EP1394097B1 - Unite de commande pour tapis roulant de transport de personnes, et tapis roulant de transport de personnes - Google Patents

Unite de commande pour tapis roulant de transport de personnes, et tapis roulant de transport de personnes Download PDF

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Publication number
EP1394097B1
EP1394097B1 EP01941256.8A EP01941256A EP1394097B1 EP 1394097 B1 EP1394097 B1 EP 1394097B1 EP 01941256 A EP01941256 A EP 01941256A EP 1394097 B1 EP1394097 B1 EP 1394097B1
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EP
European Patent Office
Prior art keywords
passenger conveyor
speed operation
utility power
low
conversion device
Prior art date
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EP01941256.8A
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German (de)
English (en)
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EP1394097A4 (fr
EP1394097A1 (fr
Inventor
Akio Iwata
Katumi Hirasawa
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of EP1394097A4 publication Critical patent/EP1394097A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B25/00—Control of escalators or moving walkways

Definitions

  • the present invention relates to a controller for use with passenger conveyors, such as variable-speed escalators or moving sidewalks, as well as to a passenger conveyor.
  • a three-phase AC current of given frequency supplied for utility power is converted to a voltage-variable, frequency-variable three-phase AC current by means of a conversion device, and the thus-converted three-phase AC current is supplied to the motor. More specifically, a three-phase AC current which is lower in frequency than utility power is output, thereby driving the motor at low speed. The frequency is gradually increased by means of the conversion device. When the frequency of the three-phase AC current becomes close to the frequency of utility power, the motor is connected to utility power and driven at high speed.
  • some of the related-art passenger conveyor controllers are provided with a synchronism detector.
  • a three-phase AC current output from the conversion device is brought into synchronism with a three-phase AC current of utility power, and the connection between the electric motor and the conversion device switches to the connection between the electric motor and utility power.
  • the synchronous detector has a complicated structure and is expensive.
  • the present invention has been conceived to solve the foregoing drawbacks and is aimed at providing a passenger conveyor controller and a passenger conveyor which are less costly and highly reliable and which can reduce switching shock or noise without use of a synchronism detector.
  • a drive motor connected to a conversion device connected to utility power is disconnected from the conversion device. Subsequently, the motor is connected directly to the utility power while a residual voltage of the motor is lowered. Further, even when switching from high-speed operation to low-speed operation is effected, the drive motor connected directly to the utility power is disconnected from the utility power. Subsequently, the motor is connected to the foregoing conversion device while the residual voltage of the motor remains in a low state. As a result, there can be achieved switching action between low-speed operation and high-speed operation without involvement of switching shock or noise, by means of a low cost configuration.
  • the present invention relates to the foregoing improved passenger conveyor controller, wherein a drive motor is disconnected from a conversion device when switching from low- speed operation to high- speed operation is effected. After a given period of time, the drive motor is connected to utility power. Further, at the time of switching being effected from high-speed operation to low-speed operation, a drive motor is disconnected from utility power. After a given period of time, the drive motor is connected to the conversion device.
  • the present invention relates to the foregoing improved passenger conveyor controller equipped with a residual voltage sensor for sensing a residual voltage of the drive motor.
  • the drive motor When switching from low-speed operation to high-speed operation is effected, the drive motor is disconnected from the conversion device. After detection that the residual voltage has dropped to or below a certain value, the drive motor is connected to utility power. Further, when switching from high-speed operation to low-speed operation is effected, the drive motor is disconnected from utility power. After detection that the residual voltage has dropped to or below a certain value, the drive motor is connected to the conversion device.
  • the present invention relates to the foregoing improved passenger conveyor equipped with a load device for reducing a residual voltage of the drive motor. After the motor has been disconnected from the conversion device or utility power, the motor is connected to the load device. As a result, the residual voltage of the drive motor can be reduced actively, thereby shortening a switching time and lessening switching shock.
  • the present invention relates to the foregoing improved passenger conveyor, when operation is switched from low-speed operation to high-speed operation, one of a plurality of drive motors connected to a conversion device connected to utility power is disconnected from the conversion device. Subsequently, while a residual voltage of the motor has dropped, all of the motors are connected directly to the utility power. Further, even at the time of switching of operation from high-speed operation to low-speed operation, all of the drive motors connected directly to utility power are disconnected from the utility power. Subsequently, while the residual voltages of the motors have dropped, some of the motors are connected to the conversion device. As a result, the residual voltages of the motors can be diminished quickly, thereby lessening switching shock.
  • the present invention relates to the foregoing improved passenger conveyor controller, wherein some of drive motors are disconnected from the conversion device at the time of switching of operation from low-speed operation to high-speed operation. After a given period of time, all the motors are connected to utility power. Further, all the motors are disconnected from the utility power when operation is switched from high-speed operation to low- speed operation. After a given period of time, some of the motors are connected to the conversion device. As a result, the residual voltages of the motors can be diminished quickly, thereby lessening switching shock.
  • the present invention relates to the foregoing improved passenger conveyor controller equipped with a residual voltage sensor for sensing residual voltages of drive motors.
  • a residual voltage sensor for sensing residual voltages of drive motors.
  • the present invention relates to the foregoing improved passenger conveyor controller equipped with a load device for reducing residual voltages of a plurality of drive motors. After some or all of the motors have been disconnected from the conversion device or utility power, the motor is connected to the load device. As a result, the residual voltages of the motors can be diminished actively, and hence shortening of a switching time and reduction of switching shock can be effected.
  • the present invention relates to the foregoing improved passenger conveyor controller equipped with a passenger sensor for sensing presence/absence of users of the conveyor.
  • the passenger conveyor is switched from low- speed operation to high-speed operation. If no users are detected, the passenger conveyor is switched from high- speed operation to low-speed operation.
  • changing of speed of the passenger conveyor can be effected in accordance with presence/absence of users with a high level of reliability and by means of a low cost configuration.
  • the present invention relates to a passenger conveyor equipped with the foregoing passenger conveyor controller. As a result, switching of operation between high-speed operation and low-speed operation can be effected without involvement of switching shock or noise.
  • Fig. 1 is a schematic diagram of amotor circuit of the passenger conveyor controller according to the first embodiment.
  • Figs. 2 and 3 are schematic diagrams of a control circuit.
  • Figs. 4 and 5 are illustrations showing voltage waveforms appearing at the time of power supply switching.
  • R, S, and T denote three-phase utility power; and + and - denote DC control power sources.
  • Reference numeral 1 designates a variable-voltage, variable-frequency device (hereinafter referred to as a "VVVF device") for converting three-phase AC currents, for the three-phase utility power R, S, and T, to a three-phase voltage-variable, frequency-variable AC current.
  • the VVVF device 1 has a converter 1A for converting a three-phase AC current into a DC current; a smoothing capacitor 1B connected to an output terminal of the converter 1A; and an inverter 1C which is connected to the smoothing capacitor 1B and converts the DC current to a three-phase AC current.
  • Reference numeral 2 designates an induction motor (a drive motor) for driving a passenger conveyor connected to the AC-side of the inverter 1C.
  • Reference numeral 16 designates an electromagnetic contactor for the VVVF device (hereinafter referred to as a "VVVF device contactor”); 16a through 16d designate normally-open contact points of the contactor 16; 16e designates a normally-closed contact point of the same; 17 designates an electromagnetic contactor for a power supply (hereinafter referred to as a "power supply contactor”); 17a through 17c designate normally-open contact points of the same; and 17d designates a normally-closed contact point of the same.
  • the VVVF device 1 converts an AC current of the utility power R, S, T into an AC current having a frequency lower than that of the utility power R, S, T, thereby driving the motor 2 by way of the contact points 16a through 16c, the contact points 6a through 6c, and the contact points 7a through 7c.
  • a low-speed circuit is closed (or turned on), thus constituting a closed circuit.
  • the frequency of the AC current is gradually increased.
  • the contact points 16a through 16c are opened, thus temporarily disconnecting the motor 2 from the VVVF device 1.
  • the low-speed circuit is opened (turned off), thereby constituting an open circuit.
  • the contact points 17a through 17c are closed only after a residual voltage remaining in the motor 2 has diminished.
  • the motor 2 is connected directly to the AC power supply R, S, T, thereby switching to high-speed operation. In short, the high-speed circuit is closed, thereby constituting a closed circuit.
  • an ascending operation for the passenger conveyor from low speed to high speed is performed in the following manner.
  • the ascending contactor 6 When the start-up switch 5 is turned to an ascending side, the ascending contactor 6 is energized by way of a path of +, 3, 4, 5, 7e, 6, and -. The contact points 6a through 6d are closed, and the contact point 6e is opened. The operation relay 8 is energized as a result of closing of the contact point 6d, thereby closing the contact points 8a and 8b. If the speed changeover switch 9 remains in a low-speed position at this time, the low-speed relay 10 is energized by way of a path of +, 8a, 9, 10, and -. As a result of closing of the contact point 10a, the low-speed relay 10 is self-held. Further, the contact point 10b is also closed, so that the contact points 10d through 10f are opened. The timed contact point 10c is closed after lapse of a given period of time.
  • the VVVF device activation relay 14 is energized by way of a path of +, 8b, 10b, 15b, 14, -, thereby closing the contact point 14a and opening the contact point 14b.
  • the VVVF device contactor 16 is energized by way of a path of +, 8b, 14a, 13c, 17d, 16, -, thereby closing the contact points 16a through 16d and opening the contact point 16e. Since the contact point 10c and the contact point 16d are closed, a low-speed start-up instruction is output, and the VVVF device 1 is activated.
  • the output frequency rises to a low frequency as compared with that of the utility power R, S, T.
  • an electromagnetic brake (not shown) is released, and the motor 2 starts low-speed ascending operation.
  • the high-speed relay 11 When the speed changeover switch 9 is turned to a high-speed position, the high-speed relay 11 is energized along a path of +, 8a, 9, 11, -, thereby closing the contact points 11a through 11d and opening the contact point 11e. As a result of opening of the contact point 11e, the low-speed relay 10 is de-energized, thereby opening the contact points 10a through 10c and closing the contact points 10d through 10f. As a result, the high-speed relay 11 is self-held. As a result of closing of the contact point 11b, the VVVF device activation relay 14 is held in an energized state.
  • the timed contact point 10c is opened, and the timed contact point 11d is closed, thereby outputting a high-speed operation instruction.
  • the output frequency of the VVVF device 1 is increased toward a frequency equal to that of the utility power R, S, T, thereby accelerating the motor 2.
  • the contact point 12 is closed.
  • the power frequency detection relay 13 is energized, and the contact point 13a is closed.
  • the contact point 13b and the timed contact point 13c are opened. Since, the contact point 10b has already been opened, the VVVF device activation relay 14 is de-energized as a result of opening of the contact point 13b.
  • the contact point 14a is opened, and the contact point 14b is closed.
  • the VVVF device connection contactor 16 is de-energized, thereby opening the contact points 16a through 16d and closing the contact point 16e.
  • the switching time setting relay 15 is energized along a path of+, 8b, 13a, 11c, 10e, 14b, 15, -. After lapse of a predetermined period of time, the timed contact point 15a is closed.
  • the power supply contactor 17 is energized along a path of +, 8b, 15a, 16e, 17, -, thereby closing the contact points 17a through 17c and opening the contact point 17d.
  • the VVVF device 1 accelerates the motor 2 up to a level equal to the frequency of utility power R, S, T.
  • the motor 2 is temporarily disconnected from the VVVF device 1, thus performing idle running. Subsequently, the motor 2 is connected to the utility power R, S, T, thus performing a high-speed operation.
  • Figs. 4 and 5 show waveforms of voltages developing when switching between the VVVF device contactor 16 and the power supply contactor 17 is effected. It is assumed that a phase difference between the waveform of a voltage V1 of the utility power R, S, T and the waveform of a voltage V2 applied to the motor 2 is maximum at this time.
  • the motor 2 After completion of the switching time T2, the motor 2 is connected to the utility power R, S, T, thereby entering a normal operation time T3.
  • a switching operation involving low switching shock can be achieved, as indicated by A, without involving occurrence of synchronism between an output from the VVVF device 1 and an output from the utility power R, S, T.
  • the reason for this is that, as a result of idle running of the motor 2, a residual voltage V3 lowers, thereby lessening switching shock.
  • the switching time assumes a value of about 0. 7 second, thereby diminishing attenuation of speed of the passenger conveyor.
  • a descending operation for the passenger conveyor from a high- speed operation to a low- speed operation is performed in the following manner.
  • the contact point 15b is closed.
  • the VVVF device activation relay 14 is energized, and the contact point 14a is closed.
  • the contact point 10f is opened by means of energization of the low-speed relay 10.
  • the timed contact 13c is closed.
  • the VVVF device contactor 16 is energized by way of a path of +, 8b, 14a, 13c, 17d, 16, -.
  • the motor 2 is then connected to the VVVF device 1. More specifically, the motor 2 is temporarily disconnected from the utility power R, S, T, thus performing idle running. Subsequently, the motor 2 is connected to the VVVF device 1.
  • the motor 2 is connected to the VVVF device 1 after the residual voltage of the motor 2 has dropped. Hence, switching shock can be lessened.
  • the timed contact 11d is opened after lapse of a given period of time following de-energizing of the high-speed relay 11.
  • the timed contact 10c is closed.
  • the output frequency of the VVVF device 1 shifts from the frequency of the utility power R, S, T to a lower set frequency, and the motor 2 is decelerated.
  • Fig. 6 describes a passenger conveyor controller according to a second embodiment of the present invention.
  • Fig. 6 is a control circuit diagram showing the passenger conveyor controller according to the second embodiment.
  • Figs. 1 , 2 , 4, and 5 are employed also in connection with the second embodiment.
  • the operation of the passenger conveyor according to the present embodiment performed when switching from high-speed operation to low-speed operation is effected will now be described.
  • the motor 2 is connected to the utility power R, S, T and performing a high-speed ascending operation and that the speed changeover switch 9 remains in a low-speed position
  • the low-speed relay 10 is energized, and the high-speed relay 11 is de-energized, as has been described in connection with the first embodiment. Since the contact point 11f is opened, the power contactor 17 is de-energized. Further, the contact point 14a remains opened, and hence the VVVF device contactor 16 is also de-energized, and the motor 2 performs an idle running operation. Further, the contact points 16h and 17h remain closed, and the residual voltage detector 21 starts detecting a residual voltage.
  • the residual voltage drops .
  • the contact point 21a is closed.
  • the residual voltage detection relay 22 is energized, and the contact points 22a through 22d are closed.
  • the VVVF device activation relay 14 is energized, thereby closing the contact point 14a.
  • the VVVF device contactor 16 is then energized, thereby switching the motor 2 to the VVVF device 1.
  • the residual voltage detection relay 22 is held.
  • the motor 2 is temporarily disconnected from the utility power R, S, T and performs idle running. Subsequently, the motor 2 is connected to the VVVF device 1. After lapse of a given period of time following de-energizing of the high-speed relay 11, the timed contact point 11d is opened. If the timed contact point 10c is closed after lapse of a given period of time following energizing of the low-speed relay 10, the output frequency of the VVVF device 1 shifts from the frequency of utility power R, S, T to a lower set frequency, thereby decelerating the motor 2.
  • Fig. 7 is a power circuit diagram of the passenger conveyor controller according to the third embodiment
  • Fig. 8 is a control circuit diagram
  • Fig. 9 is a chart showing a waveform of a voltage arising at the time of switching of power.
  • Fig. 2 is also employed for the third embodiment.
  • the passenger conveyor according to the present embodiment is identical with those shown in Figs. 1 and
  • the operation of the passenger conveyor according to the third embodiment will now be described.
  • the passenger conveyor of the present embodiment differs from the previously-described passenger conveyors only in switching operation. Only the difference will now be described.
  • the contact point 10b is closed during low- speed operation.
  • the speed changeover switch 9 shown in Fig. 2 is turned to the high-speed position in this state, the high-speed relay 11 is energized, as mentioned previously.
  • the contact point 11b is closed, and hence the VVVF device activation relay 14 is held in an energized state.
  • the output frequency of the VVVF device 1 increases so as to become equal to that of the utility power R, S, T, thus accelerating the motor 2.
  • the power supply frequency detection relay 13 When the output frequency has become equal to that of the utility power R, S, T, the power supply frequency detection relay 13 is energized, and the contact point 13a is closed. Further, the timed contact point 13c is opened. As a result of opening of the timed contact point 13c, the VVVF device contactor 16 is de-energized, so that the motor 2 is disconnected from the VVVF device 1 and performs idle running. Further, as a result of closing of the contact point 13a, the switching time setting relay 15 is energized, thereby closing the contact point 15c (the contact point 14c remains open at this time). Accordingly, the load connection contactor 23 is energized by way of a path of +, 8b, 15c, 16i, 17i, 24a, 23, -, and the contact points 23a through 23c are closed.
  • the disconnection time setting relay 24 is energized. After lapse of a predetermined period of time, the timed contact point 24a is opened. Hence, the load connection contactor 23 is de-energized, thereby opening the contact points 23a through 23c. Then, the load device 25 is disconnected from the motor 2. As a result of energizing of the switching time setting relay 15, the timed contact point 15a is closed after lapse of a predetermined period of time. Hence, the power contactor 17 is energized, thereby closing the contact points 17a through 17c.
  • the motor 2 is accelerated by the VVVF device 1 up to the frequency of the utility power R, S, T and is temporarily disconnected from the VVVF device 1, thus performing idle running. Further, the motor 2 is connected to the load device 25 and later connected to the utility power R, S, T, thereby performing idle running.
  • Fig. 9 shows a waveform of the voltage appearing when switching between the VVVF device contactor 16 and the power supply contactor 17 is effected.
  • the load device 25 is disconnected after expiration of time limit of the disconnection time setting relay 24.
  • the load device 25 may be disconnected by use of the previously-described residual voltage detector 21 when a residual voltage has dropped to and below a predetermined value.
  • Fig. 10 is a power circuit diagram of a passenger conveyor controller according to the fourth embodiment.
  • Fig. 11 is a control circuit diagram.
  • Figs. 2 and 9 can be employed also in connection with the fourth embodiment.
  • the passenger conveyor is identical with those shown in Figs. 1 and 8 .
  • a passenger conveyor having a plurality of motors 2 and 2A is controlled.
  • the present embodiment is analogous to the third embodiment, and hence the primary point of the present embodiment will be described.
  • the load connection contactor 23 is energized, because the contact points 11g and 13f are closed. Then, the contact points 23a through 23c are closed, thereby connecting the motor 2 to the induction motor 2A.
  • the contact point 23d is closed, the contact point 16e remains closed.
  • the power supply contactor 17 is energized, and the motors 2 and 2A are connected to the utility power R, S, T. Since the load connection contactor 23 remains energized, the motors 2 and 2A drive the passenger conveyor at high speed.
  • the waveform of a voltage developing at the time of switching action is as illustrated in Fig. 9 .
  • the motor 2 being connected to the induction motor 2A, the residual voltage of the motor 2 diminishes quickly, thereby lessening switching shock.
  • the speed of the passenger conveyor is switched by means of the manual speed changeover switch 9.
  • speed may be changed automatically.
  • the passenger conveyor may be provided with a passenger sensor (not shown) for sensing the presence or absence of a user. If no use is detected, the VVVF device 1 produces an AC current having a frequency lower than that of the utility power R, S, T, thereby operating the motor 2 at low speed. If a user is detected in this state, the frequency of the AC current is gradually increased. When the frequency of the AC current has become close to that of the utility power R, S, T, the motor 2 is connected to the utility power R, S, T, thereby operating the motor 2 at high speed.
  • the VVVF device 1 In contrast, if no user is detected during high-speed operation, the VVVF device 1 produces an AC current having the same frequency as that of the utility power R, S, T. After having been disconnected from the utility power R, S, T, the motor 2 is connected to the VVVF device 1, thereby operating the motor 2 at low speed.
  • the switching means described in connection with the foregoing embodiments can be applied to switching between the high-speed and low-speed operations.
  • circuits constituted of relays and contact points.
  • the circuit can be embodied in a computer program.
  • the present invention is not limited to the above-described embodiments and that the embodiments are susceptible to modifications other than those implied in the respective embodiments, as required.
  • the numbers, positions, and geometries of the constituent members are not limited to those described in connection with the embodiments. There may be employed a preferred number of constituent elements disposed at preferred positions, or preferred shapes of may be employed. Throughout the drawings, the same constituent elements are assigned the same reference numerals.
  • the passenger conveyor controller of the present invention when switching from low-speed operation to high-speed operation is effected, a drive motor connected to a conversion device connected to utility power is disconnected from the conversion device. Subsequently, the motor is connected directly to the utility power while a residual voltage of the motor is lowered. Further, even when switching from high-speed operation to low-speed operation is effected, the drive motor connected directly to the utility power is disconnected from the utility power. Subsequently, the motor is connected to the foregoing conversion device while the residual voltage of the motor remains in a low state.
  • the present invention is applicable to a passenger conveyor controller which can achieve switching action between low-speed operation and high-speed operation without involvement of switching shock or noise, by means of a low cost configuration.
  • the present invention relates to the passenger conveyor controller, wherein a drive motor is disconnected from a conversion device when switching from low-speed operation to high-speed operation is effected. After a given period of time, the drive motor is connected to utility power. Further, at the time of switching being effected from high-speed operation to low-speed operation, a drive motor is disconnected from utility power. After a given period of time, the drive motor is connected to the conversion device.
  • the present invention is applicable to a passenger conveyor controller which can achieve switching between low-speed operation and high-speed operation without involvement of switching shock or noise and by means of a low-cost configuration.
  • the present invention relates to the passenger conveyor controller equipped with a residual voltage sensor for sensing a residual voltage of the drive motor.
  • the drive motor When switching from low- speed operation to high- speed operation is effected, the drive motor is disconnected from the conversion device. After detection that the residual voltage has dropped to or below a certain value, the drive motor is connected to utility power. Further, when switching from high-speed operation to low- speed operation is effected, the drive motor is disconnected from utility power. After detection that the residual voltage has dropped to or below a certain value, the drive motor is connected to the conversion device.
  • the present invention is applicable to a passenger conveyor controller which can achieve switching between low-speed operation and high-speed operation without involvement of switching shock or noise and by means of a low-cost configuration.
  • the present invention relates to the passenger conveyor controller equipped with a load device for reducing a residual voltage of the drive motor. After the motor has been disconnected from the conversion device or utility power, the motor is connected to the load device. As a result, the present invention is applicable to a passenger conveyor controller which can actively reduce the residual voltage of the drive motor, thereby shortening a switching time and lessening switching shock.
  • the present invention relates to the passenger conveyor controller, when operation is switched from low-speed operation to high-speed operation, some of the plurality of drive motors connected to a conversion device connected to utility power is disconnected from the conversion device. Subsequently, while a residual voltage of the motor has dropped, all of the motors are connected directly to the utility power. Further, even at the time of switching of operation from high-speed operation to low-speed operation, all of the drive motors connected directly to utility power are disconnected from the utility power. Subsequently, while the residual voltages of the motors have dropped, some of the motors are connected to the conversion device. As a result, the present invention is applicable to a passenger conveyor controller which can diminish the residual voltages of the motors quickly, thereby lessening switching shock.
  • the present invention relates to the passenger conveyor controller, wherein some of the plurality of drive motors are disconnected from the conversion device at the time of switching of operation from low-speed operation to high-speed operation. After a given period of time, all the motors are connected to utility power. Further, all the motors are disconnected from the utility power when operation is switched from high-speed operation to low-speed operation. After a given period of time, some of the plurality of motors are connected to the conversion device.
  • the present invention is applicable to a passenger conveyor controller which can diminish the residual voltages of the motors quickly, thereby lessening switching shock.
  • the present invention relates to the passenger conveyor controller equipped with a residual voltage sensor for sensing residual voltages of drive motors.
  • a residual voltage sensor for sensing residual voltages of drive motors.
  • the present invention relates to the passenger conveyor controller equipped with a load device for reducing residual voltages of a plurality of drive motors. After some or all of the motors have been disconnected from the conversion device or utility power, the motor is connected to the load device.
  • the present invention is applicable to a passenger conveyor controller which can diminish the residual voltages of the motors actively, and hence shortening of a switching time and reduction of switching shock can be effected.
  • the present invention relates to the passenger conveyor controller equipped with a passenger sensor for sensing presence/absence of users of the conveyor.
  • the passenger conveyor is switched from low-speed operation to high-speed operation. If no users are detected, the passenger conveyor is switched from high-speed operation to low-speed operation.
  • the present invention is applicable to a passenger conveyor controller which can effect changing of speed of the passenger conveyor in accordance with presence/absence of users with a high level of reliability and by means of a low cost configuration.
  • the present invention relates to a passenger conveyor equipped with the foregoing passenger conveyor controller.
  • the present invention is applicable to a passenger conveyor which can effect switching of operation between high-speed operation and low-speed operation without involvement of switching shock or noise.

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  • Escalators And Moving Walkways (AREA)
  • Control Of Conveyors (AREA)

Claims (8)

  1. Commande de tapis roulant de transport de passagers comprenant :
    un circuit de fonctionnement à grande vitesse (11, 11d, 17) adapté pour connecter, de manière reconnectable, une puissance de service (R, S, T) pour fournir un courant CA triphasé de fréquence donnée à un moteur d'entraînement (2) pour entraîner un tapis roulant de transport de passagers ;
    un circuit de fonctionnement à faible vitesse (10, 10c, 16) adapté pour connecter un dispositif de conversion à tension variable et fréquence variable (1; VVVF), connecté à la puissance de service (R, S, T), avec le moteur d'entraînement (2) de manière reconnectable, le dispositif de conversion (1) convertissant le courant CA triphasé (R, S, T) de fréquence donnée en un courant CA triphasé à tension variable et fréquence variable ; et
    un commutateur de changement (9) pour changer la vitesse du tapis roulant de transport de passagers par commutation entre le circuit de fonctionnement à grande vitesse (11, 11d, 17) et le circuit de fonctionnement à faible vitesse (10, 10c, 16) ;
    dans laquelle le commutateur de changement (9) est configuré pour convertir un courant CA basse fréquence produit par le dispositif de conversion (1) en un courant CA de sorte que le courant CA ait sensiblement la même fréquence que celle d'un courant CA produit par la puissance de service (R, S, T) ; puis configuré pour ouvrir un circuit fermé constitué du moteur d'entraînement (2) et du dispositif de conversion (1) ou de la puissance de service (R, S, T), en constituant ce faisant un circuit ouvert ; et configuré pour fermer un circuit ouvert constitué du moteur d'entraînement (2) et de la puissance de service (R, S, T) ou du dispositif de conversion (1) pour une commutation entre le circuit de fonctionnement à grande vitesse (11, 11d, 17) et le circuit de fonctionnement à faible vitesse (10, 10c, 16) soit après écoulement d'une période de temps prédéterminée pendant laquelle une tension résiduelle du moteur d'entraînement (2) a chuté jusqu'à un niveau dans lequel un choc de commutation est réduit, soit lorsqu'une tension résiduelle détectée du moteur d'entraînement a chuté à niveau égal ou inférieur à un niveau prédéterminé, en constituant ce faisant un circuit fermé.
  2. Commande de tapis roulant de transport de passagers selon la revendication 1, comprenant en outre un détecteur de tension résiduelle pour la détection d'une tension résiduelle du moteur d'entraînement (2) ;
    dans laquelle le commutateur de changement (9) commute entre le circuit de fonctionnement à grande vitesse et le circuit de fonctionnement à faible vitesse après que la tension résiduelle détectée par le détecteur de tension résiduelle ait chuté à un niveau égal et inférieur à une valeur prédéterminée, en constituant ce faisant un circuit fermé.
  3. Commande de tapis roulant de transport de passagers selon l'une quelconque des revendications 1 à 2, comprenant en outre un dispositif de charge (25) qui réduit une tension résiduelle du moteur d'entraînement (2) et est connecté de manière amovible au moteur d'entraînement (2) ;
    dans laquelle le dispositif de charge (25) est adapté pour être connecté au moteur d'entraînement (2) après avoir ouvert un circuit fermé constitué du moteur d'entraînement (2) et du dispositif de conversion (1) ou de la puissance de service (R, S, T), en constituant ce faisant un circuit ouvert.
  4. Commande de tapis roulant de transport de passagers comprenant :
    une pluralité de circuits de fonctionnement à grande vitesse (11, 11d, 17) adaptés pour connecter, de manière reconnectable, une puissance de service (R, S, T) pour fournir un courant CA triphasé de fréquence donnée à une pluralité de moteurs d'entraînement (2) pour entraîner un tapis roulant de transport de passagers ;
    une pluralité de circuits de fonctionnement à faible vitesse (10, 10c, 16) adaptés pour connecter un dispositif de conversion (1), connecté à la puissance de service (R, S, T), avec la pluralité de moteurs d'entraînement (2) de manière reconnectable, le dispositif de conversion à tension variable et fréquence variable (1 ; VVVF) convertissant le courant CA triphasé de fréquence donnée en un courant CA triphasé à tension variable et fréquence variable ; et
    un commutateur de changement (9) adapté pour changer la vitesse du tapis roulant de transport de passagers par commutation entre la pluralité de circuits de fonctionnement à grande vitesse (11, 11d, 17) et les circuits de fonctionnement à faible vitesse (10, 10c, 16) ;
    dans laquelle le commutateur de changement (9) est adapté pour convertir un courant CA basse fréquence produit par le dispositif de conversion (1) en un courant CA de sorte que le courant CA ait sensiblement la même fréquence que celle d'un courant CA produit par la puissance de service (R, S, T) ; puis pour ouvrir un circuit fermé constitué de certains ou de tous les moteurs d'entraînement (2) et du dispositif de conversion (1) ou de la puissance de service (R, S, T), en constituant ce faisant un circuit ouvert; et pour fermer un circuit ouvert constitué de tous ou de certains des moteurs d'entraînement (2) et de la puissance de service (R, S, T) ou du dispositif de conversion (1) pour une commutation entre le circuit de fonctionnement à grande vitesse (11, 11d, 17) et le circuit de fonctionnement à faible vitesse (10, 10c, 16) soit après écoulement d'une période de temps prédéterminée pendant laquelle une tension résiduelle de certains ou de tous les moteurs d'entraînement (2) a chuté à un niveau dans lequel le choc de commutation est réduit, soit lorsqu'une tension résiduelle détectée de certains ou de tous les moteurs d'entraînement (2) a chuté à niveau égal ou inférieur à un niveau prédéterminé, en constituant ce faisant un circuit fermé.
  5. Commande de tapis roulant de transport de passagers selon la revendication 4, comprenant en outre un détecteur de tension résiduelle pour la détection de tensions résiduelles de la pluralité de moteurs d'entraînement (2) ;
    dans laquelle le commutateur de changement (9) est adapté pour ouvrir un circuit fermé constitué de certains ou de tous les moteurs d'entraînement (2) et du dispositif de conversion (1) ou de la puissance de service (R, S, T), en constituant ce faisant un circuit ouvert, et pour fermer un circuit ouvert constitué de tous ou de certains moteurs d'entraînement (2) et de la puissance de service (R, S, T) ou du dispositif de conversion (1) après que les tensions résiduelles détectées par le détecteur de tension résiduelle aient chuté à niveau égal ou inférieur à une valeur prédéterminée, en constituant ce faisant un circuit fermé.
  6. Commande de tapis roulant de transport de passagers selon l'une quelconque des revendications 4 à 5, comprenant en outre un dispositif de charge qui réduit des tensions résiduelles de la pluralité de moteurs d'entraînement (2) et est connecté de manière amovible aux moteurs d'entraînement (2) ;
    dans laquelle le dispositif de charge est adapté pour être connecté aux moteurs d'entraînement (2) après avoir ouvert un circuit fermé constitué de certains ou de tous les moteurs d'entraînement (2) et du dispositif de conversion (1) ou de la puissance de service (R, S, T), en constituant ce faisant un circuit ouvert.
  7. Commande de tapis roulant de transport de passagers selon l'une quelconque des revendications 1 à 6, comprenant en outre un capteur de passager pour détecter la présence ou l'absence d'usagers du tapis roulant de transport de passagers ;
    dans laquelle le commutateur de changement est adapté pour changer la vitesse du tapis roulant de transport de passagers en fonction du résultat de détection du capteur de passager.
  8. Tapis roulant de transport de passagers équipé de la commande de tapis roulant de transport de passagers selon l'une quelconque des revendications 1 à 7.
EP01941256.8A 2001-01-22 2001-06-26 Unite de commande pour tapis roulant de transport de personnes, et tapis roulant de transport de personnes Expired - Lifetime EP1394097B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001012784A JP4757390B2 (ja) 2001-01-22 2001-01-22 マンコンべアの制御装置
JP2001012784 2001-01-22
PCT/JP2001/005459 WO2002057174A1 (fr) 2001-01-22 2001-06-26 Unite de commande pour tapis roulant de transport de personnes, et tapis roulant de transport de personnes

Publications (3)

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EP1394097A1 EP1394097A1 (fr) 2004-03-03
EP1394097A4 EP1394097A4 (fr) 2007-03-21
EP1394097B1 true EP1394097B1 (fr) 2017-12-20

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EP01941256.8A Expired - Lifetime EP1394097B1 (fr) 2001-01-22 2001-06-26 Unite de commande pour tapis roulant de transport de personnes, et tapis roulant de transport de personnes

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EP (1) EP1394097B1 (fr)
JP (1) JP4757390B2 (fr)
KR (1) KR100508323B1 (fr)
CN (1) CN1247434C (fr)
TW (1) TW504486B (fr)
WO (1) WO2002057174A1 (fr)

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JP2005145694A (ja) * 2003-11-19 2005-06-09 Toshiba Elevator Co Ltd 乗客コンベア
FI120194B (fi) * 2008-03-14 2009-07-31 Kone Corp Kuljetinjärjestelmä
CN102556825A (zh) * 2011-12-28 2012-07-11 黄德雄 节能高效型扶梯控制***
CN103872967A (zh) * 2012-12-17 2014-06-18 通力股份公司 变频器和具有变频器的扶梯控制装置
CN103863932B (zh) * 2012-12-17 2017-09-05 通力股份公司 变频器和具有变频器的扶梯控制装置
JP2014231428A (ja) * 2013-05-30 2014-12-11 三菱電機株式会社 マンコンベアの制御装置および制御方法
CN105151972A (zh) * 2015-08-24 2015-12-16 苏州市新瑞奇节电科技有限公司 一种公共场所用智能电动扶梯
CN107922169B (zh) * 2015-08-31 2020-05-19 奥的斯电梯公司 具有自适应电源单元的初始化和电动机的识别的输送机驱动单元
CN110709347B (zh) * 2017-06-08 2020-10-09 三菱电机株式会社 乘客输送装置及乘客输送装置的控制装置
TW202228383A (zh) * 2020-11-16 2022-07-16 瑞士商伊文修股份有限公司 用於乘客運輸系統的控制裝置

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Publication number Publication date
TW504486B (en) 2002-10-01
JP2002211865A (ja) 2002-07-31
CN1430575A (zh) 2003-07-16
EP1394097A4 (fr) 2007-03-21
KR100508323B1 (ko) 2005-08-17
WO2002057174A1 (fr) 2002-07-25
KR20020086659A (ko) 2002-11-18
EP1394097A1 (fr) 2004-03-03
CN1247434C (zh) 2006-03-29
JP4757390B2 (ja) 2011-08-24

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