Apparatus for controlling paralleled inverter

An apparatus for controlling at least two paralleled inverters, the apparatus comprising:

• a controller configured to correct operation information by performing proportional integral (PI) control with an error of output currents of the at least two paralleled inverters and transmit the corrected operation information to at least two interface units using a predetermined communication type via one synchronization signal using a controller area network (CAN);
• and
• a detection unit configured to detect output currents of each of the at least two paralleled inverters,
• wherein the at least two interface units are each configured to:
• transmit the corrected operation information to a corresponding one of the at least two paralleled inverters;
• convert an electric signal transmitted from the controller into an optical signal and transmit the optical signal to the corresponding paralleled inverter;
• and
• convert the optical signal received from the corresponding paralleled inverter to the electric signal and transmit the electric signal to the controller.