEM, BEM, etc.). In particular, it is shown that the ITE of a multiquadric function furnishes a rigorous overbounding of the PF and the WITE gives an overestimation of the PF range in presence of an assigned uncertainty of the design parameters, both in an analytical monodimensional case study and in the benchmark TEAM 22 optimization problem. Moreover, the most robust stationary solution can be achieved by looking at the minimum of WITE. [ABSTRACT FROM AUTHOR]

Published
2008
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40. Multiconductor Transmission Line Analysis of Steep-front Surges in Machine Windings.

Author

Lupo, G., Petrarca, C., Vitelli, M., and Tucci, V.

Subjects
ELECTRICITY, STRAINS & stresses (Mechanics), MULTICONDUCTOR transmission lines, FINITE element method
Abstract

Focuses on a study which evaluated the electrical stress in the line-end coil of the stator winding of a medium voltage motor fed by a pulsed width modulated inverter. Description of the model and simulation; Features of the solution technique for the multiconductor transmission lines; Explanation and application of the finite-element method field package; Analysis of results.

Published
2002
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41. Temperature Distribution along an Outdoor Insulator Subjected to Different Pollution Levels.

Author

Vitelli, M. and Tucci, V.

Subjects
*INSULATING materials, *TEMPERATURE, *SURFACES (Physics), *SCIENTIFIC experimentation
Abstract

Presents information on a study which evaluated the temperature distribution along the surface of an outdoor insulator subjected to pollution of different severity in order to predict dry band formation. Electro-thermal problem formulation; Models for contaminating and purging processes; Results and discussion; Conclusions.

Published
2000
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42. On the Effect of Anisotropy in Nonlinear Composite Materials for Stress Grading Applications.

Author

Tucci, V. and Vitelli, M.

Subjects
*ANISOTROPY, *COMPOSITE materials, *ELECTRIC properties, *NONLINEAR theories, *SCIENTIFIC experimentation
Abstract

Studies the influence of both anisotropy and nonlinearity on the electrical field dynamics inside cable terminations adopting stress grading carbon-black loaded composites. Numerical formulation of the problem; Results and discussion; Conclusions.

Published
2000
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43. A Galerkin Model to Study the Field Distribution in Electrical Components Employing Nonlinear...

Author

Egiziano, L. and Tucci, V.

Subjects
*ELECTRIC fields, *GALERKIN methods
Abstract

Presents information on a study which described a model used for evaluation of electric field dynamics inside electrical components employing nonlinear stress grading materials. General formulation of the electro-quasi-static problem; Description of the proposed model; Application of the proposed model; Conclusions.

Published
1999
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