EP4500565B1 - Bidirektionales doppelpoliges doppelbruchschütz mit umgekehrten magnetfeldern - Google Patents

Bidirektionales doppelpoliges doppelbruchschütz mit umgekehrten magnetfeldern

Info

Publication number
EP4500565B1
EP4500565B1 EP23720647.9A EP23720647A EP4500565B1 EP 4500565 B1 EP4500565 B1 EP 4500565B1 EP 23720647 A EP23720647 A EP 23720647A EP 4500565 B1 EP4500565 B1 EP 4500565B1
Authority
EP
European Patent Office
Prior art keywords
double
moving
contact
contactor
pole
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.)
Active
Application number
EP23720647.9A
Other languages
English (en)
French (fr)
Other versions
EP4500565A1 (de
Inventor
Guillaume PRIEUR
Cecil BELTAN
Arnaud BADAULT
Kévin ENOUF
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.)
Safran Electrical and Power SAS
Original Assignee
Safran Electrical and Power 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 Safran Electrical and Power SAS filed Critical Safran Electrical and Power SAS
Publication of EP4500565A1 publication Critical patent/EP4500565A1/de
Application granted granted Critical
Publication of EP4500565B1 publication Critical patent/EP4500565B1/de
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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the technical field of the invention is that of contactor chambers.
  • the invention relates to a double pole, double break, bidirectional contactor, which is adapted to be mounted on busbars.
  • a contactor is obtained which is compact and can be used in electrical power distribution, particularly in an aircraft.
  • a contactor is a remote-controlled electrical switch used to establish or interrupt the flow of an electric current.
  • the contactor can be single-pole, two-pole, three-pole or four-pole, depending on whether it has one, two, three or four power contacts (poles).
  • bidirectional bipolar or double pole double-break contactor (translation contactor).
  • translation contactor a bidirectional bipolar or double pole double-break contactor
  • bidirectional double pole double-break contactor makes it possible, for example, to simultaneously cut off the positive terminal and the negative terminal of an HVDC battery.
  • Arc blowing in the contactor is a magnetic blowing by permanent magnet. This is a proven technique, which is found in high voltage direct current (HVDC) contactors and circuit breakers. It generates a magnetic field which, by interacting with the arc, allows it to move according to the Laplace force.
  • HVDC high voltage direct current
  • the arc guides direct the arcs to their respective fin blocks, with the fin blocks serving as arc extinguishing devices.
  • Each block allows an arc directed toward the block to be split and extinguished.
  • the contactor comprises, on the one hand, first and second fixed contacts 30, 31 and, on the other hand, first and second movable contacts 20, 21 on a movable bridge 2.
  • the first movable contact 20 is opposite the first fixed contact 30 and the second movable contact 21 is opposite the second fixed contact 31.
  • the figure 2 represents the movable bridge 2 in the open state. When the movable bridge 2 is in the closed state, a current i can move from the first fixed contact 30 to the second fixed contact 31 by crossing the movable bridge 2.
  • the contactor is said to be bidirectional, because the electrical flow of the current can be reversed in such a way that the current moves from the second fixed contact 31 to the first fixed contact 30 crossing the movable bridge 2, the direction of the physical current being reversed at the contacts 30, 20, 31, 21.
  • a double-pole double-break contactor 12 has two breaking chambers 1a, 1b.
  • busbar is an English term commonly used in the field of electrical distribution, which can be translated as “busbar” or “interconnection bar”, and which is an element allowing both a mechanical link and an electrical link
  • the two chambers are arranged parallel and adjacent (attached to each other), in order to minimize the bulk and to facilitate the exit of fixing lugs 8 for the installation of the contactor 12 in a distribution box 13.
  • figure 3 shows the installation of a double-pole, double-break, bidirectional contactor 12 in a distribution box 13 with a power busbar 15 and the directions of flow of the currents i.
  • One pole of the connector can thus be connected, at the output of the distribution box, by a wiring 16, to the “+” terminal of a battery 14, and the other pole connected to the “-” terminal of the battery 14.
  • FIG. 4 details a side view of a prior art double-pole double-break bidirectional contactor which can be mounted on busbars, the magnetic field B being in the same direction in the two breaking chambers 1a, 1b; the arcs when the power contacts open are also seen.
  • the two breaking chambers of the double pole connector of the prior art are separated by an internal wall 11 common to the two chambers and a single pair 7 of magnets (the North South orientation being indicated for each magnet) makes it possible to create a magnetic field B in each of the two breaking chambers, the two fields being oriented in the same direction in the two breaking chambers 1a, 1b.
  • the walls behind the fins create a blockage in the airflow, which can prevent the arc from entering the fins.
  • this is not a problem because holes can be created in the walls or completely removed, but the wall 11 separating the two chambers cannot be removed due to the risk of short circuit.
  • the inventors sought to design a double-pole, double-break, bidirectional contactor which is compact, so that it can be mounted on busbars, and in which the risks of short-circuiting between the arcs are minimized and the circulation of air flows is facilitated.
  • the contactor is characterized in that the first and second breaking chambers are arranged parallel and adjacent to each other, defining a joining zone, the first and second breaking chambers being in fluid communication at least partly in the joining zone; and in that there are four magnets and the pairs of magnets of the two poles are arranged so that the magnetic fields generated within the two poles are of parallel direction, but of opposite senses.
  • the joining zone is parallel to a direction of movement between the closed state and the open state of each of the two movable bridges.
  • the first and second cutting chambers are separated by an internal wall common to the two chambers, said internal wall being equipped with several through holes.
  • the through holes allow the passage of internal airflow between the two chambers.
  • the first and second breaking chambers are separated only in part by an internal wall, possibly provided with several through holes.
  • no internal wall separates the first and second cutting chambers.
  • the straight black arrows with thin lines represent the current direction
  • the large straight arrows with striped fill represent the magnetic field direction
  • the medium or small straight arrows with no fill represent the Laplace force direction and the arc travel direction.
  • circles with a dot or a cross represent a direction towards or away from the observer.
  • the invention consists of configuring the contactor so that the two magnetic fields produced in the two breaking chambers are parallel, but in opposite directions. This allows the electric arcs created when the power contacts of the two poles open to be pushed in the same direction.
  • a pair of magnets 7a, 7b is placed in each cutting chamber 1a, 1b and they are arranged so that the polarity of a magnet of a pair in a chamber is the opposite of the polarity of the magnet of the other pair arranged symmetrically with respect to the plane of symmetry.
  • the magnetic fields in the chambers are in opposite directions, as is the case when using two pairs of magnets 7a, 7b arranged as illustrated in the figure 6 for example (the figure 6 showing a top view of a contactor bidirectional double pole double cut-off switch mountable on busbar according to one embodiment of the invention, the magnetic fields being opposite in the two breaking chambers), the internal arcs 9 produced (i.e. those heading towards the inside of the contactor) are arranged diagonally to each other and therefore the risk of them joining is reduced.
  • the internal arcs 9 are not sent towards each other between the two extinguishing chambers 1a, 1b and it is then possible to reduce, or even eliminate, the internal wall separating the two extinguishing chambers. This has the effect of not blocking the internal air flows, and consequently, of not preventing the internal arcs from entering their respective fin blocks.
  • the two extinguishing chambers are arranged parallel and are joined to each other, thus defining a joining zone 10.
  • the internal wall common to the two extinguishing chambers can be replaced by a lightened internal wall, or the internal wall can be completely removed.
  • the two extinguishing chambers are thus in fluid communication in this joining zone.
  • the two breaking chambers can thus be separated from each other by a partially open internal wall 110 ( figure 8 ), such as a partition with several holes or a filter that lets air through.
  • the inner wall is made of an electrically insulating material. It can be a wall with several holes that can be made of a plastic material. But it is also possible to completely remove the inner wall ( figure 9 ). This results in optimized gas exchange within the contactor, which improves the quality of electric arc breaking.
  • the internal arcs produced when using the arc chutes in series do not face each other.
  • This allows the internal wall that usually separates the two chambers to be removed at least partially, blocking air flow and degrading contactor performance. This allows for less complicated insulation between the two chambers and a reduction in the risk of short-circuiting between the two internal arcs.
  • This also allows the use of the useful volume of the second chamber to send the internal arcs produced in the first chamber and vice versa.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (4)

  1. Zweipoliger bidirektionaler Schütz mit doppelter Unterbrechung, konfiguriert zur Montage auf zwei parallelen Sammelschienen, umfassend für jeden Pol eine Unterbrechungskammer (1a; 1b), in der angeordnet sind:
    - eine bewegliche Brücke (2a; 2b) zwischen einem geschlossenen und einem geöffneten Zustand, umfassend einen ersten beweglichen Kontakt (20a; 20b) und einen zweiten beweglichen Kontakt (21a; 21b);
    - ein erster fester Kontakt (30a; 31a), gegenüber dem ersten beweglichen Kontakt (20a; 20b), und ein zweiter fester Kontakt (30b; 31b), gegenüber dem zweiten beweglichen Kontakt (21a; 21b), wobei der erste und der zweite bewegliche Kontakt (20a; 20b; 21a; 21b) im geschlossenen Zustand mit dem ersten und dem zweiten festen Kontakt (30a; 31a) sind und wobei der erste und der zweite bewegliche Kontakt (20a; 20b; 21a); 21b) im geöffneten Zustand von dem ersten beziehungsweise dem zweiten festen Kontakt (30a; 31a; 30b; 31b) beabstandet sind;
    - ein Paar Magnete (7a; 7b), die geeignet sind, ein Magnetfeld mit konstanter Richtung zu erzeugen, so dass eine Magnetkraft erzeugt wird, um einen Lichtbogen zu bewegen, der zwischen den festen Kontakten (30a; 30b; 31a; 31b) und den beweglichen Kontakten (20a; 20b; 21a; 21b) der beweglichen Brücke (2a; 2b) entsteht, die von einem geschlossenen in einen geöffneten Zustand übergehen;
    - vier Lamellenblöcke (4a; 4b), die jeweils Folgendes besitzen:
    - ein erstes (41) und ein zweites Ende (42);
    - Lamellen (43), die zwischen dem ersten Ende (41) und dem zweiten Ende (42) des entsprechenden Lamellenblocks (4a; 4b) liegen;
    - vier Bogenführungen (5a; 5b), wobei jede Bogenführung von einem beweglichen Kontakt (20a; 20b; 21a; 21b) der beweglichen Brücke (2a; 2b) zu ihrem jeweiligen Lamellenblock (4a; 4b) führt;
    wobei die beiden Unterbrechungskammern so eingerichtet sind, dass sie gleichzeitig Bögen mit einer ersten Stromrichtung für einen Pol und Bögen mit einer zweiten Stromrichtung für den anderen Pol abschalten, wobei sich die erste und die zweite Stromrichtung entgegengesetzt sind;
    wobei der Schütz dadurch gekennzeichnet ist, dass die erste und die zweite Unterbrechungskammer (1a; 1b) parallel angeordnet sind und aneinander angrenzen, wodurch ein Andockbereich (10) definiert wird, der parallel zu einer Bewegungsrichtung zwischen dem geschlossenen Zustand und dem geöffneten Zustand jeder der beiden beweglichen Brücken ist, wobei die erste und die zweite Unterbrechungskammer mindestens teilweise in Fluidverbindung in dem Andockbereich(10) sind;
    und dass es vier Magnete gibt und die Magnetpaare (7a; 7b) der beiden Pole so angeordnet sind, dass die innerhalb der beiden Pole erzeugten Magnetfelder in paralleler, aber entgegengesetzter Richtung sind.
  2. Schütz nach Anspruch 1, wobei die erste und die zweite Unterbrechungskammer durch eine für die beiden Kammern gemeinsame Innenwand getrennt sind, wobei die Innenwand 110 mit mehreren Durchgangslöchern versehen ist.
  3. Schütz nach Anspruch 1, wobei die erste und die zweite Unterbrechungskammer nur teilweise durch eine Innenwand getrennt sind, die eventuell mit mehreren Durchgangslöchern versehen ist.
  4. Schütz nach Anspruch 1, wobei keine Innenwand die erste und die zweite Unterbrechungskammer trennt.
EP23720647.9A 2022-03-29 2023-03-29 Bidirektionales doppelpoliges doppelbruchschütz mit umgekehrten magnetfeldern Active EP4500565B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2202798A FR3134224B1 (fr) 2022-03-29 2022-03-29 Contacteur bidirectionnel double pole à double coupure à champs magnétiques inversés
PCT/FR2023/050448 WO2023187295A1 (fr) 2022-03-29 2023-03-29 Contacteur bidirectionnel double pole à double coupure à champs magnétiques inversés

Publications (2)

Publication Number Publication Date
EP4500565A1 EP4500565A1 (de) 2025-02-05
EP4500565B1 true EP4500565B1 (de) 2025-09-17

Family

ID=82196706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23720647.9A Active EP4500565B1 (de) 2022-03-29 2023-03-29 Bidirektionales doppelpoliges doppelbruchschütz mit umgekehrten magnetfeldern

Country Status (5)

Country Link
US (1) US20250201497A1 (de)
EP (1) EP4500565B1 (de)
CN (1) CN118946945A (de)
FR (1) FR3134224B1 (de)
WO (1) WO2023187295A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH481481A (it) * 1968-04-13 1969-11-15 Bassani Spa Interruttore automatico con camera deionizzante
EP2463879A1 (de) * 2010-12-07 2012-06-13 Eaton Industries GmbH Schalter mit Löschkammer
EP2590192A1 (de) * 2011-11-02 2013-05-08 Eaton Industries GmbH Schalter für einen mehrpoligen Gleichstrombetrieb
EP2597664A1 (de) * 2011-11-24 2013-05-29 Eaton Industries GmbH Schalter für Gleichstrombetrieb mit mindestens einer Schaltkammer
US8912461B2 (en) * 2012-01-23 2014-12-16 General Electric Company Arc chute assembly and method of manufacturing same
DE102012112202A1 (de) * 2012-12-13 2014-06-18 Eaton Electrical Ip Gmbh & Co. Kg Polaritätsunabhängiges Schaltgerät zum Führen und Trennen von Gleichströmen

Also Published As

Publication number Publication date
EP4500565A1 (de) 2025-02-05
FR3134224B1 (fr) 2024-05-03
FR3134224A1 (fr) 2023-10-06
WO2023187295A1 (fr) 2023-10-05
CN118946945A (zh) 2024-11-12
US20250201497A1 (en) 2025-06-19

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