Power conversion device with ripple filtering

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United States of America Patent

PATENT NO 9444287
APP PUB NO 20130026834A1
SERIAL NO

13640319

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Abstract

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An uninterruptible power supply device including a filter for rejecting, in the voltage of a power supply node between a converter and an inverter, a ripple voltage of a frequency twice a frequency of an output voltage of the inverter to generate a DC voltage. This filter includes an extraction unit for extracting the ripple voltage from the voltage of the power supply node, and a subtraction unit for subtracting the ripple voltage extracted by the extraction unit from the voltage of the power supply node to generate the DC voltage.

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Patent Owner(s)

  • TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ikeda, Katsumi Chiyoda-ku, JP 47 402
Matsuoka, Kazumasa Minato-ku, JP 3 15

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