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EP1234316B1 - Electromagnetic switchgear comprising a controlled drive, a corresponding method and a circuit - Google Patents

Electromagnetic switchgear comprising a controlled drive, a corresponding method and a circuit Download PDF

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Publication number
EP1234316B1
EP1234316B1 EP00987163A EP00987163A EP1234316B1 EP 1234316 B1 EP1234316 B1 EP 1234316B1 EP 00987163 A EP00987163 A EP 00987163A EP 00987163 A EP00987163 A EP 00987163A EP 1234316 B1 EP1234316 B1 EP 1234316B1
Authority
EP
European Patent Office
Prior art keywords
magnetic
electromagnetic
field sensor
contact base
armature
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
Application number
EP00987163A
Other languages
German (de)
French (fr)
Other versions
EP1234316A1 (en
Inventor
Norbert Mitlmeier
Bernhard Streich
Diethard Runggaldier
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.)
Siemens AG
Original Assignee
Siemens AG
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Publication date
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Publication of EP1234316A1 publication Critical patent/EP1234316A1/en
Application granted granted Critical
Publication of EP1234316B1 publication Critical patent/EP1234316B1/en
Anticipated expiration legal-status Critical
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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
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • 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
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F2007/1894—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings minimizing impact energy on closure of magnetic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • 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
    • H01H2047/046—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 with measuring of the magnetic field, e.g. of the magnetic flux, for the control of coil current

Definitions

  • the present invention relates to a method for influencing the turn-on speed of an electromagnetic Switchgear according to the preamble of claim 1. You also relates to a drive circuit for an electromagnetic Switching device according to the preamble of claim 6 and an electromagnetic switching device according to the preamble of Claim 8.
  • Such a method, a corresponding drive circuit and also such an electromagnetic switching device are z. B. known from DE-A-26 01 799. With this font the path-time behavior of the contact carrier during switching operations detected and fed to a control unit, which the Travel-time behavior of the contact carrier based on a stored Characteristic regulates.
  • DE-A-195 44 207 has a similar disclosure content remove. From this document it is also known that end position detection is also possible.
  • the object of the present invention is a Procedure for influencing the switch-on speed, the corresponding drive circuit and the corresponding to create electromagnetic switching device where easier than a properly regulated in the prior art Guaranteed switching behavior of the electromagnetic switching device is.
  • the switching device 1 shows a simplified representation of an electromagnetic Switching device 1, e.g. a contactor 1, with the explanation essential components of the invention.
  • the switching device 1 has an electromagnetic system with a fixed yoke 2, a coil 3 and a movable armature 4, which with a contact carrier 5 is firmly connected.
  • the contact carrier 5 carries movable contacts 6, which in connection with fixed contacts 7 by appropriate triggering of the electromagnetic system serve to open and close a circuit.
  • the Switching device 1 also has a circuit board in a known manner 8 with a drive control circuit, i.e. for controlling the coil current of the coil 3 used for excitation on.
  • the switching device 1 is provided with means 9, 10 Detection of the path-time profile of the contact carrier 5 or one equipped with this firmly connected part.
  • 10 are a permanent magnet attached to the armature 4 9 and a magnetic field sensor 10, e.g. a giant magneto-resistor 10 (GMR 10), provided on the board 8 is integrated in the circuit.
  • a magnetic field sensor 10 e.g. a giant magneto-resistor 10 (GMR 10)
  • GMR 10 giant magneto-resistor 10
  • the switching device is actuated 1
  • the permanent magnet 9 moves with the contact carrier 5 and the anchor 4 with.
  • the magnetic field change caused thereby the magnetic field sensor 10 is detected.
  • the magnetic field sensor 10, here the GMR 10 creates a magnetic path s of permanent magnet 9 proportional resistance R, i.e. the resistance R is an image of the position of the permanent magnet 9 or the contact carrier 5 and the armature 4.
  • the resistance R is an image of the position of the permanent magnet 9 or the contact carrier 5 and the armature 4.
  • the sensor characteristic measured with the magnetic field sensor 10 2 shows the dependence of the resistance R on the magnetic path s specified
  • a rectifier 11 At the input of the circuit with input terminals A1 and A2 for connecting a direct (DC) or alternating voltage (AC) is a rectifier 11, the output side of a series connection from the contactor coil 12 (corresponds to 3 in FIG 1), one Switching transistor 13 and a shunt 14 with voltage fed.
  • To the contactor coil 12 is the one in a known manner Diode circuit forming freewheeling circuit connected in parallel.
  • the current evaluation of the contactor coil takes place via the shunt 14 12, for which purpose the voltage applied to the shunt 14 is an analog-digital converter 15 and then a microprocessor 16 as intelligent control unit 16 is supplied.
  • the microprocessor 16 via one at the output of the rectifier 11 ohmic divider the supply voltage applied there fed for evaluation.
  • the microprocessor 16 a the resistance R of the magnetic field sensor 10 proportional voltage U supplied.
  • the Microprocessor 16 via an amplifier 17 the switching signals to the switching transistor 13.
  • the microprocessor 16 as an intelligent control unit 16 can thus by detecting the position and thus the Path-time profile of the contact carrier 5 during the switch-on process a speed-optimized switching on of the Switchgear drive can be achieved.
  • the current speed of the drive is compared with one for the device optimal setpoint.
  • the coil current adjusted accordingly and the desired ideal value of speed realized.
  • the steps are according to the flow chart in FIG 4 made. Determined the intelligent control unit 16 after being switched on for the first time, that takes place with constant or unregulated current, the static rest position of the contact carrier 5.
  • This reference value for the "ON" position is for all subsequent ones Switching operations stored, i.e. saved so that a elaborate adjustment and adjustment process can be omitted.
  • at the subsequent switching operations according to the flow chart in FIG 5 can regulate the speed the contact carrier path based on a stored, to the device suitable characteristic curve for the path-time curve or the speed respectively. A speed reduction can shortly before the switching elements and the magnetic drive are closed be performed. This makes it clear Achieve increased mechanical and electrical life. It is also conceivable to change the speed to adapt and optimize to certain operating conditions.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Control Of Linear Motors (AREA)

Abstract

The invention provides that, in an electromagnetic switchgear, the travel-time behavior of the contact carrier (5) is measured using a magnetic field sensor (10). To this end, a microprocessor (16) evaluates the output signal of the magnetic field sensor (10) and determines the velocity of the contact carrier (5) or of a part which is interactively connected in a fixed manner to the same. The microprocessor (10) controls the current of the coil (3) of the electromagnetic system according to said evaluation and determination. The invention also relates to a corresponding method and to a circuit.

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Beeinflussen der Einschaltgeschwindigkeit eines elektromagnetischen Schaltgeräts nach dem Oberbegriff des Anspruchs 1. Sie betrifft ferner eine Antriebsschaltung für ein elektromagnetisches Schaltgerät nach dem Oberbegriff des Anspruchs 6 und ein elektromagnetisches Schaltgerät nach dem Oberbegriff des Anspruchs 8.The present invention relates to a method for influencing the turn-on speed of an electromagnetic Switchgear according to the preamble of claim 1. You also relates to a drive circuit for an electromagnetic Switching device according to the preamble of claim 6 and an electromagnetic switching device according to the preamble of Claim 8.

Ein derartiges Verfahren, eine entsprechende Antriebsschaltung und auch ein derartiges elektromagnetisches Schaltgerät sind z. B. aus der DE-A-26 01 799 bekannt. Bei dieser Schrift wird bei Schaltvorgängen das Weg-Zeit-Verhalten des Kontaktträgers erfasst und einer Steuereinheit zugeführt, welche das Weg-Zeit-Verhalten des Kontaktträgers anhand einer hinterlegten Kennlinie regelt.Such a method, a corresponding drive circuit and also such an electromagnetic switching device are z. B. known from DE-A-26 01 799. With this font the path-time behavior of the contact carrier during switching operations detected and fed to a control unit, which the Travel-time behavior of the contact carrier based on a stored Characteristic regulates.

Der DE-A-195 44 207 ist ein ähnlicher Offenbarungsgehalt zu entnehmen. Aus dieser Schrift ist weiterhin bekannt, dass auch eine Endlagendetektierung möglich ist.DE-A-195 44 207 has a similar disclosure content remove. From this document it is also known that end position detection is also possible.

Die Aufgabe der vorliegenden Erfindung besteht darin, ein Verfahren zur Beeinflussung der Einschaltgeschwindigkeit, die korrespondierende Antriebsschaltung und das korrespondierende elektromagnetische Schaltgerät zu schaffen, bei denen einfacher als im Stand der Technik ein ordnungsgemäß geregeltes Schaltverhalten des elektromagnetischen Schaltgeräts gewährleistet ist.The object of the present invention is a Procedure for influencing the switch-on speed, the corresponding drive circuit and the corresponding to create electromagnetic switching device where easier than a properly regulated in the prior art Guaranteed switching behavior of the electromagnetic switching device is.

Die Aufgabe wird durch die Gegenstände der Ansprüche 1, 6 und 8 gelöst. The object is achieved by the subjects of claims 1, 6 and 8 solved.

Vorteilhafte Ausgestaltungen sind den Ansprüchen 2 bis 5, 7 und 9 zu entnehmen.Advantageous embodiments are claims 2 to 5, 7 and 9 can be seen.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand einer Zeichnung näher erläutert. Es zeigen:

FIG 1
ein elektromagnetisches Schaltgerät,
FIG 2
eine mit einem Magnetfeldsensor aufgenommene Sensorkennlinie,
FIG 3
eine Schaltung zum Antrieb eines elektromagnetischen Schaltgeräts,
FIG 4
ein Ablaufdiagramm zur Selbstjustage eines erfindungsgemäßen Schaltgeräts und
FIG 5
ein Ablaufdiagramm für die Schalthandlungen im Normalbetrieb.
An embodiment of the invention is explained below with reference to a drawing. Show it:
FIG. 1
an electromagnetic switching device,
FIG 2
a sensor characteristic recorded with a magnetic field sensor,
FIG 3
a circuit for driving an electromagnetic switching device,
FIG 4
a flowchart for self-adjustment of a switching device according to the invention and
FIG 5
a flow chart for the switching operations in normal operation.

FIG 1 zeigt in vereinfachter Darstellung ein elektromagnetisches Schaltgerät 1, z.B. ein Schütz 1, mit den zur Erläuterung der Erfindung wesentlichen Komponenten. Das Schaltgerät 1 weist ein Elektromagnetsystem mit einem feststehenden Joch 2, einer Spule 3 und einem beweglichen Anker 4 auf, der mit einem Kontaktträger 5 fest verbunden ist. Der Kontaktträger 5 trägt bewegliche Kontakte 6, die in Verbindung mit Festkontakten 7 durch entsprechende Auslösung des Elektromagnetsystems zum Öffnen und Schließen eines Stromkreises dienen. Das Schaltgerät 1 weist außerdem in bekannter Weise eine Platine 8 mit einer Schaltung zur Antriebssteuerung, d.h. zur Steuerung des Spulenstromes der zur Erregung dienenden Spule 3 auf.1 shows a simplified representation of an electromagnetic Switching device 1, e.g. a contactor 1, with the explanation essential components of the invention. The switching device 1 has an electromagnetic system with a fixed yoke 2, a coil 3 and a movable armature 4, which with a contact carrier 5 is firmly connected. The contact carrier 5 carries movable contacts 6, which in connection with fixed contacts 7 by appropriate triggering of the electromagnetic system serve to open and close a circuit. The Switching device 1 also has a circuit board in a known manner 8 with a drive control circuit, i.e. for controlling the coil current of the coil 3 used for excitation on.

Erfindungsgemäß ist das Schaltgerät 1 mit Mitteln 9,10 zur Erfassung des Weg-Zeit-Verlaufs des Kontaktträgers 5 oder eines mit diesem in fester Verbindung stehenden Teiles ausgerüstet. According to the invention, the switching device 1 is provided with means 9, 10 Detection of the path-time profile of the contact carrier 5 or one equipped with this firmly connected part.

Als Mittel 9,10 sind hier ein am Anker 4 befestigter Permanentmagnet 9 und ein Magnetfeldsensor 10, z.B. ein Giant-Magneto-Resistor 10 (GMR 10), vorgesehen, der auf der Platine 8 in die Schaltung integriert ist. Bei Betätigung des Schaltgeräts 1 bewegt sich der Permanentmagnet 9 mit dem Kontaktträger 5 und dem Anker 4 mit. Die dadurch hervorgerufene Magnetfeldänderung am Magnetfeldsensor 10 wird erfasst. Der Magnetfeldsensor 10, hier der GMR 10, erzeugt einen zum Magnetweg s des Permanentmagneten 9 proportionalen Widerstand R, d.h. der Widerstand R ist ein Abbild der Position des Permanentmagneten 9 bzw. des Kontaktträgers 5 und des Ankers 4. In der mit dem Magnetfeldsensor 10 gemessenen Sensorkennlinie gemäß FIG 2 ist die Abhängigkeit des Widerstandes R vom Magnetweg s angegeben.As a means 9, 10 are a permanent magnet attached to the armature 4 9 and a magnetic field sensor 10, e.g. a giant magneto-resistor 10 (GMR 10), provided on the board 8 is integrated in the circuit. When the switching device is actuated 1, the permanent magnet 9 moves with the contact carrier 5 and the anchor 4 with. The magnetic field change caused thereby the magnetic field sensor 10 is detected. The magnetic field sensor 10, here the GMR 10, creates a magnetic path s of permanent magnet 9 proportional resistance R, i.e. the resistance R is an image of the position of the permanent magnet 9 or the contact carrier 5 and the armature 4. In the sensor characteristic measured with the magnetic field sensor 10 2 shows the dependence of the resistance R on the magnetic path s specified.

FIG 3 zeigt eine vereinfachte Darstellung der Schaltung des Steuerkreises auf der Platine 8, soweit dies zum Verständnis der Erfindung erforderlich ist.3 shows a simplified representation of the circuit of the Control circuit on the board 8, as far as this is understood the invention is required.

Am Eingang der Schaltung mit den Eingangsklemmen A1 und A2 zum Anschluss einer Gleich- (DC) oder Wechselspannung (AC) liegt ein Gleichrichter 11, der ausgangsseitig eine Reihenschaltung aus der Schützspule 12 (entspricht 3 in FIG 1), einem Schalttransistor 13 und einem Shunt 14 mit Spannung speist. Zur Schützspule 12 ist in bekannter Weise eine den Freilaufkreis bildende Diodenschaltung parallelgeschaltet. Über den Shunt 14 erfolgt die Stromauswertung der Schützspule 12, wozu die am Shunt 14 anliegende Spannung einem Analog-Digital-Wandler 15 und anschließend einem Mikroprozessor 16 als intelligenter Steuereinheit 16 zugeführt wird. Daneben wird dem Mikroprozessor 16 über einen am Ausgang des Gleichrichters 11 liegenden ohmschen Teiler die dort anliegende Speisespannung zur Auswertung zugeführt. Des weiteren wird dem Mikroprozessor 16 eine dem Widerstand R des Magnetfeldsensors 10 proportionale Spannung U zugeleitet. Abhängig von den drei genannten Eingangsgrößen Spulenstrom, Speisespannung sowie der der Position des Kontaktträgers 5 entsprechenden Spannung U bzw. des hieraus abgeleiteten Weg-Zeit-Verhaltens gibt der Mikroprozessor 16 über einen Verstärker 17 die Schaltsignale an den Schalttransistor 13.At the input of the circuit with input terminals A1 and A2 for connecting a direct (DC) or alternating voltage (AC) is a rectifier 11, the output side of a series connection from the contactor coil 12 (corresponds to 3 in FIG 1), one Switching transistor 13 and a shunt 14 with voltage fed. To the contactor coil 12 is the one in a known manner Diode circuit forming freewheeling circuit connected in parallel. The current evaluation of the contactor coil takes place via the shunt 14 12, for which purpose the voltage applied to the shunt 14 is an analog-digital converter 15 and then a microprocessor 16 as intelligent control unit 16 is supplied. Next to it the microprocessor 16 via one at the output of the rectifier 11 ohmic divider the supply voltage applied there fed for evaluation. Furthermore, the microprocessor 16 a the resistance R of the magnetic field sensor 10 proportional voltage U supplied. Depending on the three mentioned input variables coil current, supply voltage and the voltage corresponding to the position of the contact carrier 5 U or the path-time behavior derived from this gives the Microprocessor 16 via an amplifier 17 the switching signals to the switching transistor 13.

Mit Hilfe des Mikroprozessors 16 als intelligenter Steuereinheit 16 kann also durch Erfassung der Position und damit des Weg-Zeit-Verlaufs des Kontaktträgers 5 während des Einschaltvorgangs ein geschwindigkeitsoptimiertes Einschalten des Schaltgeräteantriebs erreicht werden. Die aktuelle Geschwindigkeit des Antriebes wird verglichen mit einem für das Gerät optimalen Sollwert. Je nach Abweichung wird der Spulenstrom entsprechend angepasst und der angestrebte Idealwert der Geschwindigkeit realisiert. Durch das Hinterlegen einer Kennlinie für die Geschwindigkeit in Abhängigkeit von der Stellung des Schaltapparates kann die Geschwindigkeit über den Magnetweg s variiert werden und damit eine entsprechend geringe Kontaktschließgeschwindigkeit und Magnetschließgeschwindigkeit realisiert werden. Es ist damit auch ein geringer Einschaltverzug bei gleichzeitig sanftem Schließen der Kontakte 6,7 und des Magnetantriebes erreichbar.With the help of the microprocessor 16 as an intelligent control unit 16 can thus by detecting the position and thus the Path-time profile of the contact carrier 5 during the switch-on process a speed-optimized switching on of the Switchgear drive can be achieved. The current speed of the drive is compared with one for the device optimal setpoint. Depending on the deviation, the coil current adjusted accordingly and the desired ideal value of speed realized. By storing a characteristic curve for the speed depending on the position of the switchgear can speed via the magnetic path s can be varied and thus a correspondingly low one Contact closing speed and magnetic closing speed will be realized. This means that there is also a slight switch-on delay while gently closing the contacts 6.7 and the magnetic drive can be reached.

Selbstverständlich ist es auch denkbar, den Permanentmagnet 9 an anderen Teilen zu befestigen, die die Bewegung mitmachen, z.B. dem Kontaktträger 5.Of course, it is also conceivable to use the permanent magnet 9 to attach to other parts that join the movement, e.g. the contact carrier 5.

Zur Selbstjustage des Schaltgeräts 1 werden die Schritte gemäß dem Ablaufdiagramm in FIG 4 vorgenommen. Dabei ermittelt die intelligente Steuereinheit 16 nach dem erstmaligen Einschalten, das mit konstantem oder ungeregeltem Strom erfolgt, die statische Ruhelage des Kontaktträgers 5. Dieser Referenzwert für die Stellung "EIN" wird für alle nachfolgenden Schalthandlungen hinterlegt, d.h. gespeichert, so dass ein aufwändiger Abgleich- und Justiervorgang entfallen kann. Bei den sich anschließenden Schalthandlungen gemäß dem Ablaufdiagramm in FIG 5 kann eine Regelung der Geschwindigkeit über den Kontaktträgerweg anhand einer hinterlegten, zum Gerät passenden Kennlinie für den Weg-Zeit-Verlauf bzw. die Geschwindigkeit erfolgen. Eine Geschwindigkeitsreduzierung kann kurz vor dem Schließen der Schaltstücke und des Magnetantriebs durchgeführt werden. Somit lässt sich eine deutliche Erhöhung der mechanischen und elektrischen Lebensdauer erreichen. Weiterhin ist es denkbar, den Geschwindigkeitsverlauf an bestimmte Einsatzbedingungen anzupassen und zu optimieren.For self-adjustment of the switching device 1, the steps are according to the flow chart in FIG 4 made. Determined the intelligent control unit 16 after being switched on for the first time, that takes place with constant or unregulated current, the static rest position of the contact carrier 5. This reference value for the "ON" position is for all subsequent ones Switching operations stored, i.e. saved so that a elaborate adjustment and adjustment process can be omitted. at the subsequent switching operations according to the flow chart in FIG 5 can regulate the speed the contact carrier path based on a stored, to the device suitable characteristic curve for the path-time curve or the speed respectively. A speed reduction can shortly before the switching elements and the magnetic drive are closed be performed. This makes it clear Achieve increased mechanical and electrical life. It is also conceivable to change the speed to adapt and optimize to certain operating conditions.

Die Selbstjustage des Schaltgeräts 1 kann im Werk oder beim Kunden gemäß den folgenden Schritten durchgeführt werden:

  • 1. Anlegen des EIN-Kommandos (Block 21).
  • 2. Die Kontakte des Schaltgeräts schließen (Block 22).
  • 3. Mit Hilfe des Magnetfeldsensors 10 wird die Ruhelage des Kontaktsystems registriert (Block 23).
  • 4. Die Ruhelage wird als Referenz für die Stellung EIN gespeichert (Block 24).
  • 5. Das EIN-Kommando wird weggenommen, d.h. die Kontakte 6,7 öffnen (Block 25).
    • The self-adjustment of the switching device 1 can be carried out in the factory or at the customer according to the following steps:
  • 1. Apply the ON command (block 21).
  • 2. Close the contacts of the switching device (block 22).
  • 3. With the help of the magnetic field sensor 10, the rest position of the contact system is registered (block 23).
  • 4. The rest position is stored as a reference for the ON position (block 24).
  • 5. The ON command is removed, ie the contacts 6,7 open (block 25).

    • Die weiteren Schalthandlungen für den Normalbetrieb werden gemäß dem Ablaufdiagramm in FIG 5 durchgeführt. Dieses beinhaltet folgende Schritte:The other switching operations for normal operation will be performed according to the flow chart in FIG 5. This includes following steps:

    Falls ein EIN-Kommando vorliegt, was im Block 26 überprüft wird, wird im Block 27 abgefragt, ob die Steuerspannung oberhalb eines Schwellwertes Umin liegt. Ist dies nicht der Fall, wird über Block 28 eine Fehlermeldung ausgegeben. Anderenfalls wird im Block 29 der Schaltvorgang eingeleitet und anschließend im Block 30 anhand der bereits erwähnten hinterlegten Kurve die Geschwindigkeit bis zum Schließen des Schaltgeräts geregelt. Anschließend erfolgt im Block 31 die Regelung auf den Haltestrom. Im Block 32 wird überwacht, ob das EIN-Kommando aktiv ist und daraufhin das Schaltgerät entweder im Ansprechzustand belassen oder andernfalls gemäß Block 33 geöffnet.If an ON command is present, which is checked in block 26, it is queried in block 27 whether the control voltage is above a threshold value U min . If this is not the case, an error message is output via block 28. Otherwise, the switching process is initiated in block 29 and the speed is then regulated in block 30 using the stored curve already mentioned until the switching device closes. The holding current is then regulated in block 31. In block 32 it is monitored whether the ON command is active and then either leave the switching device in the response state or otherwise open in accordance with block 33.

    Claims (9)

    1. A method for influencing the switch-on speed of an electromagnetic switchgear (1), in particular of a contactor (1), comprising an electromagnetic system, the electromagnetic system having an armature (4) which is rigidly connected to a contact base (5) comprising movable contacts (6) which, in connection with fixed contacts (7), serve to open and close a current circuit,
      wherein the displacement-time behaviour of the contact base (5) is recorded and fed to a control unit (16) and
      wherein the displacement-time behaviour of the contact base (5) is regulated by the control unit (16) using a stored equipment-specific characteristic curve,
      characterised in that
      after the electromagnetic switchgear is switched on initially, a static rest position of the contact base (5) in the switched-on position is determined,
      the determined static rest position is stored so that it is available to the control unit (16) for all subsequent switching processes, and
      the stored static rest position is used by the control unit (16) in the subsequent switching processes as a reference value for the switched-on position.
    2. A method according to Claim 1,
      characterised in that
      the displacement-time behaviour is determined with the aid of a magnetic-field sensor (10) which generates an output signal depending on the change in a magnetic field.
    3. A method according to Claim 2,
      characterised in that
      the magnetic-field sensor (10) is fashioned as a Giant Magneto Resistor (10).
    4. A method according to Claim 2 or Claim 3,
      characterised in that
      the magnetic-field sensor (10) records the magnetic field issuing from a permanent magnet (9) fastened to the armature.
    5. A method according to any one of the preceding Claims,
      characterised in that
      the speed is reduced by appropriate control of the current in the coil (3) shortly before the closing of the contacts (6, 7) and the solenoid actuator.
    6. A drive circuit for electromagnetic switchgear (1), in particular a contactor (1), comprising a coil (12) which lies in series with a switching element (13) and in an electromagnetic system comprising an armature (4) serves to trigger a contact system and a processing unit (16) which, in order to control the switching element (13), is connected to said switching element, the processing unit (16) being connected to a magnetic-field sensor (10) with which the displacement-time behaviour of the armature can be recorded, the processing unit (16) being fashioned such that it can regulate the displacement-time behaviour of the armature (4) using a stored equipment-specific characteristic curve,
      characterised in that
      the processing unit (16) is fashioned such that it
      determines after the electromagnetic switchgear is initially switched on a static rest position of a contact base (5) in the switched-on position,
      stores the determined static rest position such that it is available to it for all subsequent switching processes, and
      uses the stored static rest position in subsequent switching processes as a reference value for switching on.
    7. A drive circuit according to Claim 6,
      characterised in that
      the magnetic-field sensor (10) is fashioned as a Giant Magneto Resistor (10).
    8. Electromagnetic switchgear (1) comprising a contact system having rigid and movable contacts (6,7) and a contact base (5) carrying the movable contacts (6), said base being rigidly connected to an armature (4) of an electromagnet system,
      characterised in that
      the electromagnetic switchgear (1) has a drive circuit according to Claim 6 or Claim 7.
    9. Electromagnetic switchgear according to Claim 8,
      characterised in that
      a permanent magnet (9) is arranged on the contact base or on a part rigidly connected to this contact base, said permanent magnet interacting with the magnetic-field sensor (10) of the drive circuit.
    EP00987163A 1999-12-03 2000-11-17 Electromagnetic switchgear comprising a controlled drive, a corresponding method and a circuit Expired - Lifetime EP1234316B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19958444 1999-12-03
    DE19958444 1999-12-03
    PCT/DE2000/004072 WO2001041174A1 (en) 1999-12-03 2000-11-17 Electromagnetic switchgear comprising a controlled drive, a corresponding method and a circuit

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    EP1234316A1 EP1234316A1 (en) 2002-08-28
    EP1234316B1 true EP1234316B1 (en) 2004-10-20

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    EP00987163A Expired - Lifetime EP1234316B1 (en) 1999-12-03 2000-11-17 Electromagnetic switchgear comprising a controlled drive, a corresponding method and a circuit

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    EP (1) EP1234316B1 (en)
    JP (1) JP2003515905A (en)
    CN (1) CN1252768C (en)
    DE (1) DE50008358D1 (en)
    WO (1) WO2001041174A1 (en)

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    CN104155908A (en) * 2014-08-25 2014-11-19 沈阳工业大学 Intelligent contactor closed-loop control system and method based on follow-up control in moving process

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    DE10331339A1 (en) * 2003-07-10 2005-02-03 Siemens Ag Electromagnetic switching device
    EP1811539B1 (en) 2004-11-05 2011-05-04 General Electric Company Electrical contactor and associated contactor-closure control method
    JP5188812B2 (en) * 2004-12-23 2013-04-24 シーメンス アクチエンゲゼルシヤフト Method and apparatus for operating switchgear safely
    EP1891654B1 (en) 2005-06-16 2010-08-11 Siemens Aktiengesellschaft Electromagnetic switching device and method for the operation thereof
    US7602271B2 (en) * 2006-08-21 2009-10-13 American Axle & Manufacturing, Inc. Electronically actuated apparatus using solenoid actuator with integrated sensor
    CN101813750B (en) * 2009-02-24 2014-04-16 施耐德电器工业公司 Device and method for detecting wear and aging of contactor
    CN101814398A (en) * 2009-02-24 2010-08-25 施耐德电器工业公司 Alternating current contactor and control method thereof
    JP5999300B2 (en) * 2011-12-19 2016-09-28 パナソニックＩｐマネジメント株式会社 Electromagnetic switchgear
    DE102012013491B3 (en) * 2012-07-09 2013-09-26 Auto-Kabel Managementgesellschaft Mbh Electrical disconnector device for disconnecting 50V battery and electric motor of e.g. pure electric car in case of accident, has disconnector formed of permanent magnet, and sensor arranged outside housing
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    DE102008046374B3 (en) * 2008-09-09 2009-12-31 Siemens Aktiengesellschaft Electromagnetic switchgear e.g. relay, has contact system standing in effective connection with magnetic system, and sensor arranged at side of yoke lying opposite to movable armature, where sensor detects impact torque of armature
    CN104155908A (en) * 2014-08-25 2014-11-19 沈阳工业大学 Intelligent contactor closed-loop control system and method based on follow-up control in moving process

    Also Published As

    Publication number Publication date
    CN1252768C (en) 2006-04-19
    CN1402878A (en) 2003-03-12
    DE50008358D1 (en) 2004-11-25
    WO2001041174A1 (en) 2001-06-07
    EP1234316A1 (en) 2002-08-28
    JP2003515905A (en) 2003-05-07

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