The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS
Transactions ID Number: 29-377
Full Name: Narong Mungkung
Position: Associate Professor
Age: ON
Sex: Male
Address: 126 Prachauthit Rd. Bangmod Thungkru Bangkok
Country: THAILAND
Tel: +66-8-510-98599
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E-mail address: narong_kmutt@hotmail.com
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Title of the Paper: An Analysis of the Instability Mechanism of a Low - Current Metal Vacuum Arc for Silver Based Cathode Material
Authors as they appear in the Paper: NARONG MUNGKUNG1 ,TANES TANITTEERAPAN1, SOMCHAI ARUNRUNGRUSMI1, WEERACHAI CHAOKUMNERD2 AND TOSHIFUMI YUJI3
Email addresses of all the authors: narong_kmutt@hotmail.com,tanes_kmutt@yahoo.com
Number of paper pages: 10
Abstract: The purpose of this research was to investigate instability phenomena in low-current metal vacuum arc using the calculation data comparison with the experimental data. The instability phenomena are characterized by noise on the current trace prior to the actual current chopping. The instability current was investigated for various electrode materials. A cathode spot model is used to analyze the instability phenomena of vacuum arc. The experiment of major commercial switching electrode such as Ag-Pd is performed in this study. To study the parameters affecting the stability arc factors, the parameter scan of cathode materials and ion current fraction by numerical analysis, it was found that the critical current of the stable current is highly dependent on the thermal conductivity of the cathode material. However, the thermal conductivity effect on the instability phenomena of low-current metal vacuum arc was important for low surge switching electrode material deve!
lopment. An electrostatic probe was used to confirm these findings, and the analytical results were found to be similar to the measurement results. This is very important result for the development of cathode materials for low-surge vacuum interrupters.
Keywords: Cathode spot model, instability, thermal conductivity, silver, plasma parameter
EXTENSION of the file: .doc
Special (Invited) Session: An Analysis of the Instability Mechanism of a Low - Current Metal Vacuum Arc for Silver Based Cathode Material
Organizer of the Session: 613-387
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