推导了MCT关断电流的简单计算公式；
Simple calculation formula of MCT turning off current is derived.
这引出了新的问题：最初施加电功率时出现了大的浪涌关断电流。
This gives rise to a new problem: the occurrence of a large inrush off-current upon the first application of electrical power.
减小主开关管关断损耗采用了零电流关断电路。
ZCS circuit is adopted to reduce the loss of the main switch when switch off.
减小主开关管关断损耗采用了零电流关断电路。
ZCS circuit is adopted to reduce the loss of the main switch when switch off.
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