WO2006018700A1 - Method and device for supplying an electric motor with direct current - Google Patents

Method and device for supplying an electric motor with direct current Download PDF

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Publication number
WO2006018700A1
WO2006018700A1 PCT/IB2005/002425 IB2005002425W WO2006018700A1 WO 2006018700 A1 WO2006018700 A1 WO 2006018700A1 IB 2005002425 W IB2005002425 W IB 2005002425W WO 2006018700 A1 WO2006018700 A1 WO 2006018700A1
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WO
WIPO (PCT)
Prior art keywords
rlu
rld
phase conductor
conductor
motor
Prior art date
Application number
PCT/IB2005/002425
Other languages
French (fr)
Inventor
Bernard Grehant
Original Assignee
Somfy 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 Somfy Sas filed Critical Somfy Sas
Publication of WO2006018700A1 publication Critical patent/WO2006018700A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
    • H02P1/22—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor in either direction of rotation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive

Definitions

  • the invention relates to a method of supplying a DC motor powered by a voltage source through two relays. It further relates to a power supply device, an actuator and an installation comprising such a power supply device.
  • DE 22 47 578 discloses a device for controlling the supply of a DC motor comprising a transformer whose primary winding is powered by the mains voltage and a three-position inverter switch connected in parallel with two diodes mounted head to tail.
  • the switch makes it possible to short-circuit one of the diodes and to supply, through the other diode, the motor under a single alternating voltage from the voltage available across the secondary winding of the transformer.
  • a power supply and control device for an electric motor is shown in FIG. 1.
  • a DC voltage source is connected to a phase line LH and to a neutral conductor LN.
  • An inverter switch KUD is connected to the phase line LH and allows, according to its state, to connect the phase line to a first phase conductor UP or to a second phase conductor DN.
  • the power supply and control device comprises a first inverter relay relay allowing, according to its state, to connect a first terminal of the motor with the first phase conductor UP or the neutral conductor LN and a second inverting relay rld allowing, according to its state, to connect the second terminal of the motor to the second phase conductor DN or to the neutral conductor LN.
  • the states of the relay relay are controlled by an RLU coil connected in series with a current limiting resistor RP2 between the first phase conductor UP and the neutral conductor LN.
  • the states of the relay rld are controlled by an RLD coil connected in series with a current limiting resistor RP1 between the second phase conductor DN and the neutral conductor LN.
  • the coil RLU when the phase line LH is connected to the first phase conductor UP, the coil RLU is energized, the relay relay is activated to connect one of the motor terminals to the first phase conductor UP and the motor turns in a first meaning.
  • the RLD coil When the phase line LH is connected to the second phase conductor DN, the RLD coil is energized, the relay rld is activated to connect the other terminal of the motor to the second phase conductor DN and the motor rotates in a second direction.
  • the coil RLU or RLD is supplied throughout the operating phase of the motor by a current whose intensity is at least greater than the intensity of the current for bonding the relay. This supply causes energy dissipation in the coils having thermal consequences in the supply device.
  • the object of the invention is to provide a method and a device for supplying a DC motor that overcomes the aforementioned problem and improves the methods and supply devices known from the prior art.
  • the invention provides a method and a feed device for controlling with a three-position inverting switch supplying a DC electric motor under a full-wave rectified voltage when the supply device is powered by an alternating voltage.
  • the device according to the invention uses relays whose coil is designed to operate with a direct current, these being much cheaper than the relays whose coil is intended to operate with an alternating current and makes it possible to limit the energy losses in the control coils of the relays.
  • the method according to the invention is characterized by the characterizing part of claim 1.
  • the power supply device according to the invention is defined by claim 3.
  • the actuator according to the invention is defined by claim 8.
  • the appended drawing shows, by way of example, two embodiments of the device according to the invention.
  • Figure 1 is a circuit diagram of a device known from the prior art for supplying and controlling a DC motor.
  • Figure 2 is an electrical diagram of an installation comprising a first embodiment of the supply device according to the invention using an AC voltage source.
  • Figure 3 is an electrical diagram of an installation comprising a second embodiment of the supply device according to the invention using a DC voltage source.
  • the installation 1, represented in FIG. 1, comprises an ACT1 actuator mechanically coupled to an SCR screen consisting for example of a closure, concealment or sun protection element or of a projection screen.
  • the screen can include a roller shutter, a blind or a door. Under the action of the actuator, this screen can be moved in two opposite directions.
  • the actuator ACT1 is electrically connected to a control inverter switch KUD. It is electrically powered by an AC voltage source such as the AC 230 V, 50 Hz via the control inverter switch. Indeed, the phase line LH1 of the voltage source is connected to the moving contact of the switch. This contact can be connected to a UP line to activate the actuator in a first direction or a DN line to activate the actuator in a second direction or be kept in the air.
  • the neutral conductor LN of the voltage source is connected to the actuator either directly or via the switch KUD.
  • the actuator ACT1 comprises a DC motor MOT and a power supply device ALIM 1 of this motor from the conductors UP, DN and LN.
  • the motor supply device comprises a three-phase Graetz bridge comprising diodes D11 to D13 and D21 to D23.
  • the three alternative inputs of this bridge are connected to the LN neutral conductor 1 to the first phase conductor UP and the second phase conductor DN.
  • the continuous outputs define a constant supply polarity, conventionally a positive pole (common cathodes) and a negative pole (common anodes).
  • the positive pole is connected to fixed CTU and CTD working contacts of two relays rlu and rld via a first open contact ELU and a second open contact ELD.
  • the CRU and CRD fixed rest contacts of the relays are connected to the negative pole.
  • the CMU and CMD mobile contacts of the relays are respectively connected to the two terminals of the MOT electric motor. Thus, when the two relays are at rest the motor is short-circuited.
  • RLU and RLD coils control the setting in rest and working position of the relay rlu and rld, the rest positions of the relays corresponding to the unpowered states of the coils and the working positions of the relays corresponding to the fed states of the coils.
  • the coil RLU is fed between the first phase conductor UP and the neutral conductor LN in series with a parallel two-branched connection, each branch comprising a current limiting element RP1 or RP2, a diode D1 or D2 and a relay relay. or rld.
  • the RLD coil is energized between the second phase conductor DN and the neutral conductor LN in series with the two-branch mounting parallel, each branch comprising a current limiting element RP1 or RP2, a diode D1 or D2 and a relay rlu or rld.
  • the coils RLU and RLD relays have the same characteristics, and it is the same current limiting elements RP1 and RP2 which consist preferably of resistors.
  • the coils RLU and RLD are intended to be fed by a direct current.
  • Two capacitors C1 and C2 are respectively arranged in parallel on the coils RLD and RLU.
  • FIG. 1 represents the installation in a transient state in which the two relays are in the rest position while the phase line LH1 has just been brought into contact with the phase conductor DN.
  • the coil RLD is supplied in series with the current limiting elements RP1 and RP2, arranged in parallel with respect to each other, the current limiting elements being connected in series with the diodes D1 and D2 and the relays. rld and rlu.
  • the supply of the RLD coil rld relay is then done only through the current limiting element RP1, this current limiting element having an impedance greater than the impedance of the parallel assembly of the two elements of Current limitation RP1 and RP2.
  • the impedances RP1 and RP2 must be at most 6.6 K ⁇ .
  • the assembly thus guarantees perfect sticking of the relay and its maintenance as long as the inverter switch does not change state.
  • the assembly makes it possible to obtain a heat dissipation as low as possible.
  • the assembly can also use, in series with each coil, an avalanche dipole, as realized with a diac or with two transistors mounted in equivalent thyristor, so as to wait for the voltage at the terminals of C1 (respectively C2) has reached a value that is sufficiently greater than the nominal voltage of the relay to make the said dipole conductive.
  • the ELU and ELD contacts are opened when the motor-driven SCR mobile screen reaches the end of the run.
  • the activation of an opening contact is made directly by the movement of the screen, as shown in the figure, or by that of the motor.
  • Opening contacts may be optional. In particular, they can be replaced by a circuit breaker system opening the circuit when an overcurrent is detected (stop detection).
  • This first installation 1 makes it possible to use a single-phase AC voltage source.
  • the source delivers on the phase line LH1 an alternating potential with respect to the neutral conductor LN.
  • the installation 2 shown in FIG. 2 differs from the previously described installation in that it is intended to be powered by a source of DC voltage between a neutral conductor LN and a phase line LH2 carrying a positive potential. compared to the neutral conductor.
  • the actuator ACT2 therefore differs from the actuator described above in that the feed device ALIM 2 does not include a Graetz bridge.
  • the phase conductor UP, respectively the phase conductor DN is directly connected to the contact ELU and to the coil RLU, respectively to the contact ELD and to the coil RLD.
  • This second installation 2 makes it possible to use a source of DC voltage.
  • the source delivers on an LH2 phase line a potential always greater than that of the LN neutral conductor, and substantially constant.
  • the two described installations may comprise several actuators connected in parallel and activated by the same inverter control switch.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Power Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

The method for supplying a motor with direct current from a voltage source via two relays is characterized in that it comprises a first transitory stage wherein the two relays are in a rest position, wherein one of the relay coils is supplied with power and wherein the electric current circulating in said coil is divided into two parallel branches of an electric circuit, wherein each branch comprises a current limiting element and a relay in a rest position. The invention also relates to a device for supplying a direct current motor enabling the above-method to be carried out.

Description

Procédé et dispositif d'alimentation d'un moteur électrique à courant continu. Method and device for supplying a DC electric motor
L'invention concerne un procédé d'alimentation d'un moteur à courant continu alimenté par une source de tension à travers deux relais. Elle concerne de plus un dispositif d'alimentation électrique, un actionneur et une installation comprenant un tel dispositif d'alimentation.The invention relates to a method of supplying a DC motor powered by a voltage source through two relays. It further relates to a power supply device, an actuator and an installation comprising such a power supply device.
On connaît de la demande DE 22 47 578 un dispositif de commande de l'alimentation d'un moteur à courant continu comprenant un transformateur dont l'enroulement primaire est alimenté par la tension secteur et un interrupteur inverseur à trois positions branché en parallèle avec deux diodes montées tête-bêche. L'interrupteur permet de court- circuiter l'une des diodes et d'alimenter, à travers l'autre diode, le moteur sous une tension simple alternance à partir de la tension disponible aux bornes de l'enroulement secondaire du transformateur.DE 22 47 578 discloses a device for controlling the supply of a DC motor comprising a transformer whose primary winding is powered by the mains voltage and a three-position inverter switch connected in parallel with two diodes mounted head to tail. The switch makes it possible to short-circuit one of the diodes and to supply, through the other diode, the motor under a single alternating voltage from the voltage available across the secondary winding of the transformer.
Dans certains cas, il est cependant nécessaire d'alimenter un moteur électrique à courant continu par une tension redressée double alternance et de commander cette alimentation grâce à un interrupteur inverseur à trois positions.In some cases, however, it is necessary to supply a DC electric motor with a full-wave rectified voltage and to control this power supply by means of a three-position inverter switch.
Il est connu d'alimenter un moteur à courant continu grâce à une source de tension continue. Un dispositif d'alimentation et de commande d'un moteur électrique est représenté à la figure 1. Une source de tension continue est reliée à une ligne de phase LH et à un conducteur de neutre LN. Un interrupteur inverseur KUD est connecté à la ligne de phase LH et permet, selon son état, de relier la ligne de phase à un premier conducteur de phase UP ou à un deuxième conducteur de phase DN. Le dispositif d'alimentation et de commande comprend un premier relais inverseur rlu permettant, selon son état, de relier une première borne du moteur au premier conducteur de phase UP ou au conducteur de neutre LN et un deuxième relais inverseur rld permettant, selon son état, de relier la deuxième borne du moteur au deuxième conducteur de phase DN ou au conducteur de neutre LN. Les états du relais rlu sont commandés par une bobine RLU branchée en série avec une résistance de limitation du courant RP2 entre le premier conducteur de phase UP et le conducteur de neutre LN. Les états du relais rld sont commandés par une bobine RLD branchée en série avec une résistance de limitation du courant RP1 entre le deuxième conducteur de phase DN et le conducteur de neutre LN. Ainsi, lorsque la ligne de phase LH est reliée au premier conducteur de phase UP, la bobine RLU est alimentée, le relais rlu est activé pour relier l'une des bornes du moteur au premier conducteur de phase UP et le moteur tourne dans un premier sens. Lorsque la ligne de phase LH est reliée au deuxième conducteur de phase DN, la bobine RLD est alimentée, le relais rld est activé pour relier l'autre borne du moteur au deuxième conducteur de phase DN et le moteur tourne dans un deuxième sens. Un tel montage présente des inconvénients. La bobine RLU ou RLD est alimentée pendant toute la phase de fonctionnement du moteur par un courant dont l'intensité est au moins supérieure à l'intensité du courant permettant le collage du relais. Cette alimentation entraîne des dissipations énergétiques dans les bobines ayant des conséquences thermiques dans le dispositif d'alimentation. De plus, lorsqu'on veut alimenter un moteur électrique grâce à une source de tension alternative, via ce dispositif, il faut prévoir en amont de celui-ci des moyens de redressement de tension.It is known to supply a DC motor with a DC voltage source. A power supply and control device for an electric motor is shown in FIG. 1. A DC voltage source is connected to a phase line LH and to a neutral conductor LN. An inverter switch KUD is connected to the phase line LH and allows, according to its state, to connect the phase line to a first phase conductor UP or to a second phase conductor DN. The power supply and control device comprises a first inverter relay relay allowing, according to its state, to connect a first terminal of the motor with the first phase conductor UP or the neutral conductor LN and a second inverting relay rld allowing, according to its state, to connect the second terminal of the motor to the second phase conductor DN or to the neutral conductor LN. The states of the relay relay are controlled by an RLU coil connected in series with a current limiting resistor RP2 between the first phase conductor UP and the neutral conductor LN. The states of the relay rld are controlled by an RLD coil connected in series with a current limiting resistor RP1 between the second phase conductor DN and the neutral conductor LN. Thus, when the phase line LH is connected to the first phase conductor UP, the coil RLU is energized, the relay relay is activated to connect one of the motor terminals to the first phase conductor UP and the motor turns in a first meaning. When the phase line LH is connected to the second phase conductor DN, the RLD coil is energized, the relay rld is activated to connect the other terminal of the motor to the second phase conductor DN and the motor rotates in a second direction. Such an arrangement has disadvantages. The coil RLU or RLD is supplied throughout the operating phase of the motor by a current whose intensity is at least greater than the intensity of the current for bonding the relay. This supply causes energy dissipation in the coils having thermal consequences in the supply device. In addition, when one wants to power an electric motor through an AC voltage source, via this device, it is necessary to provide upstream thereof voltage recovery means.
Le but de l'invention est de fournir un procédé et un dispositif d'alimentation d'un moteur à courant continu remédiant au problème précité et améliorant les procédés et les dispositifs d'alimentation connus de l'art antérieur. En particulier, l'invention propose un procédé et un dispositif d'alimentation permettant de commander grâce à un interrupteur inverseur à trois positions l'alimentation d'un moteur électrique à courant continu sous une tension redressée double alternance lorsque le dispositif d'alimentation est alimenté par une tension alternative. En outre, le dispositif selon l'invention utilise des relais dont la bobine est prévue pour fonctionner avec un courant continu, ceux-ci étant bien meilleur marché que les relais dont la bobine est prévue pour fonctionner avec un courant alternatif et permet de limiter les pertes énergétiques dans les bobines de commande des relais.The object of the invention is to provide a method and a device for supplying a DC motor that overcomes the aforementioned problem and improves the methods and supply devices known from the prior art. In particular, the invention provides a method and a feed device for controlling with a three-position inverting switch supplying a DC electric motor under a full-wave rectified voltage when the supply device is powered by an alternating voltage. In addition, the device according to the invention uses relays whose coil is designed to operate with a direct current, these being much cheaper than the relays whose coil is intended to operate with an alternating current and makes it possible to limit the energy losses in the control coils of the relays.
Le procédé selon l'invention est caractérisé par la partie caractérisante de la revendication 1.The method according to the invention is characterized by the characterizing part of claim 1.
Une variante d'exécution du procédé est définie par la revendication dépendante 2.An alternative embodiment of the method is defined by dependent claim 2.
Le dispositif d'alimentation électrique selon l'invention est défini par la revendication 3.The power supply device according to the invention is defined by claim 3.
Différents modes de réalisation du dispositif sont définis par les revendications dépendantes 4 à 7.Different embodiments of the device are defined by dependent claims 4 to 7.
L'actionneur selon l'invention est défini par la revendication 8.The actuator according to the invention is defined by claim 8.
L'installation selon l'invention est définie par la revendication 9.The installation according to the invention is defined by claim 9.
Le dessin annexé représente, à titre d'exemples, deux modes de réalisation du dispositif selon l'invention.The appended drawing shows, by way of example, two embodiments of the device according to the invention.
La figure 1 est un schéma électrique d'un dispositif connu de l'art antérieur permettant d'alimenter et de commander un moteur à courant continu. La figure 2 est un schéma électrique d'une installation comprenant un premier mode de réalisation du dispositif d'alimentation selon l'invention utilisant une source de tension alternative.Figure 1 is a circuit diagram of a device known from the prior art for supplying and controlling a DC motor. Figure 2 is an electrical diagram of an installation comprising a first embodiment of the supply device according to the invention using an AC voltage source.
La figure 3 est un schéma électrique d'une installation comprenant un deuxième mode de réalisation du dispositif d'alimentation selon l'invention utilisant une source de tension continue.Figure 3 is an electrical diagram of an installation comprising a second embodiment of the supply device according to the invention using a DC voltage source.
L'installation 1 , représentée à la figure 1 , comprend un actionneur ACT1 couplé mécaniquement à un écran SCR consistant par exemple en un élément de fermeture, d'occultation ou de protection solaire ou en un écran de projection. L'écran peut notamment consister en un volet roulant, en un store ou en une porte. Sous l'action de l'actionneur, cet écran peut être déplacé selon deux sens opposés.The installation 1, represented in FIG. 1, comprises an ACT1 actuator mechanically coupled to an SCR screen consisting for example of a closure, concealment or sun protection element or of a projection screen. The screen can include a roller shutter, a blind or a door. Under the action of the actuator, this screen can be moved in two opposite directions.
L'actionneur ACT1 est relié électriquement à un interrupteur inverseur de commande KUD. Il est alimenté électriquement par une source de tension alternative telle que le réseau alternatif 230 V, 50 Hz via l'interrupteur inverseur de commande. En effet, la ligne de phase LH1 de la source de tension est reliée au contact mobile de l'interrupteur. Ce contact peut être relié à une ligne UP pour activer l'actionneur dans un premier sens ou à une ligne DN pour activer l'actionneur dans un deuxième sens ou être maintenu en l'air. Le conducteur de neutre LN de la source de tension est relié à l'actionneur soit directement soit par l'intermédiaire de l'interrupteur KUD.The actuator ACT1 is electrically connected to a control inverter switch KUD. It is electrically powered by an AC voltage source such as the AC 230 V, 50 Hz via the control inverter switch. Indeed, the phase line LH1 of the voltage source is connected to the moving contact of the switch. This contact can be connected to a UP line to activate the actuator in a first direction or a DN line to activate the actuator in a second direction or be kept in the air. The neutral conductor LN of the voltage source is connected to the actuator either directly or via the switch KUD.
L'actionneur ACT1 comprend un moteur à courant continu MOT et un dispositif d'alimentation ALIM 1 de ce moteur à partir des conducteurs UP, DN et LN. Le dispositif d'alimentation du moteur comprend un pont de Graëtz triphasé comprenant les diodes D11 à D13 et D21 à D23.The actuator ACT1 comprises a DC motor MOT and a power supply device ALIM 1 of this motor from the conductors UP, DN and LN. The motor supply device comprises a three-phase Graetz bridge comprising diodes D11 to D13 and D21 to D23.
Les trois entrées alternatives de ce pont (points de liaison entre anode et cathode des diodes) sont raccordées au conducteur de neutre LN1 au premier conducteur de phase UP et au second conducteur de phase DN. Les sorties continues (cathodes communes des diodes D11 à D13 et anodes communes et D21 à D23) définissent une polarité d'alimentation constante, conventionnellement un pôle positif (cathodes communes) et un pôle négatif (anodes communes). Le pôle positif est raccordé à des contacts fixes de travail CTU et CTD de deux relais rlu et rld par l'intermédiaire d'un premier contact à ouverture ELU et d'un deuxième contact à ouverture ELD. Les contacts fixes de repos CRU et CRD des relais sont quant à eux reliés au pôle négatif. Les contacts mobiles CMU et CMD des relais sont respectivement reliés aux deux bornes du moteur électrique MOT. Ainsi, lorsque les deux relais sont au repos le moteur est court-circuité.The three alternative inputs of this bridge (connection points between anode and cathode diodes) are connected to the LN neutral conductor 1 to the first phase conductor UP and the second phase conductor DN. The continuous outputs (common cathodes of diodes D11 to D13 and common anodes and D21 to D23) define a constant supply polarity, conventionally a positive pole (common cathodes) and a negative pole (common anodes). The positive pole is connected to fixed CTU and CTD working contacts of two relays rlu and rld via a first open contact ELU and a second open contact ELD. The CRU and CRD fixed rest contacts of the relays are connected to the negative pole. The CMU and CMD mobile contacts of the relays are respectively connected to the two terminals of the MOT electric motor. Thus, when the two relays are at rest the motor is short-circuited.
Des bobines RLU et RLD commandent les mises en position de repos et de travail des relais rlu et rld, les positions de repos des relais correspondant aux états non alimentés des bobines et les positions de travail des relais correspondant aux états alimentés des bobines.RLU and RLD coils control the setting in rest and working position of the relay rlu and rld, the rest positions of the relays corresponding to the unpowered states of the coils and the working positions of the relays corresponding to the fed states of the coils.
La bobine RLU est alimentée entre le premier conducteur de phase UP et le conducteur de neutre LN en série avec un montage à deux branches parallèles, chaque branche comprenant un élément de limitation de courant RP1 ou RP2, une diode D1 ou D2 et un relais rlu ou rld.The coil RLU is fed between the first phase conductor UP and the neutral conductor LN in series with a parallel two-branched connection, each branch comprising a current limiting element RP1 or RP2, a diode D1 or D2 and a relay relay. or rld.
La bobine RLD est alimentée entre le deuxième conducteur de phase DN et le conducteur de neutre LN en série avec le montage à deux branches parallèles, chaque branche comprenant un élément de limitation de courant RP1 ou RP2, une diode D1 ou D2 et un relais rlu ou rld.The RLD coil is energized between the second phase conductor DN and the neutral conductor LN in series with the two-branch mounting parallel, each branch comprising a current limiting element RP1 or RP2, a diode D1 or D2 and a relay rlu or rld.
De manière préférée, les bobines RLU et RLD des relais ont les mêmes caractéristiques, et il en est de même des éléments de limitation de courant RP1 et RP2 qui consistent de préférence en des résistances. Les bobines RLU et RLD sont destinées à être alimentées par un courant continu.Preferably, the coils RLU and RLD relays have the same characteristics, and it is the same current limiting elements RP1 and RP2 which consist preferably of resistors. The coils RLU and RLD are intended to be fed by a direct current.
Deux condensateurs C1 et C2 sont respectivement disposés en parallèle sur les bobines RLD et RLU.Two capacitors C1 and C2 are respectively arranged in parallel on the coils RLD and RLU.
La figure 1 représente l'installation dans un état transitoire dans lequel les deux relais sont en position de repos alors qu'on vient de mettre en contact la ligne de phase LH1 avec le conducteur de phase DN.FIG. 1 represents the installation in a transient state in which the two relays are in the rest position while the phase line LH1 has just been brought into contact with the phase conductor DN.
La bobine RLD est alimenté en série avec les éléments de limitation du courant RP1 et RP2, disposés en parallèle l'un par rapport à l'autre, les éléments de limitation du courant étant branchés en série avec les diodes D1 et D2 et les relais rld et rlu.The coil RLD is supplied in series with the current limiting elements RP1 and RP2, arranged in parallel with respect to each other, the current limiting elements being connected in series with the diodes D1 and D2 and the relays. rld and rlu.
Dès que la tension aux bornes du condensateur C1 atteint une valeur suffisante pour permettre le collage du relais, les contacts CTD et CMD du relais rld sont reliés et le moteur est alimenté pour tourner dans le second sens.As soon as the voltage across the capacitor C1 reaches a value sufficient to allow the bonding of the relay, the contacts CTD and CMD of the relay rld are connected and the motor is powered to turn in the second direction.
L'alimentation de la bobine RLD du relais rld ne se fait alors plus qu'au travers de l'élément de limitation du courant RP1 , cet élément de limitation du courant présentant une impédance supérieure à l'impédance du montage parallèle des deux éléments de limitation du courant RP1 et RP2. Comme exemple de dimensionnement du circuit électrique précédemment décrit, on prend des relais 24 volts, 1 KΩ (courant d'alimentation sous 24 volts = 24 mA) et on suppose qu'une tension de maintien de 10 V suffit à maintenir le relais dans sa position de travail, une fois le relais collé (courant de maintien 10 mA).The supply of the RLD coil rld relay is then done only through the current limiting element RP1, this current limiting element having an impedance greater than the impedance of the parallel assembly of the two elements of Current limitation RP1 and RP2. As an example of the dimensioning of the electrical circuit previously described, relays are taken 24 volts, 1 KΩ (supply current under 24 volts = 24 mA) and it is assumed that a holding voltage of 10 V is sufficient to maintain the relay in its working position, once the relay is stuck (holding current 10 mA).
La tension moyenne redressée simple alternance pour Ueff = 230 V vaut 102 V.The average half-wave rectified voltage for Ueff = 230 V is 102 V.
En supposant, les diodes idéales et en prenant : RP1 = RP2 = 2R, l'impédance de limitation du courant dans la phase transitoire de collage est donc égale à R.Assuming the ideal diodes and taking RP1 = RP2 = 2R, the current limiting impedance in the transient phase of bonding is therefore equal to R.
On calcule la valeur de l'impédance R nécessaire pour avoir 24 V aux bornes de RLD dans la phase transitoire de collage. On a alors 102 - 24 = 78 V aux bornes des éléments de limitation du courant. Pour obtenir un courant de 24 mA dans le relais RLD, il faut une résistance R = 3.3 KΩ.The value of the impedance R needed to have 24 V across RLD in the transient phase of bonding is calculated. Then 102 - 24 = 78 V across the current limiting elements. To obtain a current of 24 mA in the RLD relay, a resistance R = 3.3 KΩ is required.
Donc les impédances RP1 et RP2 doivent valoir au maximum 6.6 KΩ.Therefore, the impedances RP1 and RP2 must be at most 6.6 KΩ.
Avec de telles valeurs d'impédance, le courant de maintien est plus élevé que strictement nécessaire : i = 102 / (1 +6.6) = 13.4 mAWith such impedance values, the holding current is higher than strictly necessary: i = 102 / (1 +6.6) = 13.4 mA
Le montage garantit donc un collage parfait du relais, et son maintien tant que l'interrupteur inverseur ne change pas d'état. En limitant le courant dans le relais une fois celui-ci collé, le montage permet d'obtenir une dissipation thermique aussi faible que possible. Pour obtenir une plus grande marge de sécurité, le montage peut aussi utiliser, en série avec chaque bobine, un dipôle à effet d'avalanche, comme réalisé avec un diac ou avec deux transistors montés en équivalent thyristor, de manière à attendre que la tension aux bornes de C1 (respectivement C2) ait atteint une valeur assez supérieure à la tension nominale du relais pour rendre conducteur ledit dipôle.The assembly thus guarantees perfect sticking of the relay and its maintenance as long as the inverter switch does not change state. By limiting the current in the relay once it is glued, the assembly makes it possible to obtain a heat dissipation as low as possible. To obtain a greater margin of safety, the assembly can also use, in series with each coil, an avalanche dipole, as realized with a diac or with two transistors mounted in equivalent thyristor, so as to wait for the voltage at the terminals of C1 (respectively C2) has reached a value that is sufficiently greater than the nominal voltage of the relay to make the said dipole conductive.
Les contacts ELU et ELD sont actionnés en ouverture lorsque le l'écran mobile SCR entraîné par le moteur arrive en fin de course. L'activation d'un contact à ouverture est effectuée directement par le mouvement de l'écran, comme représenté sur la figure, ou par celui du moteur. Les contacts à ouverture peuvent être facultatifs. En particulier, ils peuvent être remplacés par un système disjoncteur ouvrant le circuit quand une surintensité est détectée (détection de butée).The ELU and ELD contacts are opened when the motor-driven SCR mobile screen reaches the end of the run. The activation of an opening contact is made directly by the movement of the screen, as shown in the figure, or by that of the motor. Opening contacts may be optional. In particular, they can be replaced by a circuit breaker system opening the circuit when an overcurrent is detected (stop detection).
Cette première installation 1 permet d'utiliser une source de tension alternative monophasée. La source délivre sur la ligne de phase LH1 un potentiel alternatif par rapport au conducteur de neutre LN.This first installation 1 makes it possible to use a single-phase AC voltage source. The source delivers on the phase line LH1 an alternating potential with respect to the neutral conductor LN.
L'installation 2, représentée à la figure 2, diffère de l'installation précédemment décrite en ce qu'elle est destinée à être alimentée par une source de tension continue entre un conducteur de neutre LN et une ligne de phase LH2 portant un potentiel positif par rapport au conducteur de neutre. L'actionneur ACT2 diffère par conséquent de l'actionneur précédemment décrit en ce que le dispositif d'alimentation ALIM 2 ne comprend pas de pont de Graëtz. Le conducteur de phase UP, respectivement le conducteur de phase DN, est directement relié au contact ELU et à la bobine RLU, respectivement au contact ELD et à la bobine RLD. Cette deuxième installation 2 permet d'utiliser une source de tension continue. La source délivre sur une ligne de phase LH2 un potentiel toujours supérieur à celui du conducteur de neutre LN, et sensiblement constant.The installation 2, shown in FIG. 2, differs from the previously described installation in that it is intended to be powered by a source of DC voltage between a neutral conductor LN and a phase line LH2 carrying a positive potential. compared to the neutral conductor. The actuator ACT2 therefore differs from the actuator described above in that the feed device ALIM 2 does not include a Graetz bridge. The phase conductor UP, respectively the phase conductor DN, is directly connected to the contact ELU and to the coil RLU, respectively to the contact ELD and to the coil RLD. This second installation 2 makes it possible to use a source of DC voltage. The source delivers on an LH2 phase line a potential always greater than that of the LN neutral conductor, and substantially constant.
Une variante, non représentée, de l'installation de la figure 2 consiste à utiliser une ligne de phase portant un potentiel négatif par rapport au conducteur de neutre, et à inverser le sens des diodes D1 et D2.An alternative, not shown, of the installation of Figure 2 is to use a phase line carrying a negative potential with respect to the neutral conductor, and to reverse the direction of diodes D1 and D2.
Les deux installations décrites peuvent comporter plusieurs actionneurs branchés en parallèle et activés par un même interrupteur inverseur de commande. The two described installations may comprise several actuators connected in parallel and activated by the same inverter control switch.

Claims

Revendications : Claims:
1. Procédé d'alimentation d'un moteur à courant continu (MOT) alimenté par une source de tension à travers deux relais (rld, rlu), caractérisé en ce qu'il comprend une première étape transitoire dans laquelle les deux relais (rld, rlu) sont au repos, dans laquelle l'une des bobines (RLU, RLD) d'un relais est alimentée et dans laquelle le courant électrique circulant dans ladite bobine (RLU, RLD) se divise dans deux branches parallèles d'un circuit électrique, chaque branche comprenant un élément (RP1 , RP2) de limitation du courant et un relais (rld, rlu) en position de repos.1. A method of supplying a DC motor (MOT) powered by a voltage source through two relays (rld, rlu), characterized in that it comprises a first transient stage in which the two relays (rld , rlu) are at rest, in which one of the coils (RLU, RLD) of a relay is energized and in which the electric current flowing in said coil (RLU, RLD) is divided into two parallel branches of a circuit electrical, each branch comprising a current limiting element (RP1, RP2) and a relay (rld, rlu) in the rest position.
2. Procédé d'alimentation selon la revendication 1 , caractérisé en ce qu'il comprend une seconde étape dans laquelle l'un des relais (rld, rlu) est dans une position de travail pour alimenter le moteur (MOT), dans laquelle la bobine (RLU, RLD) dudit relais est alimentée et dans laquelle le courant électrique circulant dans ladite bobine (RLU, RLD) circule dans l'un des éléments (RP1 , RP2) de limitation du courant et dans le relais (rld, rlu) se trouvant en position de repos.2. Feeding method according to claim 1, characterized in that it comprises a second step in which one of the relays (rld, rlu) is in a working position to supply the motor (MOT), in which the coil (RLU, RLD) of said relay is energized and wherein the electric current flowing in said coil (RLU, RLD) flows in one of the current limiting elements (RP1, RP2) and in the relay (rld, rlu) in the rest position.
3. Dispositif d'alimentation électrique (ACT1 ; ACT2) d'un moteur (MOT) à courant continu permettant l'entraînement d'un écran (SCR), comprenant un premier conducteur de phase (UP), un deuxième conducteur de phase (DN) et un conducteur de neutre3. Power supply device (ACT1; ACT2) of a DC motor (MOT) for driving a screen (SCR), comprising a first phase conductor (UP), a second phase conductor ( DN) and a neutral conductor
(LN)1 le moteur (MOT) entraînant l'écran (SCR) dans un premier sens de déplacement lorsqu'une tension est appliquée entre le premier conducteur de phase (UP) et le conducteur de neutre (LN) et dans un deuxième sens de déplacement lorsqu'une tension est appliquée entre le deuxième conducteur de phase (DN) et le conducteur de neutre (LN), le dispositif comprenant un premier relais (rlu) à contacts inverseurs muni d'une première bobine (RLU) et un deuxième relais (rld) à contacts inverseurs muni d'une deuxième bobine (RLU), caractérisé en ce que les bobines (RLU, RLD) présentent une borne commune, l'autre borne de la première bobine (RLU) étant reliée au premier conducteur de phase (UP), l'autre borne de la deuxième bobine (RLD) étant reliée au deuxième conducteur de phase (DN) et en ce que la borne commune aux bobines (RLU, RLD) est reliée à une première extrémité de deux éléments de limitation de courant (RP1 , RP2) dont la deuxième extrémité est respectivement reliée à chacune des bornes du moteur (MOT) et aux contacts mobiles (CMU, CMD) des relais.(LN) 1 the motor (MOT) driving the screen (SCR) in a first direction of movement when a voltage is applied between the first phase conductor (UP) and the neutral conductor (LN) and in a second direction when a voltage is applied between the second phase conductor (DN) and the neutral conductor (LN), the device comprising a first relay (rlu) with reversing contacts provided with a first coil (RLU) and a second relay (rld) with reversing contacts provided with a second coil (RLU), characterized in that the coils (RLU, RLD) have a terminal common, the other terminal of the first coil (RLU) being connected to the first phase conductor (UP), the other terminal of the second coil (RLD) being connected to the second phase conductor (DN) and in that the common terminal to the coils (RLU, RLD) is connected to a first end of two current limiting elements (RP1, RP2) whose second end is respectively connected to each of the terminals of the motor (MOT) and to the moving contacts (CMU, CMD) relays.
4. Dispositif d'alimentation électrique selon la revendication 3, caractérisé en ce que les éléments de limitation du courant (RP1 , RP2) comprennent des résistances (RP1 , RP2) et sont montés en série avec des diodes (D1 , D2).4. Power supply device according to claim 3, characterized in that the current limiting elements (RP1, RP2) comprise resistors (RP1, RP2) and are connected in series with diodes (D1, D2).
5. Dispositif d'alimentation électrique selon la revendication 3 ou 4, caractérisé en ce qu'il comprend une source de tension continue , destinée à être branchée entre le premier conducteur de phase5. Power supply device according to claim 3 or 4, characterized in that it comprises a DC voltage source intended to be connected between the first phase conductor.
(UP) et le conducteur de neutre (LN) ou entre le deuxième conducteur de phase (DN) et le conducteur de neutre (LN) et en ce que les contacts fixes de travail (CTU, CTD) des relais sont respectivement reliés au premier conducteur de phase (UP) et au deuxième conducteur de phase (DN).(UP) and the neutral conductor (LN) or between the second phase conductor (DN) and the neutral conductor (LN) and in that the fixed working contacts (CTU, CTD) of the relays are respectively connected to the first phase conductor (UP) and the second phase conductor (DN).
6. Dispositif d'alimentation électrique selon la revendication 3 ou 4, caractérisé en ce qu'il comprend une source de tension alternative destinée à être branchée entre le premier conducteur de phase (UP) et le conducteur de neutre (LN) ou entre le deuxième conducteur de phase (DN) et le conducteur de neutre (LN), en ce qu'il comprend des moyens de redressement (D11 , D12, D13, D21 , D22, D23) de cette tension alternative et en ce que les contacts fixes de travail (CTU, CTD) sont reliés à la sortie de ces moyens de redressement.6. Power supply device according to claim 3 or 4, characterized in that it comprises an AC voltage source intended to be connected between the first phase conductor (UP) and the neutral conductor (LN) or between the second phase conductor (DN) and the neutral conductor (LN), in that it comprises rectification means (D11, D12, D13, D21, D22, D23) of this AC voltage and in that the fixed working contacts (CTU, CTD) are connected to the output of these rectifying means.
7. Dispositif d'alimentation électrique selon l'une des revendications 3 à 6, caractérisé en ce qu'il comprend un interrupteur inverseur (KUD) à trois positions permettant de brancher la source de tension entre le premier conducteur de phase (UP) et le conducteur de neutre (LN) ou entre le deuxième conducteur de phase (DN) et le conducteur de neutre (LN).7. Power supply device according to one of claims 3 to 6, characterized in that it comprises a three-position inverter switch (KUD) for connecting the voltage source between the first phase conductor (UP) and the neutral conductor (LN) or between the second phase conductor (DN) and the neutral conductor (LN).
8. Actionneur (ACT1 ; ACT2) comprenant un dispositif d'alimentation selon l'une des revendications 3 à 7 et un moteur électrique à courant continu (MOT).8. Actuator (ACT1; ACT2) comprising a supply device according to one of claims 3 to 7 and a DC motor (MOT).
9. Installation (1 , 2) comprenant un actionneur (ACT1 ; ACT2) selon la revendication 8 et un écran (SCR) mobile selon deux sens et lié mécaniquement au moteur (MOT). 9. Installation (1, 2) comprising an actuator (ACT1; ACT2) according to claim 8 and a screen (SCR) movable in two directions and mechanically linked to the motor (MOT).
PCT/IB2005/002425 2004-08-19 2005-08-15 Method and device for supplying an electric motor with direct current WO2006018700A1 (en)

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FR0408991A FR2874465B1 (en) 2004-08-19 2004-08-19 METHOD AND DISPOSITION OF SUPPLYING A DC MOTOR FOR CONTINUOUS CURRENT USE FOR DRIVING A ROLLING SHUTTER
FR0408991 2004-08-19

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DK3985221T3 (en) * 2020-10-16 2023-02-13 Comatec Consulting S R L POWER SUPPLY CIRCUIT

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE3011387A1 (en) * 1980-03-25 1981-10-08 Robert Bosch Gmbh, 7000 Stuttgart Motor control circuit for vehicle telescopic aerial - has two branches with common capacitor, ensuring time delay during full erection and retraction
JPS61269691A (en) * 1985-05-23 1986-11-29 Nippon Denso Co Ltd Electric controller for door opening and closing system for vehicle
DE19957805A1 (en) * 1999-12-01 2001-06-28 Tyco Electronics Logistics Ag Electrical switching device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011387A1 (en) * 1980-03-25 1981-10-08 Robert Bosch Gmbh, 7000 Stuttgart Motor control circuit for vehicle telescopic aerial - has two branches with common capacitor, ensuring time delay during full erection and retraction
JPS61269691A (en) * 1985-05-23 1986-11-29 Nippon Denso Co Ltd Electric controller for door opening and closing system for vehicle
DE19957805A1 (en) * 1999-12-01 2001-06-28 Tyco Electronics Logistics Ag Electrical switching device

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Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 122 (E - 500) 16 April 1987 (1987-04-16) *

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