A system for driving inverters in parallel by creating control signals for a slave controller to control the inverters corresponding to the slave controller, the system comprising: a master controller; a plurality of slave controllers; a plurality of inverters controlled correspondingly by each of the slave controllers; and a control signal creation unit configured to create control signals for the slave controllers by using data sent and received between the master controller and the slave controllers to enable the plurality of inverters to generate balanced output currents, wherein, for each inverter, the control signal creation unit comprises, for each phase: an input adder configured to find differences between the average value (I u avg) of the output current of the selected phase of the plurality of inverters, the average value being obtained from the master controller and the output current value (I u M) of the selected phase of the 3-phase output currents of the selected inverter, the output current value being obtained from the slave controller of the selected inverter (#M); a proportional-integral controller configured to perform proportional integral control on output values of the input adder; a current proportioning unit configured to perform proportioning on output values of the proportional-integral controller by multiplying an output value of the proportional-integral controller by a value obtained by dividing the output current value of the selected phase by an average current peak value (Ipeak) obtained from the master controller, to differentiate a compensation range for the selected phase current with respect to the output values of the proportional-integral controller; a limiter configured to perform limiting on output values of the current proportioning unit to limit the difference between the average values of the selected phase of the 3-phase output currents and the output current values of the selected phase of the 3 phase output currents; and an output adder configured to add up pulse width information of the selected phase of the 3-phase output currents to output values of the limiter. a master controller; a plurality of slave controllers; a plurality of inverters controlled correspondingly by each of the slave controllers; and a control signal creation unit configured to create control signals for the slave controllers by using data sent and received between the master controller and the slave controllers to enable the plurality of inverters to generate balanced output currents, wherein, for each inverter, the control signal creation unit comprises, for each phase: an input adder configured to find differences between the average value (I u avg) of the output current of the selected phase of the plurality of inverters, the average value being obtained from the master controller and the output current value (I u M) of the selected phase of the 3-phase output currents of the selected inverter, the output current value being obtained from the slave controller of the selected inverter (#M); a proportional-integral controller configured to perform proportional integral control on output values of the input adder; a current proportioning unit configured to perform proportioning on output values of the proportional-integral controller by multiplying an output value of the proportional-integral controller by a value obtained by dividing the output current value of the selected phase by an average current peak value (Ipeak) obtained from the master controller, to differentiate a compensation range for the selected phase current with respect to the output values of the proportional-integral controller; a limiter configured to perform limiting on output values of the current proportioning unit to limit the difference between the average values of the selected phase of the 3-phase output currents and the output current values of the selected phase of the 3 phase output currents; and an output adder configured to add up pulse width information of the selected phase of the 3-phase output currents to output values of the limiter. an input adder configured to find differences between the average value (I u avg) of the output current of the selected phase of the plurality of inverters, the average value being obtained from the master controller and the output current value (I u M) of the selected phase of the 3-phase output currents of the selected inverter, the output current value being obtained from the slave controller of the selected inverter (#M); a proportional-integral controller configured to perform proportional integral control on output values of the input adder; a current proportioning unit configured to perform proportioning on output values of the proportional-integral controller by multiplying an output value of the proportional-integral controller by a value obtained by dividing the output current value of the selected phase by an average current peak value (Ipeak) obtained from the master controller, to differentiate a compensation range for the selected phase current with respect to the output values of the proportional-integral controller; a limiter configured to perform limiting on output values of the current proportioning unit to limit the difference between the average values of the selected phase of the 3-phase output currents and the output current values of the selected phase of the 3 phase output currents; and an output adder configured to add up pulse width information of the selected phase of the 3-phase output currents to output values of the limiter.