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EP0353533B1 - Circuit d'étage de sortie pour la commande d'électro-aimants - Google Patents

Circuit d'étage de sortie pour la commande d'électro-aimants Download PDF

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Publication number
EP0353533B1
EP0353533B1 EP89113115A EP89113115A EP0353533B1 EP 0353533 B1 EP0353533 B1 EP 0353533B1 EP 89113115 A EP89113115 A EP 89113115A EP 89113115 A EP89113115 A EP 89113115A EP 0353533 B1 EP0353533 B1 EP 0353533B1
Authority
EP
European Patent Office
Prior art keywords
auxiliary voltage
circuit arrangement
diode
voltage
arrangement 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.)
Expired - Lifetime
Application number
EP89113115A
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German (de)
English (en)
Other versions
EP0353533A1 (fr
Inventor
Joachim Dipl.-Ing. Morsch (Fh)
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.)
Hydac Technology GmbH
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Hydac Technology GmbH
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Filing date
Publication date
Application filed by Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP0353533A1 publication Critical patent/EP0353533A1/fr
Application granted granted Critical
Publication of EP0353533B1 publication Critical patent/EP0353533B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to an output stage circuit arrangement for the control of working currents in solenoids, in particular for the actuation of continuous valves, with at least one switching element which can be reversed for current control between the blocking and on-state and at least one inductive component which leads to voltages induced by switch-off processes during the switching element transition into the blocking state .
  • Power amplifier circuit arrangements of this type are known and are widely used for both industrial and automotive control purposes. These circuit arrangements are operated with direct voltage, usually with a voltage of 24 volts to ground, which is grounded as a zero reference point. For the operation of such circuit arrangements Auxiliary voltages are required in controller circuits, for example to generate signals for the actual value or status feedback for the controller. Feedback signals of this type are usually symmetrical ⁇ 10 volt signals to the ground, ie to the zero reference point.
  • auxiliary voltage which is negative with respect to ground, cannot be generated directly from the positive supply voltage.
  • DC converters are therefore provided to obtain the auxiliary voltage.
  • the presence of the DC-DC converter consisting of transformer and associated control circuit hinders the desired goal of making the circuit arrangement so compact that it can itself be accommodated on the actuating magnet to be actuated.
  • the object of the invention is to remedy this in a particularly simple, inexpensive to manufacture and compact circuit arrangement.
  • the inductive component is provided as an energy source for obtaining an auxiliary voltage -UH or + UH and is connected to an auxiliary voltage control or regulating circuit via a decoupling device.
  • an inductive component contained in the circuit arrangement which leads to induced voltages during operation, forms the energy source for the auxiliary voltage generation, eliminates the need to provide and accommodate an additional transformer, as is usually the case Auxiliary voltage generation by means of voltage converter circuits is provided.
  • the invention therefore opens up the possibility of integrating the entire electronics together with an associated control valve into a compact structural unit.
  • the excitation winding of the actuating magnet itself is preferably provided as an energy source, that is to say forms the choke, from which at least part of the switch-off energy converted in it is drawn, which is induced during the switch-off processes taking place during operation.
  • the switch-off processes take place e.g. according to the modulation clock frequency.
  • the switch-off energy is reduced in the known circuit arrangements by means of freewheeling diodes.
  • a switching element is provided which is controlled by the auxiliary voltage control or regulating circuit .
  • the switching element is a thyristor, which is converted into the ignition state by the auxiliary voltage control or regulating circuit as soon as the auxiliary voltage removed from the inductive energy source via the decoupling device reaches the desired value.
  • the switch-off energy of the inductive energy source is only derived in this way for the auxiliary voltage generation via the decoupling device until the desired size of the auxiliary voltage is available and the thyristor ignites, after which it behaves like a freewheeling diode of the excitation winding until the Thyristor blocks again at the following zero crossing of the negative induction voltage.
  • a positive auxiliary voltage can be generated.
  • the generation of a positive auxiliary voltage can be particularly expedient if the positive auxiliary voltage is higher than the supply voltage of the circuit arrangement.
  • the higher positive voltages are required in certain applications, for example when using N-channel switching MOSFETs.
  • the negative auxiliary voltage can also be generated with a voltage value that is higher than the amount of the positive supply voltage.
  • a diode can be provided as the decoupling device.
  • the auxiliary voltage control or regulating circuit can contain a zener diode as a voltage regulator.
  • both excitation windings can be used to generate auxiliary voltage via a diode which serves as a decoupling device, the energy being drawn from the respectively activated winding.
  • the generation of a negative and a positive auxiliary voltage can be provided simultaneously in one and the same circuit arrangement. In no case does the measures for auxiliary voltage generation provided in the invention impair the operating properties of the relevant output stage arrangement.
  • the output stage arrangement works on positive operating voltage U + to ground with semiconductor switches 3 and 5 located in the load branch, which can be controlled via an input stage 7, the control input 8 of which is connected to a control unit 9.
  • Both winding ends of the excitation winding 1 are connected in a conventional manner to free-wheeling diodes 11 and 13 for the reduction of induction voltages against ground or against the operating voltage U +, which are induced in the excitation winding 1 due to the switching-off processes of the semiconductor switches 3 and 5 taking place during operation.
  • the switch-off processes take place in accordance with the modulation clock frequency, which is approximately in the range from 10 KHz to 200 KHz.
  • Fig. 2 shows the output stage arrangement of Fig. 1 with devices for generating a negative auxiliary voltage -UH. 1 is omitted and replaced by a thyristor 15, which is arranged in the same polarity as the freewheeling diode 11 in FIG. 1, that is to say with its anode side connected to ground and with its cathode side with the winding end point 16 of the excitation winding 1 is connected, which carries the negative induction voltage during operation.
  • Point 16 also connects the cathode side of a decoupling diode 19, the anode of which is connected to the negative terminal 21 of a charging capacitor 22, the positive terminal of which is connected to ground.
  • An auxiliary voltage control circuit 25 connected to the control connection 23 of the thyristor 15 is provided for converting the thyristor 15 into the ignition state.
  • the circuit 25 has a control input 27 connected to the negative terminal 21 of the charging capacitor 22. When a desired charging voltage at the charging capacitor 22, which is present at the control input 27, is reached, the circuit 25 controls the thyristor 15 via its control connection 23 into the on or ignition state.
  • the thyristor 15 behaves in the same way as that after transitioning into the ignition state Free-wheeling diode 11 of Fig. 1.
  • the charging capacitor 22 is charged via the decoupling diode 19 to generate a negative auxiliary voltage until a desired value of the voltage -UH, for example -15 volts, is reached and the thyristor 15 by the Circuit 25 is controlled in the ignition state.
  • the cut-off energy leading to the occurrence of a negative induction voltage at point 16 of the excitation winding 1 is thus diverted via the diode 19 into the auxiliary voltage generation until the desired auxiliary voltage is available and the thyristor 15 ignites.
  • Fig. 3 shows an embodiment similar to Fig.2, but in the form of a double output stage with a second excitation winding 31, which serves to move an actuator in question in the direction of movement that is opposite to the direction of movement in which the actuator by means of the first excitation winding 1 is moved.
  • a control input 38 of the circuit part of the double output stage which actuates the excitation winding 31, like the control input 8 assigned to the first excitation winding 1, is connected to the control unit 9.
  • a second coupling-out diode 39 corresponding to the coupling-out diode 19 is connected, which supplies the switching-off energy to the negative connection 21 of the charging capacitor 22.
  • a second thyristor 35 connected at point 36 which, like the first thyristor 15, has its control terminal 33 connected to the auxiliary voltage regulating circuit 25, is controlled thereby in the same way as the first thyristor 15 and acts in the ignition state like one at point 36 the excitation winding 31 connected freewheeling diode.
  • the negative auxiliary voltage -UH is generated due to the cut-off energies of both excitation windings 1 and 31.
  • FIG. 4 The operation of the example of FIG. 4 corresponds to that of the arrangement of FIG. 2, apart from the fact that not the free-wheeling diode 11 of FIG. 1 is replaced by a thyristor, but the free-wheeling diode 13 is omitted, which at the winding end point carrying a positive induction voltage during shutdown processes 46 of the excitation winding 1 is connected.
  • a device for generating a positive auxiliary voltage + UH is provided in FIG. 4, which is constructed exactly the same as the device shown for this purpose in FIG. 2, only the polarities of the charging capacitor 22, decoupling diode 19 and thyristor 15 are selected in accordance with the positive sign of the voltage generated.
  • the charging capacitor 22 is connected with its positive terminal 41 to the decoupling diode 19 and with its other terminal to the positive operating voltage U +.
  • the generation of a positive auxiliary voltage + UH is interesting, for example, in cases where a positive voltage, for example when using N-channel switching MOSFET'S, is required which is higher than the operating voltage U + of the output stage arrangement.
  • FIGS. 5 and 6 show output stage arrangements of the type shown in FIGS. 2 and 4, but details of the design of the auxiliary voltage control circuit are shown in FIGS. 5 and 6.
  • this has a zener diode 51 as a voltage regulator, which is arranged in series with a resistor 53 so that the induced auxiliary voltage is applied to it.
  • the Zener diode 51 is selected so that its breakdown voltage is that to be generated Auxiliary voltage is adjusted.
  • the control terminal 23 of the thyristor 15 changes in potential, as a result of which the latter comes into the ignition state.
  • the thyristor 15 has the effect of the freewheeling diode 11 in the circuit of FIG. 5 and the effect of the freewheeling diode 13 in FIG. 1 in the circuit of FIG. 6.
  • the thyristor 15 comes into the blocking state. It remains in this if the breakdown voltage of the Zener diode 51 has not been reached. If this is the case, then the thyristor 15 is brought back into the ignition state.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Control Of Eletrric Generators (AREA)

Claims (9)

  1. Agencement de l'étage final ou de sortie du montage qui commande les courants de travail dans les électro-aimants de réglage ou de positionnement, notamment pour actionner des valves à action permanente, qui comprend un élément de commutation (3,5) pouvant se déplacer entre une position de blocage et une position de circulation ou de passage afin de régler le débit, et, au moins, un composant (1; 31) dans lequel circulent des courants d'induction résultant des transitions d'état du composant de commutation (1; 31), caractérisé en ce que le composant inductif (1; 31) fait fonction de source d'énergie pour obtenir une tension auxiliaire positive ou négative (-UH ou +UH) et en ce qu'il est relié par un dispositif de découplage à un circuit de commande ou de réglage (25) de la tension auxiliaire.
  2. Agencement selon la revendication 1, caractérisé en ce que l'enroulement d'excitation (1;31) de l'électro-aimant de réglage constitue ladite source d'énergie.
  3. Agencement selon la revendication 1 ou 2, caractérisé en ce que le dispositif de découplage est constitué par une diode (19; 39).
  4. Agencement selon la revendication 3, caractérisé en ce que, dans le cas d'un étage final ou de sortie opérant avec une tension d'alimentation positive par rapport à la masse, la diode (19; 39) est connectée, afin de produire une tension auxiliaire (UH-) négative par rapport à la masse, à un point (16) de l'enroulement de la source d'énergie dans lequel circule une tension d'induction négative par rapport à la masse.
  5. Agencement selon la revendication 3, caractérisé en ce que dans le cas d'un étage final ou de sortie opérant avec une tension d'alimentation positive (+UH) par rapport à la masse, l'anode de la diode (19; 39) est connectée à un point (46) de l'enroulement de la source d'énergie dans lequel circule une tension d'induction positive par rapport à la masse.
  6. Agencement selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le circuit de commande ou de réglage (25) de la tension auxiliaire coopère avec un condensateur (22) monté en série avec la diode (19; 39).
  7. Agencement selon la revendication 6, caractérisé en ce que le circuit de commande ou de réglage de la tension auxiliaire (25) coopère avec un thyristor (15; 35) et présente un organe de réglage de tension qui, en fonction de la grandeur de la tension auxiliaire, transfère celui-ci en état de conduction, cependant que le thyristor (15; 35) est relié, au point de connexion (16; 46) de la diode de découplage (19; 39) à la source d'énergie et est monté de façon que quand il est allumé, il fait fonction de diode de découplage à l'égard de la source d'énergie.
  8. Agencement selon l'une quelconque des revendications 1 à 7, caracterisé en ce que, dans le cas d'un double étage final ou de sortie pour deux enroulements d'excitation d'électro-aimants (1; 31), chaque enroulement d'excitation (1 et 31) fait fonction de source d'énergie et est connecté par un dispositif de découplage, au circuit de réglage (25) ou respectivement à l'un des circuits de réglage (25).
  9. Agencement selon la revendication 7 ou 8, caractérisé en ce que le circuit de commande ou de réglage de la tension auxiliaire (25) comporte une diode de Zéner (51) faisant fonction de réglage de tension.
EP89113115A 1988-08-01 1989-07-18 Circuit d'étage de sortie pour la commande d'électro-aimants Expired - Lifetime EP0353533B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826087A DE3826087A1 (de) 1988-08-01 1988-08-01 Schaltungsanordnung bei endstufen fuer die steuerung von stellmagneten
DE3826087 1988-08-01

Publications (2)

Publication Number Publication Date
EP0353533A1 EP0353533A1 (fr) 1990-02-07
EP0353533B1 true EP0353533B1 (fr) 1992-10-21

Family

ID=6360006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113115A Expired - Lifetime EP0353533B1 (fr) 1988-08-01 1989-07-18 Circuit d'étage de sortie pour la commande d'électro-aimants

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EP (1) EP0353533B1 (fr)
DE (2) DE3826087A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434179A1 (de) * 1994-09-24 1996-03-28 Teves Gmbh Alfred Schaltungsanordnung zur Überwachung einer Steuerschaltung
FR2786914B1 (fr) * 1998-12-07 2001-01-12 Schneider Electric Ind Sa Dispositif de commande d'un electro-aimant, avec un circuit d'alimentation alimente par le courant de maintien de l'electro-aimant
DE19911863A1 (de) * 1999-03-17 2000-09-21 Philips Corp Intellectual Pty Schaltungsanordnung zum Steuern eines Aktuators
DE10040275A1 (de) * 2000-08-14 2002-02-28 Braun Gmbh Schaltungsanordnung und Elektrogerät mit einem Elektromotor und einem Drosselwandler
DE112013005173B4 (de) * 2012-10-29 2025-11-20 Eaton Intelligent Power Limited Ansteuerschaltung für den elektromagnetischen Antrieb eines Schaltgeräts, insbesondere eines Schützes
CN120528218A (zh) * 2024-02-21 2025-08-22 施耐德电气工业公司 开关设备和用于控制开关设备的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1409461A (fr) * 1964-07-17 1965-08-27 Alcatel Sa Procédé d'alimentation économique pour l'établissement rapide d'un courant dans une bobine, et ses applications
DE2203883A1 (de) * 1971-02-08 1972-08-24 Zentronik Veb K Einrichtung zum Laden von Energiespeicherkondensatoren für impulsmäßig angesteuerte Elektromagnete
US3754166A (en) * 1971-06-14 1973-08-21 Centronics Data Computer A driver circuit for actuating print wire solenoids
DD106119A1 (fr) * 1973-07-09 1974-05-20
DE3213515A1 (de) * 1982-04-10 1983-10-20 Honeywell and Philips Medical Electronics B.V., 5611 Eindhoven Erregerschaltung fuer magnetventile
DE3240352C2 (de) * 1982-11-02 1985-07-18 Danfoss A/S, Nordborg Elektronische Schaltvorrichtung
FR2569239A1 (fr) * 1984-03-05 1986-02-21 Mesenich Gerhard Procede pour commander une soupape d'injection electromagnetique
DE3628988A1 (de) * 1986-08-26 1988-03-03 Cornelius Lungu Anwendungsbeispiele einer kapazitiv energie speichernden induktiven wicklung
DE3604579A1 (de) * 1986-02-14 1987-08-27 Cornelius Lungu Energiespeichernde induktive wicklung
DE3702680A1 (de) * 1986-02-18 1987-10-29 Bosch Gmbh Robert Verfahren und schaltung zur ansteuerung von elektromagnetischen verbrauchern
FR2599183B1 (fr) * 1986-05-21 1988-08-26 Telemecanique Electrique Procede et dispositif de commande d'un electro-aimant dont l'excitation par un courant periodique monoarche, provoque l'actionnement d'une piece mobile
DE3624231A1 (de) * 1986-07-18 1988-01-28 Honeywell Regelsysteme Gmbh Verfahren zur anzeige einer magnetventilbetaetigung und schaltungsanordnung zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
DE58902496D1 (de) 1992-11-26
EP0353533A1 (fr) 1990-02-07
DE3826087A1 (de) 1990-02-08

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