Development of copper‐tungsten clad‐contacts for 400 A‐arc‐less switching of hybrid dc switch
Development of copper‐tungsten clad‐contacts for 400 A‐arc‐less switching of hybrid dc switch
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开发用于混合直流开关 400 A 无弧开关的铜钨复合触点
DOI：
10.1002/eej.23249
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发表时间：
2020
影响因子：
0.4
通讯作者：
Yasuoka Koichi
中科院分区：
文献类型：
--
作者：
Yamada Yuta;Chen Mo;Yasuoka Koichi
由于光伏电站或直流配电系统的需求不断增加，混合直流开关得到了广泛的研究。混合直流开关的优点是低接触电阻和高速中断。我们已经证明了电流从铜基钨触点到SiC‐MOSFET的无电弧换向。无电弧换向可防止触点腐蚀，这是传统直流机械开关的缺点之一。该报告显示了混合直流开关中无弧换向的阈值电流和不同材料触点的接触电阻高达400 A的实验结果。
A hybrid dc switch has been studied extensively due to the increasing demand for photovoltaic plants or dc power distribution systems. The advantages of the hybrid dc switch are low contact resistance and high‐speed interruption. We have demonstrated an arc‐less commutation of current from copper‐based tungsten contacts to a SiC‐MOSFET. The arc‐less commutation prevents the contact erosion that is one of the drawbacks of conventional dc mechanical switches. This report shows the experiment results on the threshold current of the arc‐less commutation and the contact resistance with different material contacts up to 400A in a hybrid dc switch.