System for Controlling Multi Level Inverter and Method for the same

Multilevel inverter control system in accordance with an embodiment of the present invention, a multi-level inverter of the plurality of unit cells are connected in series; Cell controller for generating a first signal for controlling the unit cells; And converting the first signal transmitted from the cell controller to the first optical signal and transmitted to the unit cells, and converts the second signal transmitted from the unit cell to the second optical signal transmitted to the cell controller, the the cell controller that operates at a lower voltage than the unit cell characterized in that it comprises an electrically shielded I / O interface unit from said unit cells, According to the invention there is an effect that it is possible to isolate the master controller and cell controllers of the high voltage from the unit cell.