- Dual control device of H-bridge multi-level inverter

摘要

The present invention relates to a redundancy control device for an H-bridge multi-level inverter, and in particular, a main controller in charge of speed and current control of an electric motor, and a control signal (voltage command, operation and protection signal) of the main controller are CAN (Controller Area). A redundancy control device for an H-bridge multilevel inverter comprising an optical communication line transmitted by communication and a cell controller for operating a power cell in synchronization with a control signal received through the optical communication line. The control board of the main controller and the main control board, the main control board is characterized in that the redundant configuration of the redundant control board to the main control board to improve the reliability of continuous operation by detecting this. ; According to the present invention, through the duplication of the cell controller and the accessory circuit, the H-bridge multilevel inverter system can be expected to have an effect of switching and operating without stopping the H-bridge multilevel inverter in the event of a malfunction or damage. . ; Inverter, redundancy, controller, control board, optical conversion board,