Power measurement apparatus and power measurement method

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United States of America Patent

PATENT NO 12019103
APP PUB NO 20220229096A1
SERIAL NO

17614630

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Abstract

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A power measurement apparatus includes a voltage detector, current detector, and power calculator. The voltage detector contactlessly detects an AC voltage of a conductive path to which power is supplied from an AC power source having a magnitude of AC voltage regulated to be a predetermined value, and outputs a first data signal regarding a voltage waveform of the AC voltage of the conductive path. The current detector contactlessly detects an AC current flowing through the conductive path, and outputs a second data signal regarding a current waveform of the AC current of the conductive path. A power calculator receives the first and second data signals, and calculates active power of the conductive path from a product of a second instantaneous voltage and an instantaneous current of the current waveform indicated by the second data signal. The second instantaneous voltage is generated by converting a first instantaneous voltage.

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Patent Owner(s)

Patent OwnerAddress
DAIKIN INDUSTRIES LTDKITA-KU OSAKA 530
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY3-1 KASUMIGASEKI 1-CHOME CHIYODA-KU TOKYO 1008921 ?1008921

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dohmae, Hiroshi Osaka, JP 11 28
Fujimoto, Jun Tsukuba, JP 164 3308
Miyake, Yuka Osaka, JP 9 7
Suzuki, Akio Tsukuba, JP 254 3301

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