吹气对氮气火花隙开关重复频率运行性能的影响
Effect of gas flow velocity on repetitive operation performance of nitrogen spark gap switch
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摘要: 基于紧凑重复频率Tesla变压器实验平台,运用设计加工的紧凑型内部气流循环式火花隙开关,对吹气提高火花隙开关重复频率运行性能进行系统的实验研究,结果表明:重复频率小于50 Hz时,火花隙开关击穿电压不稳定度(RMS)小于5%,不需要吹气;在给定吹气速度下,火花隙开关重复频率运行存在临界重复频率;火花隙开关重复频率运行存在最佳吹气速度,且最佳吹气速度与重复频率之间满足线性关系,并可由实验确定;在优化吹气速度条件下,当气压处于0.7~1.5 MPa范围时,该火花隙开关击穿电压不稳定度(RMS)小于3%;在2.0 MPa的压强范围内,该吹气式火花隙开关可稳定工作至重复频率300 Hz,击穿电压400 kV。Abstract: Effect of gas flow velocity on repetitive operation performance was experimentally investigated for a spark gap switch with a compact gas blowing system, based on a compact repetitive Tesla transformer. The experimental results were presented and analyzed. The conclusions are shown as follows: (1) for a repetition rate lower than 50 Hz, the pulse-to-pulse instability (RMS) of the breakdown voltage of the spark gap switch is smaller than 5% and it is possible to spare a gas blowing system; (2) given a gas flow velocity, there exists a critical repetition rate for the stable operation of the spark gap switch; (3) for the repetitive operation of the switch in a given repetition rate, there exists an optimal fan frequency, which is linear with the repetition rate and can be determined by expe
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Key words:
- gas blowing system /
- spark gap switch /
- self-breakdown /
- instability /
- tesla transformer
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