Zigzag connection soft switching hybrid-type multi-level DC interconnection current transformer

摘要: The invention discloses a zigzag connection soft switching hybrid-type multi-level DC interconnection current transformer and belongs to the technical field of intermediate high voltage power transmission distribution. includes bridge-type chopper, electronics capacitance bridge arm two identical reactance arms. Two arms chopper are each composed serial switch blocks connected in series. positive electrode is terminal while negative transformer. capacitancebridge electrodes middle points bridges respectively. thetwo both low According invention, voltage-transformer-free non-isolation method adopted forrealizing conversion different levels, so that all devices realize zero-current transform switching, advantages ofhigh efficiency, loss, easy implementation dynamic sharing economic cost achieved.