CN105174017B - Escalator energy recycle device - Google Patents
Escalator energy recycle device Download PDFInfo
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- CN105174017B CN105174017B CN201510547372.0A CN201510547372A CN105174017B CN 105174017 B CN105174017 B CN 105174017B CN 201510547372 A CN201510547372 A CN 201510547372A CN 105174017 B CN105174017 B CN 105174017B
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Abstract
The present invention relates to a kind of escalator system energy recycle device, including：Located at the first frequency converter of down escalator；Located at the second frequency converter of up staircase；Voltage comparator；First switch；The voltage comparator is connected with the first dc bus of the first frequency converter, the second dc bus of the second frequency converter, first voltage and second voltage are received from the first dc bus, the second dc bus, and the first control signal is sent to the first switch according to the difference of the first voltage and second voltage respectively；The first switch is connected with the first dc bus, the second dc bus, voltage comparator, is opened or closed according to first control signal；During closure, the electric energy of generation is supplied into the second dc bus by the first dc bus.The energy that down escalator is produced can be supplied to up staircase to use by above-mentioned escalator system energy recycle device, reduced the power of the braking resistor for consuming unnecessary retrogradation energy, effectively increased energy utilization efficiency.
Description
Technical field
The present invention relates to escalator technical field, more particularly to escalator energy recycle device.
Background technology
With the development and the progress of science and technology in epoch, the application of escalator has obtained very big development, market, hotel,
The usage amount of escalator is continuously increased in station, airport, subway.In these application scenarios, escalator substantially one day
Continuously it is operated in more than 12 hours, in the public transit facilities such as airport, subway, railway station, escalator is even more all through the night
Run on ground.From the point of view of behaviour in service, the energy consumption of escalator is huge.One group of common escalator, it is every that power is generally 8kW
Platform, if working 12 hours daily, the power consumption of 1 year is up to 70,000 kilowatts.Assuming that every layer of megastore sets two groups certainly
Calculated by 9 layers in dynamic staircase a, market, then just much 1,120,000 kilowatts of the electric energy that market is consumed on the escalator every year.Cause
This, is studied significant to energy-saving and emission-reduction to the energy-conserving control technology of escalator.
At present, escalator typically uses a terraced a set of power set, can be with way traffic, and operation and maintenance is convenient, and
On another in same group of staircase without influence.Such escalator is segmented into two working conditions of uplink and downlink, on
Row consumption electric energy overcomes the friction working inside staircase, descending to consume the electric energy that gravitional force is converted into by braking resistor,
So as to which DC bus-bar voltage be controlled within the specific limits.As can be seen here, prior art is no can be by the original gravity of passenger
Potential energy is used escalator energy regenerating, and consumes meaningless electric energy, and utilization rate of electrical is low.
The content of the invention
Based on this, it is necessary to for prior art utilization rate of electrical it is low the problem of there is provided a kind of escalator energy regenerating
Device.
A kind of escalator energy recycle device, including：
Located at the first frequency converter of down escalator；Located at the second frequency converter of up staircase；Voltage comparator；First opens
Close；
The voltage comparator is connected with the first dc bus of the first frequency converter, the second dc bus of the second frequency converter
Connect, receive first voltage and second voltage from the first dc bus, the second dc bus respectively, and according to the first voltage and
The difference of second voltage sends the first control signal to the first switch；
The first switch is connected with the first dc bus, the second dc bus, voltage comparator, according to described first
Control signal is opened or closed；During closure, the energy that the first staircase is produced is transferred to the second direct current by the first dc bus
Bus is used for the second staircase.
Above-mentioned escalator system energy recycle device, by the way that the first dc bus is connected with the second dc bus, instantly
When row staircase is run, the energy that can produce down escalator is transferred on the second dc bus from the first dc bus and helped for up
Ladder is used, and is reduced the power of the braking resistor for consuming unnecessary retrogradation energy, is effectively increased energy utilization efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the escalator system energy recycle device of first embodiment；
Fig. 2 is the structural representation of the voltage comparator of one embodiment；
Fig. 3 is the structural representation of the escalator system energy recycle device of second embodiment.
Embodiment
Embodiments of the invention are further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the escalator system energy recycle device of one embodiment.As shown in figure 1, the present invention
Escalator system energy-recuperation system includes：
Located at the first frequency converter 10 of down escalator；Located at the second frequency converter 20 of up staircase；Voltage comparator 30；The
One switch 40；
It is first dc bus 101 of the voltage comparator 30 and the first frequency converter 10, the second of the second frequency converter 20 straight
Stream bus 201 is connected, and receives first voltage and second voltage from the first dc bus 101, the second dc bus 201 respectively,
And the first control signal is sent to the first switch 40 according to the difference of the first voltage and second voltage；
The first switch 40 is connected with the first dc bus 101, the second dc bus 201, voltage comparator 30, root
It is opened or closed according to first control signal；During closure, the energy that the first staircase is produced is passed by the first dc bus 101
It is defeated to be used to the second dc bus 201 for the second staircase.
The up staircase and down escalator of the present invention can use specification identical staircase.Correspondingly, above-mentioned first frequency converter
Can be specification identical frequency converter with the second frequency converter.Above-mentioned annexation can be wired connection or wirelessly connect
Connect.
When escalator system electric power starting, the first voltage of 30 pair of first dc bus of voltage comparator and the second direct current are female
The second voltage of line is compared；When the voltage difference within a preset range when, to the first dc bus and the second direct current
First switch between bus, which sends close command, closes the first switch；Otherwise, open command is sent to first switch
Disconnect the first switch.For example, when down escalator and up staircase are in holding state, it is believed that now two equipment
Dc bus voltage it is equal.Now, the control of voltage comparator 30 first switch closure, so that in the first dc bus and the
Path is formed between two dc bus.
When escalator system works, gravity does work to down escalator, and the gravitional force of down escalator can be exchanged into electric energy；On
Row staircase overcomes gravity acting, consumes electric energy.Now, the electricity that gravitional force can be converted into by down escalator by the switch of closure
Up staircase can be supplied to use.Moreover, the handling capacity of passengers of down escalator is bigger, its available electric energy is more.
As shown in Fig. 2 in one embodiment, the voltage comparator 30 may include：
Ratio attenuator circuit 301, filter rectifier 302, analog to digital conversion circuit 303, comparison circuit 304 controls circuit
305；
The ratio attenuator circuit 301 by the voltage of the voltage of the first dc bus and the second dc bus by a certain percentage
Decayed, obtain the first evanescent voltage and the second evanescent voltage；
The filter rectifier 302 is connected with the ratio attenuator circuit 301, to first evanescent voltage and
Two evanescent voltages are filtered and rectification, obtain the first filter rectification voltage and the second filter rectification voltage；
Analog-digital conversion circuit as described 303 is connected with the filter rectifier 302, by the first filter rectification voltage
It is the first digital voltage and the second digital voltage with the second filter rectification voltage conversion；
The comparison circuit 304 is connected with analog-digital conversion circuit as described 303, for calculate first digital voltage and
The difference of second value voltage；
The control circuit 305 is connected with the comparison circuit 304, first switch 40, for being sent out according to the difference
The first control signal is sent, controls the first switch to be opened or closed.
In traditional escalator system, frequency converter directly feeds back to the output electric energy with higher hamonic wave in power network, can be right
Power network is impacted.For example, the injection of harmonic source makes mains by harmonics electric current, harmonic voltage increase, its harm involves the whole network, to each
Planting electrical equipment has different degrees of influence and harm.The escalator system energy recycle device of the present embodiment, by frequency conversion
The output voltage of device is filtered, rectification, and other electrical equipments that the voltage after filtering, rectification is transferred into escalator system make
With, it is to avoid the output electric energy with higher hamonic wave is directly fed back in power network, so as to reduce higher hamonic wave to power network
Harm.
The escalator energy recycle device of the present invention may also include the first controller 50 located at down escalator, and described the
One controller 50 is connected with voltage comparator 30；When detecting down escalator and breaking down, first controller 50 to
Voltage comparator 30 sends Fisrt fault signal；Wherein, the Fisrt fault signal represents that down escalator breaks down；The electricity
Pressure comparator 30 controls first switch 40 to disconnect according to the Fisrt fault signal.
The escalator energy recycle device of the present invention may also include the second controller located at up staircase, described second
Controller is connected with voltage comparator 30；When detecting up staircase and breaking down, the second controller is to voltage ratio
The second fault-signal is sent compared with device 30；Wherein, second fault-signal represents that up staircase breaks down；The voltage ratio compared with
Device 30 controls first switch 40 to disconnect according to second fault-signal.
The first controller 50 and second controller detection down escalator is respectively adopted in above-mentioned escalator energy recycle device
Whether broken down with up staircase, and the connection between two dc bus is disconnected in failure, can avoided false voltage
It is transferred in escalator system, it is ensured that the safe and stable operation of escalator system.
Fig. 3 is the structural representation of the escalator system energy recycle device of second embodiment.As shown in figure 3, the present invention
Escalator system energy recycle device may also include：
AC/DC converter 70；Second switch 80；
The AC/DC converter 70 is connected with the first dc bus, second switch 80；The second switch 80
Determine contact with the electrical equipment of escalator system to be connected, moving contact is connected with AC/DC converter 70 or civil power；Described
One controller 50 is connected with the second switch 80；
The DC voltage that first dc bus is exported is converted to alternating voltage by the AC/DC converter 70；
First controller 50 sends the second control signal according to the running status of down escalator to second switch 80；
The second switch 80 according to second control signal by moving contact between AC/DC converter and civil power
Switching；When moving contact is switched to AC/DC converter, the alternating voltage that AC/DC converter is exported supplies staircase
Electrical equipment.
In above-mentioned escalator system energy recycle device, the AC/DC converter 70 is used on dc bus
Converting direct-current voltage into alternating-current voltage.The electrical equipment of the escalator system may include contactor, foundation brakes, additional brake
Device, Switching Power Supply, fan, oil pump etc..Because above-mentioned electrical equipment uses alternating current, changed first by AC/DC
The DC voltage that dc bus is exported is converted to alternating voltage by device 70, then is supplied to above-mentioned electricity consumption to set the alternating voltage
It is standby., can be by the original dump of above-mentioned electrical equipment because down escalator is energized to above-mentioned electrical equipment.
Above-mentioned escalator system energy recycle device is by AC/DC converter 70 by the voltage conversion of the first dc bus
Other electrical equipments for alternating voltage for escalator system use, and reduce the braking resistor for consuming unnecessary retrogradation energy
Power, effectively increases energy utilization efficiency.
Above-mentioned escalator system energy-recuperation system may include following four operating mode：
Operating mode one：Down escalator subtracts lower scanning frequency or braking stops.Under the operating mode, the retrogradation energy that down escalator is produced
It is less, the energy that will be brought back to life after stream can be delivered by direct current and is supplied to the other equipment on staircase to use.
Operating mode two：Down escalator heavy service.Under the operating mode, down escalator can produce more retrogradation energy, now,
Energy can will be brought back to life by the switch between two dc bus and be transferred to up staircase from down escalator；Down escalator can also be produced
Raw retrogradation energy is supplied to other electrical equipments of escalator system to use after being converted into exchange by AC/DC converter.
Under the operating mode, because the retrogradation energy that down escalator is produced is more, when other of up staircase and escalator system
When the energy of electrical equipment consumption is less than the energy that down escalator is produced, the voltage on dc bus can gradually rise.Now, may be used
Braking resistor is connected on frequency converter to consume unnecessary retrogradation energy by a brake pipe, the voltage on dc bus is become
In stable.
Operating mode three：Up staircase is out of service.Under the operating mode, control device controls the first dc bus and the second direct current
Switching off between bus, down escalator by AC/DC converter by photovoltaic conversion be alternating voltage after be supplied to
Other electrical equipments of escalator system are used.
Operating mode four：One staircase breaks down.Under the operating mode, the controller of failure elevator sends failure letter to comparator
Number, comparator is according to the fault-signal by switching off between two dc bus.
As described above, when down escalator heavy duty is descending, the retrogradation energy of generation is more, it be able to will be braked by a brake pipe
Resistance is connected on frequency converter to consume unnecessary retrogradation energy, the voltage on dc bus is tended towards stability；Work as down escalator
During retarding braking, the retrogradation energy of generation is less, can now disconnect the connection of braking resistor and frequency converter.
The escalator system energy recycle device of the present invention has advantages below：
(1) switched, when the switch is closed, down escalator can be produced by being set between the dc bus of two staircases
Energy is supplied to up staircase to use, and reduces the power of the braking resistor for consuming unnecessary retrogradation energy, effectively increases
Energy utilization efficiency；
(2) voltage on the dc bus of down escalator is supplied to other use of staircase by AC/DC converter
Electric equipment is used, and further increases energy utilization efficiency；
(3) energy by two equipment rooms mutually using or through direct current deliver stream after used for the electrical equipment of staircase,
Cost is relatively low, and can avoid impacting the electric energy feedback power network for having higher hamonic wave to power network；
(4) when detecting one of staircase and breaking down, the connection between the dc bus of two staircases is disconnected, it is to avoid will
False voltage is transferred in escalator system, improves the security performance of escalator system.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of escalator system energy recycle device, it is characterised in that including：
Located at the first frequency converter of down escalator；Located at the second frequency converter of up staircase；Voltage comparator；First switch；
The voltage comparator is connected with the first dc bus of the first frequency converter, the second dc bus of the second frequency converter,
Respectively first voltage and second voltage are received from the first dc bus, the second dc bus, and according to the first voltage and the
The difference of two voltages sends the first control signal to the first switch；
The first switch is connected with the first dc bus, the second dc bus, voltage comparator, according to the described first control
Signal is opened or closed；During closure, the energy that the first staircase is produced is transferred to the second dc bus by the first dc bus
Used for the second staircase.
2. escalator system energy recycle device according to claim 1, it is characterised in that when voltage comparator detection
To the voltage difference within a preset range when, control first switch closure；Otherwise, control first switch disconnects.
3. escalator system energy recycle device according to claim 1, it is characterised in that also include：
Located at the first controller of down escalator, first controller is connected with voltage comparator；
When detecting down escalator and breaking down, first controller sends Fisrt fault signal to voltage comparator；Its
In, the Fisrt fault signal represents that down escalator breaks down；
The voltage comparator controls first switch to disconnect according to the Fisrt fault signal.
4. escalator system energy recycle device according to claim 1, it is characterised in that also include：
Located at the second controller of up staircase, the second controller is connected with voltage comparator；
When detecting up staircase and breaking down, the second controller sends the second fault-signal to voltage comparator；Its
In, second fault-signal represents that up staircase breaks down；
The voltage comparator controls first switch to disconnect according to second fault-signal.
5. escalator system energy recycle device according to claim 3, it is characterised in that also include：
AC/DC converter；Second switch；
The AC/DC converter is connected with the first dc bus, second switch；The second switch determines contact with helping
The electrical equipment of terraced system is connected, and moving contact is connected with AC/DC converter or civil power；First controller and institute
Second switch is stated to be connected；
The DC voltage that first dc bus is exported is converted to alternating voltage by the AC/DC converter；
First controller sends the second control signal according to the running status of down escalator to second switch；
The second switch switches between AC/DC converter and civil power moving contact according to second control signal；
When moving contact is switched to AC/DC converter, the electricity consumption that the alternating voltage that AC/DC converter is exported supplies staircase is set
It is standby.
6. escalator system energy recycle device according to claim 5, it is characterised in that when first controller detection
When being powered off to down escalator, the moving contact of control second switch is switched to civil power.
7. escalator system energy recycle device according to claim 5, it is characterised in that when first controller detection
When being broken down to down escalator, the moving contact of control second switch is switched to civil power.
8. escalator system energy recycle device according to claim 3, it is characterised in that also include：
Braking resistor, the 3rd switch；
The braking resistor is connected with the described 3rd switch, the 3rd switch and first controller, the first frequency converter
It is connected；
Described 3rd switchs for receiving the second control signal from the first controller；
3rd switch is closed or disconnected according to second control signal；During closure, connection braking resistor is to the first direct current
Voltage on bus and the second dc bus carries out partial pressure.
9. escalator system energy recycle device according to claim 8, it is characterised in that the first controller detects first
When voltage on dc bus is raised, the switch closure of control the 3rd；
If the first controller is not detected by the voltage rise on the first dc bus, control the 3rd is switched off.
10. escalator system energy recycle device according to claim 1, it is characterised in that the voltage comparator includes：
Ratio attenuator circuit, filter rectifier, analog to digital conversion circuit, comparison circuit controls circuit；
The ratio attenuator circuit is declined the voltage of the voltage of the first dc bus and the second dc bus by a certain percentage
Subtract, obtain the first evanescent voltage and the second evanescent voltage；
The filter rectifier and the ratio attenuator circuit are connected, to first evanescent voltage and the second evanescent voltage
It is filtered and rectification, obtains the first filter rectification voltage and the second filter rectification voltage；
Analog-digital conversion circuit as described is connected with the filter rectifier, and the first filter rectification voltage and second are filtered
Commutating voltage is converted to the first digital voltage and the second digital voltage；
The comparison circuit is connected with analog-digital conversion circuit as described, for calculating first digital voltage and the second numeral
The difference of voltage；
The control circuit is connected with the comparison circuit, first switch, believes for sending the first control according to the difference
Number, control the first switch to be opened or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510547372.0A CN105174017B (en) | 2015-08-31 | 2015-08-31 | Escalator energy recycle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510547372.0A CN105174017B (en) | 2015-08-31 | 2015-08-31 | Escalator energy recycle device |
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| Publication Number | Publication Date |
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| CN105174017A CN105174017A (en) | 2015-12-23 |
| CN105174017B true CN105174017B (en) | 2017-09-26 |
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ID=54896569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510547372.0A Active CN105174017B (en) | 2015-08-31 | 2015-08-31 | Escalator energy recycle device |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10305983A (en) * | 1997-05-01 | 1998-11-17 | Nippon Otis Elevator Co | Control system of escalator |
| JP3413758B2 (en) * | 1998-07-07 | 2003-06-09 | 株式会社日立ビルシステム | Escalator device |
| US7246686B2 (en) * | 2004-01-30 | 2007-07-24 | Thyssen Elevator Capital Corp. | Power supply for elevator systems having variable speed drives |
| CN101848850B (en) * | 2007-02-13 | 2016-08-03 | 奥蒂斯电梯公司 | The automatic rescue operation of regenerative drive system |
| CN101159425A (en) * | 2007-10-19 | 2008-04-09 | 王武 | Elevator staircase group frequency conversion drive united power supply energy-saving operation method and apparatus |
| CN201553510U (en) * | 2009-10-27 | 2010-08-18 | 苏州远志科技有限公司 | Frequency conversion energy-saving device for elevators and ladders |
| CN103010868B (en) * | 2011-09-26 | 2014-08-13 | 上海三菱电梯有限公司 | Elevator energy-saving system and control method thereof |
| CN202346563U (en) * | 2011-10-14 | 2012-07-25 | 上海爱登堡电梯股份有限公司 | Energy feedback system for escalator |
| CN203319493U (en) * | 2013-06-26 | 2013-12-04 | 重庆亮康光电科技有限公司 | Regenerated electric energy feedback power-saving system for escalators |
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2015
- 2015-08-31 CN CN201510547372.0A patent/CN105174017B/en active Active
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