The elevator integrated controller
Technical field
The utility model relates to the elevator control technology field, relates in particular to a kind of integrated controller that passes through the elevator of permasyn morot or Asynchronous Motor Driving operation.
Background technology
Elevator is the vertical transportation instrument that operates in the elevator hoistways, in operational process up and down reciprocatingly, finishes the transportation of personnel or goods.In existing elevator, generally come balance elevator load (being people or the goods in the car), thereby make the electric system of elevator more reasonable by elevator counterweight.When placing about 45% load carrying ability in the car usually, elevator is in the counterweight balance state.
Along with the difference of load carrying ability, the difference of service direction, the operation of elevator can be divided into two kinds of electric operation and runnings under braking.Wherein electric operation be meant lift car load-carrying greater than elevator counterweight, the controlling and driving electrical motor is finished the operation of elevator thereby system need absorb energy from electrical network; Running under braking is meant the load-carrying of lift car less than elevator counterweight, thus the potential energy energy back that produces in system, and the energy of this feedback can use the resistance braking of braking resistor or the energy feeding braking of feedback unit.In the operational process of elevator, electric operation is identical with the probability that running under braking occurs, and therefore the potential energy energy that produces is more considerable.Usually use the mode of feedback unit, can be more energy-conservation more than 20% than traditional elevator.
Fig. 1 is the elevator controlling structure scheme drawing of using always, and it is made up of 4 parts: electric life controller 13, frequency converter 12, feedback unit 11, elevator drive electrical motor 14.Wherein electric life controller 13 collection and treatment elevator hall external signals, lift car signal, elevator hoistways signal, finish elevator logic control (for example inspection travel, driver operation, fire-fighting operation control etc.), elevator instruction scheduling (arrange elevator in numerous outer-office callings, car, call in selection, determine the operation purpose of elevator) etc., and be connected with frequency converter by interface circuit, finish the simple data exchange, realize control frequency converter.
Frequency converter 12 is divided into frequency converter mechanical arm, Frequency Converter Control plate, drives three the part compositions in loop.The mechanical arm of frequency converter is connected with the Frequency Converter Control plate, finishes converter parameter setting and debug function; The control desk of frequency converter has interface circuit, and is connected between the electric life controller, receives the instruction of electric life controller; Drive the loop and be divided into several links such as rectification, inversion, electric capacity, its rectifying part is transformed into DC bus-bar voltage by the RST source of AC (for example AC 380) of electrical network, and electric capacity is to this vdc voltage stabilizing.Frequency converter adopts vector control algorithm according to control command, adjusts the work combination of inverse switch pipe and finishes DC bus-bar voltage to the control of elevator drive with electrical motor.
Elevator drive is propulsions source of elevator with electrical motor 14, finishes the lift car traction is driven.
Feedback unit 11 comprises 3 parts such as inversion module, feedback unit control desk, feedback unit mechanical arm, and wherein the feedback unit mechanical arm is connected with the feedback unit control desk, finishes its parameter and is provided with and debugging; Inversion module is connected with the DC bus-bar voltage of frequency converter, energy can be fed back on the RST of electrical network after voltage raises; The feedback unit control desk detects DC bus-bar voltage, need to judge whether the energy feedback, controls inversion module then and finishes feedback function.
In the elevator brake running state, the potential energy energy drives elevator drive that elevator counterweight produces is rotated with electrical motor, consequent electric energy feeds back to the electric capacity of frequency converter by the diode of the inversion module of frequency converter, thereby the voltage of electric capacity raises, and surpassing the DC bus-bar voltage that the electrical network rectification is changed, the rectifying part of frequency converter is no longer worked.Feedback unit detects DC bus-bar voltage and raises, and controls its inversion module energy back is arrived electrical network, finishes lift energy feedback.
In said structure, energy feedback unit is independent integral body, only is operated in the energy regeneration processes.And when the elevator electric operation, energy feedback unit is not worked.And the rectifying part of frequency converter is on the contrary, and energy quits work during the elevator brake operation by this rectifying part input during the elevator electric operation.Therefore the device service efficiency of this scheme is low.In addition, in the above-mentioned apparatus for controlling elevator, particularly feedback unit, frequency converter, 3 parts of electric life controller are independently whole separately, each other for cooperating, need to connect the line of forceful electric power or light current, wrong line or miss all cisco unity malfunctions of line, but also may damage equipment.
In addition, feedback unit in the above-mentioned apparatus for controlling elevator, frequency converter, 3 parts of electric life controller are independently whole separately, and debugger is all arranged separately, carry 3 kinds of debuggers in order to finish the debugging need of work, be familiar with 3 products, increased debugging difficulty and work capacity.The commissioning staff is required height.
And, between the various piece in the such scheme information exchange simple, can not satisfy the requirement of safe handling.For example, if the heating of feedback unit module is serious during the energy feedback, elevator device but can't be understood this information, continues running under braking and may cause feedback unit to damage, and then damage frequency converter.Owing to adopt a plurality of modules, in order to be artistically decorated, reach requirements such as heat radiation, make the control housing space big, make troubles to use scenes such as no machine rooms.
The utility model content
The technical problems to be solved in the utility model is that the deficiency at above-mentioned apparatus for controlling elevator exists proposes a kind of new elevator integrated controller.
The technical scheme that the utility model solves the problems of the technologies described above is, construct a kind of elevator integrated controller, form by driving loop and integrated control desk, described driving loop comprises dc bus, reservoir capacitance, inverter circuit and rectifier circuit for reversible drives, wherein said rectifier circuit for reversible drives is connected across between electrical network and the dc bus, inverter circuit is connected across between dc bus and the electrical motor, reservoir capacitance is connected across between the dc bus, is integrated with the control reversible rectification module that switches between rectification and regenerating condition of described rectifier circuit for reversible drives and the motor control module that is used to control described inverter circuit on the described integrated control desk.
At elevator described in the utility model with in the integrated controller, described reversible rectification module when DC bus-bar voltage is lower than the electrical network changing voltage to described rectifier circuit for reversible drives output the power network current rectification is outputed to the control signal of dc bus and when DC bus-bar voltage is higher than the electrical network changing voltage to the control signal of rectifier circuit for reversible drives output with dc bus electric energy feedback grid.
Use in the integrated controller at elevator described in the utility model, described rectifier circuit for reversible drives comprises six diode and six switching valves that are connected across described six diode two ends respectively of being connected across respectively between electrical network interface and the dc bus, wherein the positive pole of three diodes is connected one of electrical network triple line, negative pole is connected on the positive bus-bar of dc bus, and the negative pole of other three diodes is connected one of electrical network triple line, positive pole is connected on the negative busbar of dc bus, and the gate pole of each described switching valve is connected to the control signal output ends of reversible rectification module.
With in the integrated controller, described diode is connected to one of triple line of electrical network by an inductance at elevator described in the utility model.
, be integrated with a mechanical arm connecting interface on the described integrated control desk and be used to receive and handle the mechanical arm processing module that mechanical arm instructs with in the integrated controller at elevator described in the utility model.
At elevator described in the utility model with in the integrated controller, be integrated with on the described integrated control desk control that the calculating that is used for the elevator run curve and curve produce the curve module, be used for according to the elevator instruction scheduler module of the operation purpose floor of the definite elevator of calling and the elevator Logic control module that is used for special logic control of elevator and elevator safety Signal Processing in outer-office calling and the car.
With in the integrated controller, rectifier circuit for reversible drives and inverter circuit are installed to same thermal component in the described driving loop at elevator described in the utility model.
Elevator integrated controller of the present utility model, makes system save the energy feedback unit part of original scheme, thereby reduces the cost of lift energy feedback greatly energy feedback and the shared circuit of rectification by rectifier circuit for reversible drives.In addition, the utility model organically combines functions such as energy feedback, elevator logic control, elevator instruction scheduling, electric machine control and is one, and all state parameters can be shared, and make the reliability of control higher.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of existing apparatus for controlling elevator;
Fig. 2 is the structural representation of the utility model elevator with integrated controller embodiment;
Fig. 3 is the functional block diagram of integrated control desk among Fig. 2;
Fig. 4 is the scheme drawing of the utility model elevator with integrated controller second embodiment;
Fig. 5 is the functional block diagram of first control desk among Fig. 4;
Fig. 6 is the functional block diagram of second control desk among Fig. 4;
Fig. 7 is the mode chart of three-phase input voltage.
The specific embodiment
As shown in Figure 2, be the structural representation of the utility model elevator with integrated controller embodiment.This system forms with integrated control desk 22 two parts by driving loop 21.The two ends that wherein drive loop 21 are connected respectively to electrical network and elevator driving motor 27, and its electric energy with electrical network rotates with electrical motor 27 through overcommutation and inversion rear drive elevator drive, thereby drives the car upstream or downstream.Integrated control desk 22 is used for according to elevator hall's external signal, lift car signal and the elevator hoistways signal etc. that obtain the rectification and the inversion process that drive loop 21 being controlled.
Driving loop 21 comprises dc bus 26, is connected across rectifier circuit for reversible drives 23 between dc bus 26 and the electrical network, is connected across the inverter circuit 24 between dc bus 26 and the elevator drive electrical motor and is connected across reservoir capacitance 25 on two lines of dc bus 26.
In the present embodiment, rectifier circuit for reversible drives 23 has the bidirectional energy transmission capacity: during the electric operation of elevator, rectifier circuit for reversible drives 23 is to be delivered to dc bus 26 behind the direct current (DC) with the AC rectification of electrical network; During running under braking, rectifier circuit for reversible drives 23 is to be delivered on the electrical network behind the alternating current with the direct current (DC) rectification on the dc bus 26.Rectifier circuit for reversible drives comprise six be connected across respectively diode between electrical network interface and the dc bus and six respectively collector and emitter be connected across the switching valve at described six diode two ends.Above-mentioned switching valve and diode be connected across first and third, five switching valve groups 1,3,5 between electrical network and the dc bus electrode line and be connected across electrical network and the dc bus negative line between the 4th, six, two switching valve groups 4,6,2.
For filtering in regeneration processes, also can between switching valve and electrical network, connect inductance, promptly first and third, five switching valve groups 1,3,5 are connected to one of triple line of electrical network with the 4th, six, two switching valve groups 4,6,2 connections by an inductance respectively.
Inverter circuit 24 is connected with dc bus 26, elevator drive electrical motor, and it by the different conducting states of adjusting switch pipe, finishes the control of elevator drive electrical motor according to the control command of integrated control desk 22.
Be connected across two reservoir capacitances 25 on the dc bus 26 and be used for when elevator store electrical energy during, and keep dc voltage stability in running under braking.When elevator brake, potential energy drives the rotation of elevator drive electrical motor, and consequent electric energy feeds back to dc bus and is stored on the reservoir capacitance 25 through inverter circuit, and then by rectifier circuit for reversible drives 23 feedback grids.
As shown in Figure 3, be the structural representation of integrated control desk 22 among Fig. 2.This integrated control desk 22 comprises reversible rectification module 31 and motor control module 34.Wherein reversible rectification module 31 is used for to rectifier circuit for reversible drives 23 output control signals, so that rectifier circuit for reversible drives 23 carries out the conversion of AC and DC.Motor control module 34 is to inverter circuit 24 output control signals, so that the running of its control motor-driven electrical motor.
In the present embodiment, reversible rectification module 31 adopts the working group of vector control method adjusting switch pipe and finishes rectification and regeneration processes.Particularly, reversible rectification module 31 (is promptly exported high level and is made the switching valve conducting to the work of the gate pole output control signal control rectifier circuit for reversible drives 23 of switching valve, output low level is ended switching valve), thus rectifier circuit for reversible drives 23 is switched between rectification and regenerating condition.This reversible rectification module 31 is (or difference is greater than a threshold value) when the voltage of dc bus 26 is lower than the electrical network changing voltage, makes rectifier circuit for reversible drives 23 be in rectification state; (or difference is greater than a threshold value) makes rectifier circuit for reversible drives 23 be in regenerating condition when the voltage of dc bus 26 is higher than the electrical network changing voltage.At normal rectification state, all switching valves end, and realize rectification by six diodes; At regenerating condition, this reversible rectification module 31 judges according to the waveform of line voltage which stage this moment R, S, T triple line are in, and selectively control makes periodically conducting or end of switching valve to six switching valves output control signals then.For example when being in the 1st stage of Fig. 7, reversible rectification module 31 is to switching valve 1, switching valve 6 output high level, to other switching valve output low level; When being in for the 2nd stage, to switching valve 1,2 output high level, to other switching valve output low level; When being in for the 3rd stage, to switching valve 3,2 output high level, to other switching valve output low level; When being in for the 4th stage, to switching valve 3,4 output high level, to other switching valve output low level; When being in for the 5th stage, to switching valve 5,4 output high level, to other switching valve output low level; When being in for the 6th stage, to switching valve 5,6 output high level, to other switching valve output low level.
Integrated control desk 22 is being realized electric operation and is being driven in the process of operation, also from driving loop 21 collect status information, collect simultaneously and the Room external signal of handling elevator, lift car signal, elevator hoistways signal etc., thereby direct motor drive and energy regeneration processes are finished in the controlling and driving loop.Above-mentioned signal collection and control can be passed through curve module 35, elevator instruction scheduler module 33 and elevator Logic control module 36 etc. and partly realize.Wherein, curve module 35 is used for the calculating of elevator run curve and the control that curve produces; Elevator instruction scheduler module 33 is used for arranging elevator to call selection in numerous outer-office callings, car, determines the operation purpose floor of elevator; Elevator Logic control module 36 is used for such as special logic control and elevator safety Signal Processing of elevator such as inspection travel, driver's operation, fire-fighting operation controls.For example, elevator Logic control module 36 can obtain the temperature that drives loop 21, can give priority in arranging for elevator electric operation or a period of time out of service the damage of avoiding running under braking to cause when its temperature rises to certain threshold value.
In addition, integrated control desk 22 also can comprise a mechanical arm processing module 32, thereby realizes parameter setting and the debugging of mechanical arm to apparatus for controlling elevator of the present utility model.By this mechanical arm processing module 32, make this system only just can finish the parameter setting and the debugging of functions such as elevator logic control, elevator instruction scheduling, electric machine control, energy feedback by a debugger interface.The aforesaid operations device can be the accessory of this system, both can combine with system, and also can independently be a part.
The thermal component of the thermal component of rectifier circuit for reversible drives 23 and inverter circuit 24 is as a whole in the said driving circuit 21, and promptly reversible rectifying circuit 23 is installed to same thermal component with inverter circuit 24.
Above-mentioned rectifier circuit for reversible drives 23 makes energy feedback and the shared circuit of frequency converter rectification system saved the energy feedback unit part of original scheme, thereby reduces the cost of lift energy feedback greatly, and lift energy feedback is extensively promoted becomes possibility.
In addition, above-mentioned integrated control desk 22 is only finished the parameter setting and the debugging of apparatus for controlling elevator by a debugger interface, shortens burn in period, reduces the technical ability requirement to the commissioning staff.And said system organically combines functions such as energy feedback, elevator logic control, elevator instruction scheduling, electric machine control and is one, can construct compact apparatus for controlling elevator, dwindled the size of elevator control cabinet, the application scenarios high such as convenient no machine room to space requirement.
As Fig. 4, Fig. 5, shown in Figure 6, be the structural representation of the utility model elevator with another embodiment of integrated controller.In the present embodiment, system is made up of control desk group 42, driving loop 41,43 3 parts of mechanical arm.Identical with last embodiment, drive the loop and comprise rectifier circuit for reversible drives, inverter circuit, dc bus and reservoir capacitance composition.
Control desk group 42 is made up of first control desk 44 and second control desk 45.Carry out data exchange by the mode of serial communication between this first control desk 44 and 45 two parts of second control desk.
The functional block diagram of first control desk 44 comprises reversible rectification module 51, motor control module 54, elevator motor parameter identification module 52, curve module 55, target velocity computing module 53 and vector control module 56 as shown in Figure 5.Wherein, reversible rectification module 51 is according to the control needs, controls reversible finishing circuit and finishes energy feedback or rectification function; Motor control module 54 is used for finishing by inverter circuit the vector controlled of elevator drive electrical motor, drives the operation of elevator drive electrical motor, realizes the function that elevator moves up and down; Parameter of electric machine identification module is used to calculate, discern the characteristic parameter of elevator drive electrical motor, for example, parameters such as the stator resistance of electrical motor, inductance, thus the control of elevator drive electrical motor finished; Curve module 55 is used to realize the calculating of elevator run curve and the generation of curve; Target velocity computing module 53 is used for the operating needs according to elevator, calculates rational elevator operational objective speed; Vector control module 56 is used for the calculating of vector control algorithm.
The functional block diagram of second control desk 45 comprises operation control module 61, elevator Logic control module 67, instruction scheduling module 64, team control module 68, mechanical arm interface module 63, clock module 62, communication module 66 and parameter memory module 65 as shown in Figure 6.Wherein instruction scheduling module 64 is used for arranging elevator to call selection in numerous outer-office callings, car, determines the operation purpose floor of elevator, is the indispensable module of the normal operation of elevator; Elevator Logic control module 67 is used for such as for example distinctive logic control of elevator and elevator safety Signal Processing such as inspection travel, driver's operation, fire-fighting operation control; Operation control module is used for controlling according to the operation of different operating modes at operational process the function management of output contactless switch, band-type brake contactless switch etc.; Team control module 68 is used for group's dispatcher's control of a plurality of elevators in building; Mechanical arm interface module 63 is used to finish the data exchange with mechanical arm 43; Clock module 62 is Gregorian calendar clocks of system, is used for record trouble information, realizes the elevator control of different time sections; Communication module 66 is communication set of system, is used to finish the output of elevator calling signal collection and shows signal; Parameter memory module 65 is administration modules of system parameter setting, the parameter storage when also comprising simultaneously system's input supply disconnecton.