Influence of current frequency on the dynamic voltage/current characteristics of vacuum arcs
Influence of current frequency on the dynamic voltage/current characteristics of vacuum arcs
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DOI：
10.1109/deiv.1996.545351
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发表时间：
1996-07
期刊：
影响因子：
--
通讯作者：
Z. Zaiucki
中科院分区：
文献类型：
--
作者：
Z. Zaiucki
在频率为50 Hz ~ 6.0 kHz、峰值电流高达13 kA的正弦电流波形下，进行了电弧电压的测量。在2和10 mm的固定间隙长度下使用普通CuCr对接触头。结果表明：（a）半周正弦电流下电弧电压的形状和大小与电流幅值、频率和电极间距有关，（B）电弧电压高幅波动（HAF）起始的瞬时电流值随电流幅值和频率的增加而增加;（c）在电流瞬时值相同的情况下，电流频率越高，HAF发生范围以外的电弧电压越大，电流增大时的电弧电压也大于电流减小时的电弧电压。给出了真空电弧电压测量值与放电模式之间的定性关系。
Measurements of arc voltage were carried out for sinusoidal current wave with frequency from 50 Hz to 6.0 kHz and peak currents up to 13 kA. The plain CuCr butt contacts at fixed gap lengths of 2 and 10 mm were used. The obtained characteristics enabled to state that: (a) the shape and value of the arc voltage during the half cycle sinusoidal current flow depend on the current amplitude and frequency as well as on electrode spacing; (b) the instantaneous current value of high-amplitude fluctuations (HAF) onset in arc voltage, increase with current amplitude and frequency increase; and (c) the arc voltage beyond the range of HAF occurrence is greater, at the same instantaneous value of the current, for higher current frequency; it is also greater during the current increase than its decrease. The qualitative correlations between the measured vacuum arc voltage and an expected discharge mode have been presented.