JP2000198657A - Control device of passenger conveyer group - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device of passenger conveyer group which can be composed in a small size and at a low cost. SOLUTION: A passenger conveyer group of plural conveyers is composed by including a rising direction operating passenger conveyer U1 and a lowering direction operation passenger conveyer D1 which are operated by a power converter 2 with one set converter 2a, and the consuming energy PU1 in the rising direction operating passenger conveyer U1 is supplemented by regenerating the energy PD1 in the lowering direction operating passenger conveyer D1, so as to utilize the flow of the energy effectively as a whole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control system for a group of passenger conveyors.

[0002]

2. Description of the Related Art A conventional passenger conveyor control device is provided with an inverter device or the like which can control the speed by changing the frequency for each passenger conveyor. This passenger conveyor performs not only the upward operation but also the downward operation, and when the downward operation is performed, the electric motor operates as a generator due to the load of the passenger, so that the passenger conveyor includes a regenerative converter for regenerating the generated energy to the power supply, Alternatively, a circuit for consuming this energy with a resistor is provided.

[0003]

However, in the conventional passenger conveyor control device, when a regenerative converter for regenerating the energy generated during the downward operation of the passenger conveyor to the power supply is provided, the control device becomes large and the machine room becomes narrow. In addition to making it difficult to install, it becomes expensive, and if a resistor circuit is used that consumes the generated energy, the power consumption will increase and the energy at the corner will be used effectively. Could not.

[0004] It is an object of the present invention to provide a control apparatus for a group of passenger conveyors, which can be made small and inexpensive.

[0005]

In order to achieve the above-mentioned object, the present invention comprises a plurality of passenger conveyors for driving a plurality of steps connected endlessly by a driving device, and the driving device supplies electric power to an electric motor. In the control device for a group of passenger conveyors provided with a power converter for supplying, the power converter has one converter for converting AC power to DC power and an inverter for converting DC power to AC power. And at least two or more of the passenger conveyors are operated by one of the power converters.

The control apparatus for a group of passenger conveyors according to the present invention is configured such that at least two or more of the passenger conveyors are operated by the power converter having one converter as described above. It can be small and inexpensive, especially if at least two passenger conveyors include an ascending driving passenger conveyor and a descending driving passenger conveyor, even if the ascending driving passenger conveyor consumes energy, Since the downward driving passenger conveyor acts to regenerate energy to the power converter, the energy flow can be effectively utilized.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a control device for a group of passenger conveyors according to an embodiment of the present invention.
The power converter 2 connected to the power supply E converts AC power into DC power by one converter 2A, smoothes it with a filter capacitor 2B, and passes through DC contactors 2F and 2G provided for each passenger conveyor. These are provided to the inverters 2C and 2D, respectively. The semiconductor elements Tu of the inverters 2C and 2D
p to Twn are supplied with a PWM pulse from a PWM pulse gate circuit (not shown) and are converted into AC power having a variable voltage and a variable frequency. The converted AC power is supplied to the upward driving passenger conveyor U1 and the downward driving passenger conveyor D1.
Are supplied to the respective electric motors 1U1 and 1D1. The two electric motors 1Ul, 1D1 transmit power to the gears 3U1, 3D1.
7U1, 7D1 and the handrail 9U via the gear sprockets 4Ul, 4D1 and the sprockets 5Ul, 5D1 and the chains 6Ul, 6D1.
1, 9D1 are driven to drive the passenger conveyors Ul, D1 in the ascending direction and the descending direction, respectively, with the speed curves Vul, Vd1, as shown in FIG.

[0008] As described above, the passenger conveyor U1 driven in the ascending direction.
Since a plurality of passenger conveyors including the downward driving passenger conveyor D1 are operated by one converter 2A, the upward driving passenger conveyor U1 receives energy PU from the inverter 2C in the arrow direction and consumes energy. However, the downward driving passenger conveyor D1 acts on the inverter 2D to regenerate the energy PD in the direction of the arrow. Therefore, since the energy PD of the downward driving passenger conveyor D1, that is, the energy P1 acts to supplement the energy P2 obtained from the converter 2A, the flow of energy can be effectively utilized.

FIG. 3 is a characteristic diagram showing the relationship between the passenger rate and the energy consumption rate of the group of passenger conveyors shown in FIG. Energy PU1 consumed by ascending driving passenger conveyor U1
Is compensated by the energy PD1 regenerated by the downward driving passenger conveyor D1, so that the passenger ratio of the upward driving passenger conveyor U1 and that of the downward driving passenger conveyor D1 are the same.
The energy for carrying the passenger is almost zero, and the energy consumption rate (PU1-PD1) does not change. By operating the ascending-operation passenger conveyor U1 and the ascending-operation passenger conveyor D1 with one converter 2A in this manner, it is possible to reduce the installation space for the control device and to configure the controller inexpensively. Ascending direction passenger conveyor U as shown
Since the energy PU1 consumed by the vehicle 1 is supplemented by the energy PD1 regenerated by the downward driving passenger conveyor D1, the control device can consume less energy.

As shown in FIG. 1, the converter 2A is composed of a plurality of self-extinguishing elements such as transistors and a plurality of rectifiers.
Energy PD1 generated in the ascending direction is driven by the passenger conveyor U
When the DC voltage becomes higher than the energy PU1 consumed in step S1 and the DC voltage becomes higher, the regenerative operation judging circuit 19 receives the output of the DC voltage measuring circuit 2E provided in parallel with the filter capacitor 2B.
Generates an output, operates the PWM pulse gate circuit 18, generates PWM pulses Up, Un, Vn, Wp, and Wn to regenerate the return energy (PD1-PU1) to the power supply E, thereby further reducing power consumption. it can. On the other hand, in a situation where the number of passengers is constantly small and the energy PD1 generated in the downward passenger conveyor D1 does not become larger than the energy PU1 consumed in the upward driving passenger conveyor U1, the converter 2A shown in FIG. Replacement, DC voltage measurement circuit 2D, regenerative operation determination circuit 19, P
Since the WM pulse gate circuit 18 can be omitted, the power converter can be configured smaller and cheaper.

In the inverter 2C of the power converter 2 shown in FIG. 1, the speed command circuit 10 operates according to the time set by the clock 17, and the speed control circuit 11 controls the PWM pulse gate circuit 12 in accordance with the speed command. The inverter 2C is operated to generate PWM pulses Up, Un, Vn, Wp, and Wn, thereby changing the voltage and frequency of the inverter 2C to control the speed. For example, as shown in FIG. 4, the timepiece 17 reduces the speed command S2 to the speed command S1 in the time period from 10:00 to 17:00 as shown in FIG. 4, and accordingly, the speed of the passenger conveyor group is shown in FIG. Is controlled so as to be low speed.

In general, the passenger rate of the passenger conveyor group of distribution customers is distributed like the passenger rate F1 shown in FIG. 6, and is small from 10 o'clock to 17 o'clock when the store opens, and sharply after 17:00. More. Elderly passengers, on the other hand,
As shown in the passenger rate F2 in FIG.
It is considered that they are active until the hour.

The clock 17 is operated by the speed command circuit 10 during the time period from 10:00 to 17:00, as shown in FIG. 4, to change the speed command from the normal speed command S2 to a speed suitable for the elderly. Decrease to command S1. The speed control circuit 11 receiving the speed command S1 changes the PWM pulse gate circuit 1
2, the speed is controlled by the inverter 2C, and as shown in FIG. 5, the speed of the passenger conveyors U1 and D1 is reduced to perform an operation friendly to the elderly. On the other hand, 10:00
At times other than 7:00, when the passenger conveyors U1 and D1 are activated, the speed command S2 is a normal speed command, and as shown in FIG. 5, an efficient operation faster than the speed command S1 can be performed. The speed curve Vul shown in FIG. 5 corresponds to the upward driving passenger conveyor U1, and the speed curve Vdl corresponds to the downward driving passenger conveyor D1. At this time, the speed of the passenger conveyors U1, D1 is controlled by the inverter 2C.

By setting the clock 17 according to the situation of the distribution customer in this way, the speed of the passenger conveyors U1 and D1 is controlled in the time zone, and the passenger conveyor group friendly to the elderly and easy to use for the elderly is provided. can do.

The energy loss of the passenger conveyor group is as follows:
As shown in FIG. 7, the number decreases as the speed decreases. Therefore,
When driving at low speed during the time set as described above,
The energy loss of the passenger conveyor is reduced. Moreover, when two or more ascending-driving passenger conveyors U1 and ascending-driving passenger conveyors D1 are controlled by one power converter 2, the ascending-driving passenger conveyor U1 consumes as shown in FIG. Since the energy PU1 to be supplied is supplemented by the energy PD1 regenerated by the passenger conveyor D1 in the downward driving direction, the energy consumption rate (PUl-PDl) can be extremely reduced as shown in FIG.

FIG. 9 is a schematic configuration diagram showing a passenger conveyor group control device according to another embodiment of the present invention. The same reference numerals are given to the same components as those in the embodiment shown in FIG. 1 and the detailed description is omitted, and only the newly illustrated safety device system will be described. Various safety devices 8U1 and 8D1 are respectively attached to the passenger conveyors U1 and D1, and signal lines 20U1 and 20 from these safety devices 8U1 and 8D1.
D1 is connected to the safety device operation signal processing unit 8. The processing result in the safety device operation signal processing unit 8 based on the input signal is sent to the signal processing unit 16 such as the main circuit brake circuit of each unit, and appropriate measures are taken based on the cause of the failure.

For example, assuming that the ascending-driving passenger conveyor U1 breaks down at time T1 shown in FIG. 10, the safety device 8U1 operates and a detection signal is input to the safety device operation signal processing unit 8 via the signal line 20U1. Is done. When the safety device operation signal processing unit 8 performs signal processing and outputs the failure signal 13, the signal processing unit 16 which has received the failure signal 13 opens the DC contact 2F of the ascending traveling passenger conveyor U1 and simultaneously releases the brake. A circuit (not shown) of 15U1 is opened to perform a braking operation, and the failed ascending traveling passenger conveyor U1 is safely stopped. Thereafter, assuming that the failure is restored at time T2 in FIG. 10 and the circuit of the DC contact 2F and the brake 15U1 of the ascending-driving passenger conveyor U1 is quickly closed, the ascending-driving passenger conveyor U1 is restored.

Thus, a plurality of passenger conveyors U1, D1
Is configured to be controlled by the power converter 2 having one converter 2A, the signals of the safety devices 8U1 and 8D1 are processed by the configuration safety device operation signal processing unit 8 and the signal processing unit 16 for each unit. Thereby, the passenger conveyor can be effectively operated without stopping all the passenger conveyor groups.

FIG. 11 is a schematic configuration diagram showing a control device for a group of passenger conveyors according to another embodiment of the present invention. The power converter 2 connected to the power supply E converts AC power to DC power by the converter 2A, smoothes it by the filter capacitor 2B, and supplies it to the inverter 2C. The semiconductor elements Tup to Twn of the inverter 2C are connected to a PWM pulse gate (not shown). A PWM pulse is provided from the circuit, and is converted into AC power having a variable voltage and a variable frequency. The converted AC power passes through the main contacts 14U1 to 14Un of each passenger conveyor, and the electric motors 1U1 to 1U of at least two or more passenger conveyor groups.
It is connected so as to be supplied to Un. 1U for each motor
1 to 1Un are powered by gears 3Ul to 3Un, gear sprockets 4Ul to 4Un, and sprockets 5Ul to 5Un.
And step 7U via chains 6U1-6Un
1 to 7Un and the handrails 9U1 to 9Un are driven, and the passenger conveyor groups Ul to Un are respectively driven by speed curves Vul to Vun as shown in FIG.

Thus, a plurality of passenger conveyors Ul to U
Since n is operated by one power converter 2, the size of the control device can be reduced. For example, FIG.
As shown in Fig. 3, each passenger conveyor Ul from the first floor to the sixth floor
When U6 to U6 are configured, the control device CB only needs to be installed in one machine room M located at the intermediate portion, so that the space around the passenger conveyor can be effectively utilized and the device can be manufactured at low cost. In addition, each passenger conveyor Ul to U
Since n can be controlled by the inverter 2C so that the start and stop have a gentle speed curve, the operation of the observer can be performed at one place.

FIG. 14 is a schematic configuration diagram showing a control device for a group of passenger conveyors according to another embodiment of the present invention. The power converter 2 connected to the power supply E converts the AC power into the DC power by the converter 2A, smoothes it with the filter capacitor 2B, and after the semiconductor elements Tup to Twn of the inverter 2C.
Receives a PWM pulse from a PWM pulse gate circuit (not shown) and converts it into AC power of a variable voltage and variable frequency. The converted AC power is supplied to a plurality of ascending driving passenger conveyors U1 to Un and a descending driving passenger conveyor D1 to D1.
Dn main contacts 14U1-14Un, 14D1-14
Dn, each of the electric motors 1U1 to 1Un, 1D1 to 1Dn
Connected to be supplied. Each main contact 14U
1 to 14Un connect the outputs U, V, W of the power converter 2 and the terminals U, V, W of the electric motors 1U1 to 1Un to operate the ascending-driving passenger conveyors U1 to Un, respectively. The main contacts 14D1 to 14Dn are connected to the outputs U, V, W of the power converter 2 and the terminals W, V,
U is connected to drive the downward driving passenger conveyors D1 to Dn.

Each motor 1Ul to 1Un, 1D1 to 1Dn
Powers the gears 3U1-3Un, 3D1-3Dn, the sprockets 4U1-4Un, 4D1-4Dn of the gears,
Steps 7U1 to 7Un, 7D1 to 7Un, and a handrail 9 via sprockets 5U1 to 5Un, 5D1 to 5Dn, and chains 6U1 to 6Un, 6D1 to 6Dn.
Ul to 9Un and 9D1 to 9Dn are respectively driven, and the ascending-driving passenger conveyors Ul to Un and the descending-driving passenger conveyors D1 to Dn are respectively driven by velocity curves Vul to Vun and Vd1 to Vdn as shown in FIG. The speed curves Vul to Vun shown in FIG. 15 correspond to the ascending-direction driving passenger conveyors U1 to Un, respectively, and the speed curves Vdl to Vun.
dn corresponds to each of the downward driving passenger conveyors D1 to Dn. At this time, each passenger conveyor U1 to Un, D1 to
Since the speed of Dn is controlled by the inverter 2C, a speed curve with a gentle start and stop can be obtained.

As described above, as a plurality of passenger conveyor groups,
When it is configured to include the ascending-driving passenger conveyors U1 to Un and the descending-driving passenger conveyors D1 to Dn that are operated by one power converter 2, the ascending-driving passenger conveyors U1 to Un as shown in FIG. Energy is consumed by receiving the energy PU1 to PUn from the unit 2 in the direction of the arrow, and the downward driving passenger conveyors D1 to Dn act on the power converter 2 to regenerate the energy PD1 to PDn in the direction of the arrow. Accordingly, the energies PD1 to PDn of the descending driving passenger conveyors Dl to Dn are added up as the energy P3 and act to supplement the energy P2 consumed by the ascending driving passenger conveyors U1 to Un, so that the energy flow as a whole is reduced. It can be used effectively.

FIG. 16 is a characteristic diagram showing the passenger rate and the energy consumption rate of the group of passenger conveyors shown in FIG. Energy PU consumed by ascending driving passenger conveyors U1 to Un
In order to supplement 1 to PUn with the energy PD1 to PDn regenerated by the downward driving passenger conveyors D1 to Dn, if the passenger rates of the upward driving passenger conveyors U1 to Un and the downward reverse passenger conveyor D1 to Dn are the same, The energy for carrying the passenger is almost zero, and the energy consumption rate ｛(PU1 to P
Un) − (PD1 to PDn)} do not change. As described above, the passenger conveyor U1 operating in the ascending direction is driven by one power converter 2.
When the passenger conveyors D1 to Dn are driven in the descending direction, the installation space for the control device can be reduced and the cost can be reduced. In addition, as shown in FIG. Energy P consumed by Un
Since U1 to PUn are supplemented with the energy PD1 to PDn regenerated by the downward driving passenger conveyors D1 to Dn, a control device that consumes less energy can be provided.

FIG. 17 is a schematic configuration diagram showing a passenger conveyor group control device according to another embodiment of the present invention. The power converter 2 connected to the power supply E converts the AC power into the DC power by the converter 2A, smoothes it with the filter capacitor 2B, and after the semiconductor elements Tup to Twn of the inverter 2C.
Receives a PWM pulse from a PWM pulse gate circuit (not shown) and converts it into AC power of a variable voltage and variable frequency. The converted AC power is supplied to a plurality of ascending driving passenger conveyors U1 to Un and a descending driving passenger conveyor D1 to D1.
Dn main contacts 14U1 to 14Un, 14D1 to 14D
n, the motors 1U1 to 1Un and 1D1 to 1Dn are connected so as to be supplied. Each main contact 14U1
１４14Un connect the outputs U, V, W of the power converter 2 and the terminals U, V, W of the electric motors 1U1 to 1Un to drive the ascending-driving passenger conveyors U1 to Un.
The main contacts 14D1 to 14Dn are connected to the outputs U, V, W of the power converter 2 and the terminals W, V, U of the electric motors 1D1 to 1Dn.
Is connected to drive the passenger conveyors D1 to Dn in the descending direction. Each motor 1Ul to 1Un, 1D1
-1Dn are powered by gears 3U1-3Un, 3D1-3D
n and gear sprockets 4Ul-4Un, 4D1-4
Dn and sprockets 5U1-5Un, 5D1-5Dn
7U1 to 7Un, 7D1 to 7Un, and the handrails 9U1 to 9Un, 9D1 to 9Dn are driven via the chains 6U1 to 6Un, 6D1 to 6Dn, respectively, and the ascending driving passenger conveyors Ul to Un and the descending driving are performed. Passenger conveyors D1 to Dn are each represented by a speed curve V
It is configured to operate at ul to Vun and Vd1 to Vdn.

Here, the inverter 2C of the power converter 2
When the time set by the clock 17 is reached, the speed command circuit 10 operates to give a speed command to the speed control circuit 11, and the speed control circuit 11 operates the PWM pulse gate circuit 12 in accordance with the speed command. From the PWM pulse gate circuit 12, the PWM pulses Up, Un, Vp, Vn, Wp,
By receiving Wn, the voltage and frequency of the inverter 2C are changed to control the speed.

The passenger ratio of the passenger conveyor group of the distribution customers is distributed like the passenger ratio F1 shown in FIG. 6, and is small from 10 o'clock to 17 o'clock when the store opens, and rapidly increases after 17:00. ing. On the other hand, among the passengers, the elderly are considered to be active in the time period from 10:00 to around 17:00 when the store opens, as indicated by the passenger rate F2 in FIG.

Then, during the time period from 10 o'clock to 17 o'clock set as shown in FIG. 4, the timepiece 17 operates to reduce the speed command circuit 10 from the normal speed command S2 to the speed command S1 suitable for the elderly. I do. The speed control circuit 11, which has received the speed command S1, controls the speed by the inverter 2C via the PWM pulse gate circuit 12, and as shown in FIG. 18, the ascending-driving passenger conveyors U1 to Un and the descending-driving passenger conveyor D1 to D1. Reduce the speed of Dn to drive elderly-friendly. On the other hand, when the passenger conveyor is activated at times other than the set time from 10:00 to 17:00, the speed corresponds to the normal speed command S2 shown in FIG.
As shown in (1), an efficient operation faster than the speed command S1 can be performed. The speed curve Vu shown in FIG.
1 to Vun correspond to the upward driving passenger conveyors U1 to Un, and the speed curves Vdl to Vdn correspond to the downward driving passenger conveyors D1 to Dn. At this time, the speed of each of the passenger conveyors U1 to Un and D1 to Dn is controlled by the inverter 2C. By setting the clock 17 according to the situation of the distribution customer in this way, the speed of each of the passenger conveyors U1 to Un and D1 to Dn is controlled in the time zone, and the elderly and gentle passenger conveyor is easy to use. It can be a group.

The energy loss of the passenger conveyor group decreases as the speed decreases as shown in FIG. Accordingly, when the vehicle is driven at a low speed during the time period set as described above, the energy loss of the passenger conveyor is reduced. Moreover, two or more passenger conveyors U1 to Un, D1 to Dn
Is divided into an ascending direction operation and a descending direction operation, and is controlled by one power converter 2, the energy PU1 consumed by the ascending direction passenger conveyors U1 to Un as shown in FIG. In order to supplement PUn with the energy PD1 to PDn regenerated by the downwardly traveling passenger conveyors D1 to Dn, the energy consumption rate ｛(PUl to PUn) − (P
Dl to PDn)｝ can be made very small as shown in FIG.

FIG. 20 is a schematic block diagram showing a passenger conveyor group control device according to still another embodiment of the present invention. Components equivalent to those in the embodiment shown in FIG. 17 are denoted by the same reference numerals, detailed description thereof will be omitted, and only a newly illustrated safety device system will be described. Each passenger conveyor U1
Un, D1 to Dn include various safety devices 8U1 respectively.
-8Un, 8D1-8Dn, and signal lines 20U1 from these safety devices 8U1-8Un, 8D1-8Dn.
To 20Un and 20D1 to 20Dn are connected to the safety device operation signal processing unit 8. The processing result in the safety device operation signal processing unit 8 based on the input signal is sent to the signal processing unit 16 such as the main circuit brake circuit of each unit, and appropriate measures are taken based on the cause of the failure.

For example, if the ascending-driving passenger conveyor U1 fails at time T1 shown in FIG. 21, the safety device 8U1 operates, and a detection signal is input to the safety device operation signal processing unit 8 via the signal line 20U1. Is done. When the safety device operation signal processing unit 8 performs signal processing and outputs the failure signal 13, the signal processing unit 16 receiving the failure signal 13 opens the main contact 14U1 of the ascending traveling passenger conveyor U1 and simultaneously releases the brake 15U1. Circuit (not shown) is opened to perform a braking operation, and the failed ascending driving passenger conveyor U
Stop 1 safely. Thereafter, at time T2, the failure is recovered, and the main contact 14U1 of the ascending direction passenger conveyor U1 is restored.
Assuming that the circuit of the brake 15U1 is closed quickly, the ascending-driving passenger conveyor U1 is restored.

As described above, each of the plurality of passenger conveyors U1 to U
n, D1 to Dn are controlled by one power converter 2, but the signals of the safety devices 8U1 to 8Un and 8D1 to 8Dn are transmitted by the constituent safety device operation signal processing unit 8 and the signal processing unit 16, respectively. By processing each time, the passenger conveyor can be used effectively without stopping all the passenger conveyor groups.

[0033]

As described above, the control apparatus for a group of passenger conveyors according to the present invention is constructed so that a plurality of passenger conveyors are operated by a power converter having one converter, so that the control apparatus is inexpensively constructed. In addition, the installation space of the machine room can be effectively utilized to reduce the size.
In addition, when the passenger conveyor driven by the power converter having one converter includes an ascending-driving passenger conveyor and a descending-driving passenger conveyor, the energy consumed by the ascending-driving passenger conveyor is reduced in the descending direction. Since the energy is supplemented by energy regenerated by the driving passenger conveyor, energy consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a control device for a group of passenger conveyors according to an embodiment of the present invention.

FIG. 2 is a speed curve diagram of the control device of the passenger conveyor group shown in FIG.

FIG. 3 is a characteristic diagram showing a relationship between a passenger rate and an energy consumption rate of the control device of the passenger conveyor group shown in FIG.

FIG. 4 is a speed command diagram of the control device of the passenger conveyor group shown in FIG. 1;

FIG. 5 is a speed curve diagram of the control device of the passenger conveyor group shown in FIG. 1;

FIG. 6 is a distribution diagram of a passenger rate of the control device of the passenger conveyor group shown in FIG. 1;

FIG. 7 is a characteristic diagram showing a relationship between speed and energy loss of the control device of the passenger conveyor group shown in FIG. 1;

FIG. 8 is a characteristic diagram showing a relationship between a passenger rate and an energy consumption rate of the control device for the passenger conveyor group shown in FIG.

FIG. 9 is a schematic configuration diagram of a control device for a group of passenger conveyors according to another embodiment of the present invention.

FIG. 10 is a speed curve diagram of the control device of the passenger conveyor group shown in FIG. 9;

FIG. 11 is a schematic configuration diagram of a control device for a group of passenger conveyors according to still another embodiment of the present invention.

FIG. 12 is a speed curve diagram of the control device of the passenger conveyor group shown in FIG. 11;

FIG. 13 is a side view showing an arrangement of a control device of the passenger conveyor group shown in FIG. 11;

FIG. 14 is a schematic configuration diagram of a control device for a group of passenger conveyors according to still another embodiment of the present invention.

FIG. 15 is a speed curve diagram of the control device of the passenger conveyor group shown in FIG. 14;

16 is a characteristic diagram showing a relationship between a passenger rate and an energy consumption rate of the control device for the passenger conveyor group shown in FIG.

FIG. 17 is a schematic configuration diagram of a control device for a group of passenger conveyors according to still another embodiment of the present invention.

18 is a speed curve diagram of the control device for the group of passenger conveyors shown in FIG. 17;

19 is a characteristic diagram illustrating a relationship between a passenger rate and an energy consumption rate of the control device for the passenger conveyor group illustrated in FIG. 17;

FIG. 20 is a schematic configuration diagram of a control device for a group of passenger conveyors according to still another embodiment of the present invention.

FIG. 21 is a speed curve diagram of the control device for the group of passenger conveyors shown in FIG. 20;

[Explanation of symbols]

1U1 to 1Un motor 2 power converter 2A converter 2C, 2D inverter 8 safety device operation signal processing unit 8U1 to 8Dn safety device 10 speed command circuit 11 control circuit 12, 18 PWM pulse gate circuit 14U1 to 14Un main contact 17 clock 19 regeneration Operation determination circuit D1 to Dn Downward traveling passenger conveyor F1 Passenger rate F2 Elderly passenger rate P1 to P4, PU1, PD1 Energy flow S1, S2 Speed command U1 to Unupward traveling passenger conveyor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeki Ando 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan Inside the Hitachi Building System Co., Ltd. (72) Inventor Toshio Meguro 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan Inside the Hitachi Building System (72) Inventor Yoshio Matsuzaki 1-6-6 Kanda Nishikicho, Chiyoda-ku, Tokyo Co., Ltd. Inside the Hitachi Building System (72) Makoto Kuroki 1-6-6 Kanda Nishikicho, Chiyoda-ku, Tokyo Co., Ltd. Hitachi Building System (72) Inventor Koji Yamashita 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Co., Ltd. Hitachi Building Systems Co., Ltd. (72) Inventor Hiroshi Sugai 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building Co., Ltd. In the system (72) Inventor Toshiaki Abe 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building Systems Co., Ltd. (72) Inventor Hideaki Seki 1070 Ma, Hitachinaka City, Ibaraki Prefecture Co., Ltd.Hitachi, Ltd.Mito Plant (72) Inventor Hisao Chiba 1070 Mo, Hitachinaka City, Ibaraki Prefecture Mito Plant, Hitachi F term (reference) 3F321 DA03 DC05 5H007 BB01 BB06 CA01 CB05 CC05 CC12 DA04 DB01 EA02

Claims (11)

[Claims] 1. A control device for a group of passenger conveyors, comprising a plurality of passenger conveyors for driving a plurality of steps connected endlessly by a driving device, wherein the driving device includes a power converter for supplying electric power to an electric motor. , The power converter comprises one converter for converting AC power to DC power and an inverter for converting DC power to AC power, and at least two or more of the passenger conveyors A control device for a group of passenger conveyors, wherein the control device is configured to be operated by one of the power converters. 2. A control system for a group of passenger conveyors comprising a plurality of passenger conveyors for driving a plurality of steps connected endlessly by a driving device, wherein said driving device includes a power converter for supplying electric power to an electric motor. In the power converter, the power converter comprises one converter for converting AC power to DC power, and a plurality of inverters for converting DC power to AC power, at least ascending driving passenger conveyor and lowering A control device for a group of passenger conveyors, wherein a directional driving passenger conveyor is operated by each of the inverters. 3. A control device for a group of passenger conveyors, comprising a plurality of passenger conveyors for driving a plurality of steps connected endlessly by a driving device, wherein the driving device includes a power converter for supplying electric power to an electric motor. , The power converter comprises one converter for converting AC power to DC power and an inverter for converting DC power to AC power, and at least two or more of the passenger conveyors A control device for a group of passenger conveyors, wherein the control device is configured to be operated by one of the power converters. 4. The method according to claim 1, wherein
The passenger conveyor group control device, wherein the two or more passenger conveyors operated by the one power converter include an upward driving passenger conveyor and a downward driving passenger conveyor. 5. The passenger conveyor according to claim 1, wherein at least two of the passenger conveyors are configured to control the inverter to perform speed control, respectively. Group control device. 6. The method according to claim 1, wherein
Each of the passenger conveyors has a direct current contact provided between the converter and the inverter, a safety device provided for each of the passenger conveyors, and a brake for stopping the operation of each of the passenger conveyors. Configure
The control device for a passenger conveyor group, wherein the brake is configured to operate by opening each of the corresponding DC section contacts by an operation of each of the corresponding safety devices. 7. The passenger conveyor according to claim 3, wherein each of the passenger conveyors includes a main contact provided between the power converter and the electric motor, a safety device provided on each of the passenger conveyors, and And a brake for stopping the operation of the passenger conveyor, wherein the brake is configured to open and operate the corresponding main contact in the operation of the corresponding safety device. A control device for a group of passenger conveyors. 8. A control system for a group of passenger conveyors according to claim 1, wherein said converter comprises a rectifier. 9. A control system for a passenger conveyor group according to claim 1, wherein said converter comprises a plurality of self-extinguishing elements and a plurality of rectifiers. 10. The passenger conveyor group control device according to claim 1, wherein the power converter is disposed in at least one machine room of each of the passenger conveyors. 11. The passenger conveyor group control device according to claim 1, wherein the power converter is disposed in the machine room of the passenger conveyor located at an intermediate portion.