强电磁力是造成脉冲功率电缆损坏的主因, 其限制了脉冲功率电缆的通流能力。对同轴电缆导体层的受力情况进行了仿真, 探讨了电缆导体结构对脉冲功率电缆通流能力的影响。列举了使用过的一种同轴电缆, 分析了该种电缆外导体层的受力情况和结构变化趋势, 并讨论了试验结果。进一步对另一种结构的同轴电缆进行了分析和试验, 认为其具有更好的抗电磁力能力, 试验结果表明, 其峰值电流达到208 kA, 通流能力达到6.9 kA/mm2, 验证了这种电缆结构的优越性。

The high electromagnetic force produced by the pulse current is the main reason for the damage of pulse power cable, which also limits the current capacity of pulse power cable. We simulate the stress of the coaxial cable conductor layer, and discuss the cable conductor structure’s influence on the current capacity of pulse power cable. We example one kind of used coaxial cable, analyze the force of the outer conductor layer and the structure change tendency about the cable, and discuss the test result. Based on all of thoes, we research another structure type coaxial cable, and we believe that it has better capacity to oppose electromagnetic force. The experimental results show that the peak current of the new cable can achieve 208 kA, and the current capacity can achieve 6.9 kA/mm2, which can verify the superiority of the cable. Finally we provide a way to solve the problem of using too many cables in pulse power system.