EP2297755B1 - Verfahren zur steuerung eines elektrischen abschaltmotors - Google Patents

Verfahren zur steuerung eines elektrischen abschaltmotors Download PDF

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Publication number
EP2297755B1
EP2297755B1 EP09769476A EP09769476A EP2297755B1 EP 2297755 B1 EP2297755 B1 EP 2297755B1 EP 09769476 A EP09769476 A EP 09769476A EP 09769476 A EP09769476 A EP 09769476A EP 2297755 B1 EP2297755 B1 EP 2297755B1
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EP
European Patent Office
Prior art keywords
motor
control unit
control
microcontroller
static converter
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.)
Not-in-force
Application number
EP09769476A
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English (en)
French (fr)
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EP2297755A1 (de
Inventor
Franck Guillon
Norbert Rozand
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.)
Dauphinoise de Constructions Electro Mecaniques SAS
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Dauphinoise de Constructions Electro Mecaniques SAS
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Publication of EP2297755A1 publication Critical patent/EP2297755A1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H01H2003/266—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts

Definitions

  • the present invention relates to a device for electrical control of the operation of an electrical disconnector. It relates more particularly to the manner in which the various operations relating to the operation of a disconnector, namely on the one hand the power supply of the electric motor, and on the other hand the determination of the direction of rotation of the same motor, are arranged and coordinated. .
  • the direction of movement of the movable elements of the disconnector is fixed by the configuration of the motor supply circuit.
  • a set of appropriate relays makes it possible to reverse the direction of connection of the motor winding with respect to the voltage source supplying the energy required for the operation. More specifically, this reconfiguration of the circuit can be obtained through the use of electromechanical components of the relay type or the like, which are appropriately controlled according to the user requested commands for opening / closing commands.
  • this control device is adapted to ensure that a single motor of nominal voltage determined can be used by being controlled from different types of mains voltage, AC or DC, and separate voltages.
  • the motor supply circuit includes a static converter, to deliver the rated voltage of the motor, regardless of the mains voltage.
  • the static converter can for example operate by a modulation or pulse width mechanism (MLI or PWM).
  • MMI modulation or pulse width mechanism
  • This static converter is controlled by a control unit including a microcontroller delivering appropriate commands on the one hand, the relay system that ensures the configuration of the circuit, and therefore the direction of the current, and secondly, the static converter to deliver the desired voltage.
  • a disconnector is an electrical device that has a power of cutoff almost zero, so it is absolutely essential to prevent opening to charge the disconnector, which would cause degradation of the breaking devices. Similarly, for obvious safety reasons, it is absolutely imperative that the disconnector does not close unexpectedly.
  • control of the static converter via a microcontroller may present a minimal risk of unwanted control of the disconnector, in the case where the microcontroller is in an incoherent operating state.
  • the outputs of the microcontroller for controlling the static converter are in an "active" state, that is to say, allowing the power supply of the motor, and that in addition the electromechanical components of the configuration of the circuit allow the flow of current in the motor, the latter can be powered when it should not be.
  • the microcontroller may have outputs blocked in a specific state, or inconsistent with its programmed operation.
  • the motor is applied the mains voltage directly from the supply network, possibly after recovery if it is an AC voltage network.
  • this voltage is higher than the nominal voltage of the motor, and therefore causes a rise in current beyond the thresholds for triggering protections.
  • the nominal voltage of the motor corresponds to the mains voltage, rectified if necessary, these thermal protections do not trip, and the motor is then energized, causing the unintentional operation of the disconnector.
  • One of the objectives of the invention is to prevent this type of accidental operation, which can cause significant risks in terms of safety.
  • the invention therefore relates to a control device of an electric disconnect motor.
  • This device includes a motor supply circuit from a mains voltage source.
  • This circuit comprises a static converter controlled to apply to the motor a voltage of a predetermined value by means of control commands issued by a main control unit.
  • this device is characterized in that it comprises an additional control unit with which dialogue the main control unit.
  • the control commands of the main control unit are activated according to a validation order from the additional control unit
  • the invention consists in carrying out the control of the static converter supplying the motor with an electronic component (or, in general, a set of components), which does not act alone on the static switch, but requires a confirmation of its functioning by another control unit responsible for validating the correct operation of the main unit.
  • an electronic component or, in general, a set of components
  • the application of orders requires two orders made by separate bodies. The probability is thus extremely low that these two members simultaneously put in incoherent states, in which both the static converter allows the passage of the current and the additional unit verification circuit. valid incoherent orders.
  • the electromechanical configuration components are generally arranged so that in the absence of any control, so in the idle state, the motor is not connected to the voltage source and the static converter.
  • each control unit may consist of a microcontroller, a first microcontroller providing control of the static converter, while the other delivers control validation commands of the static converter confirming the proper operation of the control unit. main.
  • One of the two microcontrollers performs the role of master, the other being in a slave configuration, so that the orders it generates are activated, and therefore applied to the static converter only in the event that the other microcontroller allows it.
  • control commands of the static converter for adjusting the voltage applied to the motor may preferably be a pulse width modulation system (or PWM), so that via a predetermined duty cycle, the voltage applied to the motor corresponds to its rated voltage.
  • PWM pulse width modulation system
  • these MLI commands can be delivered to a static switch whose control circuit has a terminal connected to the main control unit delivering the MLI commands, the other terminal being connected to the additional control unit.
  • the switch can only be closed if both control units are working properly.
  • the static converter is actually controlled by a microcontroller when the other microcontroller authorizes it.
  • the two microcontrollers exchange signals, according to a predetermined protocol, so as to receive and confirm the validation orders.
  • the validation commands are inoperative, and the static converter is not controlled.
  • control of the static converter is carried out by the master microcontroller, which also acts on the electromechanical circuit configuration components, and in particular the components whose actuation makes it possible to fix the direction of the current circulating in the engine.
  • the control unit receiving the validation command is advantageous for the control unit receiving the validation command to be supplied only during the phases in which this validation command is issued.
  • the slave microcontroller of the main unit is powered only during the phases where it must issue commands to the components it controls.
  • the static converter receives commands from the slave microcontroller, the latter is powered only in the phases where the motor must actually be activated.
  • the two microcontrollers in order to limit the risks of simultaneous malfunction of the two microcontrollers, it is preferable that they each have a clock independent of the other controller, and advantageously operating according to different technologies of the quartz type or to RC cell, for example.
  • control commands of the static converter and the commands for the circuit configuration components can be developed by the same control unit, typically the same microcontroller.
  • the "master" microcontroller provides all the management of the operation of the disconnector, including the determination of the direction of the motor current and the development of the appropriate MLI commands.
  • the slave microcontroller communicates with the master microcontroller, and issues the validation command, when it is able to detect that the master microcontroller is indeed in normal operating mode.
  • This second microcontroller thus plays the role of a locking key to ensure the consistency of orders issued by the main microcontroller.
  • the motor (1) of the disconnector is powered by a circuit (2) connected to a network voltage source (3) which, in the form shown, is an AC voltage source.
  • the circuit (2) thus comprises from connections (4, 5) to the reciprocating network, a set of fuses (6, 7), connected to a rectifier (8) in the form of a bridge of diodes delivering a substantially constant voltage across a capacitor (9) .
  • a voltage chopper assembly Downstream of the capacitor (9) is a voltage chopper assembly, comprising a power converter (10) incorporating a static switch (11), for example of the IGBT type, in series with the motor (1), as well as a freewheeling diode (15).
  • the motor is short-circuited. Furthermore, when the contact of the relay (17) is controlled by the signal (37) to change position, the motor is connected to the voltage source so that the current (1) passing through it is positive. Conversely, when it is the contact of the relay (18) which changes position, on an order (38), the current (I) which runs through the motor is negative.
  • the two relays (17, 18) are actuated via the microcontroller (40), which receives the opening (31) or closing (32) commands from the control panel, or more general of the disconnector maneuver management system.
  • the microcontroller (40) also elaborates the duty cycle and the control commands PWM that must be applied to the static converter (10) to obtain the desired voltage across the motor terminals. (1).
  • the static converter control (10) is carried out via two microcontrollers (30, 40).
  • the static switch (11) is shown associated with an optoelectronic component (12).
  • Other components or assemblies can schematically, of course, be used in an equivalent manner.
  • the cathode (41) of the optoelectronic component (12) is connected to the additional control unit (30) while the anode (42) is connected to the main control unit (40).
  • the two microcontrollers (30, 40) function correctly and in a concerted manner to ensure the correct control of the static switch (11).
  • the two microcontrollers (30, 40) are connected by a wire link (45) so that they can communicate according to a specific protocol.
  • the dialogue protocol can be varied according to the level of security that one wishes to implement. In an improved form, it may be preferable that the dialogue is performed in an encrypted manner, that is to say with an exchange of a code on a large number of bits, for example 32 bits.
  • the power supply of the additional microcontroller (30) can be performed and controlled via the main microcontroller (40) which, when necessary, transmits a signal (50) to a component (51). ) providing power to the additional microcontroller (30).
  • This type of assembly makes it possible, for example, to use microcontrollers which have distinct supply voltages.
  • the main microcontroller (40) When the main microcontroller (40) receives an open or close command (31, 32), it controls the supply of the additional microcontroller (30) via the signal (50). When the additional microcontroller (30) is operational, it communicates via the wire link (45) with the main microcontroller (40).
  • the output (35) of the monitoring microcontroller is put in a state that allows the grounding of the cathode (41) of the control component (12) of the static switch (11).
  • the main microcontroller (40) controls the direction relay (17, 18) to set the direction of the current flowing through the motor. Then, after a delay, the main microcontroller (30) supplies the anode of the component (12) via the transistor (43) PWM control commands to ensure the switching of the static switch (11).
  • the main microcontroller (40) becomes uncontrollable, and keeps its output (49) in a high state
  • the dialogue with the additional microcontroller (30) shows this malfunction.
  • the output (35) of the additional microcontroller (30) goes into a state such that the cathode (41) of the electronic component (12) is disconnected from the ground, thus preventing the control of the static switch (11). .
  • the additional microcontroller (30) begins to operate in an anarchic mode, and for example leaves its output (35) in an active state, that is to say, connecting the cathode (41) of the component optoelectronic (12) to the ground, the dialogue between the two microcontrollers can not run properly, and the main microcontroller (40) then interrupts the control of the static switch leaving its output (49) in a low state inactive.
  • the main microcontroller (40) interrupts the issuance of MLI commands, then stops the control of the direction relay (17, 18), and finally cuts off the power of the monitoring microcontroller (30).
  • control device has the advantage of ensuring extreme reliability with respect to the control of the disconnector motor, and this, by a mutual control of the two microcontrollers assuring the control of the static converter.

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Claims (9)

  1. Steuervorrichtung für einen Motor (1) eines elektrischen Trennschalters, einen Versorgungsschaltkreis (2) des Motors (1) aus einer Netzspannungsquelle (3) umfassend, wobei der schaltkreis einen statischen Umrichter (10) umfaßt, der gesteuert wird, um an den Motor (1) mittels Steuerbefehlen, die von einer Hauptsteuereinheit (40) erteilt werden, eine Spannung mit einem vorbestimmten Wert anzulegen, dadurch gekennzeichnet, dass sie eine zusätzliche Steuereinheit (30) umfasst, mit der die Hauptsteuereinheit (40) in Dialog steht, wobei die Steuerbefehle der Hauptsteuereinheit (40) in Abhängigkeit von einem von der zusätzlichen Steuereinheit (30) ausgegebenen Freigabebefehl aktiviert werden.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jede Steuereinheit einen Mikrocontroller (30, 40) umfasst.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der statische Umrichter (10) durch Putsbreitenmodutationsbefehle gesteuert wird.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Pulsbreitenmodulationsbefehle einem statischen Unterbrecher (10) erteilt werden, dessen Steuerschaltkreis einen Anschluss, der an die Steuereinheit (40) angeschlossen ist, die die Pulsbreitenmodulationsbefehle erteilt, und einen weiteren Anschluss besitzt, der an die zusätzliche Steuereinheit (30) angeschlossen ist.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die zusätzliche Steuereinheit (30) nur während der Phasen versorgt wird, für die der Freigabebefehl ausgegeben ist.
  6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Steuereinheiten (30, 40) jeweils einen eigenen Takt besitzen.
  7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Steuereinheiten (30, 40) in Dialog stehen, um den Freigabebefehl zu empfangen und zu bestätigen.
  8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, der Dialog zwischen den beiden Steuereinheiten verschlüsselt erfolgt.
  9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie eine oder mehrere Konfigurationskomponente/n umfasst, deren Betätigung die Konfiguration (17, 18) des Versorgungsschaltkreises des Motors im Hinblick darauf erlaubt, die Richtung des im Motor (1) fließenden Stroms (i) festzulegen, und wobei die für die Konfigurationskomponenten (17, 18) 18) bestimmten Befehle durch die Steuereinheit (40) verarbeitet werden, die die Steuerbefehle des statischen Umrichters (10) verarbeitet.
EP09769476A 2008-06-03 2009-05-25 Verfahren zur steuerung eines elektrischen abschaltmotors Not-in-force EP2297755B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0853660A FR2931995B1 (fr) 2008-06-03 2008-06-03 Dispositif de commande d'un moteur de sectionneur electrique
PCT/FR2009/050964 WO2009156635A1 (fr) 2008-06-03 2009-05-25 Dispositif de commande d'un moteur de sectionneur electrique

Publications (2)

Publication Number Publication Date
EP2297755A1 EP2297755A1 (de) 2011-03-23
EP2297755B1 true EP2297755B1 (de) 2012-03-07

Family

ID=40193742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09769476A Not-in-force EP2297755B1 (de) 2008-06-03 2009-05-25 Verfahren zur steuerung eines elektrischen abschaltmotors

Country Status (7)

Country Link
US (1) US20110095710A1 (de)
EP (1) EP2297755B1 (de)
CN (1) CN102047361B (de)
AT (1) ATE548743T1 (de)
ES (1) ES2383139T3 (de)
FR (1) FR2931995B1 (de)
WO (1) WO2009156635A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2963858B1 (fr) 2010-08-11 2012-08-17 Dauphinoise Const Elect Mec Dispositif et procede de controle d'une manoeuvre d'un organe mobile d'un sectionneur
FR2971883B1 (fr) 2011-02-23 2013-02-22 Dauphinoise Const Elect Mec Dispositif et procede de controle d'un signal de commande destine a un sectionneur
CN104157477B (zh) * 2014-08-27 2016-06-08 西安华鑫电力设备有限责任公司 一种电动机操作机构
DE102019112713A1 (de) * 2019-05-15 2020-11-19 Maschinenfabrik Reinhausen Gmbh Schalteranordnung und verfahren zum sicheren betrieb einer schalteranordnung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7053570B2 (en) * 2003-12-01 2006-05-30 Eaton Corporation Control circuit for a dual directional direct current motor employing a single alternating current power source
US7424641B2 (en) * 2005-04-06 2008-09-09 Delphi Technologies, Inc. Control system and method for validating operation of the control system
US7279865B2 (en) * 2005-09-20 2007-10-09 Rockwell Automation Technologies, Inc. Method and apparatus for monitoring motor status using induced motor voltage
CN2879383Y (zh) * 2006-04-04 2007-03-14 遵义长征电器开关设备有限责任公司 高压开关柜接地开关电动机构
FR2904469B1 (fr) * 2006-07-28 2008-10-17 Dauphinoise Const Elect Mec Dispositif de commande electronique d'un sectionneur

Also Published As

Publication number Publication date
CN102047361A (zh) 2011-05-04
EP2297755A1 (de) 2011-03-23
FR2931995B1 (fr) 2010-05-28
CN102047361B (zh) 2013-12-25
ES2383139T3 (es) 2012-06-18
ATE548743T1 (de) 2012-03-15
FR2931995A1 (fr) 2009-12-04
US20110095710A1 (en) 2011-04-28
WO2009156635A1 (fr) 2009-12-30

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