CN106276445A - A kind of elevator drives control, energy saving integrated system and method - Google Patents

A kind of elevator drives control, energy saving integrated system and method Download PDF

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Publication number
CN106276445A
CN106276445A CN201610846776.4A CN201610846776A CN106276445A CN 106276445 A CN106276445 A CN 106276445A CN 201610846776 A CN201610846776 A CN 201610846776A CN 106276445 A CN106276445 A CN 106276445A
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China
Prior art keywords
elevator
energy
traction machine
main control
control unit
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CN201610846776.4A
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CN106276445B (en
Inventor
郭健
朱孟韬
吴益飞
杨杰
沈宏丽
陈庆伟
樊卫华
李胜
汤冯伟
林立斌
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00Control systems of elevators in general
    • B66B1/24Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30Control 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027Applications 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel 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 and drive control, energy saving integrated system, this system uses based on two CSTR and the main control unit of FPGA, gathers the information such as traction machine voltage x current, velocity location, after comprehensive descision, completes elevator traction machine control.Use bank of super capacitors to drive as regenerating braking energy memory device and elevator simultaneously and control the power supply that subsystem runs, the braking procedure that elevator subsystem runs stores energy.Ultracapacitor passes through two-way DC converter direct parallel connection direct bus, and main control unit utilizes elevator signal collecting unit to monitor elevator operation in real time, completes the transformation of super-capacitor module charge and discharge mode, reaches energy-conservation purpose.The features such as native system makes full use of that ultracapacitor discharge current is big, length in service life, discharge and recharge time are short and capacitance density is big, improve energy-saving efficiency and safety that elevator runs, there is the highest Social benefit and economic benefit, meet the idea of environmental protection and sustainable development.

Description

A kind of elevator drives control, energy saving integrated system and method
Technical field
The invention belongs to elevator applications and energy-saving field, particularly a kind of elevator drive control, energy saving integrated system and Method.
Background technology
Along with the quickening of urban construction and industrialization degree aggravation, Urban Population Distribution more and more intensive, high-rise, superelevation Continuing to bring out of layer building, the demand rapid expansion of elevator, supply falls short of demand for elevator.Meanwhile, increasing people notes Arriving, elevator energy consumption problem is again a new challenge.Elevator power consumption accounts for the 17%~25% of whole building total electricity consumption, is only second to The power consumption of air-conditioning.For the braking energy that is up and that produce when accelerating descending that slows down in running process of elevator, it is common that via Resistance consumes with the form of heat energy, the most not only causes huge energy dissipation, simultaneously because the heating of these energy consumption resistors makes Ambient temperature raises, and causes fault.If the energy of elevator feedback can be recycled, energy greatly can be saved, For huge elevator usage quantity, considerable economic benefit will be produced every year.The visible exploitation to elevator energy-saving technology Have a high potential, mean a great.
The elevator energy-saving method having certain development in recent years is that braking energy feeds back electrical network, but when carrying out real-time feedback, It is difficult to ensure that feedback energy keeps the radio-frequency head branch in consistent frequency and phase place, and feedback composition to electrical network with AC network Stability produce certain impact, the difficult quality guarantee of energy feedback.
In sum, being devoted to develop super high speed elevator drives control to not only facilitate with energy saving integrated systematic research Promote the development of domestic elevator energy-saving technology, reduce discharging contributing for national energy-saving, and national elevator brand can be improved Image, promotes the most flourish of domestic elevator industry.Along with the development of super capacitor technology, provide for elevator energy-saving technology New developing direction.As novel energy-storing element, capacitance is farad level, the most maximum up to hundreds thousand of farads, super electricity Holding not only power density higher, discharge and recharge is rapid, and its electrical power storage ability is stronger.Additionally super capacitor also has and makes With flexibly, energy relationship is simply easy to be applied in combination, and operating temperature range is big, can work in the presence of a harsh environment, environmental friendliness without Polluting, service life is long, safeguards the advantages such as simple, and therefore super capacitor research and application are in recent years by height weight both domestic and external Depending on.Up to the present, ultracapacitor is all developed by countries in the world, and achieves significant achievement, ultracapacitor All kinds of performance indications had and significantly promoted, current ultracapacitor has obtained in a lot of fields widely should With.
Current existing employing super capacitor, as stand-by power supply correlational study, is all as system using super capacitor Stand-by power supply, capacity usage ratio is the highest, and combines imperfection with the integrated of system, all uses single controller, unfavorable In elevator drive system own resource, reach the highest energy-saving effect.
Summary of the invention
It is an object of the invention to provide a kind of elevator and drive control, energy saving integrated system, it is possible to elevator traction machine Being driven controlling, can fully reclaim elevator regenerated braking energy reaches energy-conservation purpose simultaneously.
The technical solution realizing the object of the invention is: a kind of many traction machines synchronize to drive apparatus for controlling elevator and side Method, including AC/DC commutator, 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 collecting unit, brake unit.Outside friendship Stream electrical network is connected with dc bus by AC/DC commutator, and dc bus is by DC/AC inverter and drive and control of electric machine subsystem System connects, and drive and control of electric machine subsystem is connected with elevator traction machine, and wherein AC/DC changer is connected with external communication electrical network, Dc bus connects AC/DC changer and DC/AC inverter, and when elevator traction machine runs, external communication electrical network is become by AC/DC Parallel operation, DC/AC changer provide energy to traction machine drive system.Elevator operation information collecting unit drives with traction machine respectively System is connected with elevator traction machine, gathers the information such as voltage when elevator runs, electric current, speed, position, and and main control unit Being connected, be sent to main control unit to above-mentioned elevator operation information, main control unit judges to take decision-making according to above-mentioned informix, logical Crossing DSP and PLD FPGA to be controlled traction machine drive system, traction machine drive system drives elevator to drag Draw machine to run;Bank of super capacitors is connected with dc bus by DC/DC changer, and bank of super capacitors is converted by DC/DC The braking energy that device absorbs and produces in storage elevator traction machine running, and will storage under elevator traction machine motoring condition Energy feedback;Two-way DC/DC changer is connected with main control unit, and main control unit gathers super according to signal sample circuit Capacitor banks and the operating parameter signal of two-way DC/DC changer, and described signal is stored in the system controller;System control Device processed is come by the output signal of elevator operation information collecting unit and the operation information comprehensive descision of two-way DC/DC changer Control DC/DC changer, thus the discharge and recharge to bank of super capacitors is controlled.DC/DC power module is from dc bus Obtain DC voltage, and be connected with main control unit, provide running voltage for it, when outside grid collapses has a power failure, energy Enough utilizing the energy that super capacitor group stores, maintain main control unit to run, main control unit sends fault alarm, completes power-off Front in-situ FTIR spectroelectrochemitry, is switched to urgent flat bed duty, utilizes the energy that bank of super capacitors stores to traction machine drivetrain System is controlled, it is achieved the steady safe operation of elevator traction machine.Main control unit connects brake unit, and emergency is occurring Time by band-type brake by traction machine locking.
Compared with prior art, its remarkable advantage is the present invention: (1) present invention uses elevator traction machine to drive and super electricity The overall-in-one control schema of molar group, main control unit uses the framework that two CSTR adds FPGA, the most more efficient to outside signal processing, right Traction machine controls more flexible, processes fault-signal rapider, and the information of collection is more, and integrated decision-making is more reasonable, to super The management of charging and discharging more precise and high efficiency of level electric capacity module;(2) present invention makes full use of ultracapacitor heavy-current discharge, electric capacity Density is high, power density big, length in service life and the feature such as the discharge and recharge time is short, stores elevator subsystem regenerative braking energy Amount, energy-saving effect is fairly obvious;(3) present invention is by storage elevator subsystem regenerating braking energy, and bank of super capacitors is outside The properly functioning stand-by power supply of subsystem can be driven as elevator, it is ensured that main control unit is powered, dimension during portion's AC network power-off Hold the signal collecting and controlling to whole system, power for traction machine drive system simultaneously, it is ensured that the urgent flat bed of elevator, improve The safety of elevator device.
Accompanying drawing explanation
Fig. 1 is that elevator of the present invention drives control, the structural representation of energy saving integrated system.
Fig. 2 is that elevator of the present invention drives control, the two-way DC/DC changer equivalent circuit diagram of energy saving integrated system.
Fig. 3 is that elevator of the present invention drives control, the two-way DC/DC changer decompression mode equivalent electric of energy saving integrated system Lu Tu, wherein schemes a) to be Boost schematic diagram, and figure is b) that S closes equivalent schematic diagram;Figure is c) that S turns off equivalent schematic diagram; Figure is d) voltage oscillogram.
Fig. 4 is the two-way DC/DC converter boost mode equivalent electricity that elevator of the present invention drives control, energy saving integrated system Lu Tu, wherein schemes a) to be Boost schematic diagram, and figure is b) that S closes equivalent schematic diagram;Figure is c) that S turns off equivalent schematic diagram; Figure is d) voltage oscillogram.
Fig. 5 is that elevator of the present invention drives control, energy saving integrated system control principle drawing.
Fig. 6 is that elevator of the present invention drives control, the main control unit structural representation of energy saving integrated system.
Fig. 7 be elevator of the present invention drive control, energy saving integrated its exterior electrical network system power flow graph when powering.
System power flow graph when Fig. 8 elevator of the present invention drives control, energy saving integrated system super capacitor group to power.
Detailed description of the invention
In conjunction with Fig. 1, a kind of elevator of the present invention drives control, energy saving integrated system, including AC/DC commutator 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 collecting unit 10, brake unit 12;
External communication electrical network 1 is connected with dc bus 3 by AC/DC commutator 2, and dc bus 3 is by DC/AC inverter 4 are connected 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, wherein AC/DC conversion Device 2 is connected with external communication electrical network 1, and dc bus connects AC/DC changer 2 and DC/AC inverter 4, and elevator traction machine 7 runs Time, external communication electrical network 1 provides energy to traction machine drive system 6 by AC/DC changer 2, DC/AC changer 4;Elevator is transported Row information acquisition unit 10 is connected with traction machine drive system 6 and elevator traction machine 7 respectively, gather elevator run time voltage, Electric current, speed, positional information, and be connected with main control unit 9, above-mentioned elevator operation information is sent to main control unit 9, master control Traction machine drive system 6 is controlled by two CSTR and PLD FPGA by unit 9 according to above-mentioned information, drags Drawing machine drive system 6 drives elevator traction machine to run;Bank of super capacitors 11 is by DC/DC changer 8 and dc bus 3 phase Even, bank of super capacitors 11 is absorbed by DC/DC changer 8 and stores the Brake Energy produced in elevator traction machine 7 running Amount, and by the energy feedback of storage under elevator traction machine 7 motoring condition;Two-way DC/DC changer 8 and main control unit 9 phase Even, main control unit 9 gathers bank of super capacitors 11 and the operational factor of two-way DC/DC changer 8 according to signal sample circuit Signal, and described signal is stored in system controller 9;System controller 9 is by elevator operation information collecting unit 10 The operation information comprehensive descision of output signal and two-way DC/DC changer 8 controls DC/DC changer 8, thus to super electricity The discharge and recharge of container group 11 is controlled;DC/DC power module 5 obtains DC voltage from dc bus 3, and with main control list Unit 9 is connected, and provides running voltage for it, when external electrical network 1 breaks down power failure, utilizes the energy that super capacitor group 11 stores Amount, maintains main control unit 9 to run, and main control unit 9 sends fault alarm, completes the in-situ FTIR spectroelectrochemitry before power-off, is switched to tight Anxious flat bed duty, traction machine drive system 6 is controlled by the energy utilizing bank of super capacitors 11 to store, it is achieved elevator The steady safe operation of traction machine 7, main control unit 9 connects brake unit 12, will be draged by band-type brake when there is emergency Draw machine locking.
Described main control unit 9, with two CSTR and FPGA as core, gathers elevator and drives subsystem and elevator energy-saving subsystem Information, respectively DC/DC changer 8 and traction machine drive system 6 are controlled by, it is achieved 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, drive circuit, respectively passed elevator operation information collecting unit 10 by signal sample circuit and modulate circuit The signal of sensor output processes, and result exports and processes to DSP and FPGA module, and FPGA realizes the number of two CSTR module According to exchange and SPI communication, fault-signal is processed by FPGA module, obtains according to each sensor signal that trailing cable obtains Relay output control signal, DSP obtains traction according to information such as traction machine speed, position, voltage x current by control algolithm Machine control decision signal, completes the control to traction machine drive system 6.
Described main control unit 9 by sample circuit to the voltage of outside AC network 1 and the voltage of bank of super capacitors 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 power supply effect, sampled signal that main control unit 9 is inputted and to elevator operation information collection by sample circuit The information gathering of unit 10, DSP controls the full controllable devices in DC/DC changer 8 by drive circuit, it is achieved super capacitor group The discharge and recharge of 11.
Described external electrical network 1 breaks down when having a power failure, and system utilizes the energy that super capacitor group 11 stores, passes through DC/DC Power module 5 maintains main control unit 9 to run, and main control unit 9 sends fault alarm, completes the in-situ FTIR spectroelectrochemitry before power-off, cuts Changing to urgent flat bed duty, traction machine drive system 6 is controlled by the energy utilizing bank of super capacitors 11 to store, real The steady safe operation of existing elevator traction machine 7.
A kind of based on the driving control of above-mentioned elevator, the method for energy saving integrated system, comprise the following steps:
Step 1, main control unit (9) detection external electrical network is the most normal, if normal, perform step 2, otherwise performs step Rapid 7;
Main DSP in step 2, main control unit (9) receives the command information of sedan-chair 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, the voltage when DSP module is mainly run according to the collection elevator of elevator operation information collecting unit, electricity The information such as stream, speed, position, and the instruction comprehensive descision of main DSP takes decision-making, it is achieved the speed controlling of traction machine;
Step 4, main control unit gather the voltage x current information of the input/output terminal of two-way DC/DC changer, and decision-making saves The duty of energy system, if elevator operates in on-position, performs step 5, if elevator is operated in motoring condition, performs step 6;
Step 5, combine Fig. 2 bi-directional half bridge formula Buck/Boost converter principle figure, S2Work in PWM state, S1Cut-off, Changer is operated 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 shutoff (toff): switching tube Turning off, diode D forward conduction, inductance releases energy.Shown in its equivalent circuit such as Fig. 3 (c).Exported by oscillogram 3 (d) Voltage UoMeansigma methods be:
U o = 1 T s ∫ 0 T s u o ( t ) d t = 1 T s ( ∫ 0 t o n u o d t + ∫ t o n T s u o d t ) = t o n T s U I = DU I
By the PWM duty cycle regulation output voltage of regulation DSP output, it is achieved bus is the charging of super capacitor group.
Step 6, S1Work in PWM state, S2Turning off, changer is operated 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 ends, and inductance storage energy, power supply stops Only providing energy to load resistance R, energy is provided by electric capacity C.Shown in its equivalent circuit such as Fig. 4 (b).During shutoff (toff): Switching device turns off, diode D forward conduction, and inductance releases energy, and power supply and inductance are load R and provide energy, and to electricity Hold C charging.Shown in its equivalent circuit such as Fig. 4 (c).From oscillogram 4 (d), output voltage U can be obtained by integral equationoFlat Average:
U o = 1 T s ∫ 0 T s u o ( t ) d t = 1 T s ( ∫ 0 t o n u o d t + ∫ t o n T s u o d t ) = t o n + t o f f t o f f U I = U I 1 - D
Offer energy is run for elevator by the PWM duty cycle regulation output voltage of regulation DSP output.
Step 7, external electrical network 1 break down power failure time, the energy utilizing super capacitor group 11 to store, pass through DC/DC Power module 5, powers for main control unit 9, and main control unit 9 sends fault alarm, completes the in-situ FTIR spectroelectrochemitry before power-off, switching To urgent flat bed duty, traction machine drive system 6 is controlled by the energy utilizing bank of super capacitors 11 to store, it is achieved The even running of elevator traction machine 7, safe flat bed.
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Elevator of the present invention drives the main control unit in control, energy saving integrated system to use two CSTR to add FPGA as being The core of system controller, completes decision-making and the control of integral system, according to other subsystem feedacks, it is achieved to elevator The control of the speed of traction machine, position etc., gathers the voltage x current information of the input/output terminal of two-way DC/DC changer simultaneously, The duty of decision-making energy conserving system.
Elevator of the present invention drive control, energy saving integrated system is to power basis at existing elevator device external communication electrical network On, increase bank of super capacitors, two-way DC/DC changer, main control unit.At the braking procedure that elevator subsystem runs In, by two-way DC/DC changer, regenerating braking energy is stored in bank of super capacitors, bank of super capacitors is stored Energy simultaneously can play stand-by power supply in emergency circumstances as elevator accessory power supply under motoring condition, protect Card elevator device runs.
Elevator of the present invention driving controls, the concrete composition of energy saving integrated system is as follows:
In conjunction with Fig. 1, drive control, the design of energy saving integrated system according to the present invention, drive with traditional elevator System is compared, and invention increases super capacitor module energy during storing elevator brake, and increase is two-way simultaneously DC/DC changer is for controlling the discharge and recharge of super capacitor module.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., gathered double simultaneously To the voltage x current information of the input/output terminal of DC/DC changer, the duty of decision-making energy conserving system.
Two-way DC/DC changer 8: combine Fig. 2, two-way DC/DC changer 8 realizes the discharge and recharge to bank of super capacitors, This DC/DC changer 8 uses bi-directional half bridge formula BOOST/BUCK changer, chooses IGBT as switching device.Bi-directional half bridge formula Buck/Boost converter principle figure is as shown in Figure 2.During the work of changer forward, S1Work in PWM state, S2Turn off, circuit etc. Imitate in Boost circuit;During reverse operation, S2Work in PWM state, S1Cut-off, circuit equivalent is in BUCK circuit.
In conjunction with Fig. 3, changer is operated in decompression mode, i.e. during BUCK circuit, shown in equivalent circuit diagram such as Fig. 3 (a).Conducting Period (ton): switching tube turns on, and diode D reversely ends, inductance storage energy.Shown in its equivalent circuit such as Fig. 3 (b).Turn off Period (toff): switching tube turns off, and diode D forward conduction, inductance releases energy.Shown in its equivalent circuit such as Fig. 3 (c).By Oscillogram 3 (d) understands, output voltage UoMeansigma methods can cross integral equation can obtain:
U o = 1 T s ∫ 0 T s u o ( t ) d t = 1 T s ( ∫ 0 t o n u o d t + ∫ t o n T s u o d t ) = t o n T s U I = DU I
In conjunction with Fig. 4, when bi-directional half bridge formula Buck/Boost changer is operated in pressure-increasning state, equivalent circuit diagram such as Fig. 4 Shown in (a).During conducting (ton): switch device conductive, diode D reversely ends, inductance storage energy, and power supply stops to negative Carrying resistance R and provide energy, energy is provided by electric capacity C.Shown in its equivalent circuit such as Fig. 4 (b).During shutoff (toff): derailing switch Part turns off, diode D forward conduction, and inductance releases energy, and power supply and inductance are load R and provide energy, and fill to electric capacity C Electricity.Shown in its equivalent circuit such as Fig. 4 (c).From oscillogram 4 (d), output voltage U can be obtained by integral equationoMeansigma methods:
U o = 1 T s ∫ 0 T s u o ( t ) d t = 1 T s ( ∫ 0 t o n u o d t + ∫ t o n T s u o d t ) = t o n + t o f f t o f f U I = U I 1 - D
In conjunction with Fig. 5, in order to reach to control energy conserving system the accurate control of parameter, the present invention uses cascade PID to realize closing Ring controls.According to the actual working state of energy conserving system, DC-DC module is in Buck pattern or Boost pattern, arranges two groups Different pid parameters, meets the demand for control of both patterns.DC-DC module is working in Buck pattern or Boost pattern Time the charging and discharging currents of super capacitor is controlled in certain scope.Energy conserving system controller uses electric current loop to be internal ring, electricity Pressure ring is outer shroud, and the output of Voltage loop is carried out amplitude control, when energy conserving system initial launch, and the discharge and recharge to super capacitor Electric current limits, and prevents the infringement to super capacitor of the bigger charging and discharging currents.
System controller 9: combine Fig. 6, elevator, with two CSTR and FPGA as core, is driven by the main control unit 9 of system respectively 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, drive circuit.Auxiliary power circuit connects each electricity consumption module and plays power supply Power supply effect.Electricity when the collection elevator of elevator operation information collecting unit is run by signal sample circuit and signal conditioning circuit The information such as pressure, electric current, speed, position, nurse one's health into DSP and FPGA acceptable signal, simultaneously by sample circuit to outside The voltage of AC network and the voltage x current of bank of super capacitors are sampled, and export sampled result to from dsp chip.Main DSP module is mainly used in receiving the command information of sedan-chair top work station, and the elevator control signals of comprehensive trailing cable input, and then Update the speed command from DSP module;When DSP module is mainly run according to the collection elevator of elevator operation information collecting unit Voltage, electric current, speed, the information such as position, and the instruction comprehensive descision of main DSP takes decision-making, realizes according to control algolithm The speed controlling of traction machine, and control the full controllable devices in DC/DC changer, it is achieved the discharge and recharge of super capacitor group; FPGA module mainly according to the elevator control signals of trailing cable input, through logical process, obtains patrolling by force of integral system Collect the SPI communication between output signal, and principal and subordinate DSP.
In conjunction with Fig. 7, when external communication electrical network 1 is powered for elevator subsystem 7, converted by AC/DC changer 2 and DC/AC Alternating current is inputted traction machine drive system 6 and then drives elevator traction machine 7 to operate by device 4.DC/DC power module 5 is from directly simultaneously The stream direct power taking of bus works for main control unit 9.
In conjunction with Fig. 8, will produce braking energy during elevator brake state, passing through and his like bus 3 and DC/DC changer 8 will again Raw feeding braking energy back is stored in bank of super capacitors.When elevator operates in motoring condition or external electrical network power-off, DC/ simultaneously DC power module 5 works for main control unit 9 from the direct power taking of dc bus.
Therefore, bank of super capacitors of the present invention and corresponding pressure-equalizing device advantage mainly have: 1) ultracapacitor The high power capacity of itself, heavy-current discharge characteristic, the energy of its storage be enough to the peak power required for providing into elevator, reduces Class requirement and load to electrical network;2) super capacitor life-span length and discharge and recharge time short advantage are played;3) super electricity Environment will not be caused severe contamination by the use held.
In addition the present invention by display module 10 can intuitively show the real-time voltage of bank of super capacitors, real-time current, The change curve of voltage and current and the real-time charge-discharge energy of bank of super capacitors and feedback braking energy, can more added with The instantaneous working condition of the grasp bank of super capacitors of effect.
From the foregoing, it will be observed that a kind of elevator of the present invention drives control, energy saving integrated system, this system uses based on two CSTR With the main control unit of FPGA, gather the information such as traction machine voltage x current, velocity location, after comprehensive descision, complete elevator traction Machine controls.Use bank of super capacitors to drive as regenerating braking energy memory device and elevator simultaneously and control what subsystem ran Power supply, stores energy in the braking procedure that elevator subsystem runs.Ultracapacitor is straight by two-way DC converter Connecing parallel connection direct bus, main control unit utilizes elevator signal collecting unit to monitor elevator operation in real time, completes super capacitor The transformation of module charge and discharge mode, reaches energy-conservation purpose.The situation that native system cannot be able to be powered in external electrical network catastrophic failure Under, utilize super capacitor as back-up source, it is achieved urgent flat bed after power-off, improve security of system.Native system makes full use of The features such as ultracapacitor discharge current is big, length in service life, discharge and recharge time are short and capacitance density is big, improve elevator and run Energy-saving efficiency and safety, there is the highest Social benefit and economic benefit, meet the idea of environmental protection and sustainable development.
The advantage of bank of super capacitors is greatly played by the present invention by allomeric function design, and system is to bank of super capacitors Carry out charge and discharge control, control its work by system, control circuit and utilize the work of display module display bank of super capacitors State, by system controller control power supply control switching circuit realize external communication electrical network be elevator subsystem run power supply and Bank of super capacitors is to switch over selection between the operation power supply of elevator subsystem.It is super for passing through energy feedback control circuit simultaneously In level Capacitor banks, energy provides another to select: use energy feedback subsystem by outside energy feedback in bank of super capacitors Portion's AC network, it is ensured that energy-conservation maximization.

Claims (5)

1. an elevator drives control, energy saving integrated system, it is characterised in that include AC/DC commutator (2), dc bus (3), DC/AC inverter (4), traction machine drive system (6), elevator traction machine (7), super capacitor group (11), two-way rheology Parallel operation (8), DC/DC power module (5), main control unit (9), elevator operation information collecting unit (10), brake unit (12);
External communication electrical network (1) is connected with dc bus (3) by AC/DC commutator (2), and dc bus (3) is inverse by DC/AC Becoming device (4) to be connected with drive and control of electric machine subsystem (6), drive and control of electric machine subsystem (6) is connected with elevator traction machine (7), Wherein AC/DC changer (2) is connected with external communication electrical network (1), and dc bus connects AC/DC changer (2) and DC/AC inversion Device (4), when elevator traction machine (7) runs, external communication electrical network (1) is given by AC/DC changer (2), DC/AC changer (4) Traction machine drive system (6) provides energy;Elevator operation information collecting unit (10) respectively with traction machine drive system (6) and electricity Ladder traction machine (7) be connected, gather elevator run time voltage, electric current, speed, positional information, and with main control unit (9) phase Even, above-mentioned elevator operation information is sent to main control unit (9), main control unit (9) according to above-mentioned information by two CSTR and can Traction machine drive system (6) is controlled by programmed logic device FPGA, and traction machine drive system (6) drives elevator traction machine fortune OK;Bank of super capacitors (11) is connected with dc bus (3) by DC/DC changer (8), and bank of super capacitors (11) is passed through DC/DC changer (8) absorbs and stores the braking energy produced in elevator traction machine (7) running, and at elevator traction machine (7) by the energy feedback of storage under motoring condition;Two-way DC/DC changer (8) is connected with main control unit (9), main control list Unit (9) gathers bank of super capacitors (11) and the operating parameter signal of two-way DC/DC changer (8) according to signal sample circuit, And described signal is stored in system controller (9);System controller (9) is by elevator operation information collecting unit (10) The operation information comprehensive descision of output signal and two-way DC/DC changer (8) controls DC/DC changer (8), thus to super The discharge and recharge of level Capacitor banks (11) is controlled;DC/DC power module (5) obtains DC voltage from dc bus (3), and It is connected with main control unit (9), provides running voltage for it, when external electrical network (1) breaks down power failure, utilize super capacitor The energy that group (11) stores, maintains main control unit (9) to run, and main control unit (9) sends fault alarm, before completing power-off In-situ FTIR spectroelectrochemitry, is switched to urgent flat bed duty, utilizes the energy that bank of super capacitors (11) stores to traction machine drivetrain System (6) is controlled, it is achieved the steady safe operation of elevator traction machine (7), and main control unit (9) connects brake unit (12), When there is emergency by band-type brake by traction machine locking.
2. drive control, energy saving integrated system according to the elevator described in right 1, it is characterised in that main control unit (9) is with double DSP and FPGA is core, gathers elevator and drives subsystem and the information of elevator energy-saving subsystem, respectively to DC/DC changer (8) It is controlled by with traction machine drive system (6), it is achieved elevator drives and controls;
Main control unit (9) includes main DSP module, from DSP module, FPGA module signal sample circuit, signal conditioning circuit, auxiliary Help power circuit, drive circuit, by signal sample circuit and modulate circuit, elevator operation information collecting unit (10) is respectively passed The signal of sensor output processes, and result exports and processes to DSP and FPGA module, and FPGA realizes the number of two CSTR module According to exchange and SPI communication, fault-signal is processed by FPGA module, obtains according to each sensor signal that trailing cable obtains Relay output control signal, DSP obtains traction according to information such as traction machine speed, position, voltage x current by control algolithm Machine control decision signal, completes the control to traction machine drive system (6).
3. drive control, energy saving integrated system according to the elevator described in right 1, it is characterised in that main control unit (9) passes through The outside voltage of AC network (1) and the voltage x current of bank of super capacitors are sampled by sample circuit, and sampled result is defeated Going out to dsp chip, auxiliary power circuit is connected with sample circuit and dsp chip respectively, plays power supply effect, main control list The sampled signal that unit (9) is inputted by sample circuit and the information gathering to elevator operation information collecting unit (10), DSP leads to Overdrive circuit controls the full controllable devices in DC/DC changer (8), it is achieved the discharge and recharge of super capacitor group (11).
4. drive control, energy saving integrated system according to the elevator described in right 1, it is characterised in that external electrical network (1) occurs event When barrier has a power failure, system utilizes the energy that super capacitor group (11) stores, and maintains main control unit by DC/DC power module (5) (9) running, main control unit (9) sends fault alarm, completes the in-situ FTIR spectroelectrochemitry before power-off, is switched to urgent flat bed work shape State, traction machine drive system (6) is controlled by the energy utilizing bank of super capacitors (11) to store, it is achieved elevator traction machine (7) steady safe operation.
5. one kind drives control, the method for energy saving integrated system based on elevator described in claim 1, it is characterised in that include Following steps:
Step 1, main control unit (9) detection external electrical network is the most normal, if normal, perform step 2, otherwise performs step 7;
The command information of the main DSP reception sedan-chair 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 when step 3, the elevator gathered according to elevator operation information collecting unit from DSP module run, electric current, speed, Positional information, and the instruction of main DSP processes, it is achieved the speed controlling of traction machine;
Step 4, main control unit gather the voltage x current information of the input/output terminal of two-way DC/DC changer, it is judged that energy-conservation system The duty of system, if elevator operates in on-position, performs step 5, if elevator is operated in motoring condition, performs step 6;
Step 5, combine bi-directional half bridge formula Buck/Boost converter principle, S2Work in PWM state, S1Cut-off, changer works At decompression mode, i.e. Buck circuit;During conducting (ton): switching tube turns on, and diode D reversely ends, inductance storage energy; During shutoff (toff): switching tube turns off, and diode D forward conduction, inductance releases energy, output voltage UoMeansigma methods be:
U o = 1 T s ∫ 0 T s u o ( t ) d t = 1 T s ( ∫ 0 t o n u o d t + ∫ t o n T s u o d t ) = t o n T s U I = DU I
By the PWM duty cycle regulation output voltage of regulation DSP output, it is achieved bus is the charging of super capacitor group;
Step 6, S1Work in PWM state, S2Turning off, changer is operated in boost mode, i.e. Boost circuit;During conducting (ton): switch device conductive, diode D reversely ends, inductance storage energy, and power supply stops providing energy to load resistance R, Energy is provided by electric capacity C;During shutoff (toff): switching device turns off, and diode D forward conduction, inductance releases energy, power supply It is load R with inductance and energy is provided, and charge to electric capacity C;Output voltage U can be obtained by integral equationoMeansigma methods:
U o = 1 T s ∫ 0 T s u o ( t ) d t = 1 T s ( ∫ 0 t o n u o d t + ∫ t o n T s u o d t ) = t o n + t o f f t o f f U I = U I 1 - D
Offer energy is run for elevator by the PWM duty cycle regulation output voltage of regulation DSP output;
Step 7, external electrical network (1) break down power failure time, the energy utilizing super capacitor group (11) to store, pass through DC/DC Power module (5), powers for main control unit (9), and main control unit (9) sends fault alarm, completes the scene before power-off extensive Multiple, it is switched to urgent flat bed duty, traction machine drive system (6) is entered by the energy utilizing bank of super capacitors (11) to store Row controls, it is achieved the even running of elevator traction machine (7), safe flat bed.
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CN109516326A (en) * 2017-09-18 2019-03-26 上海三菱电梯有限公司 More elevator control systems
CN110356938A (en) * 2018-03-26 2019-10-22 奥的斯电梯公司 Continual rescue operation
CN108599354A (en) * 2018-05-22 2018-09-28 南京理工大学 Multi-machine system energy saver based on Intelligent PID Control
CN108616158A (en) * 2018-05-22 2018-10-02 南京理工大学 The energy saver of multi-connected machine team control type lift driving and controlling system
CN108599354B (en) * 2018-05-22 2021-09-10 南京理工大学 Multi-motor system energy-saving device based on intelligent PID control
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CN109592521A (en) * 2018-11-23 2019-04-09 张勇 A kind of multiple lift control system with Optimized Operation
CN109626152A (en) * 2018-11-23 2019-04-16 张勇 A kind of elevator device of dragger Energy Saving Control
CN111847158A (en) * 2019-04-29 2020-10-30 合肥天浦硕能电子科技有限公司 Elevator energy feedback device for Internet of things protocol transparent transmission super capacitor energy storage
CN110752639A (en) * 2019-10-30 2020-02-04 田志刚 Low-cost electrotransformation appearance electric capacity charge-discharge circuit, device and cell electrotransformation appearance
WO2022077974A1 (en) * 2020-10-16 2022-04-21 珠海格力电器股份有限公司 Circuit system, control method of circuit system, controller and storage medium
CN113224808A (en) * 2021-04-14 2021-08-06 钟亮 Novel elevator energy-saving device based on super capacitor

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