Driver for switching element and control system for machine using the same

A control system for controlling a machine, the control system comprising:

• an inverter equipped with a pair of upper- and lower-arm switching elements connected in series, each of the upper- and lower-arm switching elements having an input terminal, an output terminal, and an on-off control terminal;
• and
• a driver for driving each of the upper- and lower-arm switching elements to thereby invert a DC voltage inputted to the inverter into an AC voltage to be supplied to the machine, the driver comprising:
• a charging module configured to charge the on-off control terminal of a corresponding one of the upper- and lower switching elements for turning on the corresponding one of the upper- and lower switching elements;
• a limiting module configured to perform a task of limiting a voltage at the on-off control terminal of a corresponding one of the upper- and lower switching elements by a predetermined voltage to thereby limit an increase of a current flowing between the input and output terminals of a corresponding one of the upper- and lower switching elements;
• a determining module configured to determine whether the voltage at the on-off control terminal of a corresponding one of the upper- and lower switching elements deviates from the predetermined voltage while the limiting module is performing the limiting task;
• and
• a correcting module configured to correct the voltage at the on-off control terminal of a corresponding one of the upper- and lower switching elements to be close to the predetermined voltage when it is determined that the voltage at the on-off control terminal of a corresponding one of the upper- and lower switching elements deviates from the predetermined voltage.