Title :
Transient nonlinear thermal runaway effects in carbon graphite electrical brushes
Author :
Yune, Young Gill ; Bryant, Michael David
Author_Institution :
Dept. of Mech. & Aerosp. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
3/1/1988 12:00:00 AM
Abstract :
A numerical analysis is formulated and used to determine the transient temperature fields associated with Joule heating of a cooled stationary electrical contact. The temperature field equations are developed using integral transforms, complex variables, and conformal transforms; approximate solutions are developed using finite-difference methods. Transient nonlinear temperature fields are obtained and compared with temperature fields obtained from linear and nonlinear studies. Thermal runaway effects are noticed and studied
Keywords :
brushes; electrical contacts; graphite; numerical analysis; C graphite brushes; C-Cu contact; Cu slip rings; Joule heating; approximate solutions; complex variables; conformal transforms; cooled stationary electrical contact; finite-difference methods; graphite electrical brushes; integral transforms; numerical analysis; temperature field equations; transient nonlinear thermal runaway effects; transient temperature fields; Brushes; Contacts; Electric resistance; Integral equations; Nonlinear equations; Resistance heating; Temperature; Thermal conductivity; Thermal resistance; Transforms;
Journal_Title :
Components, Hybrids, and Manufacturing Technology, IEEE Transactions on
