In a power conversion device that includes a PWM converting means for generating a PWM pulse by comparing three-phase
voltage commands with a
triangular wave carrier signal, a power converter for converting between a
DC voltage and a three-phase AC
voltage by driving a switching element according to the PWM pulse, a current detecting means for detecting a pulsed current flowing through a
DC bus conductor of a main circuit, and a
voltage command correcting means for correcting three-phase voltage commands, which corrects the three-phase voltage commands so that a line voltage value between the
maximum phase and an intermediate phase and a line voltage value between the intermediate phase and the
minimum phase are each equal to or larger than a predetermined value, the
maximum phase, intermediate phase, and
minimum phase being determined in correspondence to momentary values of the three-phase voltage commands arranged in descending order, if the voltage command is outside an allowable upper limit or
lower limit, not only the voltage command for the
maximum phase and / or the
minimum phase but also the voltage command for the intermediate phase are corrected.Accordingly, the inability to detect a current due to a restriction imposed by an upper limit or a
lower limit for an output voltage is eliminated, and highly precise control of the power conversion device is achieved independently of the situation.