CN105174017A - Escalator energy recovery device - Google Patents
Escalator energy recovery device Download PDFInfo
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- CN105174017A CN105174017A CN201510547372.0A CN201510547372A CN105174017A CN 105174017 A CN105174017 A CN 105174017A CN 201510547372 A CN201510547372 A CN 201510547372A CN 105174017 A CN105174017 A CN 105174017A
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Abstract
The invention relates to an escalator energy recovery device. The device comprises a first frequency converter which is arranged on a downward escalator; a second frequency converter which is arranged on an upward escalator; a voltage comparator; and a first switch, wherein the voltage comparator is connected with a first direct current bus of the first frequency converter and a second direct current bus of the second frequency converter, receives the first voltage and the second voltage from the first direct current bus and the second direct current bus respectively, and sends a first control signal to the first switch according to the difference between the first voltage and the second voltage; the first switch is connected with the first direct current bus, the second direct current bus and the voltage comparator, and is switched on/off according to the first control signal; when the first switch is switched off, the electric energy generated by the first direct current bus is supplied to the second direct current bus. The energy generated by the downward escalator is provided for the upward escalator, the power of brake resistance for consuming the excess retrogradation energy is reduced, and the energy utilization efficiency is effectively increased.
Description
Technical field
The present invention relates to escalator technical field, particularly relate to escalator energy recycle device.
Background technology
Along with the development in epoch and the progress of science and technology, the application of escalator obtains very large development, and in market, hotel, station, airport, subway, the use amount of escalator constantly increases.In these application scenarios, continuous working in a day is more than 12 hours substantially for escalator, and in the mass transportation facilitieies such as airport, subway, Railway station, escalator runs especially all through the night.From service condition, the energy consumption of escalator is huge.One group of common escalator, power is generally the every platform of 8kW, if every day working 12 hours, the power consumption of a year can reach 70,000 kilowatts.Suppose that every layer, megastore arranges two groups of escalators, a market is calculated by 9 layers, so the electric energy that consumes on the escalator every year of market just much 1,120,000 kilowatts.Therefore, study energy-saving and emission-reduction significant to the energy-conserving control technology of escalator.
At present, escalator generally adopts a terraced a set of engine installation, can way traffic, and operation and maintenance is convenient, and on another in same group of staircase without impact.Such escalator can be divided into uplink and downlink two mode of operations, and up consumption electric energy overcomes the friction working of staircase inside, the descending electric energy converted to by braking resistor consumption gravitional force, thus DC bus-bar voltage is controlled within the specific limits.As can be seen here, prior art does not have the escalator energy regenerating that original for passenger gravitional force can be used, and consumes meaningless electric energy, and utilization rate of electrical is low.
Summary of the invention
Based on this, be necessary, for the low problem of prior art utilization rate of electrical, to provide a kind of escalator energy recycle device.
A kind of escalator energy recycle device, comprising:
Be located at the first frequency converter of down escalator; Be located at the second frequency converter of up staircase; Voltage comparator; First switch;
Described voltage comparator is connected with the first DC bus of the first frequency converter, the second DC bus of the second frequency converter, receive the first voltage and the second voltage from the first DC bus, the second DC bus respectively, and send the first control signal according to the difference of described first voltage and the second voltage to described first switch;
Described first switch is connected with the first DC bus, the second DC bus, voltage comparator, disconnects or close according to described first control signal; Time closed, the energy that the first staircase produces is transferred to the second DC bus for the second staircase by the first DC bus.
Above-mentioned escalator system energy recycle device, by the first DC bus is connected with the second DC bus, when down escalator runs, the energy that down escalator produces can be transferred to the second DC bus for up staircase from the first DC bus, decreasing the power of the braking resistor for consuming unnecessary energy of bringing back to life, effectively improve energy utilization efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the escalator system energy recycle device of the first embodiment;
Fig. 2 is the structural representation of the voltage comparator of an embodiment;
Fig. 3 is the structural representation of the escalator system energy recycle device of the second embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are further described.
Fig. 1 is the structural representation of the escalator system energy recycle device of an embodiment.As shown in Figure 1, escalator system energy-recuperation system of the present invention comprises:
Be located at the first frequency converter 10 of down escalator; Be located at the second frequency converter 20 of up staircase; Voltage comparator 30; First switch 40;
Described voltage comparator 30 is connected with the second DC bus 201 of the first DC bus 101, second frequency converter 20 of the first frequency converter 10, receive the first voltage and the second voltage from the first DC bus 101, second DC bus 201 respectively, and send the first control signal according to the difference of described first voltage and the second voltage to described first switch 40;
Described first switch 40 is connected with the first DC bus 101, second DC bus 201, voltage comparator 30, disconnects or close according to described first control signal; Time closed, the energy that the first staircase produces is transferred to the second DC bus 201 for the second staircase by the first DC bus 101.
Up staircase of the present invention can adopt with down escalator the staircase that specification is identical.Correspondingly, above-mentioned first frequency converter and the second frequency converter can be the frequency converters that specification is identical.Above-mentioned annexation can be wired connection, also can be wireless connections.
When escalator system electric power starting, voltage comparator 30 compares the first voltage of the first DC bus and the second voltage of the second DC bus; When the difference of described voltage is in preset range, sends close command to the first switch between the first DC bus and the second DC bus and described first switch is closed; Otherwise, send open command to the first switch and described first switch disconnected.Such as, when down escalator and up staircase are in readiness for action, can think that now the voltage of the DC bus of two equipment is equal.Now, voltage comparator 30 controls the first switch and closes, thus forms path between the first DC bus and the second 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; Up staircase overcomes gravity acting, consumes electric energy.Now, down escalator is supplied to the use of up staircase by the electric energy that gravitional force converts to by closed switch.And the passenger capacity of down escalator is larger, its available electric energy is more.
As shown in Figure 2, in one embodiment, described voltage comparator 30 can comprise:
Ratio attenuator circuit 301, filter rectifier 302, analog to digital conversion circuit 303, comparator circuit 304, control circuit 305;
The voltage of the voltage of the first DC bus and the second DC bus is decayed by described ratio attenuator circuit 301 by a certain percentage, obtains the first evanescent voltage and the second evanescent voltage;
Described filter rectifier 302 is connected with described ratio attenuator circuit 301, carries out filtering and rectification to described first evanescent voltage and the second evanescent voltage, obtains the first filter rectification voltage and the second filter rectification voltage;
Analog-digital conversion circuit as described 303 is connected with described filter rectifier 302, is the first digital voltage and the second digital voltage by described first filter rectification voltage and the second filter rectification voltage transitions;
Described comparator circuit 304 is connected with analog-digital conversion circuit as described 303, for calculating the difference of described first digital voltage and second value voltage;
Described control circuit 305 is connected with described comparator circuit 304, first switch 40, for sending the first control signal according to described difference, controlling described first switch and disconnects or close.
In traditional escalator system, the output electric energy with high order harmonic directly feeds back in electrical network by frequency converter, can impact electrical network.Such as, the injection of harmonic source makes mains by harmonics electric current, harmonic voltage increase, and its harm involves the whole network, has impact in various degree and harm to various electrical equipment.The escalator system energy recycle device of the present embodiment, by carrying out filtering, rectification to the output voltage of frequency converter, and the voltage transmission after filtering, rectification is used to other consumers of escalator system, avoid and the output electric energy with high order harmonic is directly fed back in electrical network, thus reduce the harm of high order harmonic to electrical network.
Escalator energy recycle device of the present invention also can comprise the first controller 50 being located at down escalator, and described first controller 50 is connected with voltage comparator 30; When down escalator et out of order being detected, described first controller 50 sends Fisrt fault signal to voltage comparator 30; Wherein, described Fisrt fault signal indication down escalator et out of order; Described voltage comparator 30 disconnects according to described Fisrt fault signal control first switch 40.
Escalator energy recycle device of the present invention also can comprise the second controller 60 being located at up staircase, and described second controller 60 is connected with voltage comparator 30; When up staircase et out of order being detected, described second controller 60 sends the second breakdown signal to voltage comparator 30; Wherein, described second breakdown signal represents up staircase et out of order; Described voltage comparator 30 controls the first switch 40 according to described second breakdown signal and disconnects.
Above-mentioned escalator energy recycle device adopts the first controller 50 and second controller 60 to detect down escalator and up staircase whether et out of order respectively, and the connection disconnected when fault between two DC buss, false voltage can be avoided to be transferred in escalator system, to ensure that the safe and stable operation of escalator system.
Fig. 2 is the structural representation of the escalator system energy recycle device of the second embodiment.As shown in Figure 2, escalator system energy recycle device of the present invention also can comprise:
AC/DC converter 70; Second switch 80;
Described AC/DC converter 70 is connected with the first DC bus, second switch 80; The contact of determining of described second switch 80 is connected with the consumer of escalator system, and moving contact is connected with AC/DC converter 70 or civil power; Described first controller 50 is connected with described second switch 80;
The vdc that first DC bus exports is converted to alternating-current voltage/AC voltage by described AC/DC converter 70;
Described first controller 50 sends the second control signal according to the running state of down escalator to second switch 80;
Moving contact switches according to described second control signal by described second switch 80 between AC/DC converter and civil power; When moving contact is switched to AC/DC converter, the consumer of the alternating-current voltage/AC voltage supply staircase that AC/DC converter is exported.
In above-mentioned escalator system energy recycle device, described AC/DC converter 70 is for by the converting direct-current voltage into alternating-current voltage on DC bus.The consumer of described escalator system can comprise contactless switch, foundation brakes, additional brake, Switching Power Supply, fan, oil pump etc.Because above-mentioned consumer uses alternating current, first by AC/DC converter 70, the vdc that DC bus exports is converted to alternating-current voltage/AC voltage, more described alternating-current voltage/AC voltage is supplied to above-mentioned consumer.Because down escalator is to above-mentioned consumer energy supply, can by original for above-mentioned consumer supply disconnecton.
The voltage transitions of the first DC bus is alternating-current voltage/AC voltage other consumers for escalator system by AC/DC converter 70 by above-mentioned escalator system energy recycle device, decreasing the power of the braking resistor for consuming unnecessary energy of bringing back to life, effectively improve energy utilization efficiency.
Above-mentioned escalator system energy-recuperation system can comprise following four kinds of operating modes:
Operating mode one: down escalator subtracts lower scanning frequency or braking stops.Under this operating mode, the energy of bringing back to life that down escalator produces is less, after delivering stream, energy of bringing back to life is supplied to other equipment use on staircase by direct current.
Operating mode two: down escalator heavy service.Under this operating mode, down escalator can produce more energy of bringing back to life, and now, is transferred to up staircase by the energy of bringing back to life of the switch between two DC buss from down escalator; Other consumers being supplied to escalator system after also can converting by AC/DC converter the energy of bringing back to life that down escalator produces to interchange use.
Under this operating mode, the energy of bringing back to life produced due to down escalator is more, and when the energy of other consumer consumption of up staircase and escalator system is less than the energy that down escalator produces, the voltage on DC bus can raise gradually.Now, braking resistor to be connected on frequency converter to consume unnecessary energy of bringing back to life by a brake pipe, the voltage on DC bus is tended towards stability.
Operating mode three: up staircase is out of service.Under this operating mode, the switch that control setup controls between the first DC bus and the second DC bus disconnects, and down escalator is supplied to escalator system other consumers after by AC/DC converter photovoltaic conversion being alternating-current voltage/AC voltage use.
Operating mode four: one staircase et out of order.Under this operating mode, the controller of fault elevator sends breakdown signal to comparator, and the switch between two DC buss disconnects according to described breakdown signal by comparator.
As mentioned above, when down escalator heavy duty is descending, the energy of bringing back to life of generation is more, braking resistor to be connected on frequency converter to consume unnecessary energy of bringing back to life, the voltage on DC bus is tended towards stability by a brake pipe; When down escalator brake snub, the energy of bringing back to life of generation is less, now can disconnect the connection of braking resistor and frequency converter.
Escalator system energy recycle device of the present invention has the following advantages:
(1) by arranging switch between the DC bus of two staircases, when the switch is closed, the energy that down escalator produces can be supplied to up staircase to use, decrease the power of the braking resistor for consuming unnecessary energy of bringing back to life, effectively improve energy utilization efficiency;
(2) by AC/DC converter, the voltage on the DC bus of down escalator is supplied to other consumers use of staircase, further increases energy utilization efficiency;
(3) energy is mutually utilized by two equipment rooms or delivers the consumer for staircase after stream through direct current, and cost is lower, and can avoid having the electric energy feedback electrical network of high order harmonic and to impact electrical network;
(4) when one of staircase et out of order being detected, the connection between the DC bus disconnecting two staircases, avoids and is transferred in escalator system by false voltage, improve the safety performance of escalator system.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an escalator system energy recycle device, is characterized in that, comprising:
Be located at the first frequency converter of down escalator; Be located at the second frequency converter of up staircase; Voltage comparator; First switch;
Described voltage comparator is connected with the first DC bus of the first frequency converter, the second DC bus of the second frequency converter, receive the first voltage and the second voltage from the first DC bus, the second DC bus respectively, and send the first control signal according to the difference of described first voltage and the second voltage to described first switch;
Described first switch is connected with the first DC bus, the second DC bus, voltage comparator, disconnects or close according to described first control signal; Time closed, the energy that the first staircase produces is transferred to the second DC bus for the second staircase by the first DC bus.
2. escalator system energy recycle device according to claim 1, is characterized in that, when described voltage comparator detects that described voltage difference is in preset range, controls the first switch and closes; Otherwise, control the first switch and disconnect.
3. escalator system energy recycle device according to claim 1, is characterized in that, also comprise:
Be located at the first controller of down escalator, described first controller is connected with voltage comparator;
When down escalator et out of order being detected, described first controller sends Fisrt fault signal to voltage comparator; Wherein, described Fisrt fault signal indication down escalator et out of order;
Described voltage comparator disconnects according to described Fisrt fault signal control first switch.
4. escalator system energy recycle device according to claim 1, is characterized in that, also comprise:
Be located at the second controller of up staircase, described second controller is connected with voltage comparator;
When up staircase et out of order being detected, described second controller sends the second breakdown signal to voltage comparator; Wherein, described second breakdown signal represents up staircase et out of order;
Described voltage comparator controls the first switch according to described second breakdown signal and disconnects.
5. escalator system energy recycle device according to claim 3, is characterized in that, also comprise:
AC/DC converter; Second switch;
Described AC/DC converter is connected with the first DC bus, second switch; The contact of determining of described second switch is connected with the consumer of escalator system, and moving contact is connected with AC/DC converter or civil power; Described first controller is connected with described second switch;
The vdc that first DC bus exports is converted to alternating-current voltage/AC voltage by described AC/DC converter;
Described first controller sends the second control signal according to the running state of down escalator to second switch;
Moving contact switches according to described second control signal by described second switch between AC/DC converter and civil power; When moving contact is switched to AC/DC converter, the consumer of the alternating-current voltage/AC voltage supply staircase that AC/DC converter is exported.
6. escalator system energy recycle device according to claim 5, is characterized in that, when described first controller detects down escalator power-off, the moving contact controlling second switch is switched to civil power.
7. escalator system energy recycle device according to claim 5, is characterized in that, when described first controller detects down escalator et out of order, the moving contact controlling second switch is switched to civil power.
8. escalator system energy recycle device according to claim 3, is characterized in that, also comprise:
Braking resistor, the 3rd switch;
Described braking resistor is connected with described 3rd switch, and described 3rd switch is connected with described first controller, the first frequency converter;
Described 3rd switch is used for receiving the second control signal from the first controller;
Described 3rd switch is closed or disconnection according to described second control signal; Time closed, connect braking resistor and dividing potential drop is carried out to the voltage on the first DC bus and the second DC bus.
9. escalator system energy recycle device according to claim 8, is characterized in that, when the first controller detects that the voltage on the first DC bus raises, controls the 3rd switch and closes;
If the first controller does not detect that the voltage on the first DC bus raises, control the 3rd switch and disconnect.
10. escalator system energy recycle device according to claim 1, is characterized in that, described voltage comparator comprises:
Ratio attenuator circuit, filter rectifier, analog to digital conversion circuit, comparator circuit, control circuit;
The voltage of the voltage of the first DC bus and the second DC bus is decayed by described ratio attenuator circuit by a certain percentage, obtains the first evanescent voltage and the second evanescent voltage;
Described filter rectifier is connected with described ratio attenuator circuit, carries out filtering and rectification to described first evanescent voltage and the second evanescent voltage, obtains the first filter rectification voltage and the second filter rectification voltage;
Analog-digital conversion circuit as described is connected with described filter rectifier, is the first digital voltage and the second digital voltage by described first filter rectification voltage and the second filter rectification voltage transitions;
Described comparator circuit is connected with analog-digital conversion circuit as described, for calculating the difference of described first digital voltage and second value voltage;
Described control circuit is connected with described comparator circuit, the first switch, for sending the first control signal according to described difference, controlling described first switch and disconnects or close.
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| CN201510547372.0A CN105174017B (en) | 2015-08-31 | 2015-08-31 | Escalator energy recycle device |
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| CN201510547372.0A CN105174017B (en) | 2015-08-31 | 2015-08-31 | Escalator energy recycle device |
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| CN105174017B CN105174017B (en) | 2017-09-26 |
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Citations (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 |
| AU2004315263A1 (en) * | 2004-01-30 | 2005-08-18 | Thyssen Elevator Capital Corp. | Energy efficient variable speed drive for elevator systems |
| 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 |
| WO2008100259A1 (en) * | 2007-02-13 | 2008-08-21 | Otis Elevator Company | Automatic rescue operation for a regenerative drive system |
| 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 |
| 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 |
| CN103010868A (en) * | 2011-09-26 | 2013-04-03 | 上海三菱电梯有限公司 | Elevator energy-saving system and control method thereof |
| 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 |
-
2015
- 2015-08-31 CN CN201510547372.0A patent/CN105174017B/en active Active
Patent Citations (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 |
| AU2004315263A1 (en) * | 2004-01-30 | 2005-08-18 | Thyssen Elevator Capital Corp. | Energy efficient variable speed drive for elevator systems |
| WO2008100259A1 (en) * | 2007-02-13 | 2008-08-21 | Otis Elevator Company | Automatic rescue operation for a 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 |
| CN103010868A (en) * | 2011-09-26 | 2013-04-03 | 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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