Power conversion device with reduced current deviation
AssigneeDaikin Industries, Ltd.
InventorsTomoisa Taniguchi, Morimitsu Sekimoto, Takurou Ogawa, Eiji Tooyama, Nobuo Hayashi
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Abstract
Disclosed herein is a power conversion device including a storage and a power conversion controller. The storage stores multiple values, each correlated to a disturbance that causes distortion in a current to a power converter, in association with a phase angle of a voltage of an AC power supply. The power conversion controller controls ON/OFF operations by using the values stored in the storage to compensate for a manipulated variable of control performed by the power converter in association with the phase angle of the voltage of the AC power supply.
Claims20
A power conversion device comprising:
- a power converter configured to convert, by performing ON/OFF operations on a plurality of switching elements, 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 multiple values, each correlated to a disturbance that causes distortion in an input current to the power converter, in association with a phase angle of a voltage of the AC power supply;
- and
- a power conversion controller configured to control the ON/OFF operations by using the multiple values stored in the storage to compensate for a manipulated variable of control performed by the power converter in association with the phase angle of the voltage of the AC power supply.
Dependencies are inferred from the claim text.