WO2012146876A1 - Actionneur électromagnétique à générateur magnétique - Google Patents
Actionneur électromagnétique à générateur magnétique Download PDFInfo
- Publication number
- WO2012146876A1 WO2012146876A1 PCT/FR2012/050938 FR2012050938W WO2012146876A1 WO 2012146876 A1 WO2012146876 A1 WO 2012146876A1 FR 2012050938 W FR2012050938 W FR 2012050938W WO 2012146876 A1 WO2012146876 A1 WO 2012146876A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- electromagnetic actuator
- control means
- core
- magnetic
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/26—Electromagnetic mechanisms with windings acting in opposition
Definitions
- the present invention relates to an electromagnetic actuator with a magnetic generator whose immunity to electric shocks has been enhanced. It relates in particular to electromechanical actuators which are used in combination with trigger locks of electrical line protection devices, for example differential products and / or disjunction.
- the actuators integrated in such apparatuses conventionally comprise a yoke of magnetic material, at least one coil surrounding a movable magnetic core forming a magnetic circuit with said yoke, said core being guided between a rest position and actuation positions caused by the appearance of current in the coil.
- the core generally of elongated configuration, then serves as a firing pin for a mechanical lock whose triggering results in quickly dismissing one or more mobile contact contacts (s) fixed (s) corresponding (s).
- the basic device of the actuator also comprises return means of the movable core in its rest position, allowing somehow to reset the actuator in the absence of the conditions necessary to move the movable core, or after return to the normal.
- the circuits protected by electrical devices such as those mentioned above may be subjected to shock waves resulting from electrical phenomena outside the protected line or circuit, coming for example from the lightning which is then likely to create brutal overvoltages, without direct report with the state and / or the operation of said line and / or the protected circuit.
- shock waves resulting from electrical phenomena outside the protected line or circuit, coming for example from the lightning which is then likely to create brutal overvoltages, without direct report with the state and / or the operation of said line and / or the protected circuit.
- such phenomena are not the problem for which the protection device is initially intended.
- the electromagnetic actuator of the invention is characterized in that it comprises at least two coils respectively connected to first and second independent control means, at least one primary coil being managed by the first means for controlling the displacement of the movable core and at least one secondary coil being positioned relative to the primary coil (s) and actuated by the second control means to vary the magnetic field generated by the or the primary coil (s).
- the coils share the same magnetic circuit, are controlled independently, and provide different functions. At least one is assigned to the actuator function, while at least one other, which does not share the same control means, is used to interact with the first actuator function, under certain conditions which are in practice managed by the second actuator means. ordered.
- the primary (s) and secondary (s) coils are arranged relative to one another so that the effect of the field generated by one opposes the effect of the field generated by the seconds for the mobile core, the resulting magnetic flux applying to said core being the result of the subtraction of the flux of the primary coils and the secondary coils.
- the actuator of the invention may comprise a primary coil connected in series to a secondary coil, which are wound in order to generate opposite magnetic fields.
- control means are provided in such a way that only the primary coil (s) is (are) activated in a normal operating mode, the secondary coil (s) (s) being ) being activated only in the event of a very large surge arising from phenomena external to the line, so as to compensate the force generated in the mobile core by the overall magnetic field created by the normal operation of the line and by said phenomena.
- the primary coil corresponds to the nominal coil of the actuator, to which is added a winding intended to enhance the immunity of the product by absorbing the consequences on the mobile core of transient overvoltages.
- the varistors used hitherto arranged apart from the actual actuator, have a size that requires a separate consideration of their implementation in the space possibly available.
- the solution of the invention allows the management of the problem, namely the improvement of the immunity to shock generated by overvoltages, at the same level of the actuator, in connection with the winding which it is always endowed.
- the secondary coil is in fact, according to a possible configuration of the invention, connected to second threshold control means provided to make it active from a predetermined voltage value at its terminals.
- Said threshold means can then for example consist of such a varistor, but whose size is then much lower than that of the varistors used in the prior art, simply to makeumble the portion of the winding inducing in the mobile core a opposite force to that induced by the turns of the first "nominal" portion, beyond a certain voltage threshold. The function is not performed in the same way.
- the threshold component may be an avalanche diode whose characteristic is similar to that of a varistor. Said characteristic, which determines the choice of the component, depends only on the chosen voltage threshold.
- said second control means may consist of transient voltage suppression means.
- the primary coil is also connected to a control stage, consisting of a voltage or current threshold control component.
- a control stage consisting of a voltage or current threshold control component.
- the latter is preferably selected from the following components: varistor-type transient voltage suppressor component or avalanche diode, Zener diode, IGBT transistors, bipolar transistor, thyristor, triac, MOSFET transistor and relay.
- the actuator of the invention comprises a yoke (1) surrounding a coil consisting of two portions, a portion (2) N1 turns, which is dimensioned so that it can act as a nominal coil, and a portion (3) N2 turns, surrounding a movable core (4) biased in its rest position by a spring (5) disposed at one of its ends (it is at note that this reminder system could be replaced by a technical equivalent of the permanent magnet or permanent current type flowing in the N2 turns in order to return the mobile core to its rest position when the magnetic force falls below a certain level) .
- the core (4) is guided in an opening (5) of the yoke (1) allowing it to move in the direction of arrow F in the direction of a mechanical lock (not shown) adapted to be triggered in case of contact with the right end of the movable core (4).
- the two coils are connected in series in the protected line, that is to say typically between phase Ph and neutral N, a control component (6) of threshold type such as a transistor, a thyristor or a triac being disposed between the intermediate point of connection (I) between the coils (2) and (3) and the connection to the neutral N.
- a threshold component (7) of the varistor or diode type avalanche is also connected to the neutral N.
- Other equivalent components such as those mentioned above, could also be used where appropriate.
- the operation is as follows: when the control component (6) becomes on, in the normal operating mode, the threshold component (7) is not activated and only the N1 turns of the portion (2) of the coil are traveled by a current.
- the magnetic force generated by the magnetic field caused by the appearance of an abnormal current in the coil (2) allows the displacement of the movable core (4) if necessary, and the tripping lock.
- This tripping is typically performed by a bimetallic strip in case of overload of intensity, and by the actuator of the invention in case of short circuit.
- the transient voltage is much higher than what is normally handled, and the threshold component (7), for example a varistor, allows the current to pass.
- the portion (3) of the coil, that is to say the residual N2 turns, are in this case also traversed by of the current. However, they induce a magnetic force opposite to that induced by the turns N1, and the resulting force does not necessarily cause the displacement of the movable core (4) for triggering the lock, in the event that the line is not subject to abnormal intrinsic conditions.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12724688.2A EP2702601B1 (fr) | 2011-04-29 | 2012-04-27 | Actionneur électromagnétique à générateur magnétique |
| AU2012247265A AU2012247265B2 (en) | 2011-04-29 | 2012-04-27 | Electromagnetic actuator having magnetic generator |
| CN201280029473.3A CN103608887B (zh) | 2011-04-29 | 2012-04-27 | 具有磁场发生器的电磁致动器 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1101341A FR2974662B1 (fr) | 2011-04-29 | 2011-04-29 | Actionneur electromagnetique a generateur magnetique |
| FR1101341 | 2011-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012146876A1 true WO2012146876A1 (fr) | 2012-11-01 |
Family
ID=46197611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2012/050938 Ceased WO2012146876A1 (fr) | 2011-04-29 | 2012-04-27 | Actionneur électromagnétique à générateur magnétique |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2702601B1 (fr) |
| CN (1) | CN103608887B (fr) |
| AU (1) | AU2012247265B2 (fr) |
| FR (1) | FR2974662B1 (fr) |
| WO (1) | WO2012146876A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3028662B1 (fr) * | 2014-11-14 | 2016-12-16 | Hager-Electro Sas | Actionneur electromagnetique a bobines multiples |
| FR3028663B1 (fr) * | 2014-11-14 | 2016-12-16 | Hager-Electro Sas | Actionneur electromagnetique a bobines multiples |
| EP3156352B1 (fr) * | 2015-10-13 | 2019-02-27 | Roche Diagniostics GmbH | Système de distribution d'échantillons de laboratoire et système d'automatisation de laboratoire |
| EP3279919A1 (fr) * | 2016-08-01 | 2018-02-07 | Schneider Electric Industries SAS | Mécanisme de déclenchement magnétique à deux segments et protection de secours comprenant un tel mécanisme |
| CN107680888A (zh) * | 2016-08-01 | 2018-02-09 | 施耐德电器工业公司 | 两段式磁脱扣机构和包括该机构的后备保护器 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3156849A (en) * | 1959-03-16 | 1964-11-10 | Texas Instruments Inc | Circuit-breaking apparatus |
| US3818275A (en) * | 1973-01-30 | 1974-06-18 | Westinghouse Electric Corp | Circuit interrupter including improved trip circuit using current transformers |
| US4013926A (en) * | 1975-07-11 | 1977-03-22 | Westinghouse Electric Corporation | Circuit breaker with improved trip actuator and undervoltage release mechanism |
| EP0237296A2 (fr) * | 1986-03-07 | 1987-09-16 | Eaton Corporation | Assemblage d'un interrupteur à verrouillage magnétique et à déverrouillage automatique sensible au courant |
| US5684443A (en) * | 1995-12-21 | 1997-11-04 | Philips Electronics North America Corporation | False-trip-resistant circuit breaker |
| US5737161A (en) * | 1996-11-25 | 1998-04-07 | Raychem Corporation | Overcurrent protection device and arrangement |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5040784B1 (fr) * | 1970-11-20 | 1975-12-26 | ||
| CH604365A5 (fr) * | 1976-12-22 | 1978-09-15 | Bbc Brown Boveri & Cie | |
| FR2803086B1 (fr) * | 1999-12-22 | 2002-02-15 | Schneider Electric Ind Sa | Dispositif de protection de defaut electrique |
-
2011
- 2011-04-29 FR FR1101341A patent/FR2974662B1/fr active Active
-
2012
- 2012-04-27 CN CN201280029473.3A patent/CN103608887B/zh active Active
- 2012-04-27 AU AU2012247265A patent/AU2012247265B2/en active Active
- 2012-04-27 EP EP12724688.2A patent/EP2702601B1/fr active Active
- 2012-04-27 WO PCT/FR2012/050938 patent/WO2012146876A1/fr not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3156849A (en) * | 1959-03-16 | 1964-11-10 | Texas Instruments Inc | Circuit-breaking apparatus |
| US3818275A (en) * | 1973-01-30 | 1974-06-18 | Westinghouse Electric Corp | Circuit interrupter including improved trip circuit using current transformers |
| US4013926A (en) * | 1975-07-11 | 1977-03-22 | Westinghouse Electric Corporation | Circuit breaker with improved trip actuator and undervoltage release mechanism |
| EP0237296A2 (fr) * | 1986-03-07 | 1987-09-16 | Eaton Corporation | Assemblage d'un interrupteur à verrouillage magnétique et à déverrouillage automatique sensible au courant |
| US5684443A (en) * | 1995-12-21 | 1997-11-04 | Philips Electronics North America Corporation | False-trip-resistant circuit breaker |
| US5737161A (en) * | 1996-11-25 | 1998-04-07 | Raychem Corporation | Overcurrent protection device and arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2974662A1 (fr) | 2012-11-02 |
| FR2974662B1 (fr) | 2016-04-15 |
| EP2702601A1 (fr) | 2014-03-05 |
| CN103608887A (zh) | 2014-02-26 |
| AU2012247265B2 (en) | 2015-11-05 |
| CN103608887B (zh) | 2018-04-17 |
| EP2702601B1 (fr) | 2016-07-27 |
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