EP1820258B1 - Verfahren zur speisung eines betriebsmotors eines rolladen und einrichtung für einen angetriebenen rolladen - Google Patents

Verfahren zur speisung eines betriebsmotors eines rolladen und einrichtung für einen angetriebenen rolladen Download PDF

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Publication number
EP1820258B1
EP1820258B1 EP05812272A EP05812272A EP1820258B1 EP 1820258 B1 EP1820258 B1 EP 1820258B1 EP 05812272 A EP05812272 A EP 05812272A EP 05812272 A EP05812272 A EP 05812272A EP 1820258 B1 EP1820258 B1 EP 1820258B1
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EP
European Patent Office
Prior art keywords
motor
movable element
voltage
torque
speed
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EP05812272A
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English (en)
French (fr)
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EP1820258A1 (de
Inventor
Serge Bruno
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Somfy SA
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Somfy SA
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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/43—Motors
    • E05Y2201/434—Electromotors; Details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/30—Electronic control of motors
    • E05Y2400/302—Electronic control of motors during electric motor braking
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/30—Electronic control of motors
    • E05Y2400/31—Force or torque control
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Definitions

  • the invention relates to a method for supplying an AC electric motor used to operate a mobile closure, concealment, sun protection or screen element in a building. It also relates to an actuator and an installation implementing such a method.
  • actuators intended to be installed in buildings and intended for the maneuvering of closing elements, occultation, sunscreen or screen include an induction motor (or asynchronous motor) single-phase permanent capacitor.
  • actuators are powered by the alternating network, for example 230 V 50 Hz. They are provided with an immobilizing brake ensuring the locking of the actuator when the engine is not powered. This brake is preferably activated by the magnetic flux of the motor stator.
  • the intensity of the load that must cause the motor varies significantly during the movement of the element.
  • the motor force to be applied when the abutment reaches the element is small compared to the effort required to drive the element in other parts of the race.
  • Patent is known FR 2,814,298 , a device for operating a mobile element of the building comprising a DC motor and in which, when the element arrives near a stop, its speed is reduced in order to avoid significant stresses on the kinematic chain when from arrival to stop.
  • This device requires a DC motor and position sensors to determine when the speed of the element needs to be reduced.
  • Patent is known EP 0 671 542 , a device for operating a movable element of the building comprising an AC motor and in which, when the element arrives close to a stop, a capacitor is placed in series on the power supply phase of the motor so as to to limit the supply voltage.
  • the speed reduction detection is ensured by applying the voltage across the permanent capacitor to a means supplying a relay.
  • This device requires the use of an electro-brake supplied independently of the capacitor. Indeed, the fact of under-energizing the motor causes the release of the immobilizing brake.
  • an electro-brake is a device significantly more expensive than a brake directly activated by the stator flow of the motor. This device also requires the presence of a position sensor determining the position of the movable element in which the power supply phase under reduced voltage is engaged.
  • Utility model is known DE 200 02 225 , a power supply device for a permanent capacitor induction motor, in which two triacs are used to perform the functions of control switches for raising or lowering a mobile element in a building.
  • Patent is known DE 43 07 096 , a power supply device of an induction motor comprising two triacs each mounted in series with a motor winding. Controlling the states of these two triacs makes it possible to dispense with a starting capacitor or a permanent capacitor.
  • Patent is known US 4,422,030 , a device for supplying an induction motor making it possible, with the aid of a triac, to power an engine first at full voltage during its start-up phase, and then supply it with reduced voltage.
  • Patent is known US 6,777,902 , a device for supplying an induction motor for driving a garage door. Depending on whether the motor drives up or down the garage door, the motor is powered to provide a different power, the capacitance capacitance value of phase shift between its windings being changed.
  • the switches for connecting the capacitive means of different values between the windings of the motor can be made by triacs.
  • Requirement EP 1 349 028 discloses a device for operating a roller shutter using an asynchronous motor. When the shutter approaches an end of stroke, the engine is driven at reduced torque. This control can be achieved by limiting the supply voltage.
  • Requirement EP 0 808 986 describes a garage door operating device in which a three-phase motor is controlled to provide a variable torque depending on the load it must cause.
  • the windings of the motor are wired in a triangle and a switch S1 is provided in a branch of the triangle. This switch is open to operate the motor at reduced torque.
  • Requirement DE 39 33 266 discloses a reduced torque supply method of the motor driving a movable element throughout a downward phase of this movable element.
  • This power supply is intended to substantially maintain the equality of descent and climb speeds.
  • this document does not specify how to concretely achieve the torque limitation, in the case of an asynchronous motor, otherwise by action on the amplitude of the voltage. Taking action the amplitude of the wave suggests the use of a complex AC-to-AC converter, equivalent to a variable-ratio transformer, or (more likely) the use of a triac whose starting angle is greater than or greater than 90 °.
  • the object of the invention is to provide a method of supplying an AC motor driving a mobile element overcomes the aforementioned drawbacks and having improvements over the known methods of the prior art.
  • the feeding method according to the invention relates to an asynchronous motor, makes it possible to reduce the stresses on the mobile element and on its drive kinematic chain when it reaches the end of the race without a variation of speed of the element is noticeable by the user and allows the activation of a brake using the magnetic flux produced by the stator of the induction motor. It makes it possible to maintain a sufficient safety margin to prevent the motor from operating in an area in which its torque decreases with the absolute value of the difference between the rotor speed and the synchronism speed.
  • the invention also relates to an actuator for implementing the method having these advantages.
  • the feeding method according to the invention is defined by claim 1.
  • the actuator according to the invention is defined by claim 14.
  • the plant according to the invention is defined by claim 18.
  • the attached drawing shows, by way of example, an embodiment of an actuator according to the invention and an embodiment of the feeding method according to the invention.
  • the figure 1 is a diagram of an embodiment of an actuator according to the invention.
  • the figure 2 is a graph representing the characteristic curves of the variations of the torque of an engine as a function of its speed of rotation.
  • the figure 3 is a flow chart of an embodiment of the feeding method according to the invention.
  • ACT actuator shown schematically at the figure 1 allows to drive a mobile element LD closing, occultation or sunscreen equipping a building.
  • This element can be moved in two opposite directions by rotation of an induction motor MOT in a first direction of rotation and in a second direction of rotation.
  • the actuator is powered by the power distribution network between an AC-H phase conductor and an AC-N neutral conductor.
  • the movable element may for example be a roller shutter comprising an apron 2 consisting of blades, rollable on a winding tube 1 and having a lower end 3 movable between an upper extreme position 5 and a lower extreme position 4.
  • MOT motor is asynchronous type, single phase, permanent phase shift capacitor CM. It comprises two windings W1 and W2. According to the desired direction of rotation, the capacitor CM is arranged in series with the first winding W1 or with the second winding W2. P1 and P2 denote the connection points of the capacitor CM with each of the windings W1 and W2. The other two ends of the windings are connected to a point N1, itself connected to the neutral conductor AC-N via a triac TRC.
  • a BRK immobilisation brake is associated with the MOT motor which blocks the rotor in the absence of current in the windings. As shown by dotted lines, the brake is magnetically coupled to each of the windings.
  • the motor rotor MOT rotates, it drives a gearbox GER, whose output stage drives a shaft constituting the mechanical output of the actuator. It should be noted that the connection between this output shaft and the mobile element LD is not necessarily rigid.
  • connection between the phase conductor AC-H and the windings W1 and W2 of the motor are effected by means of two switches rl1 and rl2 controlled by an electronic control circuit MCU which comprises various means ensuring the control of the actuator. that is to say means for receiving and interpreting orders received, actuator supply means and means for cutting off this supply either in order or when a stop is detected.
  • the two switches rI1 and rI2 have a common connection, connected to the phase conductor to a phase terminal P0 of the actuator. The other connections of the switches are respectively connected to the connection points P1 and P2.
  • the control of the controlled switches results from control commands transmitted by radio frequencies.
  • the electronic control circuit MCU comprises a CPU processing logic unit, such as a microcontroller.
  • This circuit includes a PSU supply circuit, typically a step-down converter, an input of which is connected to the phase terminal P0 and whose other input is connected to the neutral terminal N0 and constitutes the GND electric ground of the electronic control circuit.
  • the DC output voltage VCC of the power supply circuit supplies the CPU processing logic unit and, not shown, a radio frequency receiver REC.
  • This radio frequency receiver REC comprises an RF input connected to an antenna ANT, and two logic outputs UP and DN respectively connected to two logic inputs I1 and I2 of the CPU processing logic unit.
  • the radio frequency receiver interprets the received radio signal to generate, if necessary a high logic state on the first output UP or a high logic state on the second output DN, depending on whether the received signal conveys a climb order or a descent order.
  • an activation of the first input I1 causes a command to close the controlled switch rI1 while an activation of the second input I2 causes a command to close the controlled switch rI2.
  • a second state of the allocation table housed in the memory of the logic processing unit causes the opposite effect, the activation of the first input I1 causing an order of closure of the controlled switch rl2 while the activation of the second input I2 causes an order to close the switch rl1.
  • the logic processing unit comprises a first output O1 supplying a first relay coil RL1 and a second output O2 supplying a second relay coil RL2. These coils act respectively on a first relay contact constituting the switch rI1 and on a second relay contact constituting the switch rI2.
  • the MOT motor turns in either direction.
  • This arrangement allows the logic processing unit to cause the motor to stop even in the presence of a movement command given by the inverter switch. It also allows to invert if necessary the relationship between each position of the inverter switch and each motor phase, depending on the state of the allocation table. This arrangement is useful when it can not predict in advance which direction of rotation of the motor corresponds to the rise (inversely to the descent) once the product installed.
  • relays are usable, for example triacs or transistors.
  • the electronic control circuit MCU comprises a torque control unit TCU which receives a voltage UCM from two diodes D1 and D2 whose anodes are respectively connected to terminals P1 and P2 of the motor.
  • This torque control module is also connected to the electrical ground constituted by the common terminal GND.
  • the voltage UCM is therefore referenced with respect to this common terminal GND, and it is found that, as soon as one of the controlled switches rI1 or rI2 is closed, the voltage UCM corresponds to the amplitude of the voltage across the terminals of the capacitor CM.
  • the torque control unit TCU which is optionally supplied under the voltage VCC by the PSU supply circuit, outputs an OVL torque overload signal connected to an input I3 of the CPU processing logic unit.
  • the third input I3 is of the logic type and the torque control device TCU is converted to the state logic high its OVL overload output if the torque exceeds a predetermined value and / or if the measured torque variation exceeds a predetermined value in a given time interval.
  • the torque control device TCU measures, as previously seen, a signal UCM which corresponds to the voltage across the terminals of the permanent capacitor CM.
  • UCM the voltage across the terminals of the permanent capacitor CM.
  • the torque control device TCU can deliver an analog voltage to the OVL overload output and the third input I3 of the CPU processing logic unit is of analog type. The processing of the study of the variations of this analog quantity is then carried out in the CPU processing logic unit.
  • the torque control device TCU can furthermore pass a sub-charge output TL in the high state if the amplitude of the voltage at the terminals of the capacitor passes above a given threshold. which translates that the torque has fallen below a given threshold value.
  • the underload output TL is connected to a fourth input 14 of the logic processing unit.
  • the logic processing unit includes a third output 03 connected to the control input GCI of a triac control circuit SCU, whose control output GCO is connected to the trigger of the triac TRC.
  • the control circuit is also connected to the GND electrical ground and to the neutral conductor, which enables it to be informed of the times at which the network voltage is canceled and to use this information to generate a control signal for the transmission. state of the triac.
  • the circuit contains, if necessary, electrical insulation IB between input and output, this insulation being intrinsically achieved if an opto-triac is used.
  • the control circuit supplies on the control output GCO control pulses making the triac conductor immediately after the mains voltage is canceled.
  • the motor is powered at nominal voltage with the entire sine wave of the mains voltage.
  • the control circuit delivers the control pulses of the state of the triac with a delay with respect to the times when the mains voltage is canceled.
  • this delay is less than a quarter period (ie 90 ° angularly expressed) of the mains voltage. This delay makes it possible to reduce the effective power supply voltage of the motor, and consequently the maximum torque generated by the latter, while maintaining a sufficient magnetic attraction for the immobilizing brake BRK and while keeping at the terminals of the permanent capacitor a substantially sinusoidal voltage, usable for the measurement of MOT motor torque and / or speed variations.
  • the rms value of the reduced voltage is preferably less than 75% of the rms value of the rated voltage. Rather than apply a same delay on the positive half-waves and the negative alternations of the mains voltage, it is possible to reduce the voltage only on the alternations of the same sign, so as to keep a full wave on the other half-waves, which disturbs the circuit less torque measuring device and / or the locking brake. For example, the delay is applied only to negative half-waves. One can also apply a delay less than a quarter of a period on the positive half-waves and a delay greater than a quarter of a period on the negative half-waves.
  • the third output 03 can directly output the triac trigger control signals if the CPU processing logic receives on another input a synchronization signal with the mains voltage. This choice is the most economical. It also makes it possible to use the triac to cause the motor to stop, rather than to open the controlled switches rI1 or rI2. Thus, the contacts of these switches can have a low breaking capacity.
  • the figure 2 represents the torque-speed characteristic curves of an asynchronous motor powered under two voltages U1 and U2 of different rms values and the operating points of this motor according to the loads it must cause.
  • the curve TM-U1 represents, as a function of the rotational speed of the motor, the value of the torque generated by the motor supplied at rated voltage U1.
  • the curve TM-U2 represents, as a function of the speed of rotation of the motor, the value of the torque generated by the motor supplied under the reduced voltage U2.
  • the horizontal axis of the speeds corresponds to a null torque.
  • the line TL1 represents the intensity of the maximum load to which the motor is subjected during a driving cycle of the movable element between the two high and low stops (under normal operating conditions).
  • the line TL2 represents a predetermined intensity of the load to which the motor is subjected at certain points of the travel of the movable element.
  • the line TL3 represents the intensity of the minimum load to which the motor is subjected during a driving cycle of the movable element between the two high and low stops (under normal operating conditions).
  • the motor torque TM is zero when the rotor rotates at the same speed as the rotating field generated by the alternating currents flowing in the motor windings.
  • this synchronism speed NS is referred to as this speed value and by sliding the relative difference between the rotor speed NR and the synchronism speed NS.
  • the maximum torque that can be supplied by the motor is proportional to the square of the rms value of the supply voltage.
  • a maximum torque MAX2 under reduced voltage U2 two times lower than the maximum engine torque MAX1 obtained at rated voltage U1.
  • the effective values of the supply voltages U1 and U2 have a ratio equal to ⁇ 2. This ratio between the nominal voltage and the reduced voltage can be obtained by delaying the triac control pulses of 90 ° with respect to times when the mains voltage is zero.
  • the nominal operating point P1 corresponds to the application of the maximum load TL1 when the motor is supplied with nominal voltage U1. Under these conditions, the rotational speed of the motor rotor is NRR, which is subsequently designated as a nominal speed value. Nominal slip is the slip at this point. In the applications covered by the invention, the nominal slip is typically 10% or even 20%, which is substantially higher than the slips usually tolerated in industrial applications where three-phase induction motors are used.
  • the feeding method according to the invention aims to power under reduced voltage the motor in the phases where the nominal power of the actuator is not necessary in order to avoid too much stress on the kinematic chain connecting the moving element to the motor.
  • the passage of a power supply of the motor under nominal voltage to a power supply under reduced voltage is only possible in a power supply phase of the motor if, in spite of this power supply under reduced voltage, the motor speed decreases. not in this phase (under normal operating conditions) below the rated speed NRR.
  • the absolute value of the slip must not exceed the value of the nominal slip, which means that, when the load is driving, the rotor speed becomes greater than the synchronism speed NS but must remain below a maximum speed value.
  • the passage of a supply of the motor under nominal voltage to a power supply of the motor under reduced voltage causes an imperceptible variation of speed, which does not risk disturbing the user in the case where the passage takes place while the element is still far from the end stops and especially if the reduced voltage crossing point n ' is not located in a fixed and repetitive manner.
  • the method according to the invention is particularly advantageous if the actuator does not include a position sensor of the motor shaft or if it is intended to equip an installation not comprising a position sensor of the movable element.
  • the fact that the absolute value of the slip does not exceed the nominal slip value also makes it possible to ensure that the motor operates in an area in which its torque increases with the absolute value of the difference existing between the speed of the rotor and the synchronism speed.
  • the motor is powered under reduced voltage U2.
  • This switching of the power supply from the nominal voltage to the reduced voltage can for example be made as soon as the engine torque drops below the torque threshold TL2.
  • Such switching causes a displacement of the operating point of the motor from the point P2 to the point P4 as shown in FIG. figure 2 .
  • the condition to be met under driven load is that it generates a TL2 resistant torque lower than that corresponding to the nominal speed NRR on the reduced-voltage characteristic curve TM-U2.
  • This condition can be established by learning, or be predetermined in an equivalent manner for example by setting a time relative to the total running time between the low and high stops.
  • a user exerts an action on a motion control command transmitter to control a movement of the movable member.
  • a test step 40 it is determined whether a stop is reached by the movable element or if a stop command is given. If this is not the case, the method loops on step 30.
  • the detection of a stop is for example performed by analyzing the torque and / or torque variations.
  • the crossing of a threshold value by the engine torque can be detected by crossing a threshold predetermined by this voltage. If the voltage directly at the terminals of the capacitor CM is used directly, the crossing of a threshold value by the motor torque is detected by the crossing of a threshold value by this voltage, this voltage increasing when the torque decreases. .
  • the torque control device TCU determines and indicates, on the underload output TL, when the torque value has fallen below a predetermined torque value or acquired by learning.
  • the particular value of the counter can also be determined more simply from a learning maneuver between the two end positions.
  • the particular value is calculated automatically as a fraction of the contents of the counter corresponding to the total stroke, using a predetermined coefficient.
  • the particular value can finally be determined by a particular action of the installer on the control means at the time when he believes that the shutter passes through a position where it remains to be traveled a small fraction of the race.
  • the manufacturer indicates for example on the installation instructions a percentage of stroke for which it is known that the torque falls below the threshold TL2.
  • the logic processing unit when switching from a full conduction mode to a reduced conduction mode, the logic processing unit does not take into account the signal delivered by the OVL overload output, so as not to cause a shutdown. untimely at this moment.
  • the invention has been described in the case of an actuator controlled remotely by radio. It is clear that the antenna can be replaced by a coupling on the phase conductor for transmission of orders by line carrier currents.
  • the person skilled in the art can without difficulty use the invention in the case of a so-called wired control, that is to say for which the actuator has two phase terminals, the order being determined by the fact of connecting one or the other of these phase terminals to the AC-H phase conductor of the network, for example by means of a manual inverter with two contact positions and a neutral position.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Control Of Ac Motors In General (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Crushing And Grinding (AREA)

Claims (18)

  1. Verfahren zur Speisung eines Wechselstrom-Elektromotors (MOT), der zur Betätigung eines beweglichen Elements (LD) zum Verschliessen, zum Abdunkeln, zum Sonnenschutz oder als Abschirmung an einem Gebäude dient, und zwar unter Zwischenschaltung eines Reduziergetriebes (GER), das je nachdem, ob das bewegliche Element den Motor antreibt oder von ihm angetrieben wird, einen wesentlich unterschiedlichen Wirkungsgrad zeigt, wobei das bewegliche Element (LD) einen unteren Endbereich (3) aufweist, dessen Ortsveränderungen zwischen einer unteren Endstellung (4) und einer oberen Endstellung (5) von Rotationsbewegungen des Motors (MOT) verursacht werden, wobei der Elektromotor in bestimmten Phasen mit verminderter Spannung gespeist wird und der Absolutwert des Schlupfs des Motors, der die relative Geschwindigkeitsverminderung gegenüber einer Geschwindigkeit mit Nullmoment misst, unter dem Absolutwert des Schlupfs des Motors bleibt, wenn dessen Rotor mit Nenndrehzahl rotiert, und, soweit das bewegliche Element zum Verschliessen kein Hindernis antrifft, die Nenndrehzahl als diejenige Drehzahl des Motorrotors definiert ist, bei welcher der Motor mit Nennspannung gespeist wird und das bewegliche Element eine Maximalbelastung ausübt.
  2. Verfahren zur Speisung nach Anspruch 1, dadurch gekennzeichnet, dass der Motor (MOT) mit verminderter Spannung gespeist wird, um Verschiebungsbewegungen des unteren Endbereichs (3) des beweglichen Elementes in Richtung der unteren Endstellung (4) hervorzurufen.
  3. Verfahren zur Speisung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Motor (MOT) mit Nennspannung gespeist wird, um die Verschiebungsbewegungen des unteren Endbereichs (3) des beweglichen Elements (LD) in Richtung der oberen Endstellung (5) zu bewirken, solange eine bestimmte Bedingung nicht erfüllt ist, und dass der Motor (MOT) mit verminderter Spannung gespeist wird, um die Verschiebungsbewegungen des unteren Endbereiches (3) des beweglichen Elements (LD) in Richtung der oberen Endstellung zu bewirken, wenn die bestimmte Bedingung erfüllt ist.
  4. Verfahren zur Speisung nach Anspruch 3, dadurch gekennzeichnet, dass die bestimmte Bedingung das Unterschreiten eines Schwellenwertes des Motormomentes ist.
  5. Verfahren zur Speisung nach Anspruch 3, dadurch gekennzeichnet, dass die bestimmte Bedingung voreingestellt wird, indem eine relative Dauer in Bezug auf die gesamte Betriebsdauer zwischen den beiden Endstellungen festgelegt wird.
  6. Verfahren zur Speisung nach Anspruch 3, dadurch gekennzeichnet, dass die besondere Bedingung im Verlaufe einer Lernphase aufgestellt wird.
  7. Verfahren zur Speisung nach Anspruch 6, dadurch gekennzeichnet, dass die besondere Bedingung durch einen bestimmten Wert definiert wird, der als ein Teil des Inhalts eines Zählers berechnet wird, welcher dem gesamten Verschiebungsweg entspricht, wobei ein vorbestimmter Koeffizient angewandt wird.
  8. Verfahren zur Speisung nach Anspruch 6, dadurch gekennzeichnet, dass die besondere Bedingung durch eine bestimmte Einwirkung auf die Steuermittel festgelegt wird, wenn das bewegliche Element eine Position durchläuft, an der nur noch ein kleiner Anteil des gesamten Verschiebungsweges durchlaufen werden muss.
  9. Verfahren zur Speisung nach Anspruch 7, dadurch gekennzeichnet, dass ein Wert eines Positionszählers in einem Speicher festgehalten wird, wenn das Motormoment den Schwellenwert im Verlaufe einer Bewegung zwischen den Endstellungen der Verschiebung überschreitet.
  10. Verfahren zur Speisung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die bestimmte Bedingung die Ankunft des unteren Endbereiches des Elementes an einer Position ist, die durch eine Betriebsdauer des Motors definiert ist, ausgehend von einer der Endstellungen dieses Endbereiches.
  11. Verfahren zur Speisung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Speisung des Motors (MOT) über einen Triac (TRC) verwirklicht wird, dessen Schaltzustand von einer Steuervorrichtung (SCU) gesteuert wird, welche elektrische Impulse mit einer Frequenz erzeugt, die das Doppelte der Frequenz der Speisespannung beträgt, wobei diese Impulse bei einer Speisung des Motors unter Nennspannung im wesentlichen in denjenigen Augenblicken erzeugt werden, an denen die Speisespannung ihren Nulldurchgang hat, und wobei die Impulse bei einem Betrieb des Motors unter verminderter Spannung im wesentlichen nach den Zeitpunkten erzeugt werden, an denen die Speisespannung ihren Nulldurchgang hat.
  12. Verfahren zur Speisung nach Anspruch 11, dadurch gekennzeichnet, dass zur Speisung des Motors mit verminderter Spannung die elektrischen Steuerimpulse, welche von der Steuervorrichtung (SCU) erzeugt werden, gegenüber denjenigen Zeitpunkten verzögert sind, bei denen die Speisespannung den Nulldurchgang hat, wobei diese Verzögerung unterschiedlich ist, je nachdem, ob der Wert der Speisespannung positiv oder negativ ist.
  13. Verfahren zur Speisung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Effektivwert der verminderten Spannung niedriger als 75% des Effektivwertes der Nennspannung ist.
  14. Antriebsvorrichtung (ACT) mit einem Wechselstrommotor (MOT), der zur Betätigung eines beweglichen Elements (LD) zum Verschliessen, zum Abdunkeln, zum Sonnenschutz oder als Abschirmung an einem Gebäude dient, und zwar unter Zwischenschaltung eines Reduziergetriebes (GER), das je nachdem, ob das bewegliche Element den Motor antreibt oder von ihm angetrieben wird, einen wesentlichen unterschiedlichen Wirkungsgrad besitzt, wobei der Motor von einer Wechselspannungsquelle über einen Triac (TRC) gespeist wird, dadurch gekennzeichnet, dass die Antriebsvorrichtung Hardware (TCU, CPU, SCU) und Software zur Ausführung des Verfahrens nach einem der vorstehenden Ansprüche aufweist.
  15. Antriebsvorrichtung nach Anspruch 14, dadurch gekennzeichnet, dass der Wechselstrommotor (MOT) ein 1-Phasen-Induktionsmotor mit zwei Wicklungen (W1, W2) und einem Dauerkondensator (CM) ist.
  16. Antriebsvorrichtung nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass das Reduziergetriebe (GER) einen Wirkungsgrad von mehr als 70% liefert, wenn das bewegliche Element vom Motor angetrieben wird, und einen solchen unterhalb 60%, wenn das bewegliche Element den Motor antreibt.
  17. Antriebsvorrichtung nach einem der Ansprüche 14 bis 16, dadurch gekennzeichnet, dass das Reduziergetriebe (GER) beim Antrieb des beweglichen Elements durch den Motor einen Wirkungsgrad aufweist, der mindestens 15% über demjenigen Wirkungsgrad liegt, bei dem das bewegliche Element den Motor antreibt.
  18. Anlage mit einer Antriebsvorrichtung (ACT) nach einem der Ansprüche 14 bis 17 zum Bewegen eines beweglichen Elements (LD), dadurch gekennzeichnet, dass der Absolutwert des grössten Moments, welches vom beweglichen Element auf den Motor ausgeübt wird, wenn dieser das bewegliche Element antreibt, mindestens doppelt so gross wie der Absolutwert des höchsten Moments ist, welches das bewegliche Element auf den Motor ausübt, wenn dieser vom beweglichen Element angetrieben wird.
EP05812272A 2004-12-07 2005-12-06 Verfahren zur speisung eines betriebsmotors eines rolladen und einrichtung für einen angetriebenen rolladen Active EP1820258B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0413016A FR2879047B1 (fr) 2004-12-07 2004-12-07 Procede d'alimentation d'un moteur de manoeuvre d'un volet roulant et dispositif de volet roulant motorise
PCT/IB2005/003679 WO2006061691A1 (fr) 2004-12-07 2005-12-06 Procede d'alimentation d'un moteur de manoeuvre d'un volet roulant et dispositif de volet roulant motorise

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EP1820258A1 EP1820258A1 (de) 2007-08-22
EP1820258B1 true EP1820258B1 (de) 2008-05-07

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EP (1) EP1820258B1 (de)
JP (1) JP2008523777A (de)
CN (1) CN101073199B (de)
AT (1) ATE394827T1 (de)
DE (1) DE602005006615D1 (de)
ES (1) ES2307218T3 (de)
FR (1) FR2879047B1 (de)
WO (1) WO2006061691A1 (de)

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ITTV20080004A1 (it) * 2008-01-10 2009-07-11 Nice Spa Azionamento per avvolgibili con protezione contro vento eccessivo
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WO2006061691A1 (fr) 2006-06-15
CN101073199B (zh) 2010-11-03
CN101073199A (zh) 2007-11-14
EP1820258A1 (de) 2007-08-22
JP2008523777A (ja) 2008-07-03
US7746015B2 (en) 2010-06-29
ES2307218T3 (es) 2008-11-16
ATE394827T1 (de) 2008-05-15
FR2879047A1 (fr) 2006-06-09
WO2006061691B1 (fr) 2006-08-03
FR2879047B1 (fr) 2007-09-14
US20080191658A1 (en) 2008-08-14
DE602005006615D1 (de) 2008-06-19

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