JP2000255918A - Elevator device and elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optimize the selection of power supply as the whole by providing a switching control part for switching the source of the power to be supplied to an electric motor to an AC power source or a power accumulation device according to time. SOLUTION: A change-over switch 30 switches the supply source of power. A switching judgment control part 31 judges the time to switch the power supply source of elevator operation to a commercial power source 1 or a power accumulation device 20, and executes the command transmission of switching to a charging and discharging circuit at this time. The switching judgment control part 31 regularly reads the time data within a power accumulation device operation time schedule table data 32, and writes 'T' of low-speed operation mode into a low-speed table 35 at the time to switch the power supply source to the power accumulation device 20 and 'H' of standard operation mode thereto at the time to return the power supply source to the commercial power source 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus and an elevator system using a power storage device.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a diagram showing a conventional elevator control device disclosed in Japanese Unexamined Patent Publication (Kokai) No. H10-115,873.

In FIG. 5, reference numeral 713 denotes a car, 714 denotes a rope, and 715 denotes a car 7 fixed to one end of the rope 714.
13 counterweight fixed to the other end side of 13
It is. A hoist 716 is driven by an induction motor or the like and rotates. 717 is an induction motor, 7
18 is a three-phase inverter, 719 is a DC bus, 720 is a three-phase rectifier, 721 is an AC main power supply, 726 is a generator, 72
7 is a current controller, 728 to 731 are conductors, 733 is a capacitor, 734 is a current sensor, 735 is a voltage sensor, 736 and 737 are lines, and 740 is a tachometer for detecting the rotation speed of the generator 726. 743 is a brake, 746 and 747 are switches, 748 is a line, 75
1 is a controller, 752 is a boost regulator, 754 and 755 are switches, 756 is a line, 759 and 760 are switches,
761 is a power dissipator, 762 is a line, 766 is a pulse width modulator, 767 and 768 are switches, and 769 is a line.

[0004] 720 is a three-phase rectifier for rectifying the commercial AC main power supply 721 to DC. 718 converts the direct current of the DC bus 19 into an alternating current having a variable voltage and a variable frequency.
17 is a three-phase inverter for driving the inverter 17. Reference numeral 761 denotes a power dissipator for dissipating surplus regenerative power.
33 is a capacitor for stabilizing the DC voltage. 7
26 is a flywheel motor generator driven to store the regenerated energy in the form of inertia.

[0005] Elevator operation is performed using a commercial AC main power supply 72.
1 drives the induction motor 717 and the rotation of the hoisting machine 716 in conjunction with the power source, thereby driving the elevator cars 71 fixedly connected to both ends of the rope 714, respectively.
3 and the counterweight 715 is moved to carry the passenger in the car 713 to a predetermined floor.

[0006] The three-phase rectifier 720 is composed of a diode or the like, and rectifies the AC power supplied from the AC main power supply 721 and converts it into DC power. The three-phase inverter 718 includes a transistor, a power transistor, and the like, and converts DC power into AC power having a variable voltage and a variable frequency.

[0007] The elevator controller 751 determines the start and stop of the elevator, creates its position and speed commands, and drives the induction motor 717 via the three-phase inverter 718. The three-phase inverter 718
Is based on the instruction of the elevator controller, and based on the current feedback and speed feedback detected from the line, the induction motor 71
7 is driven. At the same time, the elevator car 713 is raised and lowered while controlling the position and speed of the elevator.

At this time, the output voltage and frequency of the three-phase inverter 718 are controlled. In addition, the condenser 733
A filter between the DC buses 719 serves as a filter for stabilizing a DC voltage that fluctuates due to the operation of the three-phase inverter 718 transistor and the like.

The counterweight 715 of the elevator is a car 7
Thirteen moderate humans, for example, half the number of passengers, are set to have the same weight and balance each other when riding. For example, when the elevator travels in a balanced state, it is possible to increase the speed while consuming power during acceleration and return the stored speed energy to power during deceleration. Further, even when the car 713 runs down with the full capacity, or when the car 713 runs up with the empty state, the accumulated speed energy can be returned to the electric power.

The electric power in this case is stored in the flywheel motor generator 726 by the current controller 727 as energy of inertia. However, the storage capacity of the flywheel motor generator 726 has an upper limit, and the excess power that cannot be stored is converted into heat energy by the power dissipator 761 and consumed.

The electric power stored in the flywheel motor generator 726 is used when the elevator is accelerating,
When the inside of the car 713 runs up with full capacity,
Induction motor 7 when the vehicle 13 is traveling down while the interior is empty
17 uses power to the consumer, the AC mains power supply 721
As additional power to the DC bus 719.

Thus, the conventional elevator controller 75
In No. 1, an elevator is disclosed in which an elevator is operated when electric power is supplied only from the AC main power supply 721 and a system in which electric power is supplied from the AC main power supply 721 and the flywheel motor generator 726 in combination. ing.

That is, in the conventional elevator operation, the electric power stored in the flywheel motor generator 726 is calculated based on the traveling direction of the elevator car 713, ie, whether the elevator car 713 is descending or ascending, and whether the car is at the start of traveling or at the time of stopping. It has been determined whether to use or not to use according to the traveling conditions of 713.

Further, other conventional techniques, for example, JP-A-61-2
According to the example shown in the patent publication No. 67675, the electric power stored in the battery is used when performing the landing operation at the time of power failure when moving the elevator car 713 when the AC main power supply 721 is out of power.

[0015]

Conventionally, the demand for electric power peaks in the afternoon of a hot summer day, and there is a social demand for reducing the electric power consumption during that time. In general, daytime power rates are set higher than nighttime rates in order to suppress daytime power demand.

In such a situation, the conventional elevator control device consumes power in synchronization with the operation of the elevator. Conventionally, elevator operation is stopped during the peak time of power demand to reduce power consumption,
Since it was not possible to operate the elevator only in the nighttime period when the electricity rate is low, a relatively high operating power cost has been required.

The present invention has been made to solve the problems of the prior art, and aims at leveling or effectively utilizing the power consumption associated with the operation of an elevator.
That is, the first invention aims at selecting an optimum power supply source, the second invention aims at selecting an operation method corresponding to the power of the power supply source, and
It is an object of the present invention to perform an elevator operation according to the remaining charge amount of the electric power stored in the power storage device, and to select an operation method that matches the remaining power of the limited power supply source.

According to the fourth aspect of the present invention, the power-saving operation is performed in a timely manner according to the time obtained as a result of the learning by the learning function unit of the elevator apparatus, and an appropriate selection timing for switching the power supply source is predicted. The purpose is to do.

Finally, in the fifth invention, efficient management of elevator operation is performed by collectively instructing and managing a plurality of elevator devices by one management device, and individual power supply sources of the plurality of elevators are controlled. To optimize the choice of power supply as a whole.

[0020]

According to the present invention, there is provided an elevator apparatus comprising: an electric motor for rotating a hoist; an AC power supply as a power supply source for the electric motor; and an AC power supply for driving the AC power supply or the electric motor. A power storage device for storing regenerative power generated at the time of power generation, and a switching control unit that switches, depending on time, whether power to be supplied to the electric motor is obtained from the AC power supply or from the power storage device.

An elevator apparatus according to a second aspect of the present invention includes a drive control unit for controlling an operation mode of the elevator by the hoist, and the drive control unit is configured to control the operation mode according to the switching by the switching control unit. The operation mode is switched.

According to a third aspect of the present invention, there is provided an elevator apparatus having a storage remaining amount detecting device for detecting a remaining amount of power stored in the power storage device, wherein the drive control unit is configured to control the electric motor by the switching control unit. When the power to be supplied to the power storage device is obtained from the power storage device, the operation mode is switched according to the detection result by the storage remaining amount detection device.

According to a fourth aspect of the present invention, there is provided the elevator apparatus, comprising: a storage unit storing a time at which the switching by the switching control unit is performed; and a learning function unit for learning an operation operation of the elevator apparatus. The time stored in the storage unit is changed according to a learning result of the unit.

According to a fifth aspect of the present invention, there is provided an elevator apparatus, comprising: an AC power supply, a power storage device for storing power, a motor for rotating a hoist, and a power storage device for obtaining power supplied to the motor from the AC power source. A plurality of elevator devices having a switching control unit that switches between obtaining from, and a management device that manages the plurality of elevator devices,
The switching control unit of each of the plurality of elevator devices switches between obtaining power supplied to the electric motor from the AC power source and obtaining power from the power storage device in response to a command from the management device.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a block diagram of an elevator control device according to the present invention. The configuration and operation of FIG. 1 will be described. FIG.
Reference numeral 1 denotes a three-phase AC power supply, which is a commercial power supply for an elevator control device.

2 is an electric motor (motor) such as an induction motor, 3 is a hoist, 4 is a rope, 5 is a car, 6
Is a counterweight, 7 is an encoder, 8 is a drive control unit, 11 is a converter circuit, 12 is a current detection device, 13 is an inverter control circuit, 14 is a gate drive circuit, 15 is an inverter circuit, 16 is a regenerative resistor, 17 is Regenerative resistance control circuit, 1
Reference numeral 8 denotes a capacitor, reference numeral 20 denotes a power storage device including a battery or the like, and reference numeral 21 denotes a charging / discharging circuit for charging / discharging the power storage device 20.

Reference numeral 30 denotes a changeover switch for switching the power supply source. Note that the converter circuit 11 may be formed of a switching element, and the function of the changeover switch may be realized by interrupting the switching. Reference numeral 31 denotes a switching determination control unit that determines a time at which the power supply source of the elevator operation is switched between the commercial power supply 1 and the power storage device 20, and sends a switching command to the charge / discharge circuit 21 at that time. The switching determination control unit 31 is composed of a general microprocessor and a program.

Reference numeral 32 denotes a data table preset in a storage unit such as a memory of the elevator control device, in which a time and a time zone for performing an elevator operation by allocating a power supply source to the power storage device 20 are set and registered. It is power storage device operation time schedule table data.

Reference numeral 33 denotes a learning function unit in the elevator control device used in the elevator group management device or the like, which is a function unit for learning the movement of the elevator from daily operation by learning. Reference numeral 34 denotes a clock built in the elevator control device.

Reference numeral 35 denotes a speed table indicating whether the speed mode of the elevator operation is the low-speed running or the standard running mode. The speed table 35 is stored in a memory in the control device of the elevator, and in the case of the traveling operation in the low-speed mode in which the operation of the elevator is performed with power saving, data indicating the low-speed operation, for example, “T”; Data indicating the standard operation mode, for example, “H” is written by the switching determination control unit 31.

The switching determination control unit 31 constantly reads the time data in the power storage device operation time schedule table data 32, and determines that the time data indicates that the power supply source is switched to the power storage device 20 when the low-speed operation is performed. Mode "T"
At the time when the power supply source is returned to the commercial power supply 1, "H" of the standard operation mode is written in the speed table 35.

Next, the operation will be described with reference to the operation flowchart of the elevator control device of FIG. First, in the elevator control device, the switching determination control unit 31 of FIG. In step 201, the switching determination control unit 31 reads out the current time data by reading the time data of the clock 34 built in the elevator control device, and extracts the current time data and the power storage device operation time schedule table data 32 If the time zone including the time data including the time data that matches the current time data is found in the power storage device operation schedule table data 32 by comparing the time data one by one in order, the switching determination control unit 31 Shifts the operation to the next step 202. In step 202, the switching determination control section 31 writes the low-speed operation mode instruction data "T" to the speed table 35 at the time when the current time data comes. Thereafter, the switching determination control unit 31 moves the operation to the next step 203.

If the current time data of the clock 34 does not correspond to any of the time / time zone data in the power storage device operation time schedule table data 32 at step 201, the switching judgment control unit 31 Shifts the operation to the next step 204. In step 204, the switching determination control unit 31 writes, in the speed table 35, instruction data “H” of the standard operation mode for performing the traveling operation at the standard speed. Thereafter, the switching determination control unit 31 moves the operation to the next step 205.

In step 201, the time data in the power storage device operation time schedule table data 32 in the elevator control device memory is stored in a time zone during which power demand is concentrated, such as daytime, that is, a time zone when power demand is large. Data, which may be set in advance by humans,
In addition, the learning function unit 33 of the group management device in the elevator control device can grasp the time period of high power demand by the learning function from the daily operation operation of the elevator movement. The current time data itself may be set in the power storage device operation time schedule table data 32 by the switching determination control unit 31 receiving it from the learning function unit 33 of the group management device.

Next, at step 203, the switching determination control section 31 sends a switching instruction to the charging / discharging circuit 21 so that the power supply source is the power storage device 20. After that, the switching determination control unit 31 transfers the control to the next step 301.

On the other hand, in step 205, the switching determination control section 31 sends a switching instruction to the charging / discharging circuit 21 so that the power supply source is the commercial power supply 1. Thereafter, the switching determination control section 31 transfers the control to the next step 302.

According to the above, for example, at a time when the power consumption is extremely large in the daytime in summer, the switching judgment control unit 31 sets the appropriate time for switching the power supply source so that the power is supplied from the power storage device 20. It is possible to select from the power storage device operation time schedule table data 32 registered in the memory of the elevator control device, and to transmit a power supply source switching command to the charge / discharge circuit 21 at the appropriate time. This is now possible.

Next, in step 301, the charge / discharge circuit 2
1 operates, and the charging / discharging circuit 21 operates the changeover switch 30 in a direction of disconnecting (opening) the power supply source of the elevator control device from the commercial power supply 1 to change the power supply source of the elevator control device to the power storage device. At the same time as switching to 20, the commercial power supply 1 is disconnected from the elevator control device.
After that, the charge / discharge circuit 21 extracts power from the power storage device 20 and supplies power to the inverter circuit 15. Thereby, the motor of the electric motor 2 is driven by the electric power, and the hoisting machine 3 rotates, so that the car 5 and the counterweight 6 travel up and down in opposite directions, and the elevator operation is performed. That is, the electric power of the electric power
To drive the elevator. Next, the charging / discharging circuit 21 moves the operation to step 401.

On the other hand, in step 302, the charge / discharge circuit 2
1 performs the operation, and the charging / discharging circuit 21
0 is connected to the commercial power supply 1, and the power supply source of the elevator control device is switched to the commercial power supply 1. Thereafter, the charge / discharge circuit 21 controls connection with the inverter circuit 15 so that the power storage device 20 can be charged with power. Next, the charging / discharging circuit 21 moves the operation to step 401.

Next, at step 401, the drive control section 8 performs an operation. The drive control unit 8 controls the speed table 3
By reading the data of No. 5 at all times, if this data is the instruction data “T” of the low-speed operation mode, the next operation proceeds to Step 402. If the data is the instruction data "H" of the standard operation mode, the next operation is moved to step 403.

Next, at step 402, the drive control section 8 sends an instruction to the inverter control circuit 13 to perform low-speed operation. Next, at step 403, the drive control unit 8
Sends an instruction to the inverter control circuit 13 to perform the standard operation.

As described above, by reading the speed mode 35, the drive control unit 8 sends a speed command corresponding to the speed mode instructed by the switching determination control unit 31 to the inverter control circuit 13 and receives the instruction. Inverter control circuit 13 includes gate drive circuit 14 and inverter circuit 1
5, the electric motor 2 is driven, and the elevator operation in the speed mode is performed. For example, if the instruction is a low-speed mode, the elevator can be operated at a low speed.

With the above configuration, even when the power supply source is either the commercial power supply 1 or the power storage device 20, when the elevator is decelerated, or when the car 5 is driven down to the full capacity, etc. The driving of the motor 2 shifts to the rotation on the generator side from the balance of gravity between the car 5 and the counterweight 6, and the speed energy of this rotation causes the motor 2 to generate power. The charging / discharging circuit 21 takes in the regenerated power as DC power and controls the output to the power storage device 20 side, so that the regenerative power can be charged to the power storage device 20 as power.

The regenerative electric power generated from the motor 2 is
Since all of the power is charged power to the power storage device 20, the heat can be stored in the power storage device 20 without being consumed as heat energy by the regenerative resistor 16 through the regenerative resistor control circuit 17, so that it is more wasteful than the conventional configuration. Elevator operation can be performed without power.

Further, according to the above configuration, a switching command issued by the switching determination control unit 31 transmits a command to the charging / discharging circuit 21 to select a power supply source to be consumed in elevator operation and to supply a power to the power storage device 20. This means that charging can be appropriately performed when necessary.

As described above, the switching time is determined in accordance with the magnitude of the power demand, and the switching determination control unit 31 can send a switching command corresponding to the switching time to the charging / discharging circuit 21.

As described above, according to the present invention, since the power of the power storage device 20 is used only during the required time zone, all the power for elevator operation in the whole daytime time zone is supplied only from the power storage device 20. Without having to continue, the power storage device 20 does not require a large-capacity expensive battery, can be set to a storage device with a moderately suppressed storage capacity, and can be configured relatively cheaply as an elevator control device. is there.

It is to be noted that the time zone during which power demand is concentrated, such as during the daytime, is divided into a number of fine time zones from what time to what time, so that the power storage device operation time schedule table data stored in the memory of the elevator control device in advance. 32
The time data for the determination may be registered and set in advance, and may be used as the determination data of the switching time.

With the above configuration, the switching determination control unit 31
Can be created as command data by writing the low-speed operation mode instruction to the drive control unit 8 to reduce the operation speed of the elevator to the speed mode 35 at the same time as instructing the power supply from the power storage device 20. This allows the power storage device 20 to operate during operation by the power storage device 20.
, The power consumption of the battery of the power storage device 20 can be extended.

In the example of the first embodiment, the converter circuit 11 is constituted by a diode.
When a switching element such as a power transistor is used, power can be returned to the commercial power supply 1 side.
It is possible to control the electric power with a higher degree of freedom, and to operate the elevator with less expensive electric power.

As described above, according to the present invention, a time zone in which the electricity rate is low and an expensive time zone are appropriately determined, and in the expensive time zone, the electric power of the power storage device is used without using the commercial power supply. In an inexpensive time zone, it is possible to implement an effect that the regenerative power generated by operation using a commercial power supply can be stored in the power storage device.

In addition, the environmental characteristics of the operating status of the elevator depending on the location conditions of the building, the social purpose of the building, people entering and exiting the building, etc., when the electricity rate is low and high. Is registered in advance in the memory of the grabbing elevator control device as a schedule by the learning function of the elevator group management device, so that it can be divided and managed in a fine time zone. As a result, the power supply source can be frequently switched to a commercial power supply or a power storage device, so that elevator operation using the power storage device as a supply source for a long time can be avoided, and the capacity of the power storage device can be increased. Is unnecessary, and it is possible to provide an inexpensive elevator apparatus having no large-capacity expensive power storage device.

Further, the request for reducing the power consumption does not always occur at a fixed time, and the operation of the elevator utilizing the power storage device is adjusted according to the day, month, day of the week, time and the like when the power saving request is made. Is performed, it is possible to obtain an effect that the power consumption of the elevator operation can be reduced.

Embodiment 2 FIG. 3 is a system configuration diagram according to the second embodiment. Reference numeral 500 denotes a control center including a personal computer and a network. In the second embodiment, the control center is an example of a management device that manages a plurality of elevator devices. The control center 500 is connected to the elevator control device 5 via a general telephone line 510.
Connected to 02.

The elevator apparatus 520 includes an elevator car 5, an elevator main body 523 composed of a counterweight 6, an electric motor 2, and a hoisting machine 3, and a drive control section for driving and controlling the elevator main body 523. 8, a switching determination control unit 31 that switches and controls a power supply source, and an elevator communication unit 521 that includes a modem connected to the telephone line 510 to perform communication, and can communicate with the control center 500. ing.

The second embodiment particularly describes the function of the elevator communication section 521, and the other elevator control functions (elevator device 520) are exactly the same as those of the first embodiment. Here, the description is omitted.

In the system configured as described above, when the control center receives a power saving operation request, the telephone line 5
It is possible to instruct the plurality of elevator devices 520 to control the switching of the power supply source via 10, and to perform the elevator operation using the power storage device 20 as the power source.
This also makes it possible to simultaneously instruct the elevator operation in the speed mode by the low speed traveling.

Thus, it is possible to collectively instruct from the center without having to input settings for power saving operation for each elevator. As a result, each elevator device 520 is in accordance with Embodiment 1 described above.
Can be performed. In this example, the power supply source is switched by a command from the control center.However, in the case where a plurality of elevators in the same building are controlled by the group management device, the same applies when the switching is performed by the command from the group management control device. It works.

Embodiment 3 FIG. 4 is an operation flowchart of the elevator control device that changes the operation mode according to the remaining battery charge (accumulated remaining charge) according to the third embodiment.

The remaining charge amount (remaining charge) of the battery of the power storage device 20 of the elevator control device is determined by connecting a storage remaining amount detecting device to the power storage device 20.
For example, the terminal voltage of the (battery) can be always grasped by measuring the terminal voltage or the like. The data of the measurement result can always be written and stored in a certain memory in the elevator control device by the remaining storage amount detecting device.

The third embodiment particularly describes the function of the invention accompanying the detection of the remaining charge of the battery (remaining charge) of the power storage device 20, and other control functions of the elevator. Are the same as those in the first embodiment described above, and a configuration diagram relating to the detection and a description thereof will be omitted.

Here, the operation of FIG. 4 will be described. Step 6
Operation steps 01 to 603 are the same as those described in the first embodiment, and are operation steps for switching the power supply source depending on the time zone of the power demand.

Step 610 is a determination step which is performed when the power storage device 20 is used as a power supply source. The switching determination control unit 31 determines whether or not the memory data storing the remaining battery charge value of the power storage device 20 is stored. By constantly reading, if it is larger than a certain value, the operation moves to step 612. If it is smaller than a certain value, the operation goes to step 612.
Move the operation to 11.

In step 611, the switching judgment control unit 31
However, the driving mode is instructed to the drive control unit 8 in the same manner as in the first embodiment. On the other hand, in step 612, the switching determination control section 31 instructs the drive control section 8 to operate in the standard traveling mode in the same manner as in the first embodiment.

Thus, when the remaining charge of the battery is low, the elevator can be operated at a low speed, and by selecting an operation mode with low power consumption, the power saving operation of the elevator can be performed. When the remaining charge is low, the operation using the power storage device may be stopped instead of the low-speed operation, and the operation may be performed using a commercial power supply.

As described above, the provision of the storage remaining amount detection device enables the power saving operation even if a relatively small-capacity and inexpensive power storage device 20 (battery) is used, thereby achieving the above object.

[0067]

Since the present invention is configured as described above, it has the following effects. The elevator apparatus according to the first aspect of the present invention includes an electric motor that rotationally drives a hoist, an AC power supply as a power supply source for the electric motor, and electric power that accumulates regenerative electric power generated when the AC power supply or the electric motor is driven. Since it has a storage device and a switching control unit that switches between obtaining the power supplied to the electric motor from the AC power supply and obtaining the power from the power storage device according to time, elevator operation at a low electricity rate becomes possible. .

An elevator apparatus according to a second aspect of the present invention has a drive control unit for controlling an operation mode of the elevator by the hoist, and the drive control unit is configured to control the operation mode according to the switching by the switching control unit. Since the operation mode is switched, it is possible to perform a power-saving elevator operation accompanying the low-speed operation.

According to a third aspect of the present invention, there is provided an elevator apparatus having a storage remaining amount detecting device for detecting a remaining amount of electric power stored in the power storage device, wherein the drive control unit controls the electric motor by the switching control unit. When the power to be supplied to the power storage device is obtained from the power storage device, the operation mode is switched according to the detection result of the storage remaining amount detection device, so that the elevator operation can be performed in a power saving manner according to the remaining charge and the capacity can be reduced Can provide an inexpensive elevator device accompanying the mounting of the battery.

An elevator apparatus according to a fourth aspect of the present invention has a storage unit in which a time at which switching is performed by the switching control unit is stored, and a learning function unit that learns the operation of the elevator apparatus. Since the time stored in the storage unit can be changed according to the learning result of the unit, the power saving operation according to the time can be appropriately performed, the power rate can be reduced, and the power storage device can be reduced in size due to the reduced capacity. It can be implemented and provided at the same time.

According to a fifth aspect of the present invention, there is provided an elevator apparatus comprising: an AC power supply; a power storage device for storing power; a motor for driving the hoist to rotate; and whether the power supplied to the motor is obtained from the AC power supply. A plurality of elevator devices having a switching control unit that switches between obtaining from, and a management device that manages the plurality of elevator devices,
The switching control unit of the plurality of elevator devices can switch between obtaining the power supplied to the electric motor from the AC power source or obtaining the power from the power storage device according to a command from the management device. Work associated with each switching can be reduced, and efficient operation management can be performed by collectively instructing from the management device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an elevator control device according to a first embodiment of the present invention.

FIG. 2 is an operation flowchart of the elevator control device according to the first embodiment of the present invention.

FIG. 3 is a configuration example of a center system according to a second embodiment of the present invention.

FIG. 4 is an operation flowchart of an elevator control device according to Embodiment 3 of the present invention.

FIG. 5 is a block diagram of a conventional elevator control device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 commercial power supply (three-phase AC power supply), 2 electric motor (motor) such as induction motor, 3 hoisting machine, 8 drive control unit, 11 rectifier (converter circuit) composed of diodes, etc., 13 inverter control circuit, 15 Inverter circuit, 20 power storage device (battery), 21 charge / discharge circuit, 30 changeover switch, 31 changeover determination control unit,
32 power storage device operation time schedule table, 33 learning function unit of group management device, 34 clock, 35 speed mode data table.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoshi Suzuki 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F-term (reference) 3F002 AA10 BB08 CA10 EA08 GA03 GA07

Claims (5)

[Claims] A motor for rotating and driving the hoist; an AC power supply as a power supply source for the motor; a power storage device for storing regenerative power generated when the AC power supply or the motor is driven; An elevator apparatus, comprising: a switching control unit that switches, depending on time, whether power to be supplied to an electric motor is obtained from the AC power supply or from the power storage device. 2. A drive control unit for controlling an operation mode of an elevator, wherein the drive control unit switches the operation mode in accordance with the switching by the switching control unit. The elevator device as described. 3. A storage remaining amount detection device for detecting a remaining amount of power stored in the power storage device, wherein the drive control unit stores the power supplied to the electric motor by the switching control unit in the power storage unit. The elevator apparatus according to claim 1, wherein when obtaining from the apparatus, the operation mode is switched according to a detection result by the storage remaining amount detection apparatus. 4. A storage unit in which a time at which switching is performed by the switching control unit is stored, and a learning function unit that learns an operation operation of the elevator apparatus, and the storage unit is configured to store the operation result based on a learning result obtained by the learning function unit. The elevator device according to claim 1, wherein the time stored in the elevator is changed. 5. An AC power source, a power storage device for storing power, a motor for driving a hoist to rotate, and a switching control unit for switching between obtaining power supplied to the motor from the AC power source and the power storage device. And a management device that manages the plurality of elevator devices, wherein the switching control unit of the plurality of elevator devices supplies the electric motor to the motor in response to a command from the management device. An elevator system for switching whether to obtain power from the AC power supply or from the power storage device.