CURRENT MEASUREMENT APPARATUS

WIPO Patent Application WO/2020/107426

A1

A current measurement apparatus (1), includes: an annular ferromagnetic core(10) formed of a pair of semiannular ferromagnetic subcores (101), where the ferromagnetic core (10) is configured to radially surround a multicore cable (2) whose current is measured; a plurality of magnetic field sensors (102) disposed on the annular inner surface of the ferromagnetic core (10), where each magnetic field sensor (102) is configured to at least detect a component magnetic field in a radial direction of the multicore cable (2) of an magnetic field generated by the current in the multicore cable (2), and generate an analog signal of the component magnetic field; an analog-to-digital converter (12) connected to the plurality of magnetic field sensors (102) for receiving the analog signal, and configured to convert the analog signal into a digital signal; a current calculation component (14), receiving the digital signal from the analog-to-digital converter (12) and determining the current value of a single electric wire (201) in the multicore cable (2) according to the digital signal and structural information of the multicore cable (2). The current measurement apparatus (1) of the present application can measure the current in the multicore cable (2).

LAMPE MATTIAS (CN)
BOVENSIEPEN DANIEL (CN)

PCT/CN2018/118648

June 04, 2020

November 30, 2018

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SIEMENS LTD CHINA (CN)

G01R19/00

US20120319676A1	2012-12-20
CN103645369A	2014-03-19
CN207541138U	2018-06-26
CN104280591A	2015-01-14
US20060232902A1	2006-10-19
US4914381A	1990-04-03

KANGXIN PARTNERS, P.C. (CN)

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