IN2014DN06730A - - Google Patents

Info

Publication number
IN2014DN06730A
IN2014DN06730A IN6730DEN2014A IN2014DN06730A IN 2014DN06730 A IN2014DN06730 A IN 2014DN06730A IN 6730DEN2014 A IN6730DEN2014 A IN 6730DEN2014A IN 2014DN06730 A IN2014DN06730 A IN 2014DN06730A
Authority
IN
India
Prior art keywords
light
current
carrier signals
optical element
magnetic optical
Prior art date
Application number
Inventor
Yusuke Seo
Kaoru Torii
Kentaro Hirose
Naoto Kikuchi
Kenichi Takagi
Kazunari Moriya
Original Assignee
Toyota Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Co Ltd filed Critical Toyota Motor Co Ltd
Publication of IN2014DN06730A publication Critical patent/IN2014DN06730A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/245—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Inverter Devices (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

Provided is a current measuring technology wherein influence of switching noise is suppressed. A technology disclosed by the present description is a current sensor which measures an output current of a switching circuit. The current sensor is provided with a magnetic optical element disposed at a current measuring point a light source for radiating light to the magnetic optical element and a light receiver that receives light passed through or reflected by the magnetic optical element. The light source radiates light in synchronization with carrier signals of the switching circuit. The light source radiates the light in synchronization with the carrier signals and measures the current using the light. Since the light is synchronized with the carrier signals the current can be measured at timing other than switching timing due to PWM signals generated on the basis of the carrier signals.
IN6730DEN2014 2012-02-23 2012-02-23 IN2014DN06730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/054426 WO2013125011A1 (en) 2012-02-23 2012-02-23 Current sensor and power converter

Publications (1)

Publication Number Publication Date
IN2014DN06730A true IN2014DN06730A (en) 2015-05-22

Family

ID=49005231

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6730DEN2014 IN2014DN06730A (en) 2012-02-23 2012-02-23

Country Status (7)

Country Link
US (1) US20150015248A1 (en)
KR (1) KR20140117558A (en)
CN (1) CN104136927A (en)
DE (1) DE112012005929T5 (en)
IN (1) IN2014DN06730A (en)
RU (1) RU2014134445A (en)
WO (1) WO2013125011A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104136927A (en) * 2012-02-23 2014-11-05 丰田自动车株式会社 Current sensor and power converter
DE102015006449B4 (en) 2015-05-18 2022-10-13 Michael Franke Method of measuring electric currents
JP6439771B2 (en) * 2016-10-19 2018-12-19 トヨタ自動車株式会社 Driving device and automobile
DE112019000344T5 (en) * 2018-02-15 2020-09-17 Hitachi Automotive Systems, Ltd. POWER CONVERSION DEVICE

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119367A (en) * 1976-03-31 1977-10-06 Ono Yutaka Method and apparatus for detecting voltage using phototransformer
US4683421A (en) * 1985-03-29 1987-07-28 Westinghouse Electric Corp. Drift compensation technique for a magneto-optic current sensor
JPH0797907B2 (en) * 1986-09-22 1995-10-18 株式会社日立製作所 PWM inverter current controller
GB2190754A (en) * 1986-04-11 1987-11-25 Hitachi Ltd Load current detecting device for pulse width modulation inverter
US4698497A (en) * 1986-05-22 1987-10-06 Westinghouse Electric Corp. Direct current magneto-optic current transformer
US4694243A (en) * 1986-05-28 1987-09-15 Westinghouse Electric Corp. Optical measurement using polarized and unpolarized light
US5243293A (en) * 1989-05-29 1993-09-07 Ngk Insulators, Ltd. System utilizing optical current sensors for detecting fault location in substation
JPH06224727A (en) * 1993-01-27 1994-08-12 Mazda Motor Corp Power control signal detector
US5631559A (en) * 1993-03-05 1997-05-20 Northeastern University Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors
CA2173142C (en) * 1993-10-01 2000-11-14 Thomas Bosselmann Method and device for measuring an electrical alternating quantity with temperature compensation
DE4446425A1 (en) * 1994-12-23 1996-06-27 Siemens Ag Method and arrangement for measuring a magnetic field using the Faraday effect with compensation for changes in intensity and temperature
EP0902896A4 (en) * 1996-05-31 1999-12-08 Rensselaer Polytech Inst Electro-optical and magneto-optical sensing apparatus and method for characterizing free-space electromagnetic radiation
US5973492A (en) * 1997-04-16 1999-10-26 Ma; Xianyun High accuracy optical current transducer thta eliminates birefringence
JP3290618B2 (en) * 1997-11-28 2002-06-10 松下電器産業株式会社 Optical sensor device and signal processing circuit used therefor
DE59911661D1 (en) * 1998-07-29 2005-03-31 Siemens Ag POLARIMETRIC SENSOR FOR THE OPTICAL DETECTION OF A MEASUREMENT SIZE AND USE OF THE POLARIMETRIC SENSOR
US6542647B2 (en) * 2000-10-27 2003-04-01 Matsushita Electric Industrial Co., Ltd. Optical signal transmission system and magneto-optical modulator designed to establish modulation over wide range for use in the same
US6476956B1 (en) * 2001-02-28 2002-11-05 Teracomm Research, Inc. Fast optical modulator
WO2003044544A1 (en) * 2001-11-15 2003-05-30 Airak, Inc. Sensor for optically measuring magnetic field
JP4585740B2 (en) * 2002-09-13 2010-11-24 株式会社日立グローバルストレージテクノロジーズ Magnetic recording / reproducing device
EP1491903A1 (en) * 2003-05-12 2004-12-29 Kasmatic Innovation A/S Fiberoptic Faraday effect sensor
JP4568133B2 (en) * 2004-03-30 2010-10-27 三洋電機株式会社 Semiconductor laser device and optical device
EP1884787A1 (en) * 2006-07-10 2008-02-06 S. THIIM ApS A current sensor for measuring electric current in a conductor and a short circuit indicator system comprising such a sensor
CN101675344A (en) * 2006-11-30 2010-03-17 北方传感器公司 Sensor assembly and method for measuring strokes of lightning
US8202053B2 (en) * 2008-03-19 2012-06-19 General Electric Company Micro-electromechanical current sensing apparatus
EP2128631A1 (en) * 2008-05-30 2009-12-02 PowerSense A/S Faraday optical current sensor arrangement
EP2148210A1 (en) * 2008-07-21 2010-01-27 PowerSense A/S 3-phase Faraday optical current sensor assembly
CN101762795B (en) * 2009-12-31 2013-01-23 上海舜宇海逸光电技术有限公司 Optical fiber magneto-optic detection system and method
CN104136927A (en) * 2012-02-23 2014-11-05 丰田自动车株式会社 Current sensor and power converter

Also Published As

Publication number Publication date
RU2014134445A (en) 2016-04-10
KR20140117558A (en) 2014-10-07
DE112012005929T5 (en) 2014-12-24
WO2013125011A1 (en) 2013-08-29
CN104136927A (en) 2014-11-05
US20150015248A1 (en) 2015-01-15

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