JP2003341947A - Elevator control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator control device capable of continuing an operation equivalent to a normal operation also during an electric power failure without impairing an energy saving function. <P>SOLUTION: This device is provided with a power storage device 10 for storing DC power, a charging/discharging control device 12 for controlling charging/discharging of the power storage device 10, a power conversion device 19 for converting DC power outputted from the power storage device 10 into AC power, an elevator electrical apparatus 17 supplied with DC power outputted from the power conversion device 19, and power source devices 13, 14 and 15. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy-saving type elevator control device to which a power storage device such as a secondary battery is applied, and more particularly to an elevator control device capable of automatic operation during a power failure.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a conventional elevator controller. In FIG. 3, 1 is 2 for example
Commercial power source for power of 50V three-phase AC, 2 is a converter for converting the three-phase AC power from the commercial power source 1 to DC, 3 is a DC bus for DC power, and 4 is DC power for desired AC power. It is an inverter that converts.

Reference numeral 5 is a drive device for vertically moving an elevator car (described later) 8, 6 is a regenerative resistor connected between both ends of the DC bus 3, and 7 is a regenerative resistor connected in series with the regenerative resistor 6. 8 is an elevator car (hereinafter simply referred to as "car") provided in the drive device 5, and 9 is a counterweight for canceling the weight of the car 8. Converter 2, DC bus 3, inverter 4, regenerative resistor 6 and regenerative resistor control circuit 7 are provided on the same control panel 100.

Reference numeral 10 is a power storage device (secondary battery) connected to the DC bus 3 for storing DC power, 11 is a charging / discharging device for charging / discharging the power storage device 10, and 12 is a charging / discharging device 1.
1 is a charging / discharging control device that controls charging / discharging of the electric power storage device 10 by controlling 1 of FIG. The charging / discharging device 11 and the charging / discharging control device 12 are provided on the power storage device panel 200 together with the power storage device 10.

An elevator control power supply unit 13 is connected to the commercial power supply 1, and is provided on the control panel 100 together with the converter 2, the DC bus 3, the inverter 4, the regenerative resistor 6 and the regenerative resistor control circuit 7 described above. ing.

Reference numeral 14 is a car control power supply, and 15 is a hall control power supply, which constitutes a power supply together with the elevator control power supply 13 and is connected to the commercial power supply 1. Reference numeral 16 is a commercial power supply for illumination composed of, for example, 100 V AC power, and 17 is an elevator electric device connected to the commercial power supply 16 (lights inside a basket, outlets inside a basket, exterior lighting, and the like described later).

The elevator counterweight 9 is set to a weight that balances when a person with an appropriate amount (less than the rated load) is on the car 8. Therefore, generally, in the case of raising and lowering the car 8 with no load, when the car 8 descends, it is in a "power running operation state" in which it operates while consuming electric power, and when the car 8 rises, speed energy is returned to electric power. "Regenerative operation state".

On the contrary, when the car 8 is lowered at the rated load, it is in the "regenerative operation state", and when it is raised, it is in the "power running operation state". In a typical elevator controller,
The regenerative electric power is converted into thermal energy by the regenerative resistor 6 and consumed by the regenerative resistor control circuit 7.

In the energy-saving type elevator control device to which the power storage device 10 (secondary battery) is applied as shown in FIG. 3, the power storage device 10 is generally a lead storage battery or a nickel hydride storage battery. In addition, the charging / discharging device 11
Is generally composed of a DC-DC converter, and the charging / discharging power of the charging / discharging device 11 is controlled by the charging / discharging control device 12.

Generally, in order to make the device compact and inexpensive, the number of secondary batteries in the power storage device 10 is suppressed, and the output voltage of the secondary battery is lower than the voltage of the DC bus 3. It is set to the voltage value. On the other hand, the voltage of the DC bus 3 is generally controlled to be near the voltage obtained by rectifying the commercial power supply 1 with the converter 2.

Therefore, when the secondary battery of the power storage device 10 is discharged, the bus-side output of the charging / discharging device 11 must be boosted to the voltage of the DC bus 3. Further, when the secondary battery of the power storage device 10 is being charged, the bus-side input of the charging / discharging device 11 needs to be boosted above the output voltage of the converter 2.

As a result, as described above, the DC-DC converter is adopted as the charging / discharging device 11, and the charging / discharging control device 12 uses the discharging gate and the charging gate of the charging / discharging device 11 (DC-DC converter). Control.

When electric power is regenerated from the motor of the drive unit 5, the voltage of the DC bus 3 rises due to the regenerated electric power.
At this time, when the voltage of the DC bus 3 becomes higher than the output power of the converter 2, the sending voltage is applied to the rectifying element of the converter 2 and the power supply from the commercial power supply 1 is stopped.

As described above, when the voltage of the DC bus 3 increases and the bus voltage reaches a predetermined voltage, a part of the regenerative power is precisely charged in the power storage device 10 by the control of the charge / discharge control device 12. It

On the other hand, in the powering operation, since the elevator drive unit 5 needs to supply electric power, the electric discharge from the electric power storage unit 10 is started at the start timing of the elevator, and the voltage of the DC bus bar 3 is regulated to a predetermined value. Control to voltage.

However, when the required power of the elevator is insufficient even by the discharge from the power storage device 10, both the power supplied from the power storage device 10 and the power supplied from the commercial power source 1 output from the converter 2 are supplied. Is covered by. In this way, energy saving is realized by accumulating the regenerated electric power in the electric power storage device 10 and reusing the accumulated electric power.

Further, conventionally, an elevator control device having an automatic landing function during a power outage for automatically landing the car 8 using a known battery or the like during a power outage of the commercial power source 1 (elevator) and a private power generator are provided. Elevator control devices and the like that have the automatic operation continuation function during a power failure that have been used have been proposed.

However, the conventional automatic landing function at the time of power failure can only prevent a trap accident in the car 8, and the private generator is not provided by the elevator alone, but the elevator is installed. It has to rely on the building and lacks practical versatility.

[0019]

Although the conventional elevator control device achieves energy saving by using the power storage device 10 as described above, in the event of a power failure of the elevator,
There is a problem that the electric power stored in the electric power storage device 10 cannot be effectively used.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to continue the operation equivalent to the normal operation at the time of power failure without impairing the energy saving type elevator function with the power storage device. The purpose is to obtain a possible elevator control device.

[0021]

An elevator control apparatus according to the present invention is a power storage apparatus for storing DC power, a charge / discharge control apparatus for controlling charging / discharging of the power storage apparatus, and an output from the power storage apparatus. It is provided with a power conversion device that converts direct-current power into alternating-current power, and an elevator electric device and a power supply device to which the alternating-current power output from the power conversion device is supplied.

Further, the elevator electric equipment of the elevator control device according to the present invention includes lighting in the elevator car, and the power supply device includes the elevator control power supply device, the car control power supply device, and the hall control power supply device.

Further, the elevator control device according to the present invention comprises at least a commercial power source related to power supply to the power supply device and a power failure detector for detecting a power failure of the commercial power source, and the power conversion device is a power failure detector. In response, power is supplied to the elevator electric equipment and the power supply device when the commercial power supply fails.

Further, the elevator control device according to the present invention includes a commercial power supply and a switching device inserted between the power conversion device and the elevator control device, and the switching device is AC power from the commercial power supply or a power storage device. It supplies only one of the AC power from the elevator controller.

In the elevator control device according to the present invention, the power conversion device and the switching device are provided on the device panel integrated with the power storage device and the charge / discharge control device.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the first embodiment of the present invention. The same components as those described above (see FIG. 3) are designated by the same reference numerals as those mentioned above or after the reference numeral "A". And detailed description is omitted.

In FIG. 1, 18 is a power storage device board 20.
A switching device provided at 0A and a power conversion device 19 connected to the switching device 18. Reference numeral 50 denotes a power failure detector provided on the control panel 100A, which inputs a power failure detection signal to the switching device 18 when the commercial power source 1 fails.

The switching device 18 performs a switching operation in response to the power failure detection signal from the power failure detector 50, and the elevator control power supply device 13, the car control power supply device 14, and the hall control power supply device 1 are operated.
The power supply source for the electric power supply system 5 and the elevator electric equipment 17 is switched from the commercial power supplies 1 and 16 to the electric power conversion device 19.

Similarly to the above, the DC bus 3 of the inverter 4
The power storage device 10 is connected to the power storage device 10 via a charge / discharge device 11 and a charge / discharge control device 12. Further, the power storage device 10 is connected to a power conversion device 19 and a switching device 18 via a charging / discharging device 11.

Commercial power supplies 1 and 16 are connected to the elevator control beach device 13, the car control power supply device 14, the hall control power supply device 15 and the elevator electric equipment 17 via a switching device 18.

In this case, the regenerative electric power of the elevator is stored in the electric power storage device 10 when the commercial power source 1 is normal, and the electric power stored in the electric power storage device 10 is regenerated to the lifting power of the car 8 during the power running operation of the elevator. We are using.

FIG. 2 is a block diagram showing in detail the switching device 18 in FIG. In FIG. 2, reference numeral 20 denotes an in-car light that is always provided in the car 8, and reference numerals 21 and 22 denote an in-car power outlet and an exterior light, which are optional devices, which constitute an elevator electric device 17.

The change-over device 18 is a change-over switch 23a-2 which connects the common terminal to one of the contacts during normal operation and during power failure.
3c. The common terminal of each of the changeover switches 23a to 23 is normally selected to be a normally-closed contact, and is switched to the blackout-side contact in response to a power failure detection signal.

In the changeover switch 23a, the contact on the normal side is connected to the commercial power supply 1, and the contact on the power failure side is the power converter 19.
, And the common terminal is connected to each of the power supply devices 13 to 15.

In the changeover switch 23b, the contact on the normal side is connected to the commercial power supply 16 and the contact on the power failure side is the power converter 1.
9 and the common terminal is connected to the in-car illumination 20.

In the changeover switch 23c, the contact on the normal side is connected to the commercial power supply 16, the contact on the power failure side is an off (cutoff) terminal, and the common terminal is the in-car outlet 21 and the external light 22 (depending on the necessity). Low optional equipment).

The power failure detector 50 generates a signal indicating the normal state or the power failure state of the commercial power source 1. Switching device 1
When a power failure detection signal is generated from the power failure detector 50, 8 switches the contact connection state from the normal side (normally closed state shown in FIG. 2) to the power failure side.

That is, when the commercial power source 1 is normal, the AC power from the commercial power sources 1 and 16 is the switching device 18.
Via the normally closed contact sides of the changeover switches 23a, 23b, 23c in the power supply devices 13 to 15, the in-car illumination 20,
It is supplied to the basket outlet 21 and the exterior lighting 22 which are optional devices.

On the other hand, when the power failure detector 50 detects a power failure of the commercial power source 1, the DC power in the power storage device 10 is passed through the charging / discharging device 11 and the charging / discharging control device 12 to the DC bus 3 of the inverter 4. And is used as power for raising and lowering the basket 8.

Further, each changeover switch 2 in the changeover device 18
By switching the contact connection state of 3a, 23b, and 23c to the power failure side, the power supply circuits from the commercial power sources 1 and 16 to the power supply devices 13 to 15 and the elevator electric equipment 17 are cut off.

As a result, the power converter 19 (for example, IP) connected to the charging / discharging device 11 and the DC bus 3 is connected.
M: Intelligent Power Module
e is used), and the stored electric power of the electric power storage device 10 is transferred to each of the changeover switches 23a, 2a in the changeover device 18.
Each power supply unit 13 through the power failure side contacts 3b, 23c
15 and elevator electric equipment 17.

As described above, during the power failure of the elevator, the power converter 19 and the switching device 18 are used to continue the power supply to the respective power supply devices 13 to 15 and the elevator electric equipment 17, so that the power can be maintained even during the power failure. It can operate automatically.

Therefore, the interior lighting 20, the basket 8 and the landing button signal, etc. necessary for the automatic operation can be operated, and even in the case of a power failure, the electric power stored in the electric power storage device 10 enables the same operation as the normal operation. You can continue.

Further, each changeover switch 2 in the changeover device 18
3a, 23b, 23c, when the commercial power supply 1 returns to normal,
As shown in Fig. 2, it is connected again to the contact on the normal side.
Regardless of the state of the commercial power sources 1 and 16, electric power from both the commercial power sources 1 and 16 and the power conversion device 19 is simultaneously supplied from the power storage device 10 to the respective power supply devices 13 to 15 and the elevator electric equipment 17. Is avoided.

Further, the switching device 18 is provided with the in-car illumination 20.
, And optional equipment (outlet 21 in the basket, exterior lighting 22, etc.) are switched in different systems, and as shown in FIG.
If the changeover switch 23c is configured by a cutoff circuit, it is possible to prevent power supply to unnecessary optional equipment during automatic operation during a power failure.

As a result, the amount of electric power stored in the electric power storage device 10 can be effectively used, and the automatic operation time at the time of power failure limited by the amount of electric power stored in the electric power storage device 10 can be maximized. Can be extended to

Further, during automatic operation during a power failure, the operating speed of the elevator may be set slower than that during normal operation to suppress power consumption, thereby further extending the automatic operation time during a power failure.

Further, the power storage device 10 and the charging / discharging device 11
By providing the charging / discharging control device 12 on the power storage device panel 200A different from the control panel 100A, the power conversion device 19 and the switching device 18 can be retrofitted even after the elevator is installed. It has the advantage of being excellent.

Further, the power conversion device 19 can be incorporated in the substrate of the charge / discharge control device 12 by configuring the power conversion device 19 with, for example, a board mounting type IPM, and is integrated with the switching device 18 in the power storage device panel 200A. By providing it, it is possible to configure as a compact device panel 200A without impairing the merit of being retrofitted.

[0051]

As described above, according to the present invention, a power storage device for storing DC power, a charge / discharge control device for controlling charging / discharging of the power storage device, and DC power output from the power storage device. Since it is equipped with a power converter that converts power into AC power, and an elevator electrical equipment and power supply that are supplied with AC power output from the power converter, it does not impair the energy-saving function and is equivalent to normal operation during a power failure. There is an effect that an elevator control device capable of continuing the operation of is obtained.

Further, according to the present invention, the elevator electric equipment includes the interior lighting of the elevator, and the power supply device is
Since the elevator control power supply device, the car control power supply device, and the hall control power supply device are included, there is an effect that an elevator control device that can continue the same operation as the normal operation even when a power failure occurs.

Further, according to the present invention, at least the commercial power source related to the power supply to the power source device and the power failure detector for detecting the power failure of the commercial power source are provided, and the power conversion device responds to the power failure detector. Since electric power is supplied to the elevator electric equipment and the power supply device at the time of a power failure of the commercial power supply, there is an effect that an elevator control device capable of continuing an operation equivalent to a normal operation even at the time of a power failure can be obtained.

Further, according to the present invention, a switching device inserted between the commercial power source and the power converter and the elevator control device is provided, and the switching device is AC power from the commercial power source or AC power from the power storage device. Since only one of the electric power is supplied to the elevator control device, there is an effect that an elevator control device that avoids simultaneous power supply from the commercial power supply and the power conversion device can be obtained.

Further, according to the present invention, since the power conversion device and the switching device are provided on the device panel integrated with the power storage device and the charging / discharging control device, a versatile and compact elevator control device can be obtained. effective.

[Brief description of drawings]

FIG. 1 is a block configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a block configuration diagram showing in detail the switching device according to the first embodiment of the present invention.

FIG. 3 is a block configuration diagram showing a conventional elevator control device that realizes energy saving by using a secondary battery.

[Explanation of symbols]

1 commercial power source for power, 3 DC bus, 5 drive device,
8 baskets, 10 power storage device, 11 charging / discharging device, 1
2 charge / discharge control device, 13 elevator control power supply device,
14 car control power supply, 15 landing control power supply, 1
6 Commercial power supplies for lighting, 17 Elevator electrical equipment, 1
8 switching device, 19 power conversion device, 20 basket lighting, 21 basket outlet, 22 exterior lighting, 23a
~ 23c changeover switch, 50 power failure detector, 200A
Power storage device board.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3F002 AA04 CA06 EA08 GA01 GA03                       GB01 GB02                 3F304 CA05 EC02 EC03 EC05 EC06

Claims (5)

[Claims] 1. A power storage device for storing DC power, a charge / discharge control device for controlling charging / discharging of the power storage device, and a power conversion device for converting DC power output from the power storage device into AC power. And an elevator electric device and a power supply device to which the AC power output from the power conversion device is supplied, the elevator control device. 2. The elevator electric equipment includes lighting in an elevator car, and the power supply device includes an elevator control power supply device, a car control power supply device, and a hall control power supply device. Elevator controller. 3. A commercial power supply at least related to power supply to the power supply device, and a power failure detector for detecting a power failure of the commercial power supply, wherein the power conversion device responds to the power failure detector to The elevator control device according to claim 1 or 2, wherein electric power is supplied to the elevator electric equipment and the power supply device at the time of a power failure of a commercial power supply. 4. A switching device inserted between the commercial power supply and the power conversion device and the elevator control device, wherein the switching device is AC power from the commercial power supply or AC power from the power storage device. The elevator controller according to claim 3, wherein only one of the electric power is supplied to the elevator controller. 5. The elevator control device according to claim 1, wherein the power conversion device and the switching device are provided on a device panel integrated with the power storage device and the charge / discharge control device.