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Development of copper‐tungsten clad‐contacts for 400 A‐arc‐less switching of hybrid dc switch
Electrical Engineering in Japan ( IF 0.4 ) Pub Date : 2020-02-20 , DOI: 10.1002/eej.23249
Yuta Yamada 1 , Mo Chen 1 , Koichi Yasuoka 1
Affiliation  

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.

中文翻译:

铜钨复合触点的开发,用于混合直流开关的400 A无弧开关

由于对光伏电站或直流配电系统的需求不断增加,混合直流开关已经得到了广泛的研究。混合式直流开关的优点是低接触电阻和高速中断。我们已经证明了从铜基钨触点到SiC-MOSFET的电流的无电弧换向。无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。该报告显示了在混合直流开关中无电弧换向的阈值电流和不同材料的接触电阻高达400A的实验结果。
更新日期:2020-02-20
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