基于自然换流和IGBT软关断技术，研制了一种新型的HCB。
A novel structure of the HCB based on naturally current commutating and IGBT soft switching was researched.
结合此技术，还提出了关断缓冲电容器能量的自动放电复位电路。
With the technique, a reset circuit of automatic discharge for energy captured in the turn-off snubber capacitor is also presented.
可以证明，采用先进的电压箝位技术能够限制因关断拖尾电流而引起的第二个电压尖峰。
Advanced voltage clamping techniques are demonstrated, which can also limit the second voltage spike originating from the tail current cut off.
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