CN106276445B - A kind of elevator drive control, energy saving integrated system and method - Google Patents
A kind of elevator drive control, energy saving integrated system and method Download PDFInfo
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- CN106276445B CN106276445B CN201610846776.4A CN201610846776A CN106276445B CN 106276445 B CN106276445 B CN 106276445B CN 201610846776 A CN201610846776 A CN 201610846776A CN 106276445 B CN106276445 B CN 106276445B
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- elevator
- energy
- traction machine
- control unit
- main control
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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
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
Abstract
The invention discloses a kind of elevator drive control, energy saving integrated system, which uses the main control unit based on two CSTR and FPGA, the information such as acquisition traction machine voltage and current, velocity location, after comprehensive descision, completes to control elevator traction machine.The power supply run simultaneously using supercapacitor group as regenerating braking energy memory device and elevator drive control subsystem, the storage energy in the braking process of elevator subsystem operation.Supercapacitor utilizes elevator signal acquisition unit real-time monitoring elevator operation by the direct parallel connection direct bus of two-way DC converter, main control unit, completes the transformation of super-capacitor module charge and discharge mode, reaches energy saving purpose.The features such as this system makes full use of big supercapacitor discharge current, long service life, the charge and discharge time is short and capacitance density is big, improve energy-saving efficiency and the safety of elevator operation, with very high Social benefit and economic benefit, meet the idea of environmental protection and sustainable development.
Description
Technical field
The invention belongs to elevator applications and energy-saving field, especially a kind of elevator drive control, energy saving integrated system and
Method.
Background technique
As the quickening of urban construction and industrialization degree aggravate, more and more intensive, the high-rise, superelevation of Urban Population Distribution
Layer building continues to bring out, and the demand rapid expansion of elevator, supply falls short of demand for elevator.At the same time, more and more people pay attention to
It arrives, elevator energy consumption problem is a new challenge again.Elevator power consumption accounts for the 17%~25% of whole building total electricity consumption, is only second to
The power consumption of air-conditioning.The braking energy that generates when for deceleration uplink in running process of elevator and accelerating downlink, usually via
Resistance is consumed in the form of thermal energy, not only causes huge energy dissipation in this way, simultaneously because the fever of these energy consumption resistors makes
Environment temperature increases, and causes failure.If the energy of elevator feedback can be recycled, a big chunk energy will be saved,
For huge elevator usage quantity, considerable economic benefit will be generated every year.It can be seen that the exploitation to elevator energy-saving technology
It has a high potential, mean a great.
Have in recent years the elevator energy-saving method centainly developed be braking energy is fed back to power grid, but carry out real-time feedback when,
It is difficult to ensure frequency and phase that feedback energy and AC network are consistent, and the high frequency section in feedback ingredient can be to power grid
Stability generate certain impact, the quality of energy feedback is difficult to ensure.
It is not only facilitated in conclusion being dedicated to development super high speed elevator drive control with energy saving integrated systematic research
The development for pushing domestic elevator energy-saving technology, contributes, and national elevator brand can be improved for national energy conservation and emission reduction
Image promotes further flourishing for domestic elevator industry.With the development of super capacitor technology, provided for elevator energy-saving technology
New developing direction.As novel energy-storing element, capacitance is farad grade, maximum up to hundreds of thousands of farads, super electricity at present
Not only power density is higher for appearance, and charge and discharge are rapid, and its electric energy storage capacity is stronger.In addition super capacitor also has and makes
With flexible, energy relationship is simply convenient for being applied in combination, and operating temperature range is big, can work in the presence of a harsh environment, environmental-friendly nothing
Pollution, long service life are safeguarded the advantages that simple, therefore super capacitor research and application are in recent years by height weight both domestic and external
Depending on.Up to the present, supercapacitor is all developed in countries in the world, and achieves significant achievement, supercapacitor
All kinds of performance indicators all have a big promotion, supercapacitor has obtained widely answering in many fields at present
With.
It is existing at present to use super capacitor as backup power source correlative study, all only using super capacitor as system
Backup power source, capacity usage ratio is not high, and it is integrated with system combine it is not perfect, all use individual controller, it is unfavorable
In elevator drive system own resource, reach highest energy-saving effect.
Summary of the invention
The purpose of the present invention is to provide a kind of elevator drive controls, energy saving integrated system, can be to elevator traction machine
Drive control is carried out, while can sufficiently recycle elevator regenerated braking energy and reach energy saving purpose.
The technical solution for realizing the aim of the invention is as follows: a kind of more traction machines are synchronous to drive elevator control system and side
Method, including AC/DC rectifier, DC bus, DC/AC inverter, traction machine drive system, elevator traction machine, super capacitor group,
Two-way current converter, DC/DC power module, main control unit, elevator operation information acquisition unit, brake unit.It hands over outside
Galvanic electricity Netcom crosses AC/DC rectifier and is connected with DC bus, and DC bus passes through DC/AC inverter and drive and control of electric machine subsystem
System connection, drive and control of electric machine subsystem are connected with elevator traction machine, and wherein AC/DC converter is connected with external communication power grid,
DC bus connects AC/DC converter and DC/AC inverter, and when elevator traction machine is run, external communication power grid is become by AC/DC
Parallel operation, DC/AC converter provide energy to traction machine drive system.Elevator operation information acquisition unit drives with traction machine respectively
System is connected with elevator traction machine, the information such as voltage, electric current, speed, position when acquisition elevator is run, and and main control unit
It is connected, Xiang Shangshu elevator operation information is sent to main control unit, and main control unit takes decision according to above- mentioned information comprehensive descision, leads to
It crosses DSP and programmable logic device FPGA controls traction machine drive system, traction machine drive system drives elevator to drag
Draw machine operation；Supercapacitor group is connected by DC/DC converter with DC bus, and supercapacitor group is converted by DC/DC
Device absorbs and stores the braking energy generated in elevator traction machine operational process, and will storage under elevator traction machine motoring condition
Energy feedback；Two-way DC/DC converter is connected with main control unit, and main control unit acquires super according to signal sample circuit
The operating parameter signal of capacitor group and two-way DC/DC converter, and in the system controller by signal storage；System control
Device processed by the operation information comprehensive descision of the output signal of elevator operation information acquisition unit and two-way DC/DC converter come
DC/DC converter is controlled, to control the charge and discharge of supercapacitor group.DC/DC power module is from DC bus
DC voltage is obtained, and is connected with main control unit, provides operating voltage for it, when external grid collapses have a power failure, energy
Enough using the energy of super capacitor group storage, main control unit operation is maintained, main control unit issues fault alarm, completes power-off
Preceding in-situ FTIR spectroelectrochemitry is switched to urgent leveling working condition, drives system to traction machine using the energy of supercapacitor group storage
System is controlled, and realizes the steady safe operation of elevator traction machine.Main control unit connects brake unit, and emergency is occurring
When by band-type brake by traction machine locking.
Compared with prior art, the present invention its remarkable advantage are as follows: (1) present invention is using elevator traction machine driving and super electricity
The overall-in-one control schema of molar group, main control unit adds the framework of FPGA using two CSTR, faster more efficient to external signal processing, right
Traction machine control is more flexible, rapider to fault-signal processing, and the information of acquisition is more, and integrated decision-making is more reasonable, to super
The management of charging and discharging more precise and high efficiency of grade electric capacity module；(2) present invention makes full use of supercapacitor heavy-current discharge, capacitor
The features such as density is high, power density is big, long service life and charge and discharge time are short, stores elevator subsystem regenerative braking energy
Amount, energy-saving effect are fairly obvious；(3) present invention is by storage elevator subsystem regenerating braking energy, and supercapacitor group is outside
Portion's AC network can be used as the backup power source of elevator drives subsystem normal operation when powering off, guarantee main control unit power supply, dimension
The signal collecting and controlling to whole system is held, while being powered for traction machine drive system, guarantees the urgent leveling of elevator, improves
The safety of elevator device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of elevator drive control of the present invention, energy saving integrated system.
Fig. 2 is the two-way DC/DC converter equivalent circuit diagram of elevator drive control of the present invention, energy saving integrated system.
Fig. 3 is the two-way equivalent electricity of DC/DC converter decompression mode of elevator drive control of the present invention, energy saving integrated system
Lu Tu, wherein scheming a) for Boost schematic diagram, figure is b) S closure equivalent schematic diagram；Figure c) turns off equivalent schematic diagram for S；
Figure d) is voltage oscillogram.
Fig. 4 is the two-way DC/DC converter boost mode equivalent electricity of elevator drive control of the present invention, energy saving integrated system
Lu Tu, wherein scheming a) for Boost schematic diagram, figure is b) S closure equivalent schematic diagram；Figure c) turns off equivalent schematic diagram for S；
Figure d) is voltage oscillogram.
Fig. 5 is elevator drive control of the present invention, energy saving integrated system control principle drawing.
Fig. 6 is the main control unit structural schematic diagram of elevator drive control of the present invention, energy saving integrated system.
System power flow graph when Fig. 7 is elevator drive control of the present invention, the power supply of energy saving integrated exterior power grid.
System power flow graph when Fig. 8 elevator drive control of the present invention, the power supply of energy saving integrated system super capacitor group.
Specific embodiment
In conjunction with Fig. 1, a kind of elevator drive control of the invention, energy saving integrated system, including AC/DC rectifier 2, direct current
Bus 3, DC/AC inverter 4, traction machine drive system 6, elevator traction machine 7, super capacitor group 11, two-way current converter 8,
DC/DC power module 5, main control unit 9, elevator operation information acquisition unit 10, brake unit 12；
External communication power grid 1 is connected by AC/DC rectifier 2 with DC bus 3, and DC bus 3 passes through DC/AC inverter
4 connect with drive and control of electric machine subsystem 6, and drive and control of electric machine subsystem 6 is connected with elevator traction machine 7, and wherein AC/DC is converted
Device 2 is connected with external communication power grid 1, and DC bus connects AC/DC converter 2 and DC/AC inverter 4, and elevator traction machine 7 is run
When, external communication power grid 1 provides energy to traction machine drive system 6 by AC/DC converter 2, DC/AC converter 4；Elevator fortune
Row information acquisition unit 10 is connected with traction machine drive system 6 and elevator traction machine 7 respectively, acquisition elevator operation when voltage,
Electric current, speed, location information, and be connected with main control unit 9, above-mentioned elevator operation information is sent to main control unit 9, master control
Unit 9 controls traction machine drive system 6 by two CSTR and programmable logic device FPGA according to above- mentioned information, drags
Draw machine drive system 6 and drives elevator traction machine operation；Supercapacitor group 11 passes through DC/DC converter 8 and 3 phase of DC bus
Even, supercapacitor group 11 absorbs by DC/DC converter 8 and stores the Brake Energy generated in 7 operational process of elevator traction machine
Amount, and by the energy feedback of storage under 7 motoring condition of elevator traction machine；Two-way DC/DC converter 8 and 9 phase of main control unit
Even, main control unit 9 acquires the operating parameter of supercapacitor group 11 and two-way DC/DC converter 8 according to signal sample circuit
Signal, and the signal is stored in system controller 9；System controller 9 passes through elevator operation information acquisition unit 10
The operation information comprehensive descision of output signal and two-way DC/DC converter 8 controls DC/DC converter 8, thus to super electricity
The charge and discharge of container group 11 are controlled；DC/DC power module 5 obtains DC voltage from DC bus 3, and with main control list
Member 9 is connected, and provides operating voltage for it, when external electrical network 1 breaks down and has a power failure, utilizes the energy of the storage of super capacitor group 11
Amount maintains main control unit 9 to run, and main control unit 9 issues fault alarm, the in-situ FTIR spectroelectrochemitry before completing power-off, is switched to tight
Anxious leveling working condition controls traction machine drive system 6 using the energy that supercapacitor group 11 stores, and realizes elevator
The steady safe operation of traction machine 7, main control unit 9 connect brake unit 12, will be draged when emergency occurs by band-type brake
Draw machine locking.
The main control unit 9 acquires elevator drives subsystem and elevator energy-saving subsystem using two CSTR and FPGA as core
Information, DC/DC converter 8 and traction machine drive system 6 are controlled respectively, realize elevator drive control；
Main control unit 9 include main DSP module, from DSP module, FPGA module signal sample circuit, signal conditioning circuit,
Auxiliary power circuit, driving circuit respectively pass elevator operation information acquisition unit 10 by signal sample circuit and conditioning circuit
The signal of sensor output is handled, and is as a result exported and is handled to DSP and FPGA module, and FPGA realizes the number of two CSTR module
Fault-signal is handled according to exchange and SPI communication, FPGA module, is obtained according to each sensor signal that trailing cable obtains
Relay output control signal, DSP obtain traction by control algolithm according to information such as traction machine speed, position, voltage and currents
Machine control decision signal completes the control to traction machine drive system 6.
The main control unit 9 is by sample circuit to the voltage of external AC network 1 and the voltage of supercapacitor group
Electric current is sampled, and sampled result is exported to dsp chip, and auxiliary power circuit is connected with sample circuit and dsp chip respectively,
Play the role of power supply, the sampled signal and acquire to elevator operation information that main control unit 9 is inputted by sample circuit
The information collection of unit 10, DSP control the full controllable devices in DC/DC converter 8 by driving circuit, realize super capacitor group
11 charge and discharge.
The external electrical network 1 breaks down when having a power failure, and the energy that system utilizes super capacitor group 11 to store passes through DC/DC
Power module 5 maintains main control unit 9 to run, and main control unit 9 issues fault alarm, and the in-situ FTIR spectroelectrochemitry before completing power-off is cut
Urgent leveling working condition is changed to, traction machine drive system 6 is controlled using the energy that supercapacitor group 11 stores, it is real
The steady safe operation of existing elevator traction machine 7.
A method of based on above-mentioned elevator drive control, energy saving integrated system, comprising the following steps:
Whether step 1, main control unit (9) detection external electrical network are normal, then follow the steps 2 if normal, otherwise execute step
Rapid 7；
Main DSP in step 2, main control unit (9) receives the command information of car top work station, and comprehensive trailing cable is defeated
The elevator control signals entered, and then update the speed command from DSP module；
Step 3, from DSP module mainly according to elevator operation information acquisition unit acquisition elevator run when voltage, electricity
The instruction comprehensive descision of the information such as stream, speed, position and main DSP take decision, realize the speed control of traction machine；
Step 4, main control unit acquire the voltage and current information of the input/output terminal of two-way DC/DC converter, decision section
The working condition of energy system executes step 5 if elevator operation is in the braking state, if elevator work executes step in motoring condition
6；
Step 5, in conjunction with Fig. 2 bi-directional half bridge formula Buck/Boost converter principle figure, S2Work in PWM state, S1Cut-off,
Converter work is in decompression mode, i.e. Buck circuit, shown in equivalent circuit diagram such as Fig. 3 (a).During conducting (ton): switching tube is led
Logical, diode D reversely ends, inductance storage energy.Shown in its equivalent circuit such as Fig. 3 (b).During shutdown (toff): switching tube
Shutdown, diode D forward conduction, inductance release energy.Shown in its equivalent circuit such as Fig. 3 (c).It is exported by waveform diagram 3 (d)
Voltage UoAverage value are as follows:
PWM duty cycle by adjusting DSP output adjusts output voltage, realizes bus for super capacitor group charging.
Step 6, S1Work in PWM state, S2Shutdown, converter work in boost mode, i.e. Boost circuit, equivalent circuit
Figure is as shown in Fig. 4 (a).During conducting (ton): switch device conductive, diode D reversely end, and inductance storage energy, power supply stops
Energy only is provided to load resistance R, energy is provided by capacitor C.Shown in its equivalent circuit such as Fig. 4 (b).During shutdown (toff):
Switching device shutdown, diode D forward conduction, inductance releases energy, and power supply and inductance are that load R provides energy, and to electricity
Hold C charging.Shown in its equivalent circuit such as Fig. 4 (c).By waveform diagram 4 (d) it is found that output voltage U can be obtained by integral equationoIt is flat
Mean value:
PWM duty cycle by adjusting DSP output adjusts output voltage and provides energy for elevator operation.
Step 7, when external electrical network 1 breaks down and has a power failure, using super capacitor group 11 store energy, pass through DC/DC
Power module 5 is powered for main control unit 9, and main control unit 9 issues fault alarm, the in-situ FTIR spectroelectrochemitry before completing power-off, switching
To urgent leveling working condition, traction machine drive system 6 is controlled using the energy that supercapacitor group 11 stores, is realized
The even running of elevator traction machine 7, safe leveling.
Present invention is further described in detail with reference to the accompanying drawing.
Main control unit in elevator drive control of the present invention, energy saving integrated system adds FPGA as system using two CSTR
The core of system controller, completes the decision and control of integral system, according to the information that other subsystems are fed back, realizes to elevator
The control of speed, the position of traction machine etc., while the voltage and current information of the input/output terminal of two-way DC/DC converter is acquired,
The working condition of decision energy conserving system.
Elevator drive control of the present invention, energy saving integrated system are powered basis in existing elevator device external communication power grid
On, increase supercapacitor group, two-way DC/DC converter, main control unit.In the braking process of elevator subsystem operation
In, regenerating braking energy is stored into supercapacitor group by two-way DC/DC converter, is stored in supercapacitor group
Energy can be used as accessory power supply of the elevator under motoring condition, while backup power source in emergency circumstances can be played, protected
Demonstrate,prove elevator device operation.
Elevator drive control of the present invention, the specific composition of energy saving integrated system are as follows:
It is driven according to the design scheme of drive control of the present invention, energy saving integrated system with traditional elevator in conjunction with Fig. 1
System is compared, and is used to store the energy during elevator brake invention increases super capacitor mould group, while increased two-way
DC/DC converter is used to control the charge and discharge of super capacitor mould group.Compared with the super capacitor energy-saving scheme proposed in recent years, this
Invention uses integrated design, and main control unit had both realized the control of the speed to elevator traction machine, position etc., while acquiring double
To the voltage and current information of the input/output terminal of DC/DC converter, the working condition of decision energy conserving system.
Two-way DC/DC converter 8: in conjunction with Fig. 2, two-way DC/DC converter 8 realizes the charge and discharge to supercapacitor group,
The DC/DC converter 8 uses bi-directional half bridge formula BOOST/BUCK converter, chooses IGBT as switching device.Bi-directional half bridge formula
Buck/Boost converter principle figure is as shown in Figure 2.When converter forward direction works, S1Work in PWM state, S2Shutdown, circuit etc.
It imitates in Boost circuit；When reverse operation, S2Work in PWM state, S1Cut-off, circuit equivalent is in BUCK circuit.
In conjunction with Fig. 3, converter works in decompression mode, i.e. BUCK circuit, shown in equivalent circuit diagram such as Fig. 3 (a).Conducting
Period (ton): switching tube conducting, diode D reversely end, inductance storage energy.Shown in its equivalent circuit such as Fig. 3 (b).Shutdown
Period (toff): switching tube shutdown, diode D forward conduction, inductance release energy.Shown in its equivalent circuit such as Fig. 3 (c).By
Waveform diagram 3 (d) is it is found that output voltage UoAverage value can cross integral equation and can obtain:
In conjunction with Fig. 4, when the work of bi-directional half bridge formula Buck/Boost converter is in pressure-increasning state, equivalent circuit diagram such as Fig. 4
(a) shown in.During conducting (ton): switch device conductive, diode D reversely end, inductance storage energy, and power supply stops to negative
It carries resistance R and energy is provided, energy is provided by capacitor C.Shown in its equivalent circuit such as Fig. 4 (b).During shutdown (toff): derailing switch
Part shutdown, diode D forward conduction, inductance release energy, and power supply and inductance are that load R provides energy, and fills to capacitor C
Electricity.Shown in its equivalent circuit such as Fig. 4 (c).By waveform diagram 4 (d) it is found that output voltage U can be obtained by integral equationoAverage value:
In conjunction with Fig. 5, in order to reach the accurate control to energy conserving system control parameter, the present invention is closed using cascade PID realization
Ring control.According to the actual working state of energy conserving system, DC-DC module is in Buck mode or Boost mode, is arranged two groups
Different pid parameters meets the demand for control of both modes.DC-DC module is working in Buck mode or Boost mode
When by the control of the charging and discharging currents of super capacitor in a certain range.Energy conserving system controller uses electric current loop for inner ring, electricity
Pressure ring is outer ring, the output of Voltage loop is carried out amplitude control, the charge and discharge in energy conserving system initial launch, to super capacitor
Electric current is limited, and damage of the biggish charging and discharging currents to super capacitor is prevented.
System controller 9: in conjunction with Fig. 6, the main control unit 9 of system respectively drives elevator using two CSTR and FPGA as core
Subsystem and elevator energy-saving subsystem are controlled, and system controller 9 includes master/slave DSP module, FPGA module signal sampling
Circuit, signal conditioning circuit, auxiliary power circuit, driving circuit.Auxiliary power circuit connects each electricity consumption module and plays power supply
Power supply effect.Electricity when signal sample circuit and signal conditioning circuit run the acquisition elevator of elevator operation information acquisition unit
The information such as pressure, electric current, speed, position are improved into DSP and FPGA acceptable signal, while by sample circuit to outside
The voltage of AC network and the voltage and current of supercapacitor group are sampled, and sampled result is exported to from dsp chip.It is main
DSP module is mainly used for receiving the command information of car top work station, and the elevator control signals of comprehensive trailing cable input, in turn
Update the speed command from DSP module；When mainly being run from DSP module according to the acquisition elevator of elevator operation information acquisition unit
The information such as voltage, electric current, speed, position and the instruction comprehensive descision of main DSP take decision, realized according to control algolithm
Full controllable devices in the speed control of traction machine, and control DC/DC converter, realize the charge and discharge of super capacitor group；
The elevator control signals that FPGA module is mainly inputted according to trailing cable obtain patrolling by force for integral system by logical process
Collect the SPI communication between output signal and principal and subordinate DSP.
In conjunction with Fig. 7, when external communication power grid 1 is that elevator subsystem 7 is powered, converted by AC/DC converter 2 and DC/AC
Device 4 is by alternating current input traction machine drive system 6 and then elevator traction machine 7 is driven to operate.DC/DC power module 5 is from straight simultaneously
Stream bus directly takes electricity to work for main control unit 9.
In conjunction with Fig. 8, when elevator brake state, will generate braking energy, by and his like bus 3 and DC/DC converter 8 will again
Raw feeding braking energy back is stored in supercapacitor group.When elevator operates in motoring condition or external electrical network powers off, while DC/
DC power module 5 directly takes electricity to work for main control unit 9 from DC bus.
Therefore, supercapacitor group of the present invention and corresponding pressure-equalizing device advantage mainly have: 1) supercapacitor
The high capacity of itself, heavy-current discharge characteristic, the energy of storage are enough to provide required peak power for elevator, reduce
To the class requirement and load of power grid；2) advantage that the super capacitor service life is long and the charge and discharge time is short is played；3) super electricity
The use of appearance will not cause environment seriously to pollute.
Furthermore the present invention by display module 10 can be intuitively displayed the real-time voltage of supercapacitor group, real-time current,
The change curve and the real-time charge-discharge energy of supercapacitor group and feedback braking energy of voltage and current, can more added with
The instantaneous working condition of the grasp supercapacitor group of effect.
From the foregoing, it will be observed that a kind of elevator drive control of the invention, energy saving integrated system, which, which uses, is based on two CSTR
With the main control unit of FPGA, traction machine voltage and current, the information such as velocity location are acquired, after comprehensive descision, complete to elevator traction
Machine control.It is run simultaneously using supercapacitor group as regenerating braking energy memory device and elevator drive control subsystem
Power supply, the storage energy in the braking process of elevator subsystem operation.Supercapacitor is straight by two-way DC converter
Parallel connection direct bus is connect, main control unit utilizes elevator signal acquisition unit real-time monitoring elevator operation, completes super capacitor
The transformation of module charge and discharge mode reaches energy saving purpose.This system can be the case where external electrical network catastrophic failure can not power
Under, it using super capacitor as backup power supply, realizes urgent leveling after power-off, improves security of system.This system makes full use of
Supercapacitor discharge current is big, long service life, the features such as charge and discharge time is short and capacitance density is big, improves elevator operation
Energy-saving efficiency and safety, have very high Social benefit and economic benefit, meet environmental protection and sustainable development idea.
The present invention is designed by allomeric function and greatly plays the advantages of supercapacitor group, and system is to supercapacitor group
Charge and discharge control is carried out, its work is controlled by system, control circuit and shows the work of supercapacitor group using display module
State, by system controller control power supply control switching circuit realize external communication power grid be elevator subsystem operation power supply and
Supercapacitor group is to switch over selection between the operation power supply of elevator subsystem.It is simultaneously super by energy feedback control circuit
Energy provides another option in grade capacitor group: will be in supercapacitor group outside energy feedback using energy feedback subsystem
Portion's AC network guarantees that energy conservation maximizes.
Claims (4)
1. a kind of elevator drive control, energy saving integrated system, which is characterized in that including AC/DC rectifier (2), DC bus
(3), DC/AC inverter (4), traction machine drive system (6), elevator traction machine (7), supercapacitor group (11), two-way DC/DC
Converter (8), DC/DC power module (5), main control unit (9), elevator operation information acquisition unit (10), brake unit
(12)；
External communication power grid (1) is connected by AC/DC rectifier (2) with DC bus (3), and DC bus (3) is inverse by DC/AC
Become device (4) to connect with traction machine drive system (6), traction machine drive system (6) is connected with elevator traction machine (7), wherein AC/DC
Rectifier (2) is connected with external communication power grid (1), and DC bus connects AC/DC rectifier (2) and DC/AC inverter (4), electricity
When terraced traction machine (7) runs, external communication power grid (1) is driven by AC/DC rectifier (2), DC/AC inverter (4) to traction machine
Dynamic system (6) provide energy；Elevator operation information acquisition unit (10) respectively with traction machine drive system (6) and elevator traction machine
(7) it is connected, voltage, electric current, speed, location information when acquisition elevator is run, and be connected with main control unit (9), it will be above-mentioned
Elevator operation information is sent to main control unit (9), and main control unit (9) by two CSTR and may be programmed according to above- mentioned information
Logical device FPGA controls traction machine drive system (6), and traction machine drive system (6) drives elevator traction machine operation；
Supercapacitor group (11) is connected by two-way DC/DC converter (8) with DC bus (3), and supercapacitor group (11) passes through
Two-way DC/DC converter (8) absorbs and stores the braking energy generated in elevator traction machine (7) operational process, and drags in elevator
Draw the energy feedback of storage under machine (7) motoring condition；Two-way DC/DC converter (8) is connected with main control unit (9), master control
Unit (9) processed is believed according to the operating parameter that signal sample circuit acquires supercapacitor group (11) and two-way DC/DC converter (8)
Number, and the signal is stored in main control unit (9)；Main control unit (9) passes through elevator operation information acquisition unit
(10) the operation information comprehensive descision of output signal and two-way DC/DC converter (8) controls two-way DC/DC converter
(8), to control the charge and discharge of supercapacitor group (11)；DC/DC power module (5) is obtained from DC bus (3)
DC voltage is taken, and is connected with main control unit (9), operating voltage is provided for it, breaks down and stop in external AC network (1)
When electric, the energy stored using supercapacitor group (11) maintains main control unit (9) operation, and main control unit (9) issues event
Barrier alarm, the in-situ FTIR spectroelectrochemitry before completing power-off, is switched to urgent leveling working condition, utilizes supercapacitor group (11) storage
Energy controls traction machine drive system (6), realizes the steady safe operation of elevator traction machine (7), main control unit (9)
It connects brake unit (12), passes through band-type brake when emergency occurs for traction machine locking；
The main control unit (9) acquires elevator drives subsystem and elevator energy-saving subsystem using two CSTR and FPGA as core
Information is respectively controlled two-way DC/DC converter (8) and traction machine drive system (6), realizes elevator drive control；
Main control unit (9) includes main DSP module, from DSP module, FPGA module signal sample circuit, signal conditioning circuit, auxiliary
Power circuit, driving circuit are helped, elevator operation information acquisition unit (10) is respectively passed by signal sample circuit and conditioning circuit
The signal of sensor output is handled, and is as a result exported and is handled to DSP and FPGA module, and FPGA realizes the number of two CSTR module
Fault-signal is handled according to exchange and SPI communication, FPGA module, is obtained according to each sensor signal that trailing cable obtains
Relay output control signal, DSP obtain traction by control algolithm according to information such as traction machine speed, position, voltage and currents
Machine control decision signal completes the control to traction machine drive system (6).
2. elevator drive control according to claim 1, energy saving integrated system, which is characterized in that main control unit (9)
The voltage of external AC network (1) and the voltage and current of supercapacitor group are sampled by sample circuit, sampling is tied
Fruit exports to dsp chip, and auxiliary power circuit is connected with sample circuit and dsp chip respectively, plays the role of power supply, master control
The sampled signal that unit (9) processed is inputted by sample circuit and the information collection to elevator operation information acquisition unit (10),
DSP controls the full controllable devices in two-way DC/DC converter (8) by driving circuit, realizes filling for supercapacitor group (11)
Electric discharge.
3. elevator drive control according to claim 1, energy saving integrated system, which is characterized in that external communication power grid
(1) it breaks down when having a power failure, system utilizes the energy of supercapacitor group (11) storage, passes through DC/DC power module (5) and maintains
Main control unit (9) operation, main control unit (9) issue fault alarm, the in-situ FTIR spectroelectrochemitry before completing power-off, are switched to urgent flat
Layer working condition, controls traction machine drive system (6) using the energy that supercapacitor group (11) store, and realizes elevator
The steady safe operation of traction machine (7).
4. a kind of method based on elevator drive control, energy saving integrated system described in claim 1, which is characterized in that including
Following steps:
Whether step 1, main control unit (9) detection external communication power grid are normal, then follow the steps 2 if normal, otherwise execute step
Rapid 7；
The command information of main DSP reception car top work station in step 2, main control unit (9), and comprehensive trailing cable input
Elevator control signals, and then update the speed command from DSP module；
Voltage, electric current, speed when step 3, the elevator acquired from DSP module according to elevator operation information acquisition unit are run,
The instruction of location information and main DSP are handled, and realize the speed control of traction machine；
Step 4, main control unit acquire the voltage and current information of the input/output terminal of two-way DC/DC converter, judge energy saving system
The working condition of system executes step 5 if elevator operation is in the braking state, if elevator work executes step 6 in motoring condition；
Step 5, in conjunction with bi-directional half bridge formula Buck/Boost converter principle, S2Work in PWM state, S1Cut-off, converter work
In decompression mode, i.e. Buck circuit；During conducting (ton): switching tube conducting, diode D reversely end, inductance storage energy；
During shutdown (toff): switching tube shutdown, diode D forward conduction, inductance release energy, output voltage UoAverage value are as follows:
PWM duty cycle by adjusting DSP output adjusts output voltage, realizes bus for the charging of supercapacitor group；TsFor conducting
The temporal summation of (toff), u during period (ton) and shutdown0For the voltage at the both ends load resistance R；
Step 6, S1Work in PWM state, S2Shutdown, converter work in boost mode, i.e. Boost circuit；During conducting
(ton): switch device conductive, diode D reversely end, inductance storage energy, and power supply stops providing energy to load resistance R,
Energy is provided by capacitor C；During shutdown (toff): switching device shutdown, diode D forward conduction, inductance release energy, power supply
It is that load R provides energy, and charges to capacitor C with inductance；Output voltage U can be obtained by integral equationoAverage value:
PWM duty cycle by adjusting DSP output adjusts output voltage and provides energy for elevator operation；
Step 7, when external AC network (1) breaks down and has a power failure, using supercapacitor group (11) store energy, pass through
DC/DC power module (5) is powered for main control unit (9), and main control unit (9) issues fault alarm, showing before completing power-off
Field is restored, and urgent leveling working condition is switched to, using the energy of supercapacitor group (11) storage to traction machine drive system
(6) it is controlled, realizes the even running of elevator traction machine (7), safe leveling.
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