EP1681694A1 - Schaltvorrichtung mit elektronischem Strombegrenzer - Google Patents

Schaltvorrichtung mit elektronischem Strombegrenzer Download PDF

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Publication number
EP1681694A1
EP1681694A1 EP06100168A EP06100168A EP1681694A1 EP 1681694 A1 EP1681694 A1 EP 1681694A1 EP 06100168 A EP06100168 A EP 06100168A EP 06100168 A EP06100168 A EP 06100168A EP 1681694 A1 EP1681694 A1 EP 1681694A1
Authority
EP
European Patent Office
Prior art keywords
current
limiter
electronic
switch
control means
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP06100168A
Other languages
English (en)
French (fr)
Other versions
EP1681694B1 (de
Inventor
Sébastien c/o Schneider Electric Ind. Carcouet
Thierry c/o Schneider Electric Industries Boudet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1681694A1 publication Critical patent/EP1681694A1/de
Application granted granted Critical
Publication of EP1681694B1 publication Critical patent/EP1681694B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/548—Electromechanical and static switch connected in series
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0036—Switches making use of microelectromechanical systems [MEMS]

Definitions

  • the present invention relates to a current switching device associating at least one current switch and an electronic current limiter.
  • the object of the invention is to provide a current switching device in which the opening or closing of a switch is provided on command without arcing.
  • a current switching device comprising at least one current switch for switching an electric load in an electric power circuit and characterized in that it also comprises an electronic current limiter connected in series with said power switch.
  • current and control means of the electronic current limiter adapted to control the activation or deactivation of the electronic current limiter, these control means being coupled to the current switch so that the control means activate the electronic current limiter to to obtain when switching the switch a current having a value less than or equal to a determined threshold value.
  • control means coordinate the activation or deactivation of the current limiter and the switching of the current switch in order to limit the current to a value less than that of the appearance of an electric arc when the opening or closing the current switch.
  • This coordination is automatically performed by the respective response times of the current limiter and the current switch or by the use of a timer for example integrated in the control means.
  • the timer of the control means is set for a determined duration corresponding to a time interval between the sending of an activation command to the electronic current limiter and the sending of a command. switching to the current switch.
  • a timer using such a timer can also be used to maintain activation of the current limiter until the opening and closing maneuvers are completed because failure to follow this procedure would result in damage. of the current switch.
  • the threshold value is substantially equal to zero.
  • the electronic current limiter is thus used in switch mode.
  • the electronic current limiter is manufactured from a substrate adapted to the power electronics, that is to say adapted to be integrated in a power supply circuit of an electric load.
  • the substrate of the electronic current limiter is made of silicon.
  • the substrate of the electronic current limiter is made of silicon carbide.
  • Silicon carbide may be preferentially used with silicon if the electronic current limiter is to be integrated in a microsystem and if the nominal voltage is greater than 400 Vac.
  • the electronic current limiter since the electrical circuit is powered by alternating current, the electronic current limiter must be bidirectional in current and voltage. A JFET component which is unidirectional can not be used as such as an electronic current limiter in the device according to the invention. According to the invention, the electronic current limiter therefore has a structure realized for example on the basis of a JFET silicon or silicon carbide to meet the needs of the invention.
  • JFET component In the case where it is desired to use a JFET component without modification, it must be integrated for example in the center of a diode bridge or be associated with another JFET component in parallel and with diodes.
  • the current switch is manufactured according to a microsystems type of technology (micromechanical or MEMS or combination of MEMS and micromechanics).
  • the current switch manufactured using a microsystems type technology and the electronic current limiter made of silicon carbide are integrated into one and the same component.
  • the device comprises a plurality of current switches arranged in parallel and coupled to the control means of the electronic current limiter.
  • the current switch provides galvanic isolation and has a low resistance in the on state at rated speed. On the other hand, it is not dimensioned to ensure only the breaking of the nominal current. The use of an electronic current limiter to prevent arcing is required.
  • the invention relates to a device 1 for switching a load C.
  • This switching device 1 uses an electronic current limiter 2 which makes it possible to avoid the appearance of an electric arc when opening or closing a device.
  • a current switch placed in the power supply electrical circuit of the charge C in alternating current.
  • the current electronic limiter 2 makes it possible to allow the current switch to pass only a current lower than a determined threshold value substantially equal to the current value of the appearance of an electric arc.
  • the contacts of a switch are gold, the current of occurrence of an electric arc is approximately 0.3 ampere. In this case, it will suffice to limit the current to the current switch to a value less than 0.3 amps.
  • the simple limitation of the current to a non-zero value less than the value of occurrence of an electric arc is sufficient when the electrical load to be powered is resistive.
  • the load is inductive, it is necessary to proceed with the blocking of the current electronic limiter 2 in order to completely cut off the current in the electric power circuit and thus avoid overvoltages across the switch when it is opened.
  • the current switching device 1 may comprise on the electric power circuit, one or more switches (10, 10a, 10b, 10c, 10d, 10e) of current arranged in parallel and put in series with a current electronic limiter 2.
  • the electronic current limiter 2 is placed upstream of the current switches.
  • the electronic current limiter is set to let pass, once activated, a current having a value less than a determined threshold value, substantially equal to that of occurrence of an electric arc in the switch or switches 10 of current with which it is associated.
  • the switching device 1 comprises means 20 for controlling the current electronic limiter 2. These means 20 for controlling the current electronic limiter 2 control the activation or deactivation of the current electronic limiter 2. These control means have the particularity of being coupled to the current switches. Indeed, when a command to open or close the contacts is sent, for example by a user, a signal is received by the control means 20 which before or simultaneously with the transmission of this command to the current switches 10 , send an activation command to the electronic current limiter 2 placed upstream of the current switches. The activation of the current electronic limiter 2 is translated by an increase in its resistance in order to limit the current flowing towards the current switches.
  • the electronic current limiter 2 then limits the current to a value which, depending on the nature of the load, resistive or inductive, is zero or non-zero and in both cases lower than that of appearance of an electric arc in the switches. 10 of current.
  • the sending of the activation command to the current electronic limiter 2 and the sending of the switching command to the current switches 10 may therefore be, in a first variant, simultaneous, or in a second variant, delayed.
  • a delay is used between the sending of the two commands.
  • the switching command is sent to the current switches.
  • the control means may comprise, for example, a timer 200 set for a specified period of time after which they are responsible for sending the switching command to the current switches.
  • the current to the current switches 10 is maintained by the electronic current limiter 2 at a value lower than that of the current of an electric arc. which makes it possible to avoid the appearance of an electric arc and thus to avoid premature wear of the contacts of the current switches.
  • the control means 20 of the electronic current limiter 2 send a deactivation command to the current electronic limiter 2 in order to deactivate it. This is reflected in the electronic current limiter 2 by a reduction of its electrical resistance and thus by a restoration of the normal current to the current switches.
  • the current switches may be fabricated in a conventional electromechanical type technology. According to an alternative embodiment, these current switches 10 can be manufactured in a microsystems type of technology (micromechanical or MEMS or MEMS association and micromechanics). Current switch contacts manufactured in microsystem type technology have a small surface area and thickness. In order to preserve these contact surfaces, it is therefore essential to make the openings and the closures of the current switches without the appearance of an electric arc.
  • the current electronic limiter 2 is manufactured in a substrate adapted to power electronics, that is to say adapted to be integrated in a power supply circuit of an electric load, and will be example made on a JFET (junction field effect transistor) silicon (Si) or preferably silicon carbide (SiC) if the nominal voltage is greater than 400 Vac and if the electronic current limiter 2 must be integrated into a microsystem.
  • Silicon carbide has the particular advantage of having a small chip size and a low resistance in the on state, which limits heat dissipation. Limiting the heat dissipation in the current electronic limiter 2 is all the more important when the switches are small (for example in MEMS technology) because they exhibit a resistive behavior in the closed state.
  • the electronic current limiter 2 is designed to have a minimum resistance so as not to disturb the flow of current in the load C when the switch 10 is closed.
  • Other materials such as diamond, boron nitride (BN), aluminum nitride (AIN) or gallium nitride (GaN) are also perfectly suited to power electronics.
  • An electronic current limiter 2 of silicon carbide having a surface less than 10 mm 2 is able to limit the current for example to 1/10 th of its nominal value.
  • the electronic current limiter 2 produced for example on the basis of a silicon carbide JFET and one or more current switches manufactured using a microsystem type technology in the same component.
  • control means of the electronic current limiter are able to vary the resistor of the limiter, for example according to a ramp. determined.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Amplifiers (AREA)
EP06100168A 2005-01-18 2006-01-09 Schaltvorrichtung mit elektronischem Strombegrenzer Active EP1681694B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0550137A FR2880984B1 (fr) 2005-01-18 2005-01-18 Dispositif de commutation avec limiteur electronique de courant

Publications (2)

Publication Number Publication Date
EP1681694A1 true EP1681694A1 (de) 2006-07-19
EP1681694B1 EP1681694B1 (de) 2007-08-01

Family

ID=34953032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06100168A Active EP1681694B1 (de) 2005-01-18 2006-01-09 Schaltvorrichtung mit elektronischem Strombegrenzer

Country Status (6)

Country Link
US (1) US20060171088A1 (de)
EP (1) EP1681694B1 (de)
AT (1) ATE368930T1 (de)
DE (1) DE602006000049T2 (de)
ES (1) ES2289729T3 (de)
FR (1) FR2880984B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008153530A1 (en) * 2007-06-15 2008-12-18 General Electric Company Remote-operable micro-electromechanical system based over-current protection apparatus
WO2008153576A1 (en) * 2007-06-15 2008-12-18 General Electric Company Mems based motor starter with motor failure detection
US7546214B2 (en) 2006-09-28 2009-06-09 General Electric Company System for power sub-metering
US7554222B2 (en) 2007-11-01 2009-06-30 General Electric Company Micro-electromechanical system based switching
US7612971B2 (en) 2007-06-15 2009-11-03 General Electric Company Micro-electromechanical system based switching in heating-ventilation-air-conditioning systems
US7719257B2 (en) 2006-09-28 2010-05-18 General Electric Company Current sensing module and assembly method thereof
US7839611B2 (en) 2007-11-14 2010-11-23 General Electric Company Programmable logic controller having micro-electromechanical system based switching
US7944660B2 (en) 2007-06-15 2011-05-17 General Electric Company Micro-electromechanical system based selectively coordinated protection systems and methods for electrical distribution
US8072723B2 (en) 2007-06-19 2011-12-06 General Electric Company Resettable MEMS micro-switch array based on current limiting apparatus
US8144445B2 (en) 2007-06-12 2012-03-27 General Electric Company Micro-electromechanical system based switching
US8358488B2 (en) 2007-06-15 2013-01-22 General Electric Company Micro-electromechanical system based switching
EP3654358A1 (de) * 2018-11-15 2020-05-20 Infineon Technologies Austria AG Mems leistungsrelaisschaltung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8582254B2 (en) * 2009-05-29 2013-11-12 General Electric Company Switching array having circuitry to adjust a temporal distribution of a gating signal applied to the array
EP3091550B1 (de) * 2015-05-05 2024-02-21 Siemens Aktiengesellschaft Hybride schalteinrichtung
US11381079B1 (en) 2021-01-27 2022-07-05 Leach International Corporation System for protecting electromechanical switchgears and protection circuits in high-voltage applications

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375027A (en) * 1992-09-29 1994-12-20 General Dynamics Corporation Fail safe cartridge fire unit
DE19734589A1 (de) * 1997-04-13 1998-10-29 Elan Schaltelemente Gmbh Elektronischer Sicherheitsbaustein
DE19731269A1 (de) * 1997-07-22 1999-01-28 Hager Electro Gmbh Vorrichtung zum Schalten von elektrischen Kontakten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19927762A1 (de) * 1999-06-17 2001-01-04 Abb Research Ltd Neue elektrische Schalteinrichtung zum Überstromschutz
DE10062026A1 (de) * 2000-12-13 2002-07-04 Siemens Ag Elektronische Schalteinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375027A (en) * 1992-09-29 1994-12-20 General Dynamics Corporation Fail safe cartridge fire unit
DE19734589A1 (de) * 1997-04-13 1998-10-29 Elan Schaltelemente Gmbh Elektronischer Sicherheitsbaustein
DE19731269A1 (de) * 1997-07-22 1999-01-28 Hager Electro Gmbh Vorrichtung zum Schalten von elektrischen Kontakten

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7719257B2 (en) 2006-09-28 2010-05-18 General Electric Company Current sensing module and assembly method thereof
US7546214B2 (en) 2006-09-28 2009-06-09 General Electric Company System for power sub-metering
US8144445B2 (en) 2007-06-12 2012-03-27 General Electric Company Micro-electromechanical system based switching
US7885043B2 (en) 2007-06-15 2011-02-08 General Electric Company Remote-operable micro-electromechanical system based over-current protection apparatus
US7589942B2 (en) 2007-06-15 2009-09-15 General Electric Company MEMS based motor starter with motor failure detection
US7612971B2 (en) 2007-06-15 2009-11-03 General Electric Company Micro-electromechanical system based switching in heating-ventilation-air-conditioning systems
WO2008153530A1 (en) * 2007-06-15 2008-12-18 General Electric Company Remote-operable micro-electromechanical system based over-current protection apparatus
US7944660B2 (en) 2007-06-15 2011-05-17 General Electric Company Micro-electromechanical system based selectively coordinated protection systems and methods for electrical distribution
WO2008153576A1 (en) * 2007-06-15 2008-12-18 General Electric Company Mems based motor starter with motor failure detection
US8358488B2 (en) 2007-06-15 2013-01-22 General Electric Company Micro-electromechanical system based switching
CN101711446B (zh) * 2007-06-15 2013-12-25 通用电气公司 具有电动机故障检测的基于mems的电动机起动器
US8072723B2 (en) 2007-06-19 2011-12-06 General Electric Company Resettable MEMS micro-switch array based on current limiting apparatus
US7554222B2 (en) 2007-11-01 2009-06-30 General Electric Company Micro-electromechanical system based switching
US7839611B2 (en) 2007-11-14 2010-11-23 General Electric Company Programmable logic controller having micro-electromechanical system based switching
EP3654358A1 (de) * 2018-11-15 2020-05-20 Infineon Technologies Austria AG Mems leistungsrelaisschaltung
US11139125B2 (en) 2018-11-15 2021-10-05 Infineon Technologies Austria Ag Power relay circuit

Also Published As

Publication number Publication date
ATE368930T1 (de) 2007-08-15
EP1681694B1 (de) 2007-08-01
US20060171088A1 (en) 2006-08-03
ES2289729T3 (es) 2008-02-01
DE602006000049D1 (de) 2007-09-13
DE602006000049T2 (de) 2008-04-17
FR2880984B1 (fr) 2007-02-23
FR2880984A1 (fr) 2006-07-21

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