Influence of discharge synchronization on output current in fast linear transformer driver stage

Tieping, 孙铁平 Sun; Kailai, 乔开来 Qiao; Ning, 郭宁 Guo; Guowei, 张国伟 Zhang; Juanjuan, 韩娟娟 Han; Tao, 黄涛 Huang; Liangping, 王亮平 Wang; Peitian, 丛培天 Cong; Zhengzhong, 曾正中 Zeng

doi:10.3788/hplpb20102208.1959

强激光与粒子束

2010

DOI: 10.3788/hplpb20102208.1959

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Influence of discharge synchronization on output current in fast linear transformer driver stage

孙铁平 Sun Tieping¹,

乔开来 Qiao Kailai²,

郭宁 Guo Ning³

et al.

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A two-terminal fault location method for gas switch prefire in linear transformer driver

Wan,

Ding,

Sun

et al. 2024

Review of Scientific Instruments

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Large-scale linear transformer drivers (LTDs) are composed of numerous high-power gas switches, and switch prefire is a frequent operational fault. To detect and locate the faulty switch accurately and efficiently, a two-terminal location method is proposed. A B-dot sensor is integrated on the gas switch’s shell to collect the discharging signal. All the B-dot sensors are connected in parallel through cables of equal length. The fault position can be determined by the time delay of the signals at the two terminals. A diode is inserted between the B-dot sensor’s coil and the cable core to ensure low-loss transmission of the signal. Two methods are applied in fault location, including time-of-arrival (TOA) and time reversal (TR). For the TOA method, an energy criterion and a phase criterion are applied and compared. The accuracy of the energy criterion is greatly influenced by the signal-to-noise ratio, while the phase criterion requires a reasonable estimate of the actual delay to account for the impact of phase periodicity. The TR method based on a precise simulation model is established, which demonstrates high precision in location. The TR method has been tested and validated on a single stage LTD module. Moreover, the location method for double switches prefire is discussed theoretically. The method proposed in this paper will be helpful to improve the efficiency of the commissioning, operation, and maintenance of the large-scale LTD devices.

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A two-terminal fault location method for gas switch prefire in linear transformer driver

Wan,

Ding,

Sun

et al. 2024

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

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Influence of discharge synchronization on output current in fast linear transformer driver stage

Cited by 1 publication

References 0 publications

A two-terminal fault location method for gas switch prefire in linear transformer driver

A two-terminal fault location method for gas switch prefire in linear transformer driver

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