WO2001001538A1 - Circuit contacteur - Google Patents

Circuit contacteur Download PDF

Info

Publication number
WO2001001538A1
WO2001001538A1 PCT/DE2000/001940 DE0001940W WO0101538A1 WO 2001001538 A1 WO2001001538 A1 WO 2001001538A1 DE 0001940 W DE0001940 W DE 0001940W WO 0101538 A1 WO0101538 A1 WO 0101538A1
Authority
WO
WIPO (PCT)
Prior art keywords
contactor
current
switching element
current sensor
circuit
Prior art date
Application number
PCT/DE2000/001940
Other languages
German (de)
English (en)
Inventor
Bernhard Streich
Gerd Griepentrog
Diethard Runggaldier
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2001001538A1 publication Critical patent/WO2001001538A1/fr

Links

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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
    • H02H9/047—Free-wheeling circuits

Definitions

  • the present invention relates to a contactor circuit with a contactor coil, a current sensor, a switching element, a free-wheeling diode and an Ans euerScnies, wherein at least one load contact can be actuated with the contactor coil, wherein the current sensor and the switching element are connected in series with the contactor coil, wherein the free-wheeling diode overlaps the contactor coil, the control circuit being able to be given a control command on the basis of which the switching element can be actuated, the control circuit being connected to the current sensor, so that a contactor current flowing through the contactor coil can be regulated.
  • Contactor circuits of this type are generally known. They are used in particular when the supply voltage of the contactor circuit may fluctuate within certain limits.
  • the contactor current flows through the current sensor only when the switching element is actuated. This leads to considerable restrictions in the possible uses and the reliability of the contactor circuit.
  • the object of the present invention is to provide a contactor circuit in which the contactor current is always measurable and thus better control of the contactor current is possible.
  • the object is achieved in that the freewheeling diode also overlaps the current sensor.
  • the invention is therefore based on the knowledge that with a suitable arrangement of the current sensor, the contactor current can also be opened state of the switching element flows through the current sensor.
  • the current sensor can be designed differently. In the simplest case, it is designed as a resistor.
  • the detection and further processing of the contactor current is particularly simple if the contactor coil is arranged between the current sensor and the switching element. This is especially true when the control circuit and the current sensor are connected to a common supply connection for the contactor circuit.
  • the control of the contactor current is particularly simple when the switching element is opened when the contactor current reaches a maximum current and is closed when the contactor current reaches a minimum current. So-called two-point control is carried out.
  • the two-point control is particularly flexible if the minimum and / or the maximum current can be preselected.
  • the control circuit is particularly flexible if it is designed as a microprocessor.
  • a contactor circuit has a contactor coil 1, a current sensor 2, a switching element 3, a free-wheeling diode 4 and a control circuit 5. At least one load contact 6 can be actuated by means of the contactor coil 1. According to FIG 1, even three load contacts 6 can be actuated.
  • the current sensor 2, the switching element 3 and the contactor coil 1 are connected in series, the contactor coil 1 being arranged between the current sensor 2 and the switching element 3.
  • the freewheeling diode 4 overlaps the contactor coil 1 and the current sensor 2.
  • the current sensor 2 is designed as a resistor 1, the switching element 3 as a MOSFET 3.
  • the control circuit 5 is designed as a microprocessor 5. It is supplied with power via a 5 l power supply device. It can be given a control command on the basis of which the switching element 3 can be actuated.
  • the switching element 3 is actuated via a coupling element 7, by means of which the control circuit 5 is electrically isolated from the switching element 3.
  • the coupling element 7 can, for. B. be an optocoupler 7.
  • the switching element 3 is open. No contactor current I flows through the contactor coil 1. If, however, a control command is given to the control circuit 5, a contactor current I flows through the contactor coil 1.
  • the control circuit 5 is connected to the current sensor 2.
  • the contactor current I can thus be detected and regulated.
  • the control takes place in such a way that the switching element 3 is initially closed. This causes the contactor current I to rise.
  • the contactor current I reaches a maximum current I max , the switching element 3 is opened.
  • the contactor current I is thus reduced via the freewheeling diode 4.
  • the contactor current I reaches a minimum current I min , the switching element 3 is closed again. The opening and closing of the switching element 3 will repeated repeatedly until the control circuit 5 is no longer given a control command. There is therefore a two-point control of the contactor current I.
  • the minimum current I m i n and the maximum current I max can be predefined in a simple manner, the drive circuit 5 as a parameter. So you can select them.
  • control circuit 5 and the current sensor 2 are connected to a common supply connection 8 for the contactor circuit. This enables direct detection of the contactor current I without a potential shift between the control circuit 5 and the current sensor 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)

Abstract

L'invention concerne un circuit contacteur dans lequel un détecteur de courant (2) et un élément de commutation (3) sont montés en série avec une bobine de contacteur (1). Une diode de roue libre (4) recouvre la bobine de contacteur (1) et le détecteur de courant (2). La bobine de contacteur (1) permet d'actionner au moins un contact de charge (6). Il est possible de transmettre à un circuit de déclenchement (5) une commande de déclenchement sur la base de laquelle l'élément de commutation (3) est actionné. Le circuit de déclenchement (5) est relié au détecteur de courant (2) de sorte qu'il est possible de réguler un courant de contacteur (I) traversant la bobine de contacteur (1).
PCT/DE2000/001940 1999-06-25 2000-06-13 Circuit contacteur WO2001001538A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19929225.6 1999-06-25
DE19929225 1999-06-25

Publications (1)

Publication Number Publication Date
WO2001001538A1 true WO2001001538A1 (fr) 2001-01-04

Family

ID=7912574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001940 WO2001001538A1 (fr) 1999-06-25 2000-06-13 Circuit contacteur

Country Status (1)

Country Link
WO (1) WO2001001538A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014060183A1 (fr) * 2012-10-18 2014-04-24 Robert Bosch Gmbh Circuit de commande d'au moins un fusible et procédé de fonctionnement d'au moins un fusible
WO2014060184A1 (fr) * 2012-10-18 2014-04-24 Robert Bosch Gmbh Circuit de commande destiné à au moins deux fusibles et procédé de fonctionnement d'au moins deux fusibles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2425585A1 (de) * 1973-07-19 1975-02-06 Jenoptik Jena Gmbh Anordnung zum schnellen und verlustarmen schalten von induktivitaeten
EP0319669A2 (fr) * 1987-12-10 1989-06-14 WABCO Vermögensverwaltungs-GmbH Régulateur de courant
DE4134056A1 (de) * 1990-10-18 1992-04-23 Zahnradfabrik Friedrichshafen Stromregelschaltung fuer ein elektromagnetisches proportional-stellglied
DE19711768A1 (de) * 1997-03-21 1998-09-24 Mannesmann Rexroth Ag Elektromagnetischer Stellantrieb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2425585A1 (de) * 1973-07-19 1975-02-06 Jenoptik Jena Gmbh Anordnung zum schnellen und verlustarmen schalten von induktivitaeten
EP0319669A2 (fr) * 1987-12-10 1989-06-14 WABCO Vermögensverwaltungs-GmbH Régulateur de courant
DE4134056A1 (de) * 1990-10-18 1992-04-23 Zahnradfabrik Friedrichshafen Stromregelschaltung fuer ein elektromagnetisches proportional-stellglied
DE19711768A1 (de) * 1997-03-21 1998-09-24 Mannesmann Rexroth Ag Elektromagnetischer Stellantrieb

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014060183A1 (fr) * 2012-10-18 2014-04-24 Robert Bosch Gmbh Circuit de commande d'au moins un fusible et procédé de fonctionnement d'au moins un fusible
WO2014060184A1 (fr) * 2012-10-18 2014-04-24 Robert Bosch Gmbh Circuit de commande destiné à au moins deux fusibles et procédé de fonctionnement d'au moins deux fusibles
CN104718099B (zh) * 2012-10-18 2020-09-01 罗伯特·博世有限公司 用于至少一个接触器的控制电路和用于至少一个接触器的运行的方法

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