Numerical Analysis and Experiment of Floating Conductive Particle Motion Due to Contact Charging in High-Voltage System

• Published in: IEEE transactions on magnetics Vol. 52; no. 3; pp. 1 - 4
• Main Authors: Lee, Kang Hyouk, Baek, Myung Ki, Hong, Seung Geon, Kim, Young Sun, Choi, Hong Soon, Park, Il Han
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Analytical models; Atoms & subatomic particles; Charge; Conductive particle charging; Contact; Drag; Electric charge; Electric contacts; Electrodes; electromagnetic force; Finite element analysis; Gravity; Magnetism; Mathematical analysis; Mathematical model; Mathematical models; Numerical analysis; particle motion; surface charge density; electromagnetic force; surface charge density; particle motion; Conductive particle charging; numerical analysis
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2015.2496286

In this paper, the motion of conductive particles is modeled and analyzed using a coupled equation. A neutral conductive particle obtains charge when it comes into contact with an electrode. The forces acting on a particle consist of electric, drag, and gravitational forces. When the electric force is dominant over the other forces, a particle lifts up toward the upper electrode. The electric force on a particle is calculated using surface charge distribution, which is analyzed using the finite-element method. The dominant forces on the particles are used as a driving force in Newton's motional equation to analyze a particle motion. The analysis results show that the total charge, which enables the particle to lift off, is calculated using the coupled equation with respect to the applied voltage. The experiment using a spherical conductive particle is conducted, and the experiment result is compared with the numerical one to validate the numerical method.