KR20140018986A - Elevator control device - Google Patents

Abstract

The car 2 and the counterweight 5 are formed in a roll type, and have a motor 11 for elevating the car 2, and rectifying the AC power supply 20 with the regenerative function built-in converter 32. The elevator 36 drives the motor 11 and converts the regenerative power generated by the motor 11 into the AC power source 20 through the inverter 36 and the converter 32 with built-in regenerative function. The control device WHEREIN: The converter 32 is electrically opened by the switch 22 from the AC power supply 20 by the switch 22 at the time of a power outage, and the converter 32 is based on the regenerative electric power produced | generated by the running of the cage | basket | car 2. And a control unit 50 for driving the pump pump 200 electrically connected thereto.

Description

Elevator control device {ELEVATOR CONTROL DEVICE}

The present invention relates to a control device of an elevator.

As a conventional elevator control apparatus, as shown in the following patent document 1, the control apparatus using the regenerative converter is known.

The control device is an elevator control device having a variable voltage variable frequency inverter and an emergency generator having a retro converter and a regenerative converter. A regenerative power consumption circuit is provided on the direct current side of the inverter to provide an emergency generator. In operation of the elevator by the regenerative converter, the regenerative converter is blocked and the regenerative power consumption circuit is operated to consume the regenerative power.

According to the control device, the regenerative power is returned to the power supply side during operation of the elevator by the normal power supply, so the power consumption is reduced. Since the regenerative power is consumed by the DC side during operation of the elevator by the emergency power supply, the regenerative power that is not cumbersome to process in the emergency generator does not flow and the voltage notch does not occur. can do.

[Patent Document 1] Japanese Unexamined Patent Publication No. 59-149781

However, in the control device of the elevator, the regenerative power generated by the motor remains to be returned to the power source using the regenerative converter. On the other hand, in consideration of the fact that the regenerative power generated from the elevator at the time of power failure did not have a function as a power supply source, the inventor temporarily functions the elevator as a power generation facility at the time of power failure and uses the regenerative power as a power supply source. It was found out to drive electrical equipment other than the elevator.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator control apparatus having a function as a power supply source by using the regenerative power during power failure.

The control device of an elevator according to the first invention is formed in a car and a balanced system, and has a motor for lifting and lowering the car. An elevator control apparatus which drives the motor and converts regenerative power generated by the motor into the alternating current power through the inverter and the regenerative means, wherein the regenerative means and the rectifying means convert the regenerative means and the rectifying means at the time of power failure. After electrically opening from the opening and closing means to drive the electrical equipment electrically connected to the regenerative means with regenerative power generated by the running of the car.

According to the control device of such an elevator, the electrical device which is electrically connected to the regenerative means by regenerative power generated by the driving of the car after the opening and closing means electrically opens the regenerative means and the rectifying means from the AC power supply in case of power failure. To drive. Therefore, the elevator can function as a power supply source at the time of power failure and can drive the electric machine.

The control apparatus of the elevator which concerns on 2nd invention is based on the load detection means which detects the load in a cage, the power consumption setting means which sets the power consumption value of an electric machine, and based on the detected load and the power consumption value of an electric machine. It is preferable to include a speed adjusting means for adjusting the speed command of the inverter for driving the motor.

As a result, the speed adjusting means adjusts the speed command of the inverter that drives the motor based on the detected load and the power consumption value of the electric equipment. Therefore, the generated power that can be generated from the elevator can be adjusted by adjusting the speed of the car according to the power consumption of the electric machine and the load in the car. Since the power consumption and the generated power of the electric device can be adjusted, the voltage fluctuation of the power supply to the electric device can be suppressed.

The control apparatus of the elevator which concerns on 3rd invention is the power detection means which detects the regenerative power supplied to an electrical equipment, the power consumption setting means which sets the power consumption value of an electrical equipment, the detected regenerative power, and the said electrical equipment Preferably, speed adjusting means for adjusting the speed command of the inverter for driving the motor based on the power consumption value of.

Thereby, the speed adjusting means can adjust the generated power that can be generated from the elevator by adjusting the speed command of the inverter for driving the motor based on the detected regenerative power and the power consumption value of the electric device. Since the power consumption and the generated power of the electric device can be adjusted, the voltage fluctuation of the power supply to the electric device can be suppressed.

The control apparatus of the elevator which concerns on 4th invention is equipped with the electrical storage means provided so that electric power can be stored in the direct current | flow side of a rectifying means, and a control means accumulates the regenerative electric power produced by the running of a car in the said electrical storage means, It is preferable to drive the electric machine through the regenerative means based on the electric power from the power storage means.

As a result, the control means accumulates the regenerative power generated by the running of the car in the power storage means, and then drives the electric machine through the regenerative means based on the power from the power storage means. Power can be supplied to electrical equipment without depending on the state.

It is preferable that the control apparatus of the elevator which concerns on 5th invention is provided with the display means which displays a regenerative electric power value and the duration of the said regenerative electric power.

Thereby, since the power supply capability at the time of using an elevator as an emergency power supply at the time of power failure is displayed, the usability of the said emergency power supply can be improved.

It is preferable that the control apparatus of the elevator which concerns on 6th invention has a plurality of elevators, and is provided with the control means which supplies the regenerative electric power for every said elevator to an electrical equipment.

Thereby, since an electric machine can be driven based on the regenerative electric power produced | generated from the some elevator, the capacity | capacitance of the electric machine which can be driven can be expanded.

According to the present invention, it is possible to obtain an elevator control apparatus capable of driving an electric machine by using the regenerative power generated in the elevator by functioning the elevator as a power supply source during a power failure.

BRIEF DESCRIPTION OF THE DRAWINGS The whole figure of the control apparatus of the elevator which shows one Embodiment of this invention.
FIG. 2 is a flowchart showing the operation of the control device of the elevator of FIG. 1.
3 is a time chart showing the operation of the control device of the elevator of FIG.
4 is a flowchart showing the operation of the elevator control apparatus according to another embodiment of the present invention.
5 is a time chart showing the operation of the elevator control apparatus according to another embodiment of the present invention.

Embodiment 1

An embodiment of the present invention will be described with reference to FIG. 1. BRIEF DESCRIPTION OF THE DRAWINGS The whole figure of the control apparatus of the elevator which shows one Embodiment of this invention.

1, the 1st elevator 1 is connected to the three-phase alternating current power supply 20 via the switch 22 as an opening / closing means which can be opened and closed electrically. Similarly, a pump pump 200 serving as an electric device for storing tap water on the roof of a building, and a second elevator 100 formed in the same manner as the first elevator 1 are connected to an AC power source through the switch 22. 20).

The elevator (1) has a hoisting machine (7) for lifting the cage (2) by lifting the rope (3) in the form of a balance weight (5) through a rope (3) on the cage (2). have. A brake 9 and a motor 11 are mounted on the hoist 7.

The control device of the elevator has a load detector 13 as a load detection means for detecting the riding load in the car 2, rectifies the AC power supply 20 to obtain a DC power, and converts the DC power into AC power. The power converter 30 drives the motor 11 at a variable speed with a variable frequency. The direct current bus 34 of the power converter 30 has a power accumulator 40 as a power storage means that accumulates and emits electric power.

In addition, the control device has a control section 50 for generating a command signal for controlling the power converter 30 and receiving a load detection signal from the load detector 13.

The control part 50 receives the power failure detection signal from the power supply monitor 60 as a power detection means for detecting a power failure, and sets the power to be generated when the elevator 1 functions as a generator during a power failure. It is formed so as to receive the power command signal from the setter 70. The controller 50 is formed to transmit a signal for displaying a power value or the like to the display 80, and has a function as a control means and a speed adjusting means.

The power converter 30 includes rectifier means for rectifying the AC power supply 20, converting DC power into AC power, and supplying power to the pump 200, and a converter 32 having a regenerative function as a regenerative means. And a capacitor 33 for smoothing the pulsated output voltage of the converter 32.

In addition, the power converter 30 converts the inverter 36 which drives the motor 11 at variable speed and the regenerative power generated by the motor 11 into a transistor through the DC bus 34 which is the output of the converter 32. It has the regenerative resistor circuit 38 which controls and consumes with a resistor.

The power accumulator 40 controls the charge / discharge of the power storage unit 41 and the power storage unit 41 that store electric power formed of lead storage batteries or nickel hydride batteries, and the voltage of the power storage unit 41. And a charge / discharge unit 43 made of a DC-DC converter capable of boosting the voltage.

In addition, the control unit 50, the power supply monitoring unit 60, the load detector 13, and the like which have to be operated at the time of power failure have secured the power supply at the time of power failure by a battery not shown.

Next, operation | movement in normal operation of the control apparatus of the elevator comprised as mentioned above is demonstrated.

<At the time of normal driving>

Now, in FIG. 1, when the switch 22 is in the closed state, when the passengers get on the car 2 in a state near the rated and start the ascending operation, the motor 11 operates while consuming power. It is backing. At this time, the controller 50 controls the charge / discharge unit 43 by starting the elevator 1 to start discharging from the power storage unit 41 to control the voltage of the DC bus line 34 to the specified voltage.

On the other hand, when the electric power of the elevator 1 is insufficient by the discharge power from the electric power accumulating part 41, both the electric power from the electric power accumulating part 41 and the electric power supplied from the commercial power source which are output from the converter 32 are used. Procure. Thus, energy saving is realized by accumulating regenerative power in the power accumulator 40 and reusing the power.

Next, in the closed state of the switch 22, when the cage | basket | car 2 starts an ascending operation with no load, it will be the regenerative operation which returns the speed energy of the cage | basket | car 2 to electric power, and the direct current bus 34 This regenerative power rises the voltage of. For example, the controller 50 controls the charge / discharge unit 43 to charge the regenerative power to the power storage unit 41 when the voltage of the DC bus 34 reaches a predetermined voltage. As another control means, the regenerative power 43 is controlled while the regenerative power is monitored to charge the regenerative power into the electric power storage part 41.

Next, operation | movement operation | movement at the time of blackout of the control apparatus of the elevator comprised as mentioned above is demonstrated.

<At the time of power failure>

As shown in FIG. 1, when the electric power cannot be supplied from the AC power supply 20 due to a power failure or the like, there may be a case where the pump pump 200 or the elevator 100 is temporarily operated. For example, it is necessary to use tap water in the upper floor of the collective house during a power failure, and the pump pump 200 may be operated only for a short time.

In addition, when the wheelchair user is waiting for evacuation from the upper floor, it is necessary to temporarily drive the elevator 1 to evacuate the wheelchair user. In such a case, there is also a means of temporarily transporting the emergency generator from another place and using it, but it is difficult to cope with the case where the power is to be supplied immediately. Here, electric power is supplied to the pump pump 200 using the power generation function of the elevator 1 as follows. In addition, it is preferable that the electric device driven by using the power generation function of the elevator 1 can withstand a certain voltage fluctuation like the pump pump 200.

First, as shown in FIG. 2, a user opens the switch 22, isolate | separates the elevator 1 etc. from the AC power supply 20 (step S101), and consumes the power consumption value for operating the pump pump 200. FIG. It sets to the electric power setter 70 (step S103). The control part 50 sets the traveling speed of the cage | basket | car 2 based on the set power consumption value.

At this time, the traveling speed is generally obtained by dividing the power consumption value by the mass difference between the car 2 and the balance weight 3. This power consumption utilizes the set power consumption in which the mechanical loss for lifting and lowering and the electrical loss of the motor 11 or the power converter 30 are added. In addition, although it is assumed that the passenger-car 2 does not exist in the passenger car 2 normally, when the cargo etc. are loaded in the car 2, the inside of the car 2 detected by the load detector 13 was carried out. It is necessary to determine the mass difference between the car 2 side and the balance weight 5 side by correcting the load.

Next, the control part 50 starts the motor 11 as a generator (step S105). When the car 2 is driven in the regenerative operation direction based on the set speed, the speed of the car 2 gradually rises as shown in Fig. 3 (a), and the motor 11 acts as a generator, and Fig. 3 (b). To generate the regenerative power PR. The control part 50 displays the power detected by the power supply monitoring part 60 on the display 80 (step S107). The user checks whether the power detected by the power supply monitoring unit 60 has reached the set value (step S109). As shown in Fig. 3 (d), since the pump pump 200 cannot be used for the dotted line portion which does not reach the set power, it is confirmed that the set power is reached. Then, when the regenerative power reaches the set power value, the controller 50 operates the converter 32 of the power converter 30, supplies power to the pump pump 200, and operates it (step S111). When the cage | basket | car 2 approaches a terminal floor, the cage | basket | car 2 is decelerated. Accompanying this, the power supply monitoring unit 60 detects that the generated electric power from the motor 11 has decreased (step S113). The control part 50 receives this detection, and complete | finishes the operation of the pump pump 200.

In step S109, the power of the dotted line shown in Fig. 3 (d) in which the power detected by the power supply monitoring unit 60 does not reach the set value is consumed by the resistance of the regenerative resistor circuit 38.

Moreover, in the electric device which can be driven even if a voltage rises gradually, the electric power of the dotted line shown in FIG.3 (d) can be added and driven.

The control apparatus of the elevator of the said embodiment is provided with the cage | basket | car 2 and the counterweight 5 by the roll system, and has the motor 11 which raises and lowers the cage | basket | car 2, The three-phase alternating current power supply 20 ) Is rectified by the regenerative function built-in converter 32, the motor is driven by the inverter 36, and the regenerative power generated from the motor 11 is converted into the inverter 36 and the regenerative function built-in converter ( In the elevator control apparatus which converts into the alternating current power supply 20 via 32, after the converter 32 is electrically opened by the switch 22 from the alternating current power supply 20 at the time of a power failure, the cage | basket | car 2 is opened. It is provided with the control part 50 which drives the pump pump 200 electrically connected with the converter 32 with the regenerative power produced | generated by the driving | running | working of the.

According to the control device of the elevator, after the switch 22 electrically opens the converter 32 from the AC power source 20 at the time of power failure, the converter 32 is the regenerative power generated by the running of the car 2. And drives the pump pump 200 electrically connected thereto. Therefore, the elevator 1 can function as a power supply source at the time of power failure, and can drive the pump pump 200.

Like the elevator control apparatus of the above embodiment, the motor 11 is driven based on the load detector 13 that detects the load in the car 2, and the detected load and the power consumption value of the pump 200. It is preferable to provide the control part 50 as a speed adjusting means which adjusts the speed command of the inverter 36 to make.

Thereby, the control part 50 adjusts the speed command of the inverter 36 which drives the motor 11 based on the load detected by the load detector 13, and the power consumption value of the pump pump 200. FIG. . Therefore, the generated power that can be generated in the elevator 1 can be adjusted by adjusting the speed of the car 2 in accordance with the power consumption of the pump 200 and the load in the car 2. Therefore, since the generated electric power from the elevator 1 can be adjusted according to the power consumption of the pump 200, the voltage fluctuation of the power supplied to the pump 200 can be suppressed.

Like the elevator control apparatus of the above embodiment, the motor is based on the power supply monitoring unit 60 that detects the regenerative power supplied to the pump pump 200, and the detected regenerative power and the power consumption values of the pump pump 200. It is preferable to provide the control part 50 which adjusts the speed command of the inverter 36 which drives (11).

Thereby, the control part 50 adjusts the speed command of the inverter 36 which drives the motor 11 based on the detected regenerative power and the power consumption value of the pump 200, and produces | generates in the elevator 1 It can adjust the generated power that can be. Therefore, the generated power from the elevator 1 can be adjusted according to the power consumption of the pump 200.

Embodiment 2 Fig.

In the first embodiment, the pump pump 200 is directly driven by using the regenerative power generated by the motor 11 at the time of power failure, but in the present embodiment, the regenerative power generated by the motor 11 is once stored in the power accumulator 40. ), The pump pump 200 is driven by the accumulated power of the power accumulator 40.

The control apparatus of the elevator which concerns on other embodiment of this invention is the same as that of the structure of Embodiment 1, and the operation is demonstrated as FIG. 4 and FIG. In FIG. 4, the same code | symbol as FIG. 2 shows the same operation | movement, and abbreviate | omits description.

The control device of the elevator executes steps S101 to S105 in the same manner as in the first embodiment. And after starting an elevator in step S105, the regenerative power produced | generated by the motor 11 is accumulate | stored in the power accumulator 40 via the inverter 36 as shown to FIG. 5 (a)-(c). (Step S209). The control unit 50 determines whether the running of the car 2 has stopped by the speed detector 12 (step S211), and if it determines that the car 2 has stopped, the control unit 50 determines from FIG. As shown in d), the pump pump 200 is operated from the power accumulator 40 via the regenerative built-in converter 32 (step S213), and then the operation of the pump pump 200 ends.

In addition, the control unit 50 monitors the power consumption caused by the start of the pump pump 200 by the power supply monitoring unit 60, and the charge / discharge unit 43 and the converter of the power accumulator 40 so as to have an appropriate generation power P _O. (32) may be controlled. Thereby, even if the user does not set the power consumption to the power consumption setter 70 or confirms the generated power from the elevator 1 with the indicator 80, it is possible to stably supply power to the pump pump 200. Can be.

In addition, when the cage | basket | car 2 travels | works with the indicator 80, for example, when the cage | basket | car 2 runs from the lowest floor to the uppermost floor without load, the amount of regenerative power which can be produced | generated, or the cage | basket | car 2 It is also possible to display the power and duration generated during this run.

In addition, the power and the duration may be calculated and displayed from the amount of power stored in the power accumulator 40. In this case, since the power supply capability at the time of using the elevator 1 as an emergency power supply device can be known, ease of use is improved.

In addition, a plurality of elevators 1 and 100 may be cooperated to perform regenerative operation, and the pump pump 200 may be operated using the sum of these as the generated electric power. In this case, it becomes possible to supply electric power larger than one elevator, and the pump pump 200 etc. which require large electric power can be temporarily operated even in the case of power failure.

The control apparatus of the elevator of the said embodiment is equipped with the power accumulator 40 provided in the direct current | flow side of the regenerative built-in converter 32 so that electric power can be stored, and the control part 50 is driven by the cage | basket | car 2 by running. After accumulating the generated regenerative power in the power accumulator 40, it is preferable to drive the pump pump 200 through the regenerative built-in converter 32 based on the power from the power accumulator 40.

As a result, the control unit 50 accumulates the regenerative power generated by the running of the car 2 in the electric power accumulator 40 and then regenerates the internal regenerative converter based on the electric power from the electric power accumulator 40. Since the pump pump 200 is driven through 32, power can be stably supplied to the pump pump 200 without depending on the load and the traveling state of the car 2.

The present invention can be applied to a control device of an elevator.

2 car compartments, 5 counterweights,
11 motors, 13 load detectors,
20 three-phase AC power, 22 switches,
Converter with 36 regenerative functions, 36 inverters,
50 control unit, 60 power monitoring unit,
80 indicators, 200 pumping pumps.

Claims (6)

The car and the balance weight are formed in a pulse system, and have a motor for elevating the car,
In an elevator control apparatus for rectifying AC power by rectifying means to drive the motor by an inverter, and converting regenerative power generated by the motor into the AC power through the inverter and regenerative means.
Control to electrically open the regenerative means and the rectifying means from the alternating current power source to the opening and closing means at the time of power failure, and to drive the electrical equipment electrically connected to the regenerative means with regenerative power generated by the running of the car. Way
Elevator control device comprising a. The method according to claim 1,
Load detection means for detecting a load in the car;
Power consumption setting means for setting a power consumption value of the electric device;
Speed adjusting means for adjusting a speed command of the inverter for driving the motor based on the detected load and the power consumption value;
Elevator control device comprising a. The method according to claim 1,
Power detection means for detecting regenerative power supplied to the electric device;
Power consumption setting means for setting a power consumption value of the electric device;
Speed adjusting means for adjusting a speed command of the inverter for driving the motor based on the detected regenerative power and the power consumption value;
Elevator control device comprising a. The method according to claim 1 or 2,
A power storage means provided on the direct current side of the rectifying means so as to store electric power;
The control means accumulates the regenerative power generated by the running of the car in the power storage means, and then drives the electric machine through the regenerative means based on the power from the power storage means.
Elevator control device, characterized in that. The method according to any one of claims 1 to 4,
Display means for displaying the regenerative power value and the duration of the regenerative power;
Elevator control device comprising a. The method according to any one of claims 1 to 5,
Has a plurality of elevators,
And a control means for supplying regenerative electric power for each elevator to the electric machine.

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