Dependence of spark conditioning on breakdown charge and electrode material under a non-uniform electric field in vacuum
Dependence of spark conditioning on breakdown charge and electrode material under a non-uniform electric field in vacuum
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真空非均匀电场下火花调理对击穿电荷和电极材料的依赖性
DOI：
10.1109/tdei.2016.7736889
复制
发表时间：
2016
影响因子：
3.1
通讯作者：
M. Sakaki
中科院分区：
文献类型：
--
作者：
H. Kojima;T. Takahashi;N. Hayakawa;K. Hasegawa;H. Saito;M. Sakaki
火花调节是提高真空介质介电强度的有效方法。本文讨论了在不同的非均匀电场和电路参数下，真空中火花调理对击穿（BD）电荷和电极材料的依赖性。我们将负脉冲电压应用于具有不锈钢（SS）， Cu- cr或OFHC Cu （Cu）制成的阴极和由SS或Cu制成的阳极的棒面电极配置。我们改变了间隙距离、棒电极的尖端半径和电路参数。因此，调理效果即通过调理提高双相电场强度取决于双相电荷（QBD），并在对QBD的作用下达到最大值。达到最大调理效果所需的最佳QBD随阴极熔点的减小而减小。此外，当阴极加热引起的BD （CH-BD）容易发生时，在SS阳极中，调理后阴极表面的BD电场强度取决于QBD，而与间隙距离和尖端半径无关。因此，对于CH-BD，我们从电极配置和QBD中估计了通过火花调节可以实现的耐压。然而，当Cu阳极容易发生由阳极加热引起的BD （AH-BD）时，AH-BD的最佳QBD大于CH-BD，因为AH-BD的阴极温度低于CH-BD。
Spark conditioning is an effective method for improving dielectric strength in vacuum. In this paper, we discuss the dependence of spark conditioning on breakdown (BD) charge and electrode material in vacuum under various non-uniform electric field and circuit parameters. We applied a negative impulse voltage to a rod-plane electrode configuration with a cathode made of stainless steel (SS), Cu-Cr, or OFHC Cu (Cu), and an anode made of SS or Cu. We changed the gap distance, the tip radius of the rod electrode and the circuit parameters. As a result, the conditioning effect, i.e. improving BD electric field strength by the conditioning, depended on the BD charge (QBD) and reached its maximum value against QBD. The optimal QBD required to achieve the maximum conditioning effect decreased with the cathode melting point. Moreover, when BD caused by cathode heating (CH-BD) occurred readily, with the SS anode, the BD electric field strength at the cathode surface after conditioning depended on QBD, regardless of the gap distance and the tip radius. Thus, for CH-BD, we estimated the withstand voltage that could be achieved by spark conditioning from the electrode configuration and QBD. However, when BD caused by anode heating (AH-BD) occurred easily with the Cu anode, the optimal QBD was larger than that for CH-BD because the cathode temperature was lower for AH-BD than for CH-BD.
DOI：
10.1109/tdei.2006.1593405
发表时间：
2006-02
影响因子：
3.1
作者：
M. Homma;M. Sakaki;E. Kaneko;S. Yanabu
通讯作者：
M. Homma;M. Sakaki;E. Kaneko;S. Yanabu