EP3241226A1 - Dispositif de court-circuit électrique - Google Patents

Dispositif de court-circuit électrique

Info

Publication number
EP3241226A1
EP3241226A1 EP16704195.3A EP16704195A EP3241226A1 EP 3241226 A1 EP3241226 A1 EP 3241226A1 EP 16704195 A EP16704195 A EP 16704195A EP 3241226 A1 EP3241226 A1 EP 3241226A1
Authority
EP
European Patent Office
Prior art keywords
short
insulating
circuiting device
circuiting
insulating element
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
EP16704195.3A
Other languages
German (de)
English (en)
Other versions
EP3241226B1 (fr
Inventor
Frank Schremmer
Andreas Zenkner
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3241226A1 publication Critical patent/EP3241226A1/fr
Application granted granted Critical
Publication of EP3241226B1 publication Critical patent/EP3241226B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/004—Closing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H79/00—Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected

Definitions

  • Electric short-circuiting device The invention relates to electrical
  • Short-circuiting device as well as inverters equipped with submodules and short-circuiting devices.
  • IGBT modules ie transistor devices based on bipolar transistors with insulated gate electrode, are usually - with regard to the construction and connection technology - designed with bonding wires and directoryrobeen.
  • conventional IGBT modules are not reliably electrically conductive. This failure mechanism is particularly problematic in the case of a series connection of IGBTs and in the case of use in converters, in particular multilevel converters.
  • Short-circuiting device has an electrical contact arrangement with a first and second contact, which are separated from each other by an air gap.
  • Short-circuiting device also has a BewegMap scholar, which is separated in a disconnected position from the second contact and connects the first and second contact in a contact position.
  • the previously known short-circuiting device is equipped with an electrically triggerable drive device in the form of a pyrotechnic drive, which can move the moving contact piece from the disconnected position into the contact position.
  • the invention has for its object to provide an electrical short-circuiting device that can be used particularly universally circuitry.
  • Short-circuiting device has an electrically releasable drive device which is electrically isolated from the first and second contact by means of an insulating material, in particular solid insulating material, existing or at least insulating material having insulation.
  • An essential advantage of the potential separation of the electrically actuable drive unit provided according to the invention is that the short-circuiting device can also be used in electrical circuit arrangements in which the short-circuiting electrical contacts are subjected to different potentials on a timely basis, as is the case, for example, in four-quadrant actuators (US Pat. also called full bridges) is the case.
  • the short-circuiting device according to the invention is therefore particularly well suited to be used as a switchable short-circuit element in converters or their components, such as transformer devices.
  • Short-circuiting means is that the potential separation can be achieved particularly cost-effectively by means of the insulating material. It is considered advantageous if the
  • Short-circuiting device for potential separation has an at least two-part insulating device, which comprises a first fixed insulating element and a second, attached to the Bewegkon- contact piece and with this mitbewegtes insulating. By fastening the second insulating element to the moving contact piece, the potential separation always remains independent of the position of the moving contact piece.
  • first insulating element is at least partially sleeve-shaped and the second insulating element projects at least in sections into the first insulating element.
  • the second insulating element is preferably arranged in sections coaxially in the interior of the first insulating element.
  • the second insulating element with the first insulating element forms a telescopic structure, the length of which increases when moving the Beweg MembershipStücks after triggering of the drive device.
  • the second insulating element and the first insulating element are mechanically separated from one another by an intermediate sleeve.
  • an intermediate sleeve consists of a conductive material.
  • the first insulating element, the second insulating element and / or the intermediate sleeve are preferably rotationally symmetrical.
  • the first and second insulating - together alone or together with a third or further insulating and / or with an intermediate sleeve - form an electrically isolated interior, in which the drive device after a Activation a gas feeds to drive the moving contact piece, and whose internal volume depends on the position of the second insulating element and grows with the movement of the BewegWallet Symposiums.
  • a third insulating element is provided, then it is particularly advantageous if this is formed by an inner ring of electrically insulating material.
  • Such an inner ring preferably carries the drive means and is preferably held by the first insulating member or an intermediate sleeve disposed in the first insulating member.
  • the inner ring preferably closes the aforementioned electrically isolated interior to the outside on a side on which electrical connection contacts for the drive device are led out.
  • the first fixed insulating element is preferably indirectly or directly attached to the first contact with a view to a simple assembly.
  • the drive device is preferably a pyrotechnic drive device.
  • the invention also relates to a transistor device, in particular in the form of a bipolar transistor with insulated gate electrode.
  • Short-circuiting device is equipped, as has been described above.
  • the invention also relates to a converter, in particular multilevel converter, with a plurality of submodules.
  • the submodules can be formed, for example, as half-bridge or full-bridge circuits and connected to at least one series connection.
  • the invention provides that the converter has at least one
  • Short-circuiting device as has been described above, and / or at least one transistor device, as has been described above.
  • the short-circuiting device is connected in parallel with one of the submodules or a component of one of the submodules.
  • Short-circuiting device is connected in parallel to a capacitor of one of the submodules or connected in parallel via at least one transistor or at least one diode to a capacitor of one of the submodules and shorts after passing the BewegWallet foundeds from the disconnected position to the contact position, the capacitor of the submodule.
  • all submodules of the converter are each equipped with a short-circuiting device, as has been described above.
  • Short-circuiting device is connected in parallel with a capacitor of one of the submodules via at least one transistor or via at least one diode and shorts the capacitor of the submodule after transition of the BewegWalletubers from the disconnected position to the contact position.
  • Short-circuiting device is in its disconnected position
  • FIG. 2 shows the short-circuiting device according to FIG. 1 in the short-circuiting state or in the contact position of the moving contact piece
  • FIG. 3 shows an exemplary embodiment of an insulating device which is used for electrical insulation or electrical potential separation of a pyrotechnic drive device in the case of
  • Short-circuiting device according to Figures 1 and 2 can be used.
  • FIG. 1 shows a short-circuiting device 10, which has a first contact 20 and a second contact 30 spaced from the first contact 20.
  • the two contacts 20 and 30 are mechanically interconnected by a spacer 40 made of electrically insulating material.
  • the short-circuiting device 10 has a BewegMap Georgia 50, which is in the representation of Figure 1 in its disconnected position and leaves the two contacts 20 and 30 electrically isolated.
  • the short-circuiting device 10 furthermore has a pyrotechnic drive device 60, which can move the moving contact piece 50 along the direction of thrust S in FIG. 1 from left to right or in the direction of the second contact 30.
  • the pyrotechnic drive device 60 is electrically isolated from the first contact 20 and from the second contact 30; an isolation device for potential separation is not shown in detail in FIG. 1 for reasons of clarity.
  • FIG. 2 shows the short-circuiting device 10 according to FIG. 1 after the pyrotechnic drive device 60 has been ignited by means of an ignition signal ZS and gas G of the pyrotechnic drive device 60 has pushed the moving contact piece 50 along the direction of thrust S to the right in the direction of the second contact 30.
  • the moving contact piece 50 In the position of the moving contact piece 50 shown in FIG. 2, the latter connects the first contact 20 electrically to the second contact 30 and thus forms an electrical short circuit between the two contacts 20 and 30.
  • FIG. 3 shows an exemplary embodiment of an isolating device 100 which can be used for potential separation of the pyrotechnic drive device 60 in the case of the short-circuiting device 10 according to FIGS. 1 and 2.
  • FIG. 3 shows in the left half of the drawing the disconnected position of the moving contact piece 50 of the short-circuiting device 10 and in the right half of the picture the contact position of the moving contact piece 50; the two representations or image halves are separated from each other by the central axis M of the short-circuiting device 10.
  • the insulating device 100 has a first, fixed insulating element 110, a second insulating element 120 connected to the moving contact piece 50, a third insulating element in the form of an inner ring 130, and an intermediate sleeve 150 spatially disposed between the first stationary insulating element 110 and the second insulating element 120 is arranged.
  • the second insulating member 120 Since the second insulating member 120 is mechanically fixed to the BewegMap conferences 50, it is in the movement of the BewegMapcommuns 50 of that in the left half of the picture illustrated disconnected position in the contact position shown in the right half of the image with this moves, whereas the first insulating member 110 due to the fixed mounting on the first contact 20 does not change its location.
  • the telescopic structure formed by the first and second insulating members 110 and 120 is thus extended by the movement of the second insulating member 120.
  • the second insulating element 120 is composed of two electrically insulating and interconnected insulating sections 121 and 122.
  • the inner ring 130 serves to receive or to support the pyrotechnic drive device 60.
  • the first insulating element 110, the second insulating element 120, the inner ring 130 and the intermediate sleeve 150 are rotationally symmetrical.
  • the second insulating member 120 is preferably coaxially mounted both inside the first insulating member 110 and coaxially inside the intermediate sleeve 150.
  • the three insulating elements 110, 120 and 130 and the intermediate sleeve 150 together form a potential-separated inner space 160 within the insulating device 100 into which the pyrotechnic drive device 60 feeds the gas G after application of an ignition signal ZS (see FIG. 3, the second insulating element 120 is pushed upward in the illustration according to FIG. 3, whereby the moving contact piece 50 connected to the second insulating element 120 is pushed upwards and can reach its contact position (cf. , The potential separation or the electrical separation of the pyrotechnic drive device 60 from the first contact 20 takes place in the insulating device 100 according to Figure 3 by the three insulating elements 110, 120 and 130.
  • the intermediate sleeve 150 is preferably used for electromagnetic shielding of the pyrotechnic drive device 60 located inside and therefore preferably consists of conductive material.
  • the short-circuiting device 10 according to FIGS. 1 to 3 is preferably used for short-circuiting transistor devices, in particular insulated gate bipolar transistors, and / or for short-circuiting submodules of converters, in particular multilevel converters.

Landscapes

  • Air Bags (AREA)
  • Fuses (AREA)

Abstract

L'invention concerne entre autres un dispositif de court-circuit électrique (10) comportant un ensemble de contacts électriques qui comprend : un premier et un second contact (20, 30) qui sont espacés l'un de l'autre, une pièce de contact mobile (50) qui sépare les deux contacts (20, 30) dans une position de séparation et qui relie le premier et le second contact (20, 30) entre eux dans une position de contact, et un dispositif d'entraînement (60) à déclenchement électrique destiné à déplacer la pièce de contact mobile (50) de la position de séparation à la position de contact. Selon l'invention, le dispositif d'entraînement (60) à déclenchement électrique est isolé galvaniquement vis-à-vis du premier et du second contact (20, 30) au moyen d'un dispositif d'isolation (100) constitué d'un matériau isolant ou comportant au moins un matériau isolant.
EP16704195.3A 2015-03-02 2016-02-11 Dispositif de court-circuit électrique Active EP3241226B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015203646.4A DE102015203646A1 (de) 2015-03-02 2015-03-02 Elektrische Kurzschließereinrichtung
PCT/EP2016/052895 WO2016139039A1 (fr) 2015-03-02 2016-02-11 Dispositif de court-circuit électrique

Publications (2)

Publication Number Publication Date
EP3241226A1 true EP3241226A1 (fr) 2017-11-08
EP3241226B1 EP3241226B1 (fr) 2020-04-01

Family

ID=55353200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16704195.3A Active EP3241226B1 (fr) 2015-03-02 2016-02-11 Dispositif de court-circuit électrique

Country Status (4)

Country Link
EP (1) EP3241226B1 (fr)
CN (1) CN208548324U (fr)
DE (1) DE102015203646A1 (fr)
WO (1) WO2016139039A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3698392A1 (fr) * 2017-12-11 2020-08-26 Siemens Aktiengesellschaft Dispositif de court-circuit
DE102018218238A1 (de) 2018-10-24 2020-04-30 Rolls-Royce Deutschland Ltd & Co Kg Überwachung und Auslösung von elektrischen Sicherungen
EP3696842A1 (fr) * 2019-02-13 2020-08-19 ABB Schweiz AG Commutateur de fermeture et appareillage de commutation
GB201912775D0 (en) * 2019-09-05 2019-10-23 Eaton Intelligent Power Ltd Pyrotechnic switching and interruption apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712387B4 (de) * 1996-04-27 2005-12-08 Delphi Technologies, Inc., Troy Pyrotechnisches Schaltelement für elektrische Stromkreise
DE19916328A1 (de) * 1999-04-12 2000-10-19 Moeller Gmbh Kurzschließer
US6839209B2 (en) * 2002-06-14 2005-01-04 Eaton Corporation Shorting switch and system to eliminate arcing faults in power distribution equipment
DE102010010669A1 (de) 2010-03-04 2011-09-08 Siemens Aktiengesellschaft Schalter mit beidseitig fest verschienten Anschlussklemmen
WO2013185815A1 (fr) * 2012-06-13 2013-12-19 Abb Technology Ltd Ensemble commutateur de dérivation
DE102014110825A1 (de) * 2014-07-30 2014-09-18 Peter Lell Elektrischer Schalter, insbesondere für hohe Spannungen und/oder hohe Ströme

Also Published As

Publication number Publication date
CN208548324U (zh) 2019-02-26
DE102015203646A1 (de) 2016-09-08
EP3241226B1 (fr) 2020-04-01
WO2016139039A1 (fr) 2016-09-09

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