A Novel Tool for Breakdown Probability Predictions on Multi-Electrode Multi-Voltage Systems

An innovative approach for the voltage breakdown prediction in high-voltage systems, insulated by large vacuum gaps, is presented. It is based on the correlation between the clump mechanism and a statistical approach to the breakdown probability. The aim of this paper is twofold. First, the numerica...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2014-02, Vol.50 (2), p.93-96
Main Authors: Bettini, Paolo, Pilan, Nicola, Specogna, Ruben
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Electric breakdown
Electrodes
Electrostatics
Equations
Exact sciences and technology
finite-element method
high voltage
ion beam
Magnetism
Materials science
Mathematical model
Other topics in materials science
Physics
Trajectory
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Summary:An innovative approach for the voltage breakdown prediction in high-voltage systems, insulated by large vacuum gaps, is presented. It is based on the correlation between the clump mechanism and a statistical approach to the breakdown probability. The aim of this paper is twofold. First, the numerical solution of 3-D electrostatic problems by a couple of complementary formulations is presented. Second, an efficient post-processing tool is introduced, based on the analytical solution of the equations of motion in a domain covered by a tetrahedral mesh, to estimate the breakdown probability associated to the electrically charged microparticles leaving one electrode and clashing to the electrode with opposite polarity with sufficient energy to get vaporization. This approach has been benchmarked on a reference configuration (sphere/plane) problem and applied to calculate the particle trajectories in a very complex multi-electrode multi-voltage system.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2013.2281851