CN102372198A - Control device for elevator - Google Patents
Control device for elevator Download PDFInfo
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- CN102372198A CN102372198A CN201010251556XA CN201010251556A CN102372198A CN 102372198 A CN102372198 A CN 102372198A CN 201010251556X A CN201010251556X A CN 201010251556XA CN 201010251556 A CN201010251556 A CN 201010251556A CN 102372198 A CN102372198 A CN 102372198A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a control device for an elevator. The device comprises an energy storage device (20), an energy storage device state detector (21), a charge/discharge circuit (19), an energy storage device controller (22), an energy consumption circuit (5) and an energy consumption circuit control device (18), wherein the charge/discharge circuit (19) comprises n parallel branches; and when the regenerated energy of the elevator exceeds the storage capacity of the energy storage device (20) or the regenerated current or regenerated power of the elevator exceeds the acceptable upper limit of the energy storage device (20) or charge/discharge circuit (19), the energy consumption circuit control device (18) controls the energy consumption circuit (5) to completely or partially consume the exceeding part of the regenerated current or power so that the bus voltage is constant or changes according to the predetermined rule and/or the energy storage device is charged in a range avoiding overcharge. According to the invention, the equipment capacity of the elevator power system can be effectively reduced, the electric parameters and power consumption of the power module are effectively reduced, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of elevator control gear, particularly relate to a kind of utilization and contain the charge-discharge circuit of n branch road and the elevator control device that is used for that closed-center system is realized elevator energy-saving, reduction elevator mains connection set electrical capacity.
Background technology
The regenerated energy that produces in the operational process in regeneration for elevator motor; Can utilize closed-center system that it is temporarily stored, and when elevator motor is in electric operation, the regenerated energy that stores is recycled to dc bus and offer elevator motor; Thereby electric energy is provided for the electric operation of elevator motor; So not only can solve the handling problem of regenerated energy, can also significantly reduce elevator energy consumption simultaneously, realize elevator energy-saving.
In having the technology of utilizing closed-center system to handle the regenerated energy that produces in the running process of elevator now; Wherein the charging and discharging circuit as DC bus-bar voltage and closed-center system bridge has adopted by 2 power switch components and 1 two-way Buck-Boost transformer configuration that reactor constituted, as: Chinese invention patent Shen Qing Publication specification sheets CN 101381046A, CN 1845417A and CN 1946625A and Chinese invention patent specification sheets CN 100593504C, CN 100450907C, CN1229275C etc.Utilize two-way Buck-Boost changer to realize the two-way flow of regenerated energy between dc bus and closed-center system, have that circuit structure is simple, few, the easy control of composed component quantity, but exist following not enough:
(1) because the voltage levvl of closed-center system usually can be well below the elevator DC bus-bar voltage; Therefore when elevator motor produces regenerated energy and need be stored to closed-center system with certain power; Tend to produce very big electric current in this charging and discharging circuit closed-center system side; This can increase the load current value of the power switch component of forming charging and discharging circuit greatly, and then causes cost significantly to rise.
(2) the control difficulty of the charging and discharging circuit of this structure is big.To adopt the two closed loops of voltage-to-current that charging and discharging circuit is controlled to be example; Circular current instruction than great fluctuation process in the inevitable subtle change of peripheral voltage ring can cause; This can make the charging and discharging currents of closed-center system at continued jitters in a big way, and this obviously can have a negative impact to the performance of closed-center system, life-span etc.
(3) in the charging and discharging circuit of this structure, no matter energy is to flow to closed-center system or flow to dc bus from closed-center system from dc bus, at any time, energy Flow has only a path.Like this, when the arbitrary composition that constitutes the energy Flow path occurs when unusual, the path of energy Flow all can be had a strong impact on or even interrupted fully, and this must cause flowing of energy to accomplish smoothly, thereby causes system major failure to occur.Therefore, the degree of reliability of the charging and discharging circuit of this structure is very low, is difficult to adapt to the high reliability request of elevator.
In addition, Chinese invention patent specification sheets CN1229275C (Granted publication day: on November 30th, 2005) give chapter and verse to come regeneration resistance is implemented control from the detected value of said charging and discharging state detection means, this control device of make pulse width of controlling the regenerative current control gate according to the dutycycle of setting, with a plurality of different master modes of the electric current that flows into regeneration resistance or power.But dutycycle is to preestablish or realize regenerate with the inflow electric current of resistance or the control of power through increase and decrease one variables D T on existing closing period in this control device, and discontinuous variation, its controller performance has much room for improvement.
Therefore, a kind of effectively depowering on-off element rated current of exploitation, be easy to control and closed-center system that reliability is high and charge-discharge circuit and performance-oriented regenerative circuit control device just become and utilize the energy storage method to handle of elevator regenerated energy problem to be solved is arranged.
Summary of the invention
The technical matters that the present invention will solve provides a kind of elevator control device that is used for; Release energy in the time of not only can be at elevator motor when operation regeneration store regenerated energy, at the elevator motor electric operation; For the elevator motor electric operation provides electric energy and realizes elevator energy-saving by this, and can effectively reduce the apparatus capacity of elevator power supply system.
For solving the problems of the technologies described above, the elevator control device that is used for of the present invention comprises:
One closed-center system, is used to store the regenerated energy that produces when elevator motor regeneration moves, and when the elevator motor electric operation, stored energy is released into dc bus in the dc bus two ends through a charge-discharge circuit cross-over connection;
One closed-center system state detector is used to detect said closed-center system mode of operation;
One closed-center system controller is used to control the energy Flow between dc bus and said closed-center system;
One charge-discharge circuit is arranged between dc bus and the said closed-center system, is used to realize the energy two-way flow between the two;
One energy consumption circuit is arranged at the dc bus two ends, is used for regenerated energy is converted into heat and realizes the consumption of regenerated energy; Wherein, also comprise:
One energy consumption circuit control device is realized the energy consumption of energy consumption circuit is regulated through the control of the on-off element in the energy consumption circuit being opened and turn-offing action;
Said charge-discharge circuit includes the individual parallel branch of n (n >=2);
The storage volume that surpasses said closed-center system when the regenerated energy of elevator regenerated operation generation; Or regenerative current or regenerating power that elevator regenerated operation produces surpass going up in limited time that closed-center system or charge-discharge circuit allowed; Said energy consumption circuit control device is controlled all or part of the consuming that said energy consumption circuit exceeds part with regenerative current or regenerating power, realizes that bus voltage is constant or by predetermined rule variation and/or in the scope of avoiding overcharging, closed-center system is charged.
The useful technique effect that the present invention can reach is:
1) all or part of the consuming of utilizing energy consumption circuit control device control energy consumption circuit down that regenerative current or regenerating power are exceeded part realizes that bus voltage is constant or by predetermined rule variation and in the scope of avoiding overcharging, closed-center system is charged.
2) utilize the closed-center system controller that the closed-center system charge-discharge circuit that contains n branch road is implemented control, realize storage and release, realize elevator energy-saving by this regenerated energy.
3) charge-discharge circuit adopts the structure of n parallel branch, can significantly reduce the electrical capacity (mainly being its rated current) of the power switch component in the said charge-discharge circuit.
4) can the energy in the closed-center system be released into dc bus is that the high-power electric operation of elevator motor provides electric energy, and the power that is provided by mains connection set when effectively subduing the high-power operation of elevator motor can effectively reduce the electrical capacity of elevator mains connection set.
5) can electric current to be passed or power averaging be dispensed in each branch road of said charge-discharge circuit the minimizing and equalization of therefore can realize flowing through each branch current or power.
6) non-fault redundance branch road can be the work branch of et out of order switched to, therefore the fault tolerance of said charge/discharge transformation circuit can be realized based on hardware redundancy.
7) can realize the quantification such as grade of the main supply switch number of times of each branch power on-off element through the mode of the redundant branch road of suitable selection, thereby help the life-span equalization of each branch power on-off element.
8) can be optimized the work branch power consumption, effectively reduce the power consumption of each branch power on-off element, thereby further realize elevator energy-saving.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation:
Fig. 1 is elevator control gear one an embodiment overall structure scheme drawing provided by the invention;
Fig. 2 is charge-discharge circuit one an example structure scheme drawing among Fig. 1;
Fig. 3 is closed-center system controller one an example structure scheme drawing among Fig. 1;
Fig. 4-the 7th, the example structure scheme drawing of allocation units among Fig. 3;
Fig. 8, the 9th, branch road control unit example structure scheme drawing among Fig. 3;
Figure 10 is an example structure scheme drawing of bus voltage error current acquiring unit.
Nomenclature among the figure:
1, external power supply 2, rectifier 3, smooth direct current electric capacity
4, bus voltage detecting device 5, energy consumption circuit 6, dc bus
7, inverter 8, current sensing means 9, elevator motor
10, traction sheave 11, track adjusting wheel 12, counterweight
13, car 14, current controller 15, speed detector
16, speed controller 17, electric life controller 18, energy consumption circuit control device
19, charge-discharge circuit 20, closed-center system 21, closed-center system state detector
22, closed-center system controller 23, elevator control gear
The specific embodiment
Referring to Fig. 1; In the present embodiment; External power supply 1 links to each other with the three-phase alternating current side of rectifier 2,2 phase DC sides of rectifier 2 through dc bus 6 and inverter 72 mutually DC side link to each other, smooth direct current electric capacity 3 and energy consumption circuit 5 respectively cross-over connections in dc bus 6 two ends; Bus voltage detecting device 4 is arranged on the two ends of smooth direct current electric capacity 3; 3 cross streams sides of inverter 7 link to each other with elevator motor 9 through current sensing means 8, and elevator motor 9 links to each other with traction sheave 10 through ad hoc structure, and car 13 passes through the both sides of rope hanging in traction sheave 10 and track adjusting wheel 11 with counterweight 12.Electric life controller 17 generates the speed value of elevator operation according to the instruction or the allotment of group control system order in floor call, the sedan-chair, the current instruction value of the speed value that speed controller 16 is confirmed according to electric life controller 17 and the actual speed generation current controller 14 of speed detector 15 detected elevator motors 9.Current controller 14 generates the control signal to inverter 7 according to the current instruction value of speed controller 16 generations and the current detecting result of current sensing means 8.Electric life controller 17, speed controller 16 and current controller 14 are generically and collectively referred to as elevator control gear 23.Closed-center system 20 through charge-discharge circuit 19 cross-over connections in the two ends of dc bus 6.Closed-center system controller 22 is controlled charge-discharge circuit 19 according to the status information that comes from closed-center system state detector 21 detected closed-center systems 20, bus voltage detecting device 4 detected DC bus-bar voltages with from the elevator information of elevator control gear 23, realizes the transmission of energy 6 of closed-center system 20 and dc buss with this.Energy consumption circuit control device 18 according to bus voltage detecting device 4 detected DC bus-bar voltages, come from the information of closed-center system controller 22 and control is opened and turn-offed to the on-off element of energy consumption circuit 5 from the elevator information of elevator control gear 23, promptly treat that according to energy consumption circuit 5 consumed current or power controls the on-off element in the energy consumption circuit 5.
The control principle of electric life controller 17, speed controller 16 and current controller 14 is identical with conventional elevator speed control principle, is not focus of the present invention, does not give unnecessary details here.Below explanation is focused on the working process of charge-discharge circuit 19, closed-center system 20, closed-center system state detector 21 and closed-center system controller 22.
When elevator motor 9 was in reproduced state, the regenerated energy that is produced was recycled on the dc bus 6, and accumulation on smoothing capacity 3, thereby caused the voltage on the dc bus 6 that rising trend is arranged.Closed-center system state detector 21 detects the status information (as: correlation parameter information such as voltage, electric current, temperature) of closed-center system 20 in real time, and testing result is delivered to closed-center system controller 22.The status information of the status information of the closed-center system 20 that closed-center system controller 22 is sent here according to closed-center system state detector 21, bus voltage detecting device 4 detected DC bus-bar voltages, charge-discharge circuit 19 and and charge-discharge circuit 19 is controlled with the operation relevant information from the elevator device of elevator control gear 23, make that the regenerated energy on the dc bus 6 can be transmitted and be stored in the closed-center system 20 through charge-discharge circuit 19.Simultaneously regenerated energy is delivered to energy consumption circuit control device 18 from dc bus 6 to the transmission information (like power, electric current, gross energy etc.) of closed-center system 20.18 bases of energy consumption circuit control device are transmitted the testing result of information, bus voltage detecting device 4 from the regenerated energy of closed-center system controller 22 and from the elevator device and operation relevant information of elevator control gear 23; Judge whether regenerated energy that elevator regenerated operation produces surpasses the storage volume of closed-center system, or whether the regenerative current that elevator regenerated operation produced or regenerating power surpass the upper limit that closed-center system or charge-discharge circuit allowed; If exceed; Regenerative current or regenerating power that energy consumption circuit control device 18 consumes according to energy consumption circuit 5 needs; Thereby generate the pulse-width signal of on-off element in the energy consumption circuit 5 and deliver to energy consumption circuit 5 it is applied control action, realize the constant of bus voltage by this or change and/or under the situation of avoiding overcharging, realize charging closed-center system 20 by predetermined rule.
When elevator motor 9 was in motoring condition, elevator motor 9 absorbed electric energy through inverter 7 from dc bus 6, thereby caused the voltage at dc bus 6 two ends that downswing is arranged.Closed-center system controller 22 is according to the status information of status information, bus voltage detecting device 4 detected DC bus-bar voltages and the charge-discharge circuit 19 of closed-center system state detector 21 detected closed-center systems 20; Charge-discharge circuit 19 is controlled, made closed-center system 20 discharge stored regenerated energy to dc bus 6 through charge-discharge circuit 19.When the delivered power upper limit or the closed-center system 20 that surpasses closed-center system 20 when the absorbed power of elevator motor 9 can't continue to release energy because of its remaining energy reaches its limits value; The voltage at dc bus 6 two ends will descend; When dropping to a certain degree, external power supply 1 will provide electric energy to dc bus 6 through rectifier 2.
Fig. 2 is the structural representation of charge-discharge circuit 19.Can know by Fig. 2; Include n branch road (n >=2) in the charge-discharge circuit 19; And each branch road is one by 2 on-off elements, 1 two-way Buck-Boost changer that reactor constitutes, and each branch road also includes 1 DC-DC current probe that is used for the detection branch electric current in addition.Promptly form said charge-discharge circuit 19 after n branch road is parallel with one another, and a side links to each other with the two ends of tributary bus 6, another side links to each other with closed-center system 20.
Said closed-center system controller 22 is confirmed and according to certain allocation strategy dc bus 6 and 20 electric currents to be passed of closed-center system or power is carried out appropriate allocation and control between each branch road of said charge-discharge circuit 19.Through the on-off element of 2 * n in the charge-discharge circuit 19 being carried out the suitable control of opening and turn-off, can realize the bi-directional of energy in charge-discharge circuit 19.
Obtaining of said regenerative current can be taked following several kinds of modes:
Mode 1: regenerative current is taken as the load current that elevator regenerated operation produces; And load current can directly obtain through detecting dc bus current; Or by inverter 3 phase side electric currents; Or hand over shaft current or its instruction current, or torque current or its instruction current obtain through calculation, or be aided with elevator relevant information such as elevator device parameter obtains through calculation by the car load situation of elevator speed, acceleration/accel and car load meausring apparatus (or claim " scale ") output.
Mode 2: regenerative current is taken as the bus voltage error current of being confirmed by DC bus-bar voltage and reference value thereof.
Mode 3: regenerative current be taken as behind the load current that the bus voltage error current adds that pass-through mode 1 obtains resulting with.
Mode 4: the regenerating power that regenerative current is taken as elevator divided by bus voltage after resulting merchant.
Mode 5: the merchant that regenerative current is taken as regenerating power and the bus voltage of elevator add behind the bus voltage error current that pass-through mode 2 obtains resulting with.
Obtaining of said regenerating power can be taked following several kinds of modes:
Mode A: regenerating power can be through calculating the moment of elevator motor; Or torque current and cireular frequency long-pending and obtaining; Or through the product of direct-axis current and direct-axis voltage command value on the MAD that calculate to hand over shaft current and quadrature-axis voltage command value resulting and; Or hand on the MAD of shaft current command value and quadrature-axis voltage command value the product of direct-axis current and direct-axis voltage command value resulting and; Or hand on the MAD of shaft current and quadrature-axis voltage command value direct-axis current command value and the product of direct-axis voltage command value resulting with, or the product of direct-axis current command value and direct-axis voltage command value is resulting and obtain on the MAD of friendship shaft current command value and quadrature-axis voltage command value.
Mode B: the real-time moment of at first calculating elevator according to car load situation, elevator operation acceleration/accel and the elevator device parameter of scale output; Combine the running velocity of elevator to calculate the realtime power of elevator then, take all factors into consideration again at last and obtain final elevator operation power demand after factors such as system loss, efficient are suitably adjusted the elevator realtime power that calculates.
Mode C: regenerating power be taken as after the result of calculation that the bus voltage error power of being confirmed by DC bus-bar voltage and reference value thereof adds that pass-through mode A or B obtain resulting with.
Fig. 3 is the structural representation of closed-center system controller 22.Can know that by Fig. 3 closed-center system controller 22 comprises following 2 component units:
Allocation units are confirmed the appropriate allocation strategy, and according to this allocation strategy with dc bus 6 and 20 electric currents to be passed of closed-center system or power division to each branch road, generate each branch current or power command value.
The branch road control unit is controlled charge-discharge circuit 19 each branch road according to each branch current or power command value, realizes the tracking to its command value of branch current or power.
Said dispense unit configurations is as shown in Figure 4; Its working process is: aforementioned gained regenerative current is sent into allocation units as input; Inner at allocation units then; Regenerative current as input further sent into by the branch current that will realize minimize the preset allocation strategy module of confirming in advance with functions such as the life-span equalization of equalization, fault-tolerant, power switch component and power consumption loss minimize, preset allocation strategy module is confirmed each the branch current command value as allocation units output according to regenerative current.The function that preset allocation strategy module will be realized by institute in this structure (being the output signal that desire realizes functional module among Fig. 4) determines; In case the function that will realize is confirmed; Then preset allocation strategy also confirms, in the course of the work allocation strategy with the function that will realize all remain unchanged.Said allocation strategy can carry out integrated planning, make overall plans according to life-span equilibrium and minimise power consumption to fault tolerance, power switch component.
In addition; Said dispense unit configurations also can adopt structure as shown in Figure 5; Its working process is: equally above-mentioned gained regenerative current is sent into allocation units as input; Inner at allocation units then; Regenerative current is sent into desire respectively as input and is realized in functional module and the preset allocation strategy module; Desire realizes that functional module confirms the function that institute will realize and the relative importance and the output of each function according to regenerative current, and next regenerative current and desire realize that the output of functional module is sent to preset allocation strategy module as input together, and preset at last allocation strategy module is according to definite each branch current command value of exporting as allocation units of output of regenerative current and desire realization functional module.In this structure, the function that will realize can be different with the variation of regenerative current, allocation strategy also can with regenerative current with the function that will realize and the relative importance of each function change.
Said allocation units also can adopt structure as shown in Figure 6; Its working process is: aforementioned gained regenerating power is sent into allocation units as input; Inner at allocation units then; Regenerating power as input further sent into by the branch power that will realize minimize the preset allocation strategy module of confirming in advance with functions such as the life-span equalization of equalization, fault-tolerant, power switch component and power consumption loss minimize, preset at last allocation strategy module is confirmed each the branch power command value as allocation units output according to regenerating power.The function that preset allocation strategy will be realized by institute in this structure (being the output that desire realizes functional module among Fig. 6) determines; In case the function that will realize is confirmed; Then preset allocation strategy also confirms, in the course of the work allocation strategy with the function that will realize all remain unchanged.Said allocation strategy can carry out integrated planning, make overall plans according to life-span equilibrium and minimise power consumption to fault tolerance, power switch component.
Said dispense unit configurations also can adopt structure as shown in Figure 7; Its working process is: equally above-mentioned gained regenerating power is sent into allocation units as input; Inner at allocation units then; Regenerating power is sent into desire respectively as input and is realized in functional module and the preset allocation strategy module; Desire realizes that functional module confirms the relative importance of function that institute will realize and each function according to regenerating power and export; Next regenerating power and desire realize that the output of functional module is sent to preset allocation strategy module as input together, and preset at last allocation strategy module realizes definite each branch power command value as allocation units output of output of functional module according to regenerating power and desire.In this structure, the function that will realize can be different with the variation of regenerating power, allocation strategy also can with regenerating power with the function that will realize and the relative importance of each function change.
In one embodiment; The structure of branch road control unit is as shown in Figure 8; Its working process is: the branch current command value i_branch_ref of allocation units output and the testing result i_branch that is used for the DC-DC current probe of detection branch electric current are admitted to a subtracter as input; Subtracter obtains its output behind subtraction---branch current error e _ ibranch; Branch current error e _ ibranch is admitted to the branch current controller as input then; Last branch current controller obtains the control signal of the power switch component of corresponding branch road after control action, through the control action of these control signals to power switch component, can realize the tracking of each branch current to its command value.
In another embodiment, the structure of branch road control unit is as shown in Figure 9, and its working process is: the closed-center system terminal voltage u of testing result i_branch and closed-center system state detector output that is used for the DC-DC current probe of detection branch electric current
_ enenry_storeSent into a multiplier together as input; Multiplier obtains the branch power value after multiplying; The branch power command value P_branch_ref of this branch power value and allocation units output is admitted to a subtracter as input then; Subtracter obtains branch power error e _ Pbranch behind subtraction, branch power error e _ Pbranch is admitted to the branch power controller as input then, and last branch power controller obtains the control signal of the power switch component of corresponding branch road after control action; Through the control action of these control signals, can realize of the tracking of each branch power to its command value to power switch component.
Figure 10 is the acquiring unit structural representation of aforementioned regenerative current obtain manner median generatrix voltage error electric current, and its working process is: the bus voltage actual value V of bus voltage detecting device 4 outputs
DCReference value V with bus voltage
DCrefBe admitted to a subtracter as input together, subtracter obtains the bus voltage error e behind subtraction
Vdc, this error further is admitted to a voltage controller as input, and latter's output obtains the bus voltage error current.
Said closed-center system can be a kind of or some kinds of combinations of storage battery, super capacitor, nanometer electric capacity and other energy storage property device of not addressing, with and with the combination of fuel cell; Said closed-center system state detector is realized the state-detection to said closed-center system through voltage, electric current, temperature and other combination that can react a kind of or some specific characters of said closed-center system mode of operation that detects said closed-center system; Said charge-discharge circuit has adopted by the individual two-way Buck-Boost changer of n (n >=2) as parallel branch, and the employing of this structure can significantly reduce the electrical capacity (mainly being its rated current) of the power switch component in the said charge-discharge circuit.
The implementation of said each branch current or minimum power is: electric current or power averaging are dispensed in each branch road of said charge-discharge circuit the electric current of each branch road or the minimizing and equalization of power of the said charge-discharge circuit of can realizing simultaneously like this flowing through.
The implementation of said fault tolerance is: at first confirm as redundant branch road quantity n-m (m is the natural number less than n); Each branch road of charge-discharge circuit just often then; Only there be m branch road to participate in transfer of energy, when the individual branch road et out of order of the k in the work branch (k is the natural number smaller or equal to n-m), the work branch of et out of order switched to redundant branch road as work branch; Make charge-discharge circuit accomplish its function, thereby realize its fault tolerance based on hardware redundancy.
The implementation of said power switch component life-span equalization is: when realizing said charge-discharge circuit based on the fault tolerance of hardware redundancy; Suitably select as n-m branch road of hardware redundancy or as m branch road of work branch; And the switching target of suitably selecting redundant branch road in working order down; Can realize the quantifications such as main supply switch number of times of each branch power on-off element, thereby the life-span of realizing each branch power on-off element is balanced.
The implementation of said power switch component minimise power consumption is: the power dissipation objectives function of at first setting up power switch component according to the power consumption (comprising switching loss and conducting) and the relation between the electric current of each branch power on-off element; Be that constraint condition is carried out minimization to above-mentioned power dissipation objectives function and found the solution with the branch road number n of the total current instruction of n branch road of said charge-discharge circuit or gross horsepower and said charge-discharge circuit then, instruction distributes between each branch road to total current according to comprehensive again other function that will realize of the branch road quantity that solves at last.
Said closed-center system can be fixedly installed in the building, also can be installed on lift car or the counterweight and motion together thereupon; Said elevator control gear can be connected in parallel in the eleva-tor bank of being made up of the elevator of many common dc buses, and utilizes said closed-center system controller to realize elevator energy-saving, fault tolerance.
Said closed-center system controller; Can be according to the system parameter of elevator load situation and elevator (like the maximum speed of this cycle of run and acceleration/accel, system friction etc.); Thereby the control closed-center system is done the high-power electric operation at elevator motor and the time is released energy to dc bus and for the electric operation of elevator motor electric power is provided, and realizes the reduction of the electrical capacity of elevator mains connection set by this." elevator motor is done the high-power electric operation " here; Mainly be meant elevator quicken up such as heavy duty or underloading quicken descending (especially heavy duty quicken up or before underloading quickens descending accelerator and finishes) wait under the particular case moment or power that the common meeting of the moment of elevator motor output or power is exported under the situation such as elevator travels at the uniform speed.
Although in prior art, had in the disclosed patent and multiplely utilize closed-center system to realize elevator energy-saving, reduce the technical scheme of functions such as elevator power supply system capacity especially at present, the function that these schemes can realize is all single relatively.Elevator control gear provided by the invention has overcome the shortcoming of prior art scheme function singleness, utilizes technical scheme provided by the invention can realize multiple functions such as elevator energy-saving, reduction elevator power supply system capacity simultaneously.Particularly importantly, technical scheme provided by the invention also have following some prior art do not possess but very important outstanding advantage:
A, can significantly reduce electrical capacity as power switch component in the charge-discharge circuit of transfer of energy bridge between dc bus and the closed-center system; And because of therefore the price of high-capacity power on-off element can realize the reduction of cost far above the price of low capacity power switch component usually.
Redistribute work branch when B, et out of order capable of using and realize the fault tolerance of this device, thereby significantly improve the reliability of device based on hardware redundancy.
C, can be optimized, effectively reduce the power consumption of each branch power on-off element, thereby further realize elevator energy-saving the work branch power consumption.
D, can realize that bus voltage is constant or change, and in the scope of avoiding overcharging, closed-center system charged by predetermined rule.
More than through the specific embodiment the present invention has been carried out detailed explanation, but these are not to be construed as limiting the invention.Under the situation that does not break away from the principle of the invention, those skilled in the art also can make many distortion and improvement, and these also should be regarded as protection scope of the present invention.
Claims (19)
1. one kind is used for elevator control device, comprising:
One closed-center system, is used to store the regenerated energy that produces when elevator motor regeneration moves, and when the elevator motor electric operation, stored energy is released into dc bus in the dc bus two ends through a charge-discharge circuit cross-over connection;
One closed-center system state detector is used to detect said closed-center system mode of operation;
One closed-center system controller is used to control the energy Flow between dc bus and said closed-center system;
One charge-discharge circuit is arranged between dc bus and the said closed-center system, is used to realize the energy two-way flow between the two;
One energy consumption circuit is arranged at the dc bus two ends, is used for regenerated energy is converted into heat and realizes the consumption of regenerated energy; It is characterized in that, also comprise:
One energy consumption circuit control device is realized the energy consumption of energy consumption circuit is regulated through the control of the on-off element in the energy consumption circuit being opened and turn-offing action;
Said charge-discharge circuit includes n parallel branch, wherein, and n >=2;
The storage volume that surpasses closed-center system when the regenerated energy of elevator regenerated operation generation; Or regenerative current or regenerating power that elevator regenerated operation produces surpass going up in limited time that closed-center system or charge-discharge circuit allowed; Said energy consumption circuit control device is controlled all or part of the consuming that said energy consumption circuit exceeds part with regenerative current or regenerating power, realizes that bus voltage is constant or by predetermined rule variation and/or in the scope of avoiding overcharging, closed-center system is charged.
2. control setup according to claim 1; It is characterized in that: the load current that said regenerative current produces when being elevator regenerated the operation; This load current can directly obtain through detecting dc bus current; Or by inverter 3 phase side electric currents; Or hand over shaft current or hand over the shaft current command value, or torque current or torque current command value obtain through calculation, or being aided with the elevator device parameter by the car load situation of elevator speed, acceleration/accel and the output of car load meausring apparatus obtains through calculation.
3. control setup according to claim 1 is characterized in that: the bus voltage error current of said regenerative current for being confirmed by DC bus-bar voltage and reference value thereof.
4. control setup according to claim 1; It is characterized in that: the bus voltage error current of said regenerative current for confirming by DC bus-bar voltage and reference value thereof; Add the load current that obtains by through the detection dc bus current; Or add by inverter 3 phase side electric currents or the load current handing over shaft current or hand over shaft current command value or torque current or its torque current command value to obtain through calculation, or the car load situation by elevator speed, acceleration/accel and the output of car load meausring apparatus of adding be aided with behind the load current that the elevator device parameter obtains after calculating resulting and.
5. control setup according to claim 1; It is characterized in that: said regenerative current be the regenerating power of elevator divided by the resulting merchant of DC bus-bar voltage, or the regenerating power of elevator add divided by the resulting merchant of DC bus-bar voltage behind the bus voltage error current of confirming by DC bus-bar voltage and reference value thereof resulting with.
6. control setup according to claim 1; It is characterized in that: said regenerating power can be through calculating the moment of elevator motor; Or torque current and cireular frequency are long-pending; Or hand on the MAD of shaft current and quadrature-axis voltage command value the product of direct-axis current and direct-axis voltage command value resulting and; Or hand on the MAD of shaft current command value and quadrature-axis voltage command value the product of direct-axis current and direct-axis voltage command value resulting and; Or hand on the MAD of shaft current and quadrature-axis voltage command value direct-axis current command value and the product of direct-axis voltage command value resulting with, or on the MAD of friendship shaft current command value and quadrature-axis voltage command value the product of direct-axis current command value and direct-axis voltage command value resulting and; The elevator realtime power that perhaps goes out according to car load situation, elevator speed, acceleration/accel and the elevator device calculation of parameter of car load meausring apparatus output is taken all factors into consideration and is obtained after system loss, efficiency factor are suitably adjusted the elevator realtime power that calculates.
7. control setup according to claim 1; It is characterized in that: said regenerating power; It can be the bus voltage error power of confirming by DC bus-bar voltage and reference value thereof; Add through calculating the moment of elevator motor; Or torque current and cireular frequency are long-pending, or hand on the MAD of shaft current and quadrature-axis voltage command value direct-axis current and the product of direct-axis voltage command value resulting with, or on the MAD of friendship shaft current command value and quadrature-axis voltage command value the product of direct-axis current and direct-axis voltage command value resulting and; Or hand on the MAD of shaft current and quadrature-axis voltage command value direct-axis current command value and the product of direct-axis voltage command value resulting with, or on the MAD of friendship shaft current command value and quadrature-axis voltage command value the product of direct-axis current command value and direct-axis voltage command value resulting and;
Perhaps; By DC bus-bar voltage and the definite bus voltage error power of reference value thereof; Add the elevator realtime power that car load situation, elevator speed, acceleration/accel and elevator device calculation of parameter according to car load meausring apparatus output go out, take all factors into consideration the result of calculation sum that obtains after system loss, efficient are suitably adjusted the elevator realtime power that calculates again.
8. control setup according to claim 1; It is characterized in that: said closed-center system controller, confirm also electric current to be passed or power between dc bus and closed-center system to be carried out appropriate allocation and control between each branch road of said charge-discharge circuit according to certain allocation strategy.
9. control setup according to claim 1 is characterized in that: said closed-center system controller comprises,
Allocation units are confirmed the appropriate allocation strategy, and according to this allocation strategy with electric current to be passed or power division between dc bus and closed-center system to each branch road, generate each branch current or power command value;
The branch road control unit is controlled each branch road of charge-discharge circuit according to each branch current or power command value, realizes the tracking to its command value of branch current or power.
10. according to Claim 8 or 9 described control setups; It is characterized in that: said allocation strategy is; In electric current or power division to m branch road of said charge-discharge circuit; When k branch road et out of order in m the branch road, k branch road of et out of order switched to n-m remaining branch road, realize the fault tolerance of said charge-discharge circuit based on hardware redundancy; Wherein, m is the natural number less than n, and k is the natural number that is less than or equal to n-m.
11. control setup according to claim 10; It is characterized in that: said allocation strategy is; When realizing said charge-discharge circuit based on the fault tolerance of hardware redundancy, through suitable selection as n-m branch road of hardware redundancy or as m branch road of work branch, and the switching target of the redundant branch road of suitable down selection in working order; Realize the quantifications such as main supply switch number of times of each branch power on-off element, thereby the life-span that helps each branch power on-off element is balanced.
12. according to Claim 8 or 9 described control setups; It is characterized in that: said allocation strategy is; The power dissipation objectives function of at first setting up power switch component according to the power consumption and the relation between the electric current of each branch power on-off element; Be constraint condition with the total current command value of n branch road of said charge-discharge circuit or the branch road number n of gross horsepower command value and said charge-discharge circuit then; Above-mentioned power dissipation objectives function is carried out minimization find the solution, according to comprehensive again other function that will realize of the branch road quantity that solves total current command value or gross horsepower are distributed between each branch road at last.
13. according to Claim 8 or 9 described control setups; It is characterized in that: said allocation strategy is; Electric current or power averaging are dispensed in each branch road of said charge-discharge circuit the electric current of each branch road or the minimizing and equalization of power of the said charge-discharge circuit of realizing flowing through.
14. control setup according to claim 1 is characterized in that: said energy consumption circuit control device, treat that according to the energy consumption circuit consumed current or power controls the on-off element in the energy consumption circuit.
15. control setup according to claim 1; It is characterized in that: said closed-center system can be one or more combinations of storage battery, super capacitor or nanometer electric capacity, or one or more combinations of storage battery, super capacitor or nanometer electric capacity and the combination of fuel cell.
16. control setup according to claim 1 is characterized in that: the combination of one or more characteristics of voltage, electric current or the temperature of said closed-center system state detector through detecting said closed-center system realizes the state-detection to said closed-center system.
17. control setup according to claim 1 is characterized in that: said charge-discharge circuit adopts two-way Buck-Boost changer as parallel branch.
18. control setup according to claim 1; It is characterized in that: said closed-center system controller is according to the system parameter of elevator load situation and elevator; Make closed-center system do the high-power electric operation and the time release energy, thereby electric power is provided for the electric operation of elevator motor to dc bus at elevator motor.
19. control setup according to claim 1; It is characterized in that: the said elevator control device that is used for is connected in parallel in the eleva-tor bank of being made up of the elevator of many common dc buses, and utilizes said closed-center system controller to realize elevator energy-saving, fault tolerance.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117510A (en) * | 2017-04-14 | 2017-09-01 | 特斯联（北京）科技有限公司 | A kind of intelligent elevator remote monitoring system |
| CN110048445A (en) * | 2018-01-17 | 2019-07-23 | 上海三菱电梯有限公司 | Energy-saving device of elevator |
| CN110040587A (en) * | 2018-01-17 | 2019-07-23 | 上海三菱电梯有限公司 | Elevator energy-saving deployment device |
| CN111099483A (en) * | 2018-10-25 | 2020-05-05 | 中车株洲电力机车研究所有限公司 | Elevator, electric energy storage and release controller and electric energy storage and release method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311151A (en) * | 2000-02-28 | 2001-09-05 | 三菱电机株式会社 | Elevator control device |
| CN1930071A (en) * | 2004-03-18 | 2007-03-14 | 东芝电梯株式会社 | Elevator control device |
| WO2007145628A1 (en) * | 2006-06-15 | 2007-12-21 | Otis Elevator Company | Electrical energy storage system for driving a load |
| CN101282898A (en) * | 2005-10-07 | 2008-10-08 | 奥蒂斯电梯公司 | Power supply system of lifter |
| CN101409526A (en) * | 2007-10-10 | 2009-04-15 | 株式会社日立制作所 | Elevator system and accumulator unit |
-
2010
- 2010-08-12 CN CN201010251556XA patent/CN102372198B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311151A (en) * | 2000-02-28 | 2001-09-05 | 三菱电机株式会社 | Elevator control device |
| CN1930071A (en) * | 2004-03-18 | 2007-03-14 | 东芝电梯株式会社 | Elevator control device |
| CN101282898A (en) * | 2005-10-07 | 2008-10-08 | 奥蒂斯电梯公司 | Power supply system of lifter |
| WO2007145628A1 (en) * | 2006-06-15 | 2007-12-21 | Otis Elevator Company | Electrical energy storage system for driving a load |
| CN101409526A (en) * | 2007-10-10 | 2009-04-15 | 株式会社日立制作所 | Elevator system and accumulator unit |
Non-Patent Citations (2)
| Title |
|---|
| 王善磊 等: "一种多重工作方式的双向DC/DC变换器", 《机电工程》 * |
| 陈明 等: "多重化双向DC-DC变换器复合校正双闭环控制策略研究", 《电力自动化设备》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117510A (en) * | 2017-04-14 | 2017-09-01 | 特斯联（北京）科技有限公司 | A kind of intelligent elevator remote monitoring system |
| CN110048445A (en) * | 2018-01-17 | 2019-07-23 | 上海三菱电梯有限公司 | Energy-saving device of elevator |
| CN110040587A (en) * | 2018-01-17 | 2019-07-23 | 上海三菱电梯有限公司 | Elevator energy-saving deployment device |
| CN110048445B (en) * | 2018-01-17 | 2021-05-25 | 上海三菱电梯有限公司 | Elevator energy-saving device |
| CN111099483A (en) * | 2018-10-25 | 2020-05-05 | 中车株洲电力机车研究所有限公司 | Elevator, electric energy storage and release controller and electric energy storage and release method |
| CN111099483B (en) * | 2018-10-25 | 2021-10-08 | 中车株洲电力机车研究所有限公司 | Elevator, electric energy storage and release controller and electric energy storage and release method |
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|---|---|
| CN102372198B (en) | 2013-10-23 |
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