Structure for reducing fault current of multi level converter and apparatus using it

The incident of the multilevel converter current reducing structure and a device using the same are provided. Fault current reducing structure of a multi-level converter according to one embodiment of the invention, the bypass circuit providing a bypass passage of a fault current of the converter arm; A diode disposed in the bypass circuit to bypass the fault current; And it is provided in the bypass circuit for the storage of the fault current, and a diode in series with the capacitor.