EP2311058A1 - Actionneur electromagnetique a derivation de flux - Google Patents
Actionneur electromagnetique a derivation de fluxInfo
- Publication number
- EP2311058A1 EP2311058A1 EP09794029A EP09794029A EP2311058A1 EP 2311058 A1 EP2311058 A1 EP 2311058A1 EP 09794029 A EP09794029 A EP 09794029A EP 09794029 A EP09794029 A EP 09794029A EP 2311058 A1 EP2311058 A1 EP 2311058A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- magnet
- electromagnetic actuator
- magnetic
- actuator according
- 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
Links
- 230000004907 flux Effects 0.000 title claims abstract description 23
- 230000005291 magnetic effect Effects 0.000 claims abstract description 29
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
- H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
- H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/14—Pivoting armatures
- H01F7/145—Rotary electromagnets with variable gap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
Definitions
- the present invention relates to a permanent magnet electromagnetic actuator conventionally comprising a magnetic armature, at least one movable pallet, a spring mechanism and electrical means comprising at least one conductor whose current variations make it possible to vary the flux in the magnetic circuit. to change the balance between the magnetic force and that of the spring.
- the object of the invention is to provide an actuator with very high sensitivity, that is to say operating with a minimum value of ampere / revolution generating however at at least one gap a flow variation sufficient to counterbalance the mechanical force and cause the movement of a pallet.
- the idea underlying the invention is to work on a flow bypass scheme, the change of the flux at the gap or air gaps being obtained indirectly because of a configuration of the magnetic circuit in which occurs an imbalance of the magnetic reluctances seen by the magnet.
- the conductor (s) capable of generating flow by passing the current through which it travels cooperates with one or more portions of the armature which is (are) closed, and therefore does not have an air gap but at least one equilibrium reluctance.
- the flow produced has an effect aimed at unbalancing the said reluctances seen by the magnet, which compensates for the imbalance and makes it possible to break - at the level of the gaps concerned by the flow variations - the equilibrium with the mechanical return forces.
- the actuator of the invention more precisely comprising a permanent magnet, a ferromagnetic armature, one or two pallets (s) creating at least one gap with the armature and mobile (s) between at least one position opening and a closed position, the mechanical return means of each pallet in the open position and at least one electrical conductor capable of generating a magnetic flux in the armature, characteristically essential in that the magnet, the armature and the vanes are arranged so that the magnet generates fluxes in two magnetic circuits in parallel each comprising at least a portion of the armature, a common branch comprising magnet and one of the two pallets or a fraction of the pallet separated from said reinforcing portion by at least one air gap, the conductor or conductors being capable of generating, in at least one additional closed magnetic loop of the frame comprising at least a common branch with said circuits in parallel, a flow that adds to the flux created by the magnet in one of the circuits and is subtracted in the other.
- the actuator may comprise a single pallet disposed substantially perpendicularly to the magnet or to a branch of the armature comprising the magnet, the closed loop of the armature cooperating with the conductor or conductors being then disposed to the opposite of the pallet with respect to the magnet.
- the pallet may consist of a rectilinear beam joining two lateral branches of the armature surrounding a central branch comprising the magnet, said branches being interconnected by a portion of the closed loop of the armature.
- the pallet may be U-shaped whose legs are placed on either side of the central branch comprising the magnet, their free ends forming two air gaps with a portion of the closed loop of the frame.
- the closed magnetic loop may either comprise a coil wound around a portion of the closed loop of the armature separate from the parallel magnetic circuits, or surround at least two power supply conductors of an electrical circuit.
- the closed loop of the frame can obviously take various forms, for example rectangular, of circular shape etc.
- the actuator of the invention may comprise two vanes whose ends form separate air gaps with the two additional closed magnetic loops arranged at both ends of the common branch of the armature comprising the magnet, said loops surrounding at least two power supply conductors of an electrical circuit.
- Figure 1 shows schematically a first possible form of actuator for the invention, with a closed loop
- Figure 2 shows the electromagnetic scheme equivalent to the structure of Figure 1
- FIG. 3 shows a variant of FIG. 1 in which the closed loop surrounds two conductors;
- FIG. 4 illustrates a V-configuration possibility for a closed two-loop version;
- Figure 5 shows a side view
- the frame 1 comprises a loop 2 surmounted by two lateral branches 3 and 4 in the middle of which is a permanent magnet 5.
- a rectilinear palette 6 joins the two branches 3 and 4.
- the loop 2 is endowed a coil 7 surrounding one of its branches.
- Material reluctances such as Rpal, R1 and R2 are nonlinear and saturable.
- the Rmat_haut and Rmat_bas reluctances may represent a gap and / or a saturable magnetic material.
- the Renti and Rent2 reluctances represent the equivalent gap between the pallet and the armature.
- the coil flux tends to decrease R1 (phi) x phi and to increase R2 (phi) x phi. Seen by the magnet, the previous balance is changed. It therefore generates more magnetic flux on one side than the other to compensate for this imbalance (in the example, we will have phi1 which will increase and phi2 which will decrease). He is thus creates a variation of magnetic flux and therefore of magnetic force on the polar surfaces.
- the closed loop 2 ' is of circular shape, whereas the pallet 6' is in U, integrating the lateral branches 3 'and 4'.
- the supply conductors are directly surrounded by the actuator of the invention which groups together both the current unbalance detection torus, in this case the loop 2 ', and the "relay" portion constituted by the upper part of the structure 1 'of the invention.
- the configurations 10, 10 'of the following figures have two closed loops, but they operate according to the same principle.
- the common branch 11 comprises a central magnet 12 and two end loops 13, 13 '.
- Two pallets 14, 14 ' have polar surfaces 15, 15' and 16, 16 'facing opposite sides 17, 17' and 18, 18 'of the closed loops 13, 13'.
- Two supply conductors pass through said loops 13, 13 '. It is the same conductors in the two loops 13, 13 ', because the structure is in V, the representation is a view from above.
- a side view is shown in Figure 5.
- the operation is based on the same principle, the flows 21, 21 '(in dashed lines) created in the two loops 13, 13' adding to the flow 22 '(line full) of one of the circuits in parallel and withdrawing from the flow 22 of the other.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0854626A FR2933805B1 (fr) | 2008-07-08 | 2008-07-08 | Actionneur electromagnetique a derivation de flux |
| PCT/FR2009/051280 WO2010004191A1 (fr) | 2008-07-08 | 2009-07-01 | Actionneur electromagnetique a derivation de flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2311058A1 true EP2311058A1 (fr) | 2011-04-20 |
| EP2311058B1 EP2311058B1 (fr) | 2013-11-20 |
Family
ID=40019497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09794029.0A Not-in-force EP2311058B1 (fr) | 2008-07-08 | 2009-07-01 | Actionneur electromagnetique a derivation de flux |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2311058B1 (fr) |
| FR (1) | FR2933805B1 (fr) |
| WO (1) | WO2010004191A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9859047B2 (en) | 2015-08-10 | 2018-01-02 | Hamilton Sundstrand Corporation | Solenoid actuators and solenoid actuated devices |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3151425B1 (fr) * | 2023-07-21 | 2025-07-18 | Hager Electro Sas | Déclencheur électromagnétique du type relais polarisé à haute sensibilité et appareillage électrique différentiel associé |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH396210A (de) * | 1962-10-08 | 1965-07-31 | Landis & Gyr Ag | Magnetisches Relais |
| DE10140559A1 (de) * | 2001-08-17 | 2003-02-27 | Moeller Gmbh | Elektromagnetanordnung für einen Schalter |
-
2008
- 2008-07-08 FR FR0854626A patent/FR2933805B1/fr not_active Expired - Fee Related
-
2009
- 2009-07-01 EP EP09794029.0A patent/EP2311058B1/fr not_active Not-in-force
- 2009-07-01 WO PCT/FR2009/051280 patent/WO2010004191A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010004191A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9859047B2 (en) | 2015-08-10 | 2018-01-02 | Hamilton Sundstrand Corporation | Solenoid actuators and solenoid actuated devices |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2933805A1 (fr) | 2010-01-15 |
| WO2010004191A1 (fr) | 2010-01-14 |
| FR2933805B1 (fr) | 2013-12-20 |
| EP2311058B1 (fr) | 2013-11-20 |
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