A power conversion device comprising: a power converter configured to convert, by performing ON/OFF operations on a plurality of switching elements (Su, Sv, Sw, Sx, Sy, Sz) comprised in the power converter, either an alternating current output from an AC power supply or a direct current converted from the alternating current into a different alternating current having a predetermined frequency and a predetermined voltage; a capacitor configured to smooth a ripple voltage generated as a result of the ON/OFF operations; a storage configured to store values in storage areas comprised in the storage during an AC power supply half period, each correlated to a disturbance that causes distortion in an input current (Iin) to the power converter, in association with a phase angle (θin) of a voltage (Vin) of the AC power supply; and a power conversion controller (50, 60) configured to control the ON/OFF operations by using the values stored during the preceding AC power supply half period in the storage to compensate the modulated variable (iT*) of control to be performed by the power converter for said disturbance associated with the phase angle (θin) of the voltage (Vin) of the AC power supply, and further is configured to update the multiple values stored in the storage, wherein if a storage cycle of update of a value stored in the storage is shorter than a control cycle of control of the ON/OFF operations, the power conversion controller (50, 60) is configured to set, in response to the occurrence of not updating a value of a storage area located between the storage area corresponding to the previous control cycle and the storage area corresponding to the current control cycle, the non updated value of the storage area to a value interpolated between a value stored in the previous control cycle and a value stored during the current control cycle. a power converter configured to convert, by performing ON/OFF operations on a plurality of switching elements (Su, Sv, Sw, Sx, Sy, Sz) comprised in the power converter, either an alternating current output from an AC power supply or a direct current converted from the alternating current into a different alternating current having a predetermined frequency and a predetermined voltage; a capacitor configured to smooth a ripple voltage generated as a result of the ON/OFF operations; a storage configured to store values in storage areas comprised in the storage during an AC power supply half period, each correlated to a disturbance that causes distortion in an input current (Iin) to the power converter, in association with a phase angle (θin) of a voltage (Vin) of the AC power supply; and a power conversion controller (50, 60) configured to control the ON/OFF operations by using the values stored during the preceding AC power supply half period in the storage to compensate the modulated variable (iT*) of control to be performed by the power converter for said disturbance associated with the phase angle (θin) of the voltage (Vin) of the AC power supply, and further is configured to update the multiple values stored in the storage, wherein if a storage cycle of update of a value stored in the storage is shorter than a control cycle of control of the ON/OFF operations, the power conversion controller (50, 60) is configured to set, in response to the occurrence of not updating a value of a storage area located between the storage area corresponding to the previous control cycle and the storage area corresponding to the current control cycle, the non updated value of the storage area to a value interpolated between a value stored in the previous control cycle and a value stored during the current control cycle.