Abstract
The thermal shock of the arc is the main cause of electrode damage in the spark gap switch, reducing the reliability of the switch. In this paper, we investigate the erosion characteristics of high-current pulsed arc on the graphite electrode based on the energy coupling model between the switching arc and graphite electrode. The magneto-hydrodynamic (MHD) theory is adopted to calculate the current density and temperature distribution of the pulsed arc, and the arc is considered as energy source on the electrodes. The transient energy flux intensity and the response of the electrodes are calculated with several typical pulsed discharge, and the energy state of the graphite is achieved. The sublimation characteristics of graphite electrode are studied under transient heating condition. The paper reveals the mass-loss mechanism of the graphite electrode and verifies the effect of reducing the energy flux to achieve anti-ablation of the electrodes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
