CN107352338A - Energy-saving device of elevator and its control operation method based on dual energy memory module - Google Patents
Energy-saving device of elevator and its control operation method based on dual energy memory module Download PDFInfo
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- CN107352338A CN107352338A CN201710789747.3A CN201710789747A CN107352338A CN 107352338 A CN107352338 A CN 107352338A CN 201710789747 A CN201710789747 A CN 201710789747A CN 107352338 A CN107352338 A CN 107352338A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
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- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Elevator Control (AREA)
Abstract
The present invention provides a kind of energy-saving device of elevator based on dual energy memory module and its control operation method.The present invention is respectively used to store and provide transient state energy and steady state energy, is realized the purpose of energy-conservation using the dual energy stocking system being made up of super capacitor module and battery module of two-way DC converter control.Use voltage automatic switchover technology simultaneously, realize energy-saving device of elevator power supply and power network is powered the seamless automatic switchovers of two passages so that the installation of energy saver and using is not influenceed in the safety and reliability used with elevator.Theory analysis and experimental result prove that the designed energy-saving device of elevator based on dual energy memory module is feasible and effective.The technology for using the present invention can be elevator energy-saving more than 45%.
Description
Technical field
Powered field the invention belongs to the energy, and in particular to a kind of energy-saving device of elevator based on dual energy memory module and
It controls operation method.
Background technology
Car comes and goes operation along trapped orbit during elevator service, is a kind of cycle movement.Its running is constantly by electricity
The mechanical energy of elevator and its object of transport can be converted into（Motoring condition）；Or mechanical energy is converted into electric energy（Regenerative electric power shape
State）, the flowing of energy and variation tendency are inclined to the cycle.Using the method for similar Fourier analysis, elevator can be transported
The caused positive energy exchange of row is decomposed into transient state energy and stable energy both energy models.
Transient state energy corresponds to elevator oneself state and changes caused energy transfer component.One empty elevator is whole up and down
Operation once (operation one is back and forth), investigates the first and last state of elevator and its object of transport, empty elevator is still in original position
Put, its state does not change, and the energy possessed does not also become.Empty elevator is run one week, elevator and extraneous positive energy exchange
Accumulation and be zero, i.e., elevator with extraneous without energy transfer occurs.Energy flow situation when empty elevator is run one week, it is up
When elevator be operated in regenerative power generation state, externally discharge regeneration energy；Elevator is operated in motoring condition when descending, externally absorbs
Energy.Ideally, empty elevator should be equal to its energy consumed in motoring condition in the energy that generating state is sent,
Empty elevator is run one week, the accumulation of elevator and extraneous institute's positive energy exchange and be zero, consistent with the energy state of elevator reality.But
In empty elevator running, the elevator of diverse location, its energy state is constantly changing, and elevator is also constantly sent out with the external world
Raw energy exchange.Now, elevator is referred to as transient state energy by oneself state changes with the energy that the external world is exchanged.According to
Above-mentioned setting is understood, externally discharges transient state energy during ascending for elevator；Transient state energy is externally absorbed when descending；Elevator runs one
Cycle, the accumulation of transient state energy and be zero.
Steady state energy corresponds to elevator traffic Obj State and changes caused energy transfer component.One working passenger is from big
After the bottom in building takes elevator arrival work floor, carried out the work in office, no longer take elevator in short-term, elevator no-load returns
The bottom marquis ladder for going back to building.The first and last state of elevator and its object of transport is investigated, the state of elevator does not change, its own institute
The energy possessed does not change；Passenger position changes to office floor by the bottom, office story height institute where adding it
The integral energy of corresponding gravitional force, elevator and its object of transport adds.Elevator need to absorb energy from the external world, be converted into this
Name passenger is in the gravitional force corresponding to office floor.Energy flow state when the elevator of one passenger of loading is run one week：On
Elevator is operated in regenerative power generation state during row, externally discharges regeneration energy, but due to the presence of passenger, elevator traction machine both sides
Weight difference is reduced, and its regeneration energy total amount discharged is also less than unloaded up elevator；It is under empty elevator when elevator is descending
OK, elevator is operated in motoring condition, externally absorbs energy.Operation one week, elevator is small in the energy total amount that generating state discharges
In the energy total amount that it is consumed in motoring condition, the accumulation of elevator and extraneous institute's positive energy exchange and it is not zero, has lacked elevator and multiplied
The objective gravitional force corresponding to office floor, it is consistent with the energy state that elevator and its object of transport are actual.Conversely, the passenger
Get off from office floor, be that empty elevator is up during ascending for elevator, discharge regeneration energy；It is that underloading elevator is descending when descending,
Energy is externally absorbed, but its energy total amount absorbed is less than the elevator of empty down.The energy that elevator is sent in generating state
Total amount is more than its energy total amount for being consumed in motoring condition, the accumulation of elevator and extraneous institute's positive energy exchange and is not zero, more
Elevator passenger energy corresponding to the gravitional force of reduction, actual energy state is also consistent with elevator and its object of transport.
Therefore, elevator is referred to as steady state energy by object of transport state change with the energy that the external world is exchanged.Can according to above-mentioned setting
Know, externally absorb steady state energy for elevator traffic object, during ascending for elevator；Steady state energy is externally discharged when descending；Elevator
Run a cycle steady state energy accumulation and for elevator traffic object gravitional force variable quantity corresponding to energy total amount.
When elevator is run and extraneous positive energy exchange is the algebraical sum of transient state energy and steady state energy.Elevator no-load or underloading
When up, the transient state energy externally discharged is more than the steady state energy externally absorbed, and its algebraical sum is less than zero, and overall externally release is again
Raw energy, elevator are operated in regenerative power generation state；Conversely, when elevator heavy duty is up, the transient state energy externally discharged is less than externally
The steady state energy of absorption, its algebraical sum are more than zero, and overall externally to absorb energy, elevator is operated in motoring condition.Descending elevator
With similar process.
The content of the invention
It is an object of the invention to provide a kind of energy-saving device of elevator based on dual energy memory module and its control operation side
Method.
The present invention is realized using following technical scheme：A kind of energy-saving device of elevator based on dual energy memory module, it is special
Sign is：Including：Elevator frequency converter, externally fed power network is by elevator frequency converter to elevator supply；Dual energy storage system, institute
State the both ends that dual energy storage system is parallel to elevator frequency converter dc bus；The dual energy storage system includes being sequentially connected
The first two-way DC converter, super capacitor module, the second two-way DC converter, battery module；Microprocessing systems, institute
Microprocessor system is stated to be used to control dual energy storage system；State of elevator detects circuit, and the state of elevator detection circuit is used to examine
Survey elevator operation；Testing result is sent to microprocessing systems by the state of elevator detection circuit；And fault cues and
Process circuit；The fault cues and process circuit are controlled by microprocessing systems.
The present invention also provides a kind of control method of the energy-saving device of elevator based on dual energy memory module, and its feature exists
In：Comprise the following steps：S1：When elevator is operated in regenerative power generation state, the regenerative electric energy that elevator traction machine is sent passes through
After inversion circuit rectifies, it is transformed into direct current energy and is stored in the dc bus of frequency converter；State of elevator detects circuit
After detecting that elevator is operated in regenerative power generation state, if the energy in super capacitor module is less than design load, first pair is controlled
To DC converter, driving energy flows to super capacitor module from dc bus, and super capacitor module absorbs elevator and its transport
The regeneration energy that object discharges；If super capacitor module self-energy is higher than design load, the first two-way DC converter is closed,
Frequency changer direct current bus voltage is further after rise, reaches the operation voltage of braking resistor circuit, and control circuit is by braking resistor
Circuit accesses frequency changer direct current bus, the regeneration energy that consumption elevator discharges, prevents frequency changer direct current bus overtension, protects
Demonstrate,prove the normal use of elevator；S2：When elevator is operated in motoring condition, energy flows to elevator traction machine from frequency changer direct current bus,
The voltage of frequency changer direct current bus reduces, after state of elevator detection electric circuit inspection is operated in motoring condition to elevator, if super electricity
Molar group self-energy is higher than setting value, then controls the first two-way DC converter, and driving energy flows to straight from super capacitor module
Bus is flowed, then flows to elevator traction machine, ladder of powering uses；If super capacitor module self-energy is less than setting value, first is closed
Two-way DC converter, after DC bus-bar voltage further reduces, energy is used by power network by supplying elevator after rectifier bridge；
S3：When elevator belt carries up, the gravitional force increase of elevator traffic object, elevator needs outwardly to absorb steady state energy, controlled
The information that circuit is detected according to state of elevator detection circuit, controls the second two-way DC converter, stable state energy corresponding to driving
Amount flows to super capacitor module from electric discharge battery module；Now ascending for elevator, elevator externally discharge transient state energy；If lift boy
Make in light condition, the steady state energy that elevator externally absorbs is less than the transient state energy externally discharged, and elevator is operated in regenerative electric power
State, super capacitor module in energy storage device absorb the regeneration energy that elevator discharges by the first two-way DC converter,
Then underloading escalator up, energy flow to super capacitor module together from electric discharge battery module and elevator frequency converter two-way respectively；
If elevator heavy duty is up, the steady state energy that elevator externally absorbs is more than the transient state energy externally discharged, and elevator is operated in electronic shape
State, energy flows to super capacitor module from electric discharge battery module, while energy flows to elevator frequency converter from super capacitor module；
S4：When elevator belt carries descending, the gravitional force of elevator traffic object is reduced, and elevator needs outwards release steady state energy, control electricity
The information that road is detected according to state of elevator detection circuit, controls the second two-way DC converter, steady state energy corresponding to driving
Charging accumulator module is flowed to from super capacitor module；Now elevator is descending, and elevator externally absorbs transient state energy；If elevator works
In light condition, then the steady state energy that elevator externally discharges is less than the transient state energy externally absorbed, and elevator is operated in motoring condition,
Super capacitor module in energy storage device flows to elevator frequency converter by the first two-way DC converter；Then underloading descending elevator,
Energy flows to charging accumulator module and elevator frequency converter from super capacitor module respectively；If elevator heavy duty is descending, elevator is external
The steady state energy of release is more than the transient state energy that externally absorbs, and elevator is operated in regenerative power generation state, then energy is from elevator variable frequency
Device flows to super capacitor module, while energy flows to charging accumulator module from super capacitor.
Compared with prior art, the present invention stores the transient state energy of elevator, battery using super capacitor module
Module stores the steady state energy of elevator.Realize that energy saver power supply and power network are powered using voltage automatic switchover technology simultaneously
Between seamless link.Theory analysis and result of the test demonstrate the energy-saving device of elevator based on dual energy memory module
Feasibility and validity.The regeneration energy that ascending for elevator is sent simultaneously is stored in energy storage device, does not feed back to power network,
The quality of power network is not just influenceed, in the absence of billing issues yet.Result of the test shows, proposed based on dual energy memory module
Energy-saving device of elevator can be elevator energy-saving more than 45%.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the two-way DC converter schematic diagram of one embodiment of the invention.
Fig. 3 is the energy storage pattern diagram of one embodiment of the invention energy-saving device of elevator.
Fig. 4 is that releasing for one embodiment of the invention energy-saving device of elevator can pattern diagram.
The power consumption comparison schematic diagram of Fig. 5 specific embodiment of the invention.
Embodiment
Explanation is further explained to the present invention with specific embodiment below in conjunction with the accompanying drawings.
A kind of energy-saving device of elevator based on dual energy memory module, it includes：Elevator frequency converter, externally fed power network lead to
Elevator frequency converter is crossed to elevator supply；Dual energy storage system, the dual energy storage system are parallel to elevator frequency converter direct current
The both ends of bus；The first two-way DC converter that the dual energy storage system includes being sequentially connected, super capacitor module, the
Two two-way DC converters, battery module；Microprocessing systems, the microprocessor system are used to control dual energy storage system；Electricity
Terraced state detection circuit, the state of elevator detection circuit are used to detect elevator operation；The state of elevator detects circuit
Testing result is sent to microprocessing systems；And fault cues process circuit；The fault cues process circuit is by microprocessor
System controls.
The cardinal principle block diagram of the present invention is referring to Fig. 1.
Further, the elevator frequency converter includes frequency converter rectification circuit, frequency changer direct current bus, inversion electricity
Road and braking resistor circuit；The frequency converter rectification circuit input connects externally fed power network；The frequency converter rectification circuit output
The input of inversion circuit is connect through frequency changer direct current bus；Inversion circuit output connects elevator traction machine；The braking
Resistance circuit is connected with frequency changer direct current bus.
The number of the super capacitor module, which calculates, to be comprised the following steps：Exchanged with external during the whole operation of elevator cars with full load
Energy is most, it is assumed that it is：, whereinFor the coefficient of balance of elevator, M contains for elevator
Amount of substance, S are lifting height of lift；Single super capacitor voltage change in a charge and discharge process is, it is single
Super capacitor storage energy be：, C is the value of single electric capacity；Surpass needed for super capacitor module
Level electric capacity number be：, the number of final super capacitor is TC=tC+b；B is safety allowance.
Further, the number of the battery module is calculated and comprised the following steps：
When in all personnel Dou buildings, the steady state energy in building is maximum where elevator, is：, m is in building
The quality of personnel；H is personnel position and the difference in height of building import and export in building；The energy of single accumulators store is, wherein U is the rated voltage of single battery, and I is the rated current of single battery；T is single battery
Discharge duration；The required battery number of battery module, the number of final battery is TB=tB+c；C is safety
Allowance.
Battery module of the present invention is made up of two group storage batteries, and two one group of group storage batteries are used to charge, and another group is used to put
Electricity；Often electrical storage battery number needed for group storage battery is。
Energy-storage system is formed using batteries and super capacitor group hybrid combining in energy saving system of elevator, due to battery
Voltage difference between module, super capacitor module and elevator frequency converter DC bus-bar voltage three is very big, it is therefore desirable to designs
Two reversible transducers connect batteries, super capacitor group and the dc bus of elevator frequency converter.One two-way changing
Device is used for the voltage difference of matched batteries group and super capacitor group, and another reversible transducer is used to match super capacitor group and electricity
The voltage difference of the DC bus-bar voltage of terraced frequency converter.The two reversible transducers driving energy as needed is in batteries, super
Flowed between level capacitance group and elevator frequency converter, realize the needs of energy storage in energy saving system of elevator.Due to whole energy-conservation
The power of system is larger, and the converter designed by the present invention have selected circuit as shown in Figure 2 and become as the bidirectional, dc of system
Parallel operation.First two-way DC converter includes 2n switching tube S11 ... Sn1, and switching tube S12 ... Sn2；S11 ... Sn1 one end
It is connected with dc-link capacitance one end；The one end of S11 ... the Sn1 other end respectively with inductance L1 ... Ln is connected；S12…Sn2
One end difference inductance L1 ... Ln one end connection；S12 ... Sn2 one end is connected with the dc-link capacitance other end；Inductance
L1 ... the Ln other end is homogeneous to be connected with super capacitor module one end；The super capacitor module other end and dc-link capacitance are another
End connection；Switching tube S11 ... Sn1, the controllable ends of S 12 ... Sn2 are connected with microprocessing systems；Control between branch road, which uses, to interlock
The method of control, to reduce the ripple of voltage x current；The second two-way DC converter structure converts with the first bidirectional, dc
Device structure is consistent, and power is different.The convertor controls energy from dc bus flow to super capacitor module when, be buck converter
（BUCK）；It is on the contrary then be booster converter（BOOST）.The power of single branch road is 500W in circuit topology, and n is according to reality
Power that border circuit needs determines.Such as needing 10KW power, then n can be taken as 20.Meanwhile these branch roads
Between control using Interleaved control method, to reduce the ripple of voltage x current.
The present invention also provides a kind of control method of the energy-saving device of elevator described above based on dual energy memory module, its
Comprise the following steps：
S1：When elevator is operated in regenerative power generation state, the regenerative electric energy that elevator traction machine is sent passes through inversion electricity
After the rectification of road, it is transformed into direct current energy and is stored in the dc bus of frequency converter；State of elevator detects electric circuit inspection to lift boy
Make after regenerative power generation state, if the energy in super capacitor module is less than design load, control the first two-way DC converter,
Driving energy flows to super capacitor module from dc bus, and super capacitor module absorbs elevator and its object of transport discharges again
Raw energy；If super capacitor module self-energy is higher than design load, the first two-way DC converter, frequency changer direct current bus are closed
Voltage further after rise, reaches the operation voltage of braking resistor circuit, and braking resistor circuit is accessed frequency converter by control circuit
Dc bus, the regeneration energy that consumption elevator discharges, prevents frequency changer direct current bus overtension, ensures that the normal of elevator makes
With；
S2：When elevator is operated in motoring condition, energy flows to elevator traction machine, frequency changer direct current bus from frequency changer direct current bus
Voltage reduce, state of elevator detection electric circuit inspection be operated in motoring condition to elevator after, if super capacitor module self-energy is high
In setting value, then the first two-way DC converter is controlled, driving energy flows to dc bus from super capacitor module, then flows to electricity
Terraced traction machine, ladder of powering use；If super capacitor module self-energy is less than setting value, the first two-way DC converter is closed,
After DC bus-bar voltage further reduces, energy is used by power network by supplying elevator after rectifier bridge；
S3：When elevator belt carries up, the gravitional force increase of elevator traffic object, elevator needs outwardly to absorb steady state energy,
Control circuit detects the information that is detected of circuit according to state of elevator, controls the second two-way DC converter, steady corresponding to driving
State energy flows to super capacitor module from electric discharge battery module；Now ascending for elevator, elevator externally discharge transient state energy；It is if electric
Ladder is operated in light condition, and the steady state energy that elevator externally absorbs is less than the transient state energy externally discharged, and elevator is operated in regeneration
Generating state, super capacitor module in energy storage device absorb the Regenerated energy that elevator discharges by the first two-way DC converter
Amount, then underloading escalator up, energy flow to super capacitor mould together from electric discharge battery module and elevator frequency converter two-way respectively
Group；If elevator heavy duty is up, the steady state energy that elevator externally absorbs is more than the transient state energy externally discharged, and elevator is operated in electronic
State, energy flows to super capacitor module from electric discharge battery module, while energy flows to elevator variable frequency from super capacitor module
Device；
S4：When elevator belt carries descending, the gravitional force of elevator traffic object is reduced, and elevator needs outwards release steady state energy, control
The information that circuit processed is detected according to state of elevator detection circuit, controls the second two-way DC converter, stable state corresponding to driving
Energy flows to charging accumulator module from super capacitor module；Now elevator is descending, and elevator externally absorbs transient state energy；If elevator
Light condition is operated in, then the steady state energy that elevator externally discharges is less than the transient state energy externally absorbed, and elevator is operated in electronic
State, the super capacitor module in energy storage device flow to elevator frequency converter by the first two-way DC converter；Then underloading is descending
Elevator, energy flow to charging accumulator module and elevator frequency converter from super capacitor module respectively；If elevator heavy duty is descending, elevator
The steady state energy externally discharged is more than the transient state energy that externally absorbs, and elevator is operated in regenerative power generation state, then energy is from elevator
Frequency converter flows to super capacitor module, while energy flows to charging accumulator module from super capacitor.
The switching of elevator supply passage is by taking voltage difference to automatically switch：Set if the energy in super capacitor module is higher than
Definite value, then by the first two-way DC converter by more than the voltage increase of frequency changer direct current bus to peak value so that frequency converter
Rectifier bridge reversely ends, and energy is provided by energy storage device needed for elevator；If super capacitor module self-energy is less than setting value, close
The first two-way DC converter is closed, frequency changer direct current bus voltage is dropped to below peak value with energy output, cuts power network automatically
It is powered；If energy saver breaks down, again by first close two-way DC converter by energy saver from circuit
Excision, elevator are cut power network and are powered automatically.
The idiographic flow of control method of the present invention is briefly illustrated by taking Fig. 3-4 as an example.
1）Elevator underloading is up, and the transient state energy externally discharged is more than the steady state energy externally absorbed；Elevator heavy duty is descending,
The transient state energy externally absorbed is less than the steady state energy externally discharged, and both state elevators are all operated in regenerative power generation state.
After the regenerative electric energy that elevator traction machine is sent is by inversion circuit rectifies, it is transformed into direct current energy and is stored in frequency converter
Dc bus in.Because frequency converter rectification circuit prevents energy from flowing to power network from frequency converter, braking resistor is only female in direct current
Line voltage is just accessed after reaching setting voltage, therefore regenerative electric energy is deposited in frequency changer direct current bus.State of elevator detects circuit
After detecting that elevator is operated in regenerative power generation state, if the energy in super capacitor module is less than design load, control two-way straight
Current converter 1, driving energy flow to super capacitor module from dc bus, and super capacitor module absorbs elevator and its object of transport
The regeneration energy discharged, such as the energy stream 1 in Fig. 3.If super capacitor module self-energy is higher than design load, close two-way straight
Current converter 1, frequency changer direct current bus voltage further after rise, reach the operation voltage of braking resistor circuit, control circuit
Braking resistor is accessed into frequency changer direct current bus, the regeneration energy that consumption elevator discharges, prevents frequency changer direct current bus voltage
It is too high, ensure the normal use of elevator, such as the energy stream 2 in Fig. 3.The elevator for being operated in the state of energy stream 2 does not save, but ensures
The normal use of elevator.
2）When the up or underloading of elevator heavy duty is descending, elevator is operated in motoring condition, and energy is from frequency changer direct current bus stream
To elevator traction machine, the voltage of frequency changer direct current bus reduces.State of elevator detection electric circuit inspection is operated in electronic shape to elevator
After state, if super capacitor module self-energy is higher than setting value, two-way DC converter 1 is controlled, driving energy is from super capacitor
Module flows to dc bus, then flows to elevator traction machine, and ladder of powering uses, such as the energy stream 3 in Fig. 4；If super capacitor module
Self-energy is less than setting value, then closes two-way DC converter 1, after DC bus-bar voltage further reduces, energy is led to by power network
Supply elevator after over commutation bridge to use, such as the energy stream 4 in Fig. 4.
3）Voltage difference automatic switchover technology is taken in the switching of the passage of energy stream 3 and energy stream 4, and it is as follows to implement principle.
Power network is 380V three-phase alternating currents, becomes the direct current that peak value is 537.4V by rectifier bridge rectified voltage.If frequency converter
DC bus-bar voltage is less than 537.4V, then rectifier bridge is partially ON, and energy flows into frequency converter from external electrical network.If conversely, frequency conversion
The DC bus-bar voltage of device is higher than 537.4V, then rectifier bridge reversely ends, and energy can not flow into frequency converter from external electrical network.Herein
The energy of super capacitor module is monitored, if the energy in super capacitor module is higher than setting value, passes through two-way DC converter 1
By the voltage increase of frequency changer direct current bus to more than 537.4V so that frequency converter rectifier bridge reversely ends, energy needed for elevator
There is provided by energy storage device.If super capacitor module self-energy is less than setting value, two-way DC converter 1 is closed, frequency converter is straight
Stream busbar voltage drops to below 537.4V with energy output, and automatic power network of cutting is powered.Equally, if energy saver occurs
Failure, energy saver is cut off from circuit again by two-way DC converter 1 is closed, elevator is cut power network and supplied automatically
Electricity.Using voltage automatic switchover technology, the seamless automatic switchover of energy saver power supply and the power network power supply of elevator can be effectively realized,
Make the installation of energy saver and use not influence the safety and reliability that elevator uses.
4）When elevator belt carries up, the gravitional force increase of elevator traffic object, elevator needs outwardly to absorb stable state energy
Measure, the information that control circuit is detected according to state of elevator detection circuit, control two-way DC converter 2, it is steady corresponding to driving
State energy flows to super capacitor module from electric discharge battery module, such as the energy stream 6 in Fig. 3 and Fig. 4.Now ascending for elevator, electricity
Ladder externally discharges transient state energy.If elevator is operated in light condition, the steady state energy that elevator externally absorbs is less than externally release
Transient state energy, elevator is operated in regenerative power generation state, and the super capacitor module in energy storage device passes through two-way DC converter 1
Absorb the regeneration energy that elevator discharges.Then underloading escalator up, energy is respectively from electric discharge battery module and elevator frequency converter
Two-way flows to super capacitor module together, such as the energy stream 6 and energy stream 1 in Fig. 3；If elevator heavy duty is up, elevator is externally inhaled
The steady state energy of receipts is more than the transient state energy that externally discharges, and elevator is operated in motoring condition, and energy is from electric discharge battery module stream
To super capacitor module, while energy flows to elevator frequency converter from super capacitor module, such as the energy stream 6 and energy stream in Fig. 4
3.It is required when making to have enough energy power supply ladders descending in super capacitor module by both modes.
5）When elevator belt carries descending, the gravitional force of elevator traffic object is reduced, and elevator needs outwards release steady state energy.
The information that control circuit is detected according to state of elevator detection circuit, controls two-way DC converter 2, stable state energy corresponding to driving
Amount flows to charging accumulator module from super capacitor module, such as the energy stream 5 in Fig. 3 and Fig. 4.Now elevator is descending, elevator pair
Outer absorption transient state energy.If elevator is operated in light condition, the steady state energy that elevator externally discharges is temporary less than externally absorbing
State energy, elevator are operated in motoring condition, and the super capacitor module in energy storage device passes through two-way DC converter 1 and provides elevator
Required energy.Then underloading descending elevator, energy flow to charging accumulator module and elevator variable frequency from super capacitor module respectively
Device, such as the energy stream 5 and energy stream 3 in Fig. 4, if elevator heavy duty is descending, the steady state energy that elevator externally discharges, which is more than, externally to be inhaled
The transient state energy of receipts, elevator are operated in regenerative power generation state, then energy flows to super capacitor module, while energy from elevator frequency converter
Amount flows to charging accumulator module from super capacitor, such as the energy stream 5 and energy stream 1 in Fig. 3.By both modes, make to surpass
There is the transient state energy discharged during enough space storage ascending for elevator in level electric capacity module.
In the specific embodiment of the invention, the energy-saving effect testing scheme of elevator is before and after installation energy saver：In elevator
The point of incoming cables of frequency converter is consumed using the 3169-20/21 clamp power meter test elevator of Japanese HIOKI companies production
Energy consumption, 30% load operation of elevator one back and forth, compare the energy that elevator is consumed before and after this energy saver is accessed.Clamp
Power meter measure access energy saver before and after elevator instantaneous energy consumption as shown in figure 5, total energy consumption as shown in table 1：
Total energy consumption data before and after the elevator of table 1 access energy saver
| Before accessing energy saver | After accessing energy saver | |
| Up energy consumption（J） | 13359 | 12937 |
| Descending energy consumption（J） | 84089 | 40616 |
| Total energy consumption（J） | 97448 | 53553 |
Above is presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, caused function is not
During beyond the scope of technical solution of the present invention, protection scope of the present invention is belonged to.
Claims (8)
- A kind of 1. energy-saving device of elevator based on dual energy memory module, it is characterised in that：Including：Elevator frequency converter, externally fed power network is by elevator frequency converter to elevator supply；Dual energy storage system, the dual energy storage system are parallel to the both ends of elevator frequency converter dc bus；The dual intensity Amount storage system includes the first two-way DC converter, super capacitor module, the second two-way DC converter, the storage being sequentially connected Battery modules；Microprocessing systems, the microprocessor system are used to control dual energy storage system；State of elevator detects circuit, and the state of elevator detection circuit is used to detect elevator operation；The state of elevator inspection Testing result is sent to microprocessing systems by slowdown monitoring circuit；And fault cues and process circuit；The fault cues and process circuit are controlled by microprocessing systems.
- 2. the energy-saving device of elevator according to claim 1 based on dual energy memory module, it is characterised in that：The elevator Frequency converter includes frequency converter rectification circuit, frequency changer direct current bus, inversion circuit and braking resistor circuit；The frequency conversion The input of device rectification circuit connects externally fed power network；It is inverse that frequency converter rectification circuit output through frequency changer direct current bus connects frequency converter Become circuit input；Inversion circuit output connects elevator traction machine；The braking resistor circuit connects with frequency changer direct current bus Connect.
- 3. the energy-saving device of elevator according to claim 1 based on dual energy memory module, it is characterised in that：It is described super The number of electric capacity module, which calculates, to be comprised the following steps：It is most with the external energy exchanged during elevator cars with full load whole process operation, it is assumed that it is：, its InFor the coefficient of balance of elevator, M is that elevator contains amount of substance, and S is lifting height of lift；Single super capacitor voltage change in a charge and discharge process is, the energy of single super capacitor storage is：, C is the value of single electric capacity；The number of super capacitor is needed for super capacitor module：, the number of final super capacitor is TC=tC+b；B is peace Full allowance.
- 4. the energy-saving device of elevator according to claim 1 based on dual energy memory module, it is characterised in that：The electric power storage The number of pond module, which calculates, to be comprised the following steps：When in all personnel Dou buildings, the steady state energy in building is maximum where elevator, is：, m is in building The quality of personnel；H is personnel position and the difference in height of building import and export in building；The energy of single accumulators store is, wherein U is the rated voltage of single battery, and I is single battery Rated current；T is the electric discharge duration of single battery；The required battery number of battery module, the number of final battery is TB=tB+c；C is safety allowance.
- 5. the energy-saving device of elevator according to claim 4 based on dual energy memory module, it is characterised in that：The electric power storage Pond module is made up of two group storage batteries, and two one group of group storage batteries are used to charge, and another group is used to discharge；Stored needed for per group storage battery Electric battery pack number is。
- 6. the energy-saving device of elevator according to claim 1 based on dual energy memory module, it is characterised in that：Described first Two-way DC converter is used for the voltage difference for matching the DC bus-bar voltage of super capacitor group and elevator frequency converter, and second is two-way straight Current converter is used for the voltage difference of matched batteries group and super capacitor group；First two-way DC converter includes 2n switching tube S11 ... Sn1, and switching tube S12 ... Sn2；S11 ... Sn1 one end is connected with dc-link capacitance one end；S11 ... Sn1's is another The one end of one end respectively with inductance L1 ... Ln is connected；S12 ... Sn2 one end difference inductance L1 ... Ln one end connection； S12… Sn2 one end is connected with the dc-link capacitance other end；Inductance L1 ... the Ln other end is homogeneous with super capacitor module one end Connection；The super capacitor module other end is connected with the dc-link capacitance other end；Switching tube S11 ... Sn1, Sn2 is controllable by S 12 ... End is connected with microprocessing systems；The method that control between branch road uses Interleaved control, to reduce the ripple of voltage x current；It is described Second two-way DC converter structure is consistent with the first two-way DC converter structure, and power is different.
- 7. a kind of control method of energy-saving device of elevator as claimed in claim 1 based on dual energy memory module, its feature It is：Comprise the following steps：S1：When elevator is operated in regenerative power generation state, the regenerative electric energy that elevator traction machine is sent passes through inversion electricity After the rectification of road, it is transformed into direct current energy and is stored in the dc bus of frequency converter；State of elevator detects electric circuit inspection to lift boy Make after regenerative power generation state, if the energy in super capacitor module is less than design load, control the first two-way DC converter, Driving energy flows to super capacitor module from dc bus, and super capacitor module absorbs elevator and its object of transport discharges again Raw energy；If super capacitor module self-energy is higher than design load, the first two-way DC converter, frequency changer direct current bus are closed Voltage further after rise, reaches the operation voltage of braking resistor circuit, and braking resistor circuit is accessed frequency converter by control circuit Dc bus, the regeneration energy that consumption elevator discharges, prevents frequency changer direct current bus overtension, ensures that the normal of elevator makes With；S2：When elevator is operated in motoring condition, energy flows to elevator traction machine, frequency changer direct current bus from frequency changer direct current bus Voltage reduce, state of elevator detection electric circuit inspection be operated in motoring condition to elevator after, if super capacitor module self-energy is high In setting value, then the first two-way DC converter is controlled, driving energy flows to dc bus from super capacitor module, then flows to electricity Terraced traction machine, ladder of powering use；If super capacitor module self-energy is less than setting value, the first two-way DC converter is closed, After DC bus-bar voltage further reduces, energy is used by power network by supplying elevator after rectifier bridge；S3：When elevator belt carries up, the gravitional force increase of elevator traffic object, elevator needs outwardly to absorb steady state energy, Control circuit detects the information that is detected of circuit according to state of elevator, controls the second two-way DC converter, steady corresponding to driving State energy flows to super capacitor module from electric discharge battery module；Now ascending for elevator, elevator externally discharge transient state energy；It is if electric Ladder is operated in light condition, and the steady state energy that elevator externally absorbs is less than the transient state energy externally discharged, and elevator is operated in regeneration Generating state, super capacitor module in energy storage device absorb the Regenerated energy that elevator discharges by the first two-way DC converter Amount, then underloading escalator up, energy flow to super capacitor mould together from electric discharge battery module and elevator frequency converter two-way respectively Group；If elevator heavy duty is up, the steady state energy that elevator externally absorbs is more than the transient state energy externally discharged, and elevator is operated in electronic State, energy flows to super capacitor module from electric discharge battery module, while energy flows to elevator variable frequency from super capacitor module Device；S4：When elevator belt carries descending, the gravitional force of elevator traffic object is reduced, and elevator needs outwards release steady state energy, control The information that circuit processed is detected according to state of elevator detection circuit, controls the second two-way DC converter, stable state corresponding to driving Energy flows to charging accumulator module from super capacitor module；Now elevator is descending, and elevator externally absorbs transient state energy；If elevator Light condition is operated in, then the steady state energy that elevator externally discharges is less than the transient state energy externally absorbed, and elevator is operated in electronic State, the super capacitor module in energy storage device flow to elevator frequency converter by the first two-way DC converter；Then underloading is descending Elevator, energy flow to charging accumulator module and elevator frequency converter from super capacitor module respectively；If elevator heavy duty is descending, elevator The steady state energy externally discharged is more than the transient state energy that externally absorbs, and elevator is operated in regenerative power generation state, then energy is from elevator Frequency converter flows to super capacitor module, while energy flows to charging accumulator module from super capacitor.
- 8. the control method of the energy-saving device of elevator according to claim 7 based on dual energy memory module, its feature exist In：The switching of elevator supply passage is by taking voltage difference to automatically switch：If the energy in super capacitor module is higher than setting value, Then by the first two-way DC converter by more than the voltage increase of frequency changer direct current bus to peak value so that frequency converter rectifier bridge Reversely cut-off, energy needed for elevator are provided by energy storage device；If super capacitor module self-energy is less than setting value, first is closed Two-way DC converter, frequency changer direct current bus voltage are dropped to below peak value with energy output, and automatic power network of cutting is supplied Electricity；If energy saver breaks down, energy saver is cut off from circuit again by the first closing two-way DC converter, electricity Terraced automatic incision power network is powered.
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| CN114229634A (en) * | 2021-12-29 | 2022-03-25 | 苏州汇川控制技术有限公司 | Elevator architecture, elevator control method, device and computer readable storage medium |
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