EP0911840A2 - Schaltung zur Steuerung eines Elektromagneten - Google Patents

Schaltung zur Steuerung eines Elektromagneten Download PDF

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Publication number
EP0911840A2
EP0911840A2 EP98402623A EP98402623A EP0911840A2 EP 0911840 A2 EP0911840 A2 EP 0911840A2 EP 98402623 A EP98402623 A EP 98402623A EP 98402623 A EP98402623 A EP 98402623A EP 0911840 A2 EP0911840 A2 EP 0911840A2
Authority
EP
European Patent Office
Prior art keywords
switch
coil
phase
current generator
current
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.)
Withdrawn
Application number
EP98402623A
Other languages
English (en)
French (fr)
Other versions
EP0911840A3 (de
Inventor
Karim Benkaroun
Yves Guermeur
Daniel Riffaud
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric SE
Schneider Electric Industries SAS
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 Schneider Electric SE, Schneider Electric Industries SAS filed Critical Schneider Electric SE
Publication of EP0911840A2 publication Critical patent/EP0911840A2/de
Publication of EP0911840A3 publication Critical patent/EP0911840A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1816—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator
    • 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
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1833—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by changing number of parallel-connected turns or windings

Definitions

  • the present invention relates to a control circuit for an electromagnet with two coils, namely a first coil supplied on call and a second coil supplied with maintenance.
  • this circuit including a source of DC voltage to power the coils, as well as a first switch and a second switch respectively associated with the coil call and the holding coil to control the passage of the current.
  • patent DE-21 28 651 a control circuit for an electromagnet is described. with two coils.
  • the duration of which is determined by charging a capacitor at a level determined by a Zener diode, the two coils are supplied to provide the energy necessary to closing the electromagnet; in the maintenance phase, only one of the coils continue to be energized.
  • this control circuit has the disadvantage to require a source of energy capable of powering at the same time time to call the two coils.
  • the present invention aims to allow the use of a source reduced level energy, for example similar to call and hold, and to simplify the control circuit necessary for this purpose.
  • the current generator can be dimensioned to provide energy constant and relatively small; the calling energy of the electromagnet comes from the permanent energy developed by the second coil from of the current generator and the auxiliary energy developed by the first coil using capacity.
  • the first switch is located between the current generator and capacity and connected to the current generator via a non-return diode, while the second switch is placed in series with the parallel mounting of the two coils so as to be closed for the call phase and during the hold phase and open at rest.
  • the generator can deliver an adjustable current level, the control member being connected to the current generator for transmit a higher current setpoint to it during the call phase than during the maintenance phase.
  • the control member being connected to the current generator for transmit a higher current setpoint to it during the call phase than during the maintenance phase.
  • Figure 1 shows the diagram of a control circuit according to the invention.
  • Figure 2 is a graph showing the variation of the current in the coils during an order cycle.
  • the control circuit shown is associated with the electromagnet E of a electromechanical contactor whose contacts are to be closed and opened in response to a start or stop command.
  • the control circuit includes terminals A1, A2 connected to a DC voltage source or rectified alternating voltage V; the application of this voltage is determined by a mechanical or electronic on-off switch S.
  • the positive terminal Ai and the negative terminal A2 of the circuit are connected by positive 1 and negative 2 conductors respectively to a control member 10 and two coils L1, L2 generating the required ampere-turns.
  • a current generator 11 is provided at the input of the control circuit able to supply a relatively small and preferably constant current, by example of the order of 100 mA.
  • the upper terminal of the coil L1 is connected to the positive conductor 1 by via a non-return diode D1 and a switch T1 constituted by example by a transistor.
  • the upper terminal of coil L2 is connected directly to the positive conductor 1.
  • the coils L1 and L2 are arranged in parallel and their lower terminal is connected to the negative conductor 2 via a switch T2 constituted for example by a transistor.
  • a Zener Z1 diode can optionally be provided to bypass switch T2.
  • a capacity C1 which is used to supply the coil L1 in the call phase is connected between the upper terminal of L1 and the negative conductor 2.
  • the controller 10 has inputs 10a, 10b connected to the circuit upstream of the current generator il and respectively at a point of the circuit close to the capacity Ci to detect the voltage V and respectively the voltage VC1 of the capacity; it has outputs 10c, 10d to drive the switches T1 and T2 respectively.
  • the current generator delivers a high current level 12A or a low current level 12B depending a switching signal or a switchable current setpoint supplied by the control unit 10.
  • Switch S is initially open, so that the solenoid is deactivated and that the contactor contacts are open; switch S is closed at time t0 to activate the electromagnet in order to close the contacts of the contactor.
  • control member detects a sufficient voltage at its input 10a at terminals A1, A2, it triggers the call phase by making T1 passing, while keeping T2 blocked, so that the capacity Ci load (figure 2-A).
  • the control device detects a voltage at its input 10b sufficient charge of capacity C1, and consequently it blocks T1 and makes T2 pass ( Figures 2-B and 2-D).
  • the capacity C1 discharges in the coil L1 (figure 2-C), while the coil L2 is directly powered by the current generator 11 (left part of the figure 2-E).
  • the energy then supplied jointly by the coils L1 and L2 allows to close the contactor contacts.
  • the end t2 of the call phase is determined by the member 10 which leaves the transistors T1, T2 in the previous state and which transmits to the generator current there a setpoint change signal, the latter passing through example from 100 mA to 50 mA to reduce the energy consumption of the holding control circuit (see right part of Figure 2-E).
  • the L2 coil is then de-energized controlled at time t3 by opening the switch S.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
EP98402623A 1997-10-24 1998-10-21 Schaltung zur Steuerung eines Elektromagneten Withdrawn EP0911840A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9713480A FR2770332B1 (fr) 1997-10-24 1997-10-24 Circuit de commande d'electroaimant
FR9713480 1997-10-24

Publications (2)

Publication Number Publication Date
EP0911840A2 true EP0911840A2 (de) 1999-04-28
EP0911840A3 EP0911840A3 (de) 1999-06-16

Family

ID=9512720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402623A Withdrawn EP0911840A3 (de) 1997-10-24 1998-10-21 Schaltung zur Steuerung eines Elektromagneten

Country Status (4)

Country Link
US (1) US6101082A (de)
EP (1) EP0911840A3 (de)
JP (1) JPH11213831A (de)
FR (1) FR2770332B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065677A3 (de) * 1999-06-30 2001-12-12 Denso Corporation Steuerungsvorrichtung für einen elektromagnetischen Verbraucher mit variabele antriebs- und start Energieverzorgung
EP2385533A3 (de) * 2010-05-06 2017-11-15 K.A. Schmersal Holding KG Zuhaltung mit einem Elektromagneten

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948632B4 (de) * 1999-10-08 2005-08-11 Siemens Ag Aktoreinheit mit einem Grundaktor, einem Zusatzaktor und einer Ansteuereinheit
US6556413B1 (en) * 1999-12-30 2003-04-29 Square D Company Method of providing electrical current to a contactor circuit
US6497221B1 (en) * 2000-11-06 2002-12-24 Robert Bosch Corporation Feedback tailoring of fuel injector drive signal
WO2015152938A1 (en) 2014-04-04 2015-10-08 Schneider Electric It Corporation Systems and methods for quick power delivery mode changes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689808A (en) * 1969-10-24 1972-09-05 Lucifer Sa Control system for an electromagnet
EP0196960A1 (de) * 1985-03-28 1986-10-08 Regie Nationale Des Usines Renault Steuereinrichtung für schnell zu betätigende elektromagnetische Anordnungen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510951A (en) * 1994-08-01 1996-04-23 Eaton Corporation Electronic control for 3-wire DC coils
US5592356A (en) * 1994-09-27 1997-01-07 Synchro-Start Products, Inc. Dual coil actuator with timing circuit
US5717562A (en) * 1996-10-15 1998-02-10 Caterpillar Inc. Solenoid injector driver circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689808A (en) * 1969-10-24 1972-09-05 Lucifer Sa Control system for an electromagnet
EP0196960A1 (de) * 1985-03-28 1986-10-08 Regie Nationale Des Usines Renault Steuereinrichtung für schnell zu betätigende elektromagnetische Anordnungen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065677A3 (de) * 1999-06-30 2001-12-12 Denso Corporation Steuerungsvorrichtung für einen elektromagnetischen Verbraucher mit variabele antriebs- und start Energieverzorgung
US6407593B1 (en) 1999-06-30 2002-06-18 Denso Corporation Electromagnetic load control apparatus having variable drive-starting energy supply
EP1288974A2 (de) * 1999-06-30 2003-03-05 Denso Corporation Steuerungsvorrichtung für einen elektromagnetischen Verbraucher mit variabel antriebs- und start Energieversorgung
EP1288974A3 (de) * 1999-06-30 2003-06-04 Denso Corporation Steuerungsvorrichtung für einen elektromagnetischen Verbraucher mit variabel antriebs- und start Energieversorgung
EP2385533A3 (de) * 2010-05-06 2017-11-15 K.A. Schmersal Holding KG Zuhaltung mit einem Elektromagneten

Also Published As

Publication number Publication date
EP0911840A3 (de) 1999-06-16
JPH11213831A (ja) 1999-08-06
FR2770332B1 (fr) 1999-12-03
US6101082A (en) 2000-08-08
FR2770332A1 (fr) 1999-04-30

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