EP1203389B1 - Beschaltung für ein elektromagnetisches schaltgerät - Google Patents
Beschaltung für ein elektromagnetisches schaltgerät Download PDFInfo
- Publication number
- EP1203389B1 EP1203389B1 EP00963898A EP00963898A EP1203389B1 EP 1203389 B1 EP1203389 B1 EP 1203389B1 EP 00963898 A EP00963898 A EP 00963898A EP 00963898 A EP00963898 A EP 00963898A EP 1203389 B1 EP1203389 B1 EP 1203389B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- circuit
- drive coil
- switching
- energy store
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
- H01H47/043—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current making use of an energy accumulator
Definitions
- the present invention relates to a circuit for a electromagnetic switching device with at least one drive coil, the one when a pulling current is applied Contact arrangement of the electromagnetic switching device actuated and when subsequently subjected to a holding current, which is smaller than the pull-in current, the contact arrangement keeps pressed, with a current limiter on the input side with a power supply and on the output side with the Drive coil is connected and outputs a limiter current.
- Electromagnetic switching devices i.e. contactors and relays, take a high power supply when switching on Starting current.
- the pull-in current is, among other things, from the one present Supply voltage dependent.
- the electromagnetic switching device a current limiter to subordinate the starting current regardless of the supply voltage to the minimum possible Value limited. Nevertheless, this is still minimal Starting current required, which has a very high value. Especially with large shooters due to the high Current pollution can even affect the grid.
- the object of the present invention is a To create circuitry for an electromagnetic switching device, with which on the one hand the drive coil with certainty the required starting current can be supplied, on the other hand the current drawn from the power supply is considerably lower is.
- the task is based on the state described at the beginning the technology - solved in that the limiter current is smaller than the starting current is that between the current limiter and the drive coil, an energy storage device is arranged and that a switching element between the energy store and the drive coil is arranged, the energy content of the energy storage recorded and the energy storage only on the Drive coil turns on when the energy storage with a sufficient for actuating the contact arrangement Energy content is applied.
- the load on the power supply is less than the starting current relatively low. Because of the storage of energy in the energy storage is the one for switching the switching device required energy available. Because of the switching element prevents the stored energy from becoming one Time is switched through to the drive coil at which no safe switching of the switching device is guaranteed yet is.
- the energy store can be of any type.
- an electrical energy storage is used, thus an accumulator or in particular a capacitor.
- the operational safety of the electromagnetic switching device is increased significantly when the energy storage device reaches a maximum Has energy content and the maximum energy content for at least two successive actuations of the contact arrangement sufficient.
- the wiring is universal for various electromagnetic switching devices can be used which require different holding currents.
- the limiter current can be set such that that it is slightly larger than the holding current.
- the adjustability of the limiter current can, for example can be achieved in that the current limiter is a charging switching element with adjustable switching ratio.
- the switching ratio can be set, for example done by pulse width modulation.
- the charging switching element has a choke with an anti-parallel is connected upstream free-wheeling diode No abrupt changes in current on the supply side.
- the circuit is for different electromagnetic switching devices with different Tightening currents adjustable.
- a switching signal can be supplied to the switching element is and the switching element only the energy storage
- the switching signal is applied to the drive coil, it is possible to pre-charge the energy storage and when the switching signal is present, the contact arrangement immediately to operate.
- the wiring is universal both when supplying with Can be used both directly and with AC power.
- the electromagnetic switching device 1 shows an electromagnetic switching device 1 Drive coil 2 and a contact arrangement 3.
- the electromagnetic switching device 1 is the electromagnetic switching device 1 as Contactor trained. But it could also be designed as a relay his.
- the contact arrangement 3 When a drive current 2 A is applied to the drive coil 2, the contact arrangement 3 is actuated. After the contact arrangement 3 has been actuated, the drive coil 2 can be subjected to a holding current I H which is smaller than the starting current I A in order to keep the contact arrangement 3 actuated. If the drive coil 2 is supplied with a current which is less than the holding current I H , the contact arrangement 3 changes into the unactuated state. A renewed actuation of the contact arrangement 3 is then only possible again by applying the starting current I A to the drive coil 2.
- the switching device 1 is preceded by a coil current control 4 which regulates the current flowing through the drive coil 2 to the starting current I A , the holding current I H or zero. Without further measures, the circuit described so far would nevertheless cause a high current load of a supply network with the starting current I A when the contact arrangement 3 is actuated.
- the coil current control 4 upstream of a current limiter 5.
- the current limiter 5 is connected on the input side to a power supply, which has a supply voltage U: output side is the current limiter 5 on other components which will be discussed in more detail below with the coil current control 4 and thus indirectly connected to the drive coil 2.
- the current limiter 5 is controlled in such a way that it outputs a limiter current I L which is less than the starting current I A.
- the limiter current I L is slightly larger than the holding current I H , e.g. B. five to 10 percent larger.
- the limiter current I L is used to charge an energy store 6, which is arranged between the current limiter 5 and the drive coil 2 or the coil current control 4. According to FIG. 1, the energy store 6 is designed as a storage capacitor 6.
- a switching element 7 is arranged in the coil current control 4.
- the energy content of the energy store 6 detected.
- the switching element 7 then switches the energy storage device 6 to the drive coil 2 or the coil current control 4 by when the energy storage 6 is acted upon with an energy content that for a Operating the contact arrangement 3 is sufficient.
- the energy store 6 When the energy store 6 is designed as a storage capacitor 6, the energy content of the energy store 6 is given directly by the capacitance of the storage capacitor 6 and a storage voltage U s dropping across the storage capacitor 6. In this case, only the memory voltage must U s to an externally predetermined and adjustable switching threshold U S * compared. In this case, the switching element 7 switches the energy store 6 through to the drive coil 2 when the storage voltage U s is greater than or equal to the switching threshold U s *.
- the circuit is connected to a supply voltage U supplied.
- the maximum energy content of the energy storage 6 is in training as a storage capacitor 6 thus by its capacity and the supply voltage U certainly.
- the capacitance of the storage capacitor is preferably 6 dimensioned such that the energy content of the storage capacitor 6 for at least two successive ones Actuations of the contact arrangement 3 is sufficient.
- the current limiter 5 has a charging switching element 8 which is controlled by a control circuit 9.
- the charging switching element 8 is thus switched through and blocked alternately.
- the ratio between switching time and blocking time indicates the switching ratio.
- the switching ratio can be set, for example, by pulse width modulation.
- a choke 10 is arranged upstream of the current limiter 5.
- the Choke 10 is connected in parallel with a freewheeling diode 11. This results in a more even current load on the Supply network because the choke limits current changes.
- the switching device 1 is actuated by applying the supply voltage U.
- the switching device 1 is actuated by applying the supply voltage U.
- the switching element 7 only switches the energy store 6 through to the drive coil 2 or the coil current control 4 when both the energy store 6 has sufficient energy content and the switch-through signal S is present. In this case, it is possible to pre-charge the energy store 6.
- the current limiter 5 together with choke 10 and Free-wheeling diode 11, a rectifier 12 with a backup capacitor 13 upstream.
- the wiring is optionally available with DC voltage or can be supplied with AC voltage.
- the coil current control 4 described in connection with FIG. 1 can be omitted. This is because after the energy store 6 has been discharged, the current supplied to the drive coil 2 inevitably drops to the limiter current I L. If the limiter current I L is slightly larger than the holding current I H and the energy content of the energy store 6 is dimensioned sufficiently small, the current limiter 5 also acts as a coil current control. A separate coil current control 4 is then no longer necessary.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Relay Circuits (AREA)
Description
- FIG 1
- ein elektromagnetisches Schaltgerät mit vorgeordneter Beschaltung.
Claims (10)
- Beschaltung für ein elektromagnetisches Schaltgerät (1) mit mindestens einer Antriebsspule (2), die bei Beaufschlagung mit einem Anzugsstrom (IA) eine Kontaktanordnung (3) des elektromagnetischen Schaltgeräts (1) betätigt und bei nachfolgender Beaufschlagung mit einem Haltestrom (IH), der kleiner als der Anzugsstrom (IA) ist, die Kontaktanordnung (3) betätigt hält, mit einem Strombegrenzer (5), der eingangsseitig mit einer Stromversorgung und ausgangsseitig mit der Antriebsspule (2) verbunden ist und einen Begrenzerstrom (IL) ausgibt,
wobei der Begrenzerstrom (IL) kleiner als der Anzugsstrom (IA) ist, wobei zwischen dem Strombegrenzer (5) und der Antriebsspule (2) ein Energiespeicher (6) angeordnet ist und wobei zwischen dem Energiespeicher (6) und der Antriebsspule (2) ein Durchschaltelement (7) angeordnet ist, das den Energieinhait des Energiespeichers (6) erfaßt und den Energiespeicher (6) nur dann auf die Antriebsspule (2) durchschaltet, wenn der Energiespeicher (6) mit einem für ein Betätigen der Kontaktanordnung (3) ausreichenden Energieinhalt beaufschlagt ist. - Beschaltung nach Anspruch 1,
dadurch gekennzeichnet, daß der Energiespeicher (6) als Speicherkondensator (6) ausgebildet ist. - Beschaltung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der Energiespeicher (6) einen maximalen Energieinhalt aufweist und daß der maximale Energieinhalt für mindestens zwei aufeinanderfolgende Betätigungen der Kontaktanordnung (3) ausreicht. - Beschaltung nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, daß der Begrenzerstrom (IL) einstellbar ist. - Beschaltung nach Anspruch 4,
dadurch gekennzeichnet, daß der Strombegrenzer (5) ein Ladeschaltelement (8) mit einstellbarem Schaltverhältnis aufweist. - Beschaltung nach Anspruch 5,
dadurch gekennzeichnet, daß das Einstellen des Schaltverhältnisses durch Pulsweitenmodulation erfolgt. - Beschaltung nach Anspruch 5 oder 6,
dadurch gekennzeichnet, daß dem Ladeschaltelement (8) eine Drossel (10) mit einer antiparallel gegengeschalteten Freilaufdiode (11) vorgeordnet ist. - Beschaltung nach einem der obigen Ansprüche,
dadurch gekennzeichnet, daß das Durchschaltelement (7) den Energiespeicher (6) bei Erreichen einer Schaltschwelle (Us*) auf die Antriebsspule (2) durchschaltet und daß die Schaltschwelle (Us*) einstellbar ist. - Beschaltung nach einem der obigen Ansprüche,
dadurch gekennzeichnet, daß dem Durchschaltelement (7) ein Durchschaltsignal (S) zuführbar ist und daß das Durchschaltelement (7) den Energiespeicher (6) nur bei Anliegen des Durchschaltsignals (S) auf die Antriebsspule (2) durchschaltet. - Beschaltung nach einem der obigen Ansprüche,
dadurch gekennzeichnet, daß dem Strombegrenzer (5) ein Gleichrichter (12) vorgeordnet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19938112 | 1999-08-12 | ||
DE19938112 | 1999-08-12 | ||
PCT/DE2000/002707 WO2001013396A1 (de) | 1999-08-12 | 2000-08-11 | Beschaltung für ein elektromagnetisches schaltgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1203389A1 EP1203389A1 (de) | 2002-05-08 |
EP1203389B1 true EP1203389B1 (de) | 2003-10-22 |
Family
ID=7918089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00963898A Expired - Lifetime EP1203389B1 (de) | 1999-08-12 | 2000-08-11 | Beschaltung für ein elektromagnetisches schaltgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1203389B1 (de) |
CN (1) | CN1369100A (de) |
DE (1) | DE50004180D1 (de) |
WO (1) | WO2001013396A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004038527A1 (de) * | 2004-08-07 | 2006-03-16 | Audi Ag | Schaltungsanordnung für Kraftfahrzeuge |
US7903383B2 (en) | 2007-07-09 | 2011-03-08 | Smc Kabushiki Kaisha | Solenoid valve driving circuit and solenoid valve |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2455569B (en) * | 2007-12-14 | 2010-02-17 | Renium Ltd | Electro-mechanical actuator |
DE102008045149B4 (de) * | 2008-09-01 | 2016-03-31 | Phoenix Contact Gmbh & Co. Kg | Schaltungsanordnung zum Anschließen an einen fehlersicheren Ausgang einer Steuerung |
DE102010030693A1 (de) * | 2010-06-30 | 2012-01-05 | Bayerische Motoren Werke Aktiengesellschaft | Schaltungsanordnung für ein Kraftfahrzeug und Verfahren zum Betreiben der Schaltungsanordnung |
CN104064403B (zh) * | 2013-03-22 | 2016-05-04 | 海洋王(东莞)照明科技有限公司 | 一种降低继电器功耗的控制电路 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4716490A (en) * | 1987-04-03 | 1987-12-29 | George Alexanian | Power saving module |
DE19617110A1 (de) * | 1996-04-19 | 1997-10-23 | Siemens Ag | Schaltungsanordnung zum Betrieb eines Elektromagneten |
-
2000
- 2000-08-11 CN CN00811495A patent/CN1369100A/zh active Pending
- 2000-08-11 EP EP00963898A patent/EP1203389B1/de not_active Expired - Lifetime
- 2000-08-11 WO PCT/DE2000/002707 patent/WO2001013396A1/de active IP Right Grant
- 2000-08-11 DE DE50004180T patent/DE50004180D1/de not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004038527A1 (de) * | 2004-08-07 | 2006-03-16 | Audi Ag | Schaltungsanordnung für Kraftfahrzeuge |
US7903383B2 (en) | 2007-07-09 | 2011-03-08 | Smc Kabushiki Kaisha | Solenoid valve driving circuit and solenoid valve |
Also Published As
Publication number | Publication date |
---|---|
CN1369100A (zh) | 2002-09-11 |
WO2001013396A1 (de) | 2001-02-22 |
DE50004180D1 (de) | 2003-11-27 |
EP1203389A1 (de) | 2002-05-08 |
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