WO2018019384A1 - Interrupteur servant à court-circuiter un module d'un convertisseur multi-étage et procédé permettant de court-circuiter le module - Google Patents

Interrupteur servant à court-circuiter un module d'un convertisseur multi-étage et procédé permettant de court-circuiter le module Download PDF

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Publication number
WO2018019384A1
WO2018019384A1 PCT/EP2016/068163 EP2016068163W WO2018019384A1 WO 2018019384 A1 WO2018019384 A1 WO 2018019384A1 EP 2016068163 W EP2016068163 W EP 2016068163W WO 2018019384 A1 WO2018019384 A1 WO 2018019384A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact piece
switch
short
contact
module
Prior art date
Application number
PCT/EP2016/068163
Other languages
German (de)
English (en)
Inventor
Daniel BÖHME
Thomas KÜBEL
Steffen PIERSTORF
Daniel Schmitt
Frank Schremmer
Torsten Stoltze
Marcus Wahle
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2016/068163 priority Critical patent/WO2018019384A1/fr
Publication of WO2018019384A1 publication Critical patent/WO2018019384A1/fr

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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

  • the invention relates to a switch for short-circuiting a module of a Mehreasenumrichters and a method for short ⁇ close the module according to the preambles of claims 1 and 10.
  • FIG. 1 A switch for short-circuiting a module of a Mehreasenumrichters and a method for short ⁇ close the module according to the preambles of claims 1 and 10.
  • Modular multi-stage converters have a plurality of modules connected in series, each module having electrical valves, for example in the form of
  • IGBT Insulated Gate Bipolar Transistors
  • the object of the invention is to provide a generic
  • the solution is based on the switch characterized by a) an energy storage, through which the first contact piece is acted upon when the switch is open with a force acting in the direction of the second contact piece, b) a mechanical see spacer (support member), the open switch between the two contact pieces is arranged and holds the force applied first contact piece in a pre ⁇ given distance to the second contact piece, wherein the loading force brings the first contact piece after release by the spacer on the second contact piece to the plant, and c) a short-circuiting, the case of concern predetermined voltage at the two contact pieces establishes a temporally upstream electrical connection between the at ⁇ spaced contact pieces, which is connected to a removal of the spacer.
  • the spacer is formed from a hollow cylinder, applied to the front sides of the contact pieces force applied and learns through the temporally upstream electrical connection elimination by its destruction.
  • the spacer is easy to destroy while making an electrical connection when the electrical connection in advance is through an arc that (as a consequence) destroys the hollow cylinder.
  • the effort can be further reduced if the arc ignites independently.
  • an ignition device ignites the arc.
  • the hollow cylinder is filled with a (suitable) gas or a vacuum is formed in the hollow cylinder.
  • the energy storage is designed as a helical spring.
  • the solution provides for the following method steps in relation to the method:
  • the combination of the two switching techniques yields the following result: If an overvoltage occurs on a module due to an error, an arc ignites, for example, due to the spacing of the two contact pieces, which is set correspondingly for a vacuum. The module is already bridged with the arc and thus removed from the Rei ⁇ henscrien. The destructive effect of the arc is used directly in time to remove a support structure in the form of the spacer, whereby the mechanical switching technology is released. The anschmanende mechanical closing of the switch leads to Ver ⁇ delete the arc and to a permanent connection of the two contact pieces together.
  • Fig. 2 shows the switch of FIG. 1 with destroyed spacer and an arc, which electrically connects the two contacts and
  • Fig. 3 shows the switch of FIG. 2 with adjacent contact pieces.
  • Fig. 1 shows a switch 1 (bypass switch) for a module of a multi-stage converter in which a plurality of modules are electrically connected in series (all not shown).
  • the switch 1 comprises a housing 2 through which terminals 3 are led outwards, via which the switch 1 is connected to the module and connected in parallel thereto.
  • the switch 1 has a movable (first) contact piece 4 and a fixed (second) contact piece 5, which are electrically connected to the terminals 3.
  • the contact pieces 4, 5 abut each other (see Fig. 3) and when the switch 1 is open they are spaced from each other (see Fig. 1).
  • the see between the two contact pieces 4, 5 is arranged, wherein the two contact pieces 4, 5 relative to FIG. 1 abut the top and bottom of the spacer 6.
  • the spacer 6 is here a hollow cylinder 6a made of glass.
  • metal plates 7 are arranged frontally, which close the two openings of the hollow cylinder 6a.
  • a vacuum 8a In the interior 8 there is a vacuum 8a;
  • the hollow cylinder 6a may also be filled with a suitable gas.
  • the movable contact piece 4 is a Ener ⁇ gie Boulevards applied in the form of a twisted coil spring 9a of the force F 9, wherein the force F acts in the direction of the fixed contact piece. 5
  • the coil spring 9a is located between a metal plate 10 and the contact piece 4 and is compressed in Fig. 1 and thus biased.
  • the metal ⁇ plate 10 is electrically connected to the upper terminal 3 and with ⁇ means of a compound in the form of a movable cable 10a with the contact piece. 4 The connection does not take place here via the coil spring 9a.
  • the coil spring 9a pushes the movable contact piece 4 in Fig. 1 down against the upper end face of the hollow cylinder 6a, on which the upper contact piece 4 rests and is supported.
  • the Hohlzy ⁇ relieving 6a is supported here by way of example at the lower contact ⁇ piece 5 and forwards in this manner a force F on the lower contact piece 5 in the housing. 2
  • the introduction of the force F in the housing 2 can of course be done differently.
  • the metal plates 7 are formed (shaped) such that, in the event of a fault, ie when a predetermined voltage is applied or exceeded, ie in the event of overvoltage, at the module and thus at the terminals 3 of the parallel-connected switch 1, an arc 11 ignites automatically in order to bridge the distance between the two contact pieces 4, 5, ie to short-circuit the module.
  • the arc 11 can be actively ignited by an igniting the predetermined voltage monitoring ignition device.
  • the switch 1 with ignited arc 11 is shown schematically.
  • the arc 11 here forms a short-circuiter IIa, i. he makes an electrical connection between the two contact pieces 4, 5, which short-circuits the module.
  • the connection via the arc 11 takes place within milliseconds, ie in the shortest possible time, while the two contact pieces 4, 5 are still spaced apart.
  • the arc 11 Due to the relatively large current flowing through the module of a multi-stage converter and short-circuited module through the arc 11, the arc 11 has a very high energy. Almost immediately after ignition, this energy destroys the hollow cylinder 6a (inter alia due to the generated heat) and thus the spacer 6, on which the movable contact piece 4 is supported. 7th Alternatively, the time upstream electrical Ver ⁇ bond can be effected, for example, also via a series arrangement of a controlled electrical switching element, for example a Thyris ⁇ gate, and a bi-metal conductor, wherein the prohibit gene of the bimetal conductor destroyed the hollow cylinder 6a.
  • a controlled electrical switching element for example a Thyris ⁇ gate
  • the movable contact piece 4 Due to the omission of the hollow cylinder 6a and thus the support, the movable contact piece 4 is released. Accordingly, the coil spring 9a (the energy storage 9) moves the movable contact piece 4 down to the stationary contact 5. During the entire course of the movement of the movable contact piece 4, the arc 11 is maintained and thus the module is short-circuited. When the be ⁇ movable contact piece 4 on the fixed contact piece 5, the arc 11 expires and the current flows through the two contact pieces 4, 5 abutting each other.
  • the method of short-circuiting of the module has general ⁇ my the method steps of: I. producing a very fast electrical connection between the two
  • the spacer 6 is generally a sacrificial construction, which is destroyed to short-circuit the module in each case, so sacrificed.
  • the Kochkonstruk ⁇ tion is a hollow cylinder 6a of glass.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

L'invention concerne un interrupteur (1) servant à court-circuiter un module d'un convertisseur multi-étage, comprenant un premier élément de contact (4) mobile qui s'appuie contre un deuxième élément de contact (5) lorsque l'interrupteur est fermé. Le temps de coupure est considérablement réduit grâce à a) un accumulateur d'énergie (9) au moyen duquel le premier élément de contact (4) est soumis à une force (F) agissant en direction du deuxième élément de contact (5) lorsque l'interrupteur est ouvert, b) une pièce d'écartement (6) mécanique qui est disposée entre les deux éléments de contact (4, 5) lorsque l'interrupteur (1) est ouvert et maintient le premier élément de contact (4) soumis à la force à une distance prédéfinie du deuxième élément de contact (5), la force (F) d'action amenant le premier élément de contact (4) en appui contre le deuxième élément de contact (5) après qu'il a été libéré de la pièce d'écartement (6), et c) un court-circuiteur (11a) qui, en cas d'application d'une tension prédéfinie aux deux éléments de contact (4, 5), réalise une connexion électrique branchée préalablement entre les deux éléments de contact (4, 5) espacée, laquelle connexion est associée à une élimination de la pièce d'écartement (6). Le procédé permettant de court-circuiter comprend les étapes correspondantes.
PCT/EP2016/068163 2016-07-29 2016-07-29 Interrupteur servant à court-circuiter un module d'un convertisseur multi-étage et procédé permettant de court-circuiter le module WO2018019384A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/068163 WO2018019384A1 (fr) 2016-07-29 2016-07-29 Interrupteur servant à court-circuiter un module d'un convertisseur multi-étage et procédé permettant de court-circuiter le module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/068163 WO2018019384A1 (fr) 2016-07-29 2016-07-29 Interrupteur servant à court-circuiter un module d'un convertisseur multi-étage et procédé permettant de court-circuiter le module

Publications (1)

Publication Number Publication Date
WO2018019384A1 true WO2018019384A1 (fr) 2018-02-01

Family

ID=56609860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/068163 WO2018019384A1 (fr) 2016-07-29 2016-07-29 Interrupteur servant à court-circuiter un module d'un convertisseur multi-étage et procédé permettant de court-circuiter le module

Country Status (1)

Country Link
WO (1) WO2018019384A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020211951A1 (de) 2020-09-24 2022-03-24 Siemens Energy Global GmbH & Co. KG Kurzschluss-Schalteinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018953B (de) * 1954-04-23 1957-11-07 Emag Elek Zitaets Ges M B H Schnellausloesevorrichtung
EP1458072A1 (fr) * 2003-03-11 2004-09-15 Dehn + Söhne Gmbh + Co Kg Dispositif de court-circuit pour utilisation dans des arrangements de basse et moyenne tension
WO2007014816A1 (fr) * 2005-08-04 2007-02-08 Dehn + Söhne Gmbh + Co. Kg Dispositif de mise en court-circuit destine a etre utilise dans des installations basse et moyenne tension pour la protection des biens et des personnes
DE102014016938B3 (de) * 2014-09-25 2016-02-11 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzanordnung mit Kurzschließereinrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018953B (de) * 1954-04-23 1957-11-07 Emag Elek Zitaets Ges M B H Schnellausloesevorrichtung
EP1458072A1 (fr) * 2003-03-11 2004-09-15 Dehn + Söhne Gmbh + Co Kg Dispositif de court-circuit pour utilisation dans des arrangements de basse et moyenne tension
WO2007014816A1 (fr) * 2005-08-04 2007-02-08 Dehn + Söhne Gmbh + Co. Kg Dispositif de mise en court-circuit destine a etre utilise dans des installations basse et moyenne tension pour la protection des biens et des personnes
DE102014016938B3 (de) * 2014-09-25 2016-02-11 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzanordnung mit Kurzschließereinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020211951A1 (de) 2020-09-24 2022-03-24 Siemens Energy Global GmbH & Co. KG Kurzschluss-Schalteinrichtung
WO2022063556A1 (fr) 2020-09-24 2022-03-31 Siemens Energy Global GmbH & Co. KG Dispositif de coupure en court-circuit
DE102020211951B4 (de) 2020-09-24 2024-02-08 Siemens Energy Global GmbH & Co. KG Kurzschluss-Schalteinrichtung

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