CONTROL DEVICE FOR PWM CONVERTER, DEAD TIME COMPENSATION METHOD THEREOF, CONTROL DEVICE FOR PWM INVERTER AND DEAD TIME COMPENSATION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To improve accuracy of dead time compensation.;SOLUTION: A converter control device 4 for controlling a PWM converter includes: a current detection part 21 for sampling an input current that is inputted to the PWM converter, in a double frequency of a carrier signal; a dead time compensation part 23 which outputs, as a dead time compensation voltage, a first voltage in the case where both continuous two current values detected by the current detection part 21 are positive, a second voltage of which the polarity is different from that of the first voltage in the case where both the continuous two current values are negative, and zero in the case where the continuous two current values are positive and negative; and a PWM signal generation part 24 for generating a PWM signal by adding the dead time compensation voltage outputted from the dead time compensation part 23 to a PWM voltage command and comparing the PWM voltage command after the addition with the carrier signal.;COPYRIGHT: (C)2015,JPO&INPIT