Analysis of the optimal operation frequency with lowest time-delay jitter for an electrically triggered field-distortion spark gap
journal contributionposted on 28.10.2019, 10:33 by Falun Song, Fei Li, Beizhen Zhang, Mingdong Zhu, Chunxia Li, Ganping Wang, Haitao Gong, Yanqing Gan, Xiao Jin, Bucur Novac, Ivor Smith
This work was stimulated by the assumption that for a gas-filled spark gap closing switch operating at a high repetition frequency, there is an optimal frequency range in which the time-delay jitter reaches a minimum value. The experiments to test this assumption use an electrically triggered, field-distortion spark gap filled with the SF6/N2 gas mixture. The results show that indeed, the time-delay jitter decreases for a range of frequencies for which the filling gas can substantially restore the interelectrode insulation before increasing at a higher operation frequency. The experimental results demonstrate the correctness of the abovepresented assumption: the time-delay jitter of the field-distortion spark gap has its minimum when the unit operates in the repetition frequency range between 20 and 30 Hz. Since the recovery time depends on the gas species and the gap distance, the optimum operation frequency range should also vary depending on the spark-gap distance and the filling gas properties.
- Mechanical, Electrical and Manufacturing Engineering