TY - GEN
T1 - Fundamental studies on switching arcs -Experimental and numerical approaches
AU - Tanaka, Yasunori
AU - Nakano, Tomoyuki
AU - Hao, Sun
AU - Tomita, Kentaro
AU - Inada, Yuki
AU - Kumada, Akiko
AU - Hidaka, Kunihiko
AU - Fujino, Takayasu
AU - Suzuki, Katsumi
AU - Shinkai, Takeshi
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/12
Y1 - 2017/12/12
N2 - Both experimental and numerical approaches have been done on switching arc plasmas for fundamental studies. In the experimental approaches, power-semiconductor switching has been used to control intentional current injections and voltage applications to switching arcs with a high accuracy in time. The systematic experiments provided the interruption probability property for different gas kinds and gas flow rates, as well as the dielectric recovery properties between the electrodes. Time evolutions in electron density were derived by Laser Thomson Scattering (LTS) and Shack-Hartmann (SH) method for different gases. On the other hand, for this nozzle space, numerical models were developed to simulate arc dynamic behaviors with and without local thermodynamic equilibrium (LTE) assumptions for different gases. It was found that the time evolution in electron density derived by the chemically non-equilibrium model is in good agreement with the experimental results by LTS.
AB - Both experimental and numerical approaches have been done on switching arc plasmas for fundamental studies. In the experimental approaches, power-semiconductor switching has been used to control intentional current injections and voltage applications to switching arcs with a high accuracy in time. The systematic experiments provided the interruption probability property for different gas kinds and gas flow rates, as well as the dielectric recovery properties between the electrodes. Time evolutions in electron density were derived by Laser Thomson Scattering (LTS) and Shack-Hartmann (SH) method for different gases. On the other hand, for this nozzle space, numerical models were developed to simulate arc dynamic behaviors with and without local thermodynamic equilibrium (LTE) assumptions for different gases. It was found that the time evolution in electron density derived by the chemically non-equilibrium model is in good agreement with the experimental results by LTS.
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U2 - 10.1109/ICEPE-ST.2017.8189008
DO - 10.1109/ICEPE-ST.2017.8189008
M3 - Conference contribution
AN - SCOPUS:85046898355
T3 - ICEPE-ST 2017 - 4th International Conference on Electric Power Equipment- Switching Technology
SP - 1
EP - 10
BT - ICEPE-ST 2017 - 4th International Conference on Electric Power Equipment- Switching Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Conference on Electric Power Equipment- Switching Technology, ICEPE-ST 2017
Y2 - 22 October 2017 through 25 October 2017
ER -