Title:
CURRENT MEASUREMENT DEVICE AND CURRENT CALCULATION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/185409
Kind Code:
A1
Abstract:
This current measurement device (10) is equipped with a conducting body (110), a first terminal block (100), a pair of detection coils (120a, 120b), and a current calculation unit (300). A magnetic field proportional to the size of the conducted current to be measured is generated around the conducting body (110). The first terminal block (100) has a positioning surface (F) on which the conducting body (110) is positioned. The pair of detection coils (120a, 120b) are detection coils having an identical configuration, connected in series, and having opposite polarities, are positioned on the positioning surface (F) of the first terminal block (100) so as to sandwich the conducting body (110) with an insulating distance interposed therebetween, and output an induced electromotive voltage signal produced by the magnetic field generated by the conducting body (110) and an external magnetic field which is magnetic noise. The current calculation unit (300) calculates the current value to be measured on the basis of the induced electromotive voltage signal from the pair of detection coils (120a, 120b).
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Inventors:
KOTAKE HIROAKI (JP)
KOIZUMI YOSHIAKI (JP)
ISHIHARA MASAHIRO (JP)
KOIZUMI YOSHIAKI (JP)
ISHIHARA MASAHIRO (JP)
Application Number:
PCT/JP2014/062715
Publication Date:
November 20, 2014
Filing Date:
May 13, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01R15/18; H01F38/28
Foreign References:
| JP2011220952A | 2011-11-04 | |||
| JP2003510612A | 2003-03-18 | |||
| JP2000147023A | 2000-05-26 | |||
| JPH07159449A | 1995-06-23 | |||
| JP2011220952A | 2011-11-04 |
Other References:
See also references of EP 2998748A4
Attorney, Agent or Firm:
KIMURA MITSURU (JP)
Mitsuru Kimura (JP)
Mitsuru Kimura (JP)
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