EP1527470A1 - Ensemble de commande pour entrainement electromagnetique - Google Patents

Ensemble de commande pour entrainement electromagnetique

Info

Publication number
EP1527470A1
EP1527470A1 EP03784086A EP03784086A EP1527470A1 EP 1527470 A1 EP1527470 A1 EP 1527470A1 EP 03784086 A EP03784086 A EP 03784086A EP 03784086 A EP03784086 A EP 03784086A EP 1527470 A1 EP1527470 A1 EP 1527470A1
Authority
EP
European Patent Office
Prior art keywords
voltage
control
switching means
drive coil
switching
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.)
Granted
Application number
EP03784086A
Other languages
German (de)
English (en)
Other versions
EP1527470B1 (fr
Inventor
Wilhelm Melchert
Gerd Schmitz
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1527470A1 publication Critical patent/EP1527470A1/fr
Application granted granted Critical
Publication of EP1527470B1 publication Critical patent/EP1527470B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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

Definitions

  • the invention relates to a control arrangement for an electromagnetic drive, in particular the drive of an electromagnetic switching device.
  • the electromagnetic drive generally consists of a drive coil, a magnetic core and a magnet armature.
  • the drive control essentially contains a rectifier circuit fed via control inputs, a series connection of the drive coil fed by the rectifier circuit with a pulse-width-controlled transistor switch, two voltage divider circuits that interrogate the output of the rectifier circuit and are separated on the input side by a separating diode, and an electronic arrangement with a microprocessor and two To save.
  • the electronic arrangement emits control signals to the transistor for the pull-in and hold operation of the drive coil, the corresponding pulse widths in pull-in and hold operation being determined in accordance with the output signal of the assigned voltage divider via the assigned memory.
  • a circuit arrangement for controlling a relay is known from the publication DE 92 16 041 U1.
  • the series Circuit of the drive coil with a first transistor switch, and parallel to the switching path of the first transistor switch is the series connection of a holding resistor with a second transistor switch.
  • a DC voltage control input is connected to the control electrode of the first transistor switch via a differentiating timing element comprising a capacitor and a discharge resistor and to the control electrode of the second transistor switch via a series resistor.
  • both the first and the second transistor switch are turned on, as a result of which a pull-in voltage is applied across the drive coil, which results from the DC operating voltage reduced by the residual voltage of the first transistor switch.
  • the first transistor switch goes into the blocking state.
  • the drive coil is thus only subjected to a holding current which essentially results from the ratio of the DC operating voltage to the sum of the holding resistance and the ohmic resistance of the drive coil.
  • the second transistor switch is also blocked and the relay is thus switched off.
  • a circuit arrangement according to DE 44 10 819 C2, intended for the operation of a relay in turn has a first transistor switch which is activated in the tightening phase and a second transistor switch which is connected in series with the drive coil and a holding resistor via a DC operating voltage and is activated when the relay is switched on.
  • the switching path of the first transistor switch is parallel to the holding resistor.
  • a DC voltage control input is connected to the control electrode of the second transistor switch via a voltage divider.
  • the control electrode of the first transistor switch is connected to the connection point of the first transistor switch, second transistor switch and holding resistor via an integrating timing element consisting of a charging resistor and a capacitor.
  • Solenoid coils have a transistor switch in series with the solenoid coil. As soon as a control voltage is applied, the controlled transistor switch applies a high starting current to the solenoid during a time interval specified by a differentiating timer. The holding current is then determined by a series circuit comprising a holding resistor and a light-emitting diode which is arranged in parallel with the switching path of the transistor switch.
  • the pull-in and holding currents are heavily dependent on the level of the control voltage and a considerable amount of power is lost via the holding resistor.
  • the object of the invention is therefore an uncomplicated, low-power and largely voltage-independent control arrangement.
  • the object is achieved according to the invention by the circuit arrangement according to the invention.
  • a starting voltage and, in contrast, a substantially lower holding voltage become
  • the amount of the tightening voltage is below the permissible Range for the operating voltage and is largely independent of the level of the control voltage.
  • the holding voltage is regulated to a value that is far below the pull-in voltage.
  • the control arrangement is simultaneously supplied by the voltage applied to the control input, which can be selected as DC voltage or as AC voltage. After the control voltage is applied, the operating voltage is built up directly via the rectifier arrangement. Due to the build-up of the operating voltage, a timer is activated on the one hand and the holding voltage is built up via the DC voltage converter.
  • the activated voltage source causes the drive coil to carry current through the first switching means, the switching path of the second switching means lying in series with the drive coil being controlled at the same time.
  • a isolating diode prevents the pull-in voltage from reaching through to the output of the DC-DC converter. After a certain time, that is, after the tightening time has elapsed, the timer deactivates the voltage source and thus also the first switching means. The supply of the drive coil and the continued control of the second
  • the proposed control arrangement requires no complex digital means, in particular no microcontroller.
  • the control arrangement is suitable both for DC drives and for AC drives and in particular for smaller magnetic drives
  • AC magnetic drives with low-resistance drive coils can also be used with the control arrangement according to the invention, which are otherwise only suitable for AC operation without using the proposed control arrangement. Therefore, you can only rely on AC- Limit drives so that the necessary variants for the drive coils are reduced, thereby significantly reducing costs.
  • the timing element can advantageously be implemented by a simple integrating or differentiating RC element (also referred to as a low-pass or high-pass).
  • a simple integrating or differentiating RC element also referred to as a low-pass or high-pass.
  • a voltage limiting element for example a Z diode, leads to a limitation of the final charge voltage and thus to a significant reduction in the dependence of the charging or discharging process on the level of the operating voltage.
  • the controllable voltage source consists in a cost-effective manner of a voltage limiter arrangement combined with a threshold circuit.
  • the charging voltage rising at the charging capacitor of the RC element is usually evaluated by the threshold switch as a determining value for the end of the tightening phase.
  • the voltage dropping at the discharge resistor as a result of the discharge current is usually evaluated by the threshold switch.
  • Freewheel means for example a Z-diode, arranged parallel to the switching path of the second switching means ensure rapid demagnetization of the drive coil when switched off — possibly in cooperation with other freewheel means.
  • FIG 1 the schematic representation of the control arrangement according to the invention
  • Figure 2 the detailed representation of an advantageous embodiment of the control arrangement according to the invention. Best way to carry out the invention
  • the control arrangement 2 shown in FIG. 1 for a drive coil 4 of a magnetic drive, not shown, of an electromagnetic switching device, for example a contactor, is operated by a control voltage Ue via a control input 6.
  • the control voltage Ue can be applied either as a DC voltage or as an AC voltage.
  • a smoothed operating voltagemot is present at the output of a rectifier arrangement 8, which serves, inter alia, to supply power to the control arrangement 2 and the drive coil 4.
  • the rectifier arrangement 8 is followed by a DC voltage converter 10, which generates a considerably lower smoothed holding voltage Uh from the operating voltage U1.
  • a timing element 12 is triggered by the rapidly increasing operating voltage U1, the timing of which is decisive for the duration of the tightening phase of the control arrangement 2.
  • the triggered timer 12 activates a voltage source 14 which, in the active state, outputs a pull-in voltage Ua derived from the operating voltage U1 at its output.
  • the magnitude of the starting voltage Ua is below the amount of the minimum permissible operating voltage Ui and is largely independent of the operating voltage U i within a wide range.
  • the starting voltage Ua activates first electronic switching means 16, which act as a voltage follower and whose output is connected to the first connection 18 of the drive coil 4.
  • the tightening phase there is therefore a potential at the first connection 18 of the drive coil 4 which, owing to a component-related residual voltage of the first switching means 16, differs only slightly from the tightening voltage Ua.
  • the output of the first switching means 16 is also connected to the control input of second electronic switching means 22, the switching path of which leads from the second connection 20 of the drive coil 4 to the reference potential of the operating voltage U1.
  • the pull-in voltage Ua causes the switching path of the second switching means 22 to be controlled.
  • the drive coil 4 is acted upon by a voltage, the amount of which, compared to the pull-in voltage Ua, is slightly reduced by the residual voltages of the two switching means 16 and 22.
  • a separating diode 24 is guided from the output of the direct voltage converter 10 in the forward direction to the output of the first switching means 16.
  • the isolating diode 24 blocks, since the magnitude of the tightening voltage Ua is significantly greater than the magnitude of the holding voltage Uh.
  • the output signal of the timing element 12 has changed so far that the pull-in voltage Ua that was present at the output of the voltage source 14 is switched off.
  • the voltage at the output of the first switching means 16 drops to such an extent that the holding voltage Uh now passes through the isolating diode 24 to the first connection 18 of the drive coil 4 and to the control input of the second switching means 22.
  • the holding phase has now begun.
  • the drive coil 4 is supplied with a voltage, the amount of which is reduced compared to the holding voltage Uh only by the residual voltages of the conductive isolating diode 24 and the controlled switching path of the second switching means 22.
  • FIG. 2 shows a detailed advantageous embodiment of the control arrangement 2 described above.
  • the reference numerals used in FIG. 1 have been adopted for the function groups.
  • the rectifier arrangement 8 consists in the usual way of an input-side limiter arrangement 28, a bridge rectifier 26 and an output-side first smoothing capacitor 30. After the control voltage Ue has been applied, the operating voltage U i has run up in a short time. When driving and operating the control arrangement by means of a DC voltage as the control voltage Ue
  • Bridge rectifier 26 as reverse polarity protection.
  • the timing element 12 is designed as an integrating RC element. Starting from a supply line 32 carrying the operating voltage U1, after the operating voltage U1 appears, a charging current flows through the series connection of two charging resistors 34 and 36 to a charging capacitor 38. The voltage at a first connection point 40 of the two charging resistors 34, 36 is determined by a voltage limiting element in Form of a first Z diode 42 limited. The time behavior of the timing element 12 is thus largely independent of the level of the operating voltage U. It is essentially determined by the dimensioning of the RC element formed by the charging resistor 36 and the charging capacitor 38. After switching off the control voltage Ue, the charging capacitor 38 discharges via a discharge resistor 44 and a discharge diode 46 onto the now de-energized supply line 32. The timer 12 is thus ready to be switched on again.
  • the controllable voltage source 14 consists of a threshold circuit evaluating the charging voltage of the charging capacitor 38 and a voltage limiter arrangement coupled to its output.
  • the voltage limiter arrangement consists of a series connection of a first series resistor 48 and a Z-diode row 50 and is arranged between the supply line 32 and the reference potential.
  • the threshold circuit has a third transistor 52 arranged in a source circuit.
  • the charging capacitor 38 is connected to the gate connection of the third transistor 52 via a second Z diode 54.
  • a discharge resistor 56 arranged between the gate connection of the third transistor 52 and reference potential serves to protect the gate electrode.
  • the drain connection of the third transistor 52 is via a load resistor 58 with a second connection point
  • the third transistor 52 is in the blocked or non-conductive state.
  • the pull-in voltage Ua which results from the sum of the Z-voltages of the Z-diode series 50, is present at the second connection point 60. If, at the end of the pull-in phase, the voltage at the charging capacitor 38 exceeds the sum of the Z voltage of the second Z diode 54 and the switching threshold of the gate voltage of the third transistor 52, the latter goes into the controlled or conductive state. In this
  • the resistance value of the series resistor 48 is chosen to be large compared to the resistance value of the load resistor 58.
  • the first switching means 16 consist of a first one connected as a source follower
  • Transistor 62 with a first protection diode 64 to protect the first transistor 62 against negative voltage peaks between its gate and source connection.
  • the output of the first switching means 16 connected to the first connection 18 of the drive coil 4 is identical to the source connection of the first transistor 62 and outputs the holding voltage Ua reduced by the gate-source voltage of the first transistor 62 during the pull-up phase. By lowering the potential the second connection point 60 at the end of the tightening phase, the first transistor 62 is blocked.
  • the DC-DC converter 10 comprises a converter circuit 66 connected on the input side to the supply line 32, smoothing means on the output side and detection means for detecting and regulating the output holding voltage Uh.
  • the smoothing means consist in the usual way of a smoothing choke 68 and a feedback diode 70 at the output of the converter circuit 66 and of a second smoothing capacitor 72 connected downstream of the smoothing choke 68.
  • the holding voltage Uh is applied across the second smoothing capacitor 72 when the control voltage Ue is applied.
  • the detection means consist of a series connection of a third Z-diode 74 arranged in parallel to the second smoothing capacitor 72 with a photodiode 76 and of a phototransistor 78 optically coupled to the photodiode 76.
  • the emitter connection of the phototransistor 78 is connected to the output and with its collector connection to one Control input of the converter circuit 66 out.
  • the holding voltage Uh is thus determined by the sum of the Z voltage of the third Z diode 74 and the forward voltage of the photodiode 76. After the control voltage Ue has been applied, the holding voltage Uh has run up in about 30 ms. After the control voltage Ue has been switched off, the second smoothing capacitor 72 discharges in a short time via the current path formed by the isolating diode 24, the drive coil 4 and the switching path of the second switching means 22.
  • the second switching means 22 contain a second transistor 80 arranged in a source circuit. This is connected on the input side via a second series resistor 82 to the first connection 18 of the drive coil 4 and connected to a second protective diode 84.
  • the second protective diode 84 is designed as a Z-diode and protects the gate connection of the second transistor 80 - in particular during the pick-up phase - against excessive voltages.
  • the drain connection of the second transistor 80 is connected to the second connection 20 of the drive coil 4.
  • the second transistor 80 is designed as a Z-diode and protects the gate connection of the second transistor 80 - in particular during the pick-up phase - against excessive voltages.
  • the drain connection of the second transistor 80 is connected to the second connection 20 of the drive coil 4.
  • a freewheeling means 86 is arranged parallel to the switching path of the second transistor 80, which is designed as a Z diode in the example. Both in the pull-in phase and in the holding phase, the freewheeling means 86 is short-circuited by the controlled switching path of the second transistor 80 and is therefore ineffective. When the second transistor 80 is blocked, the drive coil runs
  • the present invention is not limited to the embodiment described above.
  • the invention can also be carried out with a differentiating timing element, as can be seen, for example, from the publication DE 92 16 041 U1 mentioned at the beginning.

Landscapes

  • Relay Circuits (AREA)
  • Dc-Dc Converters (AREA)
  • Vehicle Body Suspensions (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Valve Device For Special Equipments (AREA)
EP03784086A 2002-08-02 2003-07-26 Ensemble de commande pour entrainement electromagnetique Expired - Lifetime EP1527470B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10235297 2002-08-02
DE10235297A DE10235297B3 (de) 2002-08-02 2002-08-02 Steueranordnung für einen elektromagnetischen Antrieb
PCT/EP2003/008281 WO2004015733A1 (fr) 2002-08-02 2003-07-26 Ensemble de commande pour entrainement electromagnetique

Publications (2)

Publication Number Publication Date
EP1527470A1 true EP1527470A1 (fr) 2005-05-04
EP1527470B1 EP1527470B1 (fr) 2007-12-19

Family

ID=30469343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03784086A Expired - Lifetime EP1527470B1 (fr) 2002-08-02 2003-07-26 Ensemble de commande pour entrainement electromagnetique

Country Status (7)

Country Link
US (1) US7403366B2 (fr)
EP (1) EP1527470B1 (fr)
CN (1) CN100409390C (fr)
AT (1) ATE381771T1 (fr)
DE (2) DE10235297B3 (fr)
ES (1) ES2298602T3 (fr)
WO (1) WO2004015733A1 (fr)

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JP4482913B2 (ja) 2005-04-01 2010-06-16 Ｓｍｃ株式会社 電磁弁及び電磁弁駆動回路
DE102005017568B4 (de) * 2005-04-11 2024-04-25 Alfred Kärcher SE & Co. KG Saugreinigungsgerät
DE102005017702A1 (de) 2005-04-11 2006-10-12 Alfred Kärcher Gmbh & Co. Kg Verfahren zum Abreinigen der Filter eines Staubsaugers sowie Staubsauger zur Durchführung des Verfahrens
ES2321998B1 (es) * 2006-06-30 2010-03-04 Universitat Politecnica De Catalunya Dispositivo electronico para proveer la alimentacion electrica e insensibilizar de las perturbaciones de la red electrica a los electroimanes en general y en especial a los de los contactores electromagneticos.
PL2046182T3 (pl) * 2006-07-29 2014-10-31 Kaercher Gmbh & Co Kg Alfred Odkurzacz z urządzeniem do samooczyszczania filtru
PL2049001T3 (pl) * 2006-07-29 2014-04-30 Kaercher Gmbh & Co Kg Alfred Odkurzacz z urządzeniem do samoczynnego oczyszczania filtra
DE502006007803D1 (de) * 2006-07-29 2010-10-14 Kaercher Gmbh & Co Kg Alfred Verfahren zum abreinigen der filter eines staubsaugers sowie staubsauger zur durchführung des verfahrens
PL2046184T3 (pl) * 2006-07-29 2014-06-30 Kaercher Gmbh & Co Kg Alfred Sposób czyszczenia filtrów odkurzacza oraz odkurzacz do realizacji tego sposobu
DE102006036134A1 (de) * 2006-08-01 2008-02-07 Leopold Kostal Gmbh & Co. Kg Verfahren zur Ansteuerung eines Hubankermagneten in einem Kraftfahrzeug
CN101770844B (zh) * 2009-01-06 2012-01-11 安泰汽车电气系统（昆山）有限公司 电磁线圈驱动电路
WO2010121656A1 (fr) 2009-04-22 2010-10-28 Alfred Kärcher Gmbh & Co. Kg Procédé pour décrasser les deux filtres d'un aspirateur à des fins de nettoyage et aspirateur pour mettre en oeuvre le procédé
DE102009020769A1 (de) 2009-04-30 2010-11-04 Alfred Kärcher Gmbh & Co. Kg Saugreinigungsgerät
ES2709904T3 (es) 2009-07-07 2019-04-22 Kaercher Alfred Se & Co Kg Aparato de aspiración para fines de limpieza
JP5409330B2 (ja) * 2009-12-21 2014-02-05 リンナイ株式会社 電磁弁制御装置
WO2011119669A2 (fr) * 2010-03-23 2011-09-29 A123 Systems, Inc. Système et procédé de commande du contacteur de sortie d'un jeu de batteries
DE102011086957A1 (de) * 2011-11-23 2013-05-23 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils, sowie Computerprogramm und Steuer- und/oder Regeleinrichtung
DE102012223749A1 (de) * 2012-12-19 2014-06-26 Siemens Aktiengesellschaft Elektromagnetisches Schaltschütz
CN105027250B (zh) 2013-01-10 2017-06-30 施耐德电气It公司 用于控制继电器的系统和方法
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CN107408476B (zh) * 2015-03-13 2019-11-29 伊顿电气Ip两合公司 电子调节的接触器的构件减少的快速关断
DE102015119512A1 (de) * 2015-11-12 2017-05-18 Eaton Electrical Ip Gmbh & Co. Kg Verfahren und Vorrichtung zur Steuerung eines elektromagnetischen Antriebs eines Schaltgeräts
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Also Published As

Publication number Publication date
EP1527470B1 (fr) 2007-12-19
DE50308857D1 (de) 2008-01-31
WO2004015733A1 (fr) 2004-02-19
ATE381771T1 (de) 2008-01-15
CN1675727A (zh) 2005-09-28
US20050254270A1 (en) 2005-11-17
DE10235297B3 (de) 2004-02-19
CN100409390C (zh) 2008-08-06
ES2298602T3 (es) 2008-05-16
US7403366B2 (en) 2008-07-22

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