CN101119026A - High-power electric energy-saving device and control method for elevator - Google Patents
High-power electric energy-saving device and control method for elevator Download PDFInfo
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- CN101119026A CN101119026A CNA2007100459686A CN200710045968A CN101119026A CN 101119026 A CN101119026 A CN 101119026A CN A2007100459686 A CNA2007100459686 A CN A2007100459686A CN 200710045968 A CN200710045968 A CN 200710045968A CN 101119026 A CN101119026 A CN 101119026A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention relates to the technical field of electron, information and energy, in particular to a high tech large scale power electronic energy saving device and the device control method adopting modern scientific and technical means for an elevator. The device comprises at least: a logic protection module, a singlechip controller, an elevator reproduction DC power source, an insolated gate BJT IGBT inverting bridge, an AC electric network, and a synchronous detecting module, all together are combined into an inverting synchronous circuit electronic energy saving device. The method realizes system control through interrupting the principal service program and secondary service program, and is mainly aimed to solve the technical problem on how to recycle the output energy of the electric motor back to the electric network while the motor is in a power generating state during the course of the frequency conversion and speed governable elevator running. The beneficial effect regarding the present invention comes in that: utilizing modern electric and electronic technology, control technology, computer technology to realize the recycling of the reproduced energy of an elevator system back to an AC electric network, at the same time providing safety protection on overpressure, overflow and overheat of the system, facilitating advantages of swift concise efficient control etc.
Description
Technical field
The present invention relates to a kind of electronics, information, the multi-disciplinary technical field of the energy, refer to a kind of modern means of science and technology of utilizing especially, be mainly used in the elevator high-power electric energy-saving device and the control method thereof of the high-tech technical products of realizing elevator energy-saving.
Background technology
At present, in the elevator operation control system, nearly all at the speed-regulating tool that uses the ac-dc-ac inverter device as drive motors.This class transducer power factor height, efficient height, precision height, speed-regulating range width are so obtain extensive use.Variable-frequency control technique relates to a plurality of ambits such as electronics, electrician, information and control.Adopting variable-frequency control technique is the important channel of saving energy and reduce the cost, improving control performance, improving the quality of products, and has obtained good effect and remarkable economic efficiency in application.But, aspect the operation and control of elevator, the problem that also exists further excavation frequency conversion speed-adjusting system energy-saving potential and raise the efficiency.Two important channels have been addressed this problem.The one, take a kind of control strategy to make the loss of variable frequency drive motors minimum and most effective; The 2nd, utilize a kind of technological means to make the manufacturing machine energy stored in time feed back to electrical network efficiently.First problem can realize " energy-on-demand " by variable-frequency control technique and optimal control technology thereof, promptly under the prerequisite that satisfies manufacturing machine speed, torque and dynamic response requirement, reduces the intake of converter plant as far as possible; Second problem can will be stored in the Way of Regenerating Energy Feedback of frequency converter DC side to AC network by the active inversion device.What this patent related to is second problem--the ac-dc-ac frequency control lift energy feedback control technology of frequency control elevator energy-saving control.
The problem that frequency-changing elevator exists in application is:
Universal frequency converter mostly is the voltage-type ac-dc-ac frequency converter.The principle of this class frequency converter is, three-phase alternating current is not at first controlled rectifier bridge through diode and obtained Rectified alternating current, again through the electrochemical capacitor filtering voltage regulation, after the alternating current of active inversion output voltage, frequency adjustable power to motor.But universal frequency converter can not be directly used in and need rise fast, brake and the governing system of frequent forward and backward, again can not be with the electric energy feedback grid of electric power generation state generation.Because this system requirements motor four quadrant running, when deceleration of elevator, braking and ascending for elevator, motor is in regenerative power generation state.Because the control rectifier power transfer is not irreversible for the diode of frequency converter, the regenerative electric energy of generation is transferred on the DC side filter capacitor, produces the pump up voltage.Too high pump up voltage might damage switching device, electrochemical capacitor, even can destroy the insulation of motor, thereby threaten system safety work, can only consume the form of this part energy by energy consumption resistance at present with heat energy, because resistance heating is serious, and the functional reliability of system, stability are adversely affected.
Domestic and international lift energy feedback technical research present situation:
Be in the regenerated energy that regenerative power generation state produces in order to solve elevator, Siemens has been released the voltage-type ac-dc-ac frequency converter of motor four quadrant running, and states such as Japan, Canada have also successfully developed the power supply regenerative device.Simultaneously, seen the development report that four-quadrant voltage-type ac-dc-ac frequency converter and grid side pulse rectifier etc. are arranged abroad.Ubiquitous problem is that these devices cost an arm and a leg, and it is very high to the requirement of electrical network to add some products, is not suitable for the national conditions of China.The domestic dynamic braking mode that mostly adopts in medium and small capacity system, promptly realize the four quadrant running of motor though this method is simple, following critical defect being arranged by the built-in or method that adds brake resistance with power consumption in Power Resistor:
(1) the waste energy reduces system effectiveness.(2) resistance heating is serious, influences other part operate as normal of system.(3) simple dynamic braking can not in time suppress the pump up voltage that fast braking produces sometimes, has limited the raising of braking ability.
The report of domestic existing hydraulic elevator energy conserving system, and utilize energy feedback control technology to realize that the research of elevator energy-saving is fewer.Do not see the report of invention product as yet about the research of lift energy feedback electric energy-saving aspect.
Summary of the invention
In order to overcome above-mentioned weak point, it is that object is directly controlled with grid line voltage that main purpose of the present invention aims to provide a kind of, the frequency converter dc voltage is through changing as the control circuit power supply, the power inverting controller that adopts has six IGBT of three brachium pontis (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) form, and the device that adopts a slice 89C52 single-chip microcomputer to produce inverter control signal and carry out system's overvoltage, overcurrent, overheated safeguard protection; And, elevator regenerated electric energy feedback AC network can will can be controlled simple and direct effective elevator high-power electric energy-saving device and control method thereof again by the method for break in service main program and interrupt service subroutine control system.
The technical problem to be solved in the present invention is: how mainly to solve the technical problem of motor output energy feedback grid under the frequency control elevator electric power generation state in service, how to utilize modern power electronics technology, control technology, computer technology to realize the relevant technologies problems such as feedback of elevator device regenerated energy to AC network.
The technical solution adopted for the present invention to solve the technical problems is: this device is made up of parts such as filter, rectifier, frequency converter, motor, power supply, logical circuit and single-chip microcomputers, and this device comprises at least:
Logic protection module, singlechip controller, elevator regenerated DC power supply, insulated gate bipolar transistor IGBT inverter bridge, AC network and synchronous detection module are combined as the electric energy-saving device of an inversion synchronous circuit;
The output of one logic protection module is connected with the input of singlechip controller module, the output of singlechip controller module is connected with the input of insulated gate bipolar transistor IGBT inverter bridge module, one output of insulated gate bipolar transistor IGBT inverter bridge module is connected with the input of logic protection module, and another output is connected with the input of AC network module;
The output of one elevator regenerated DC power supplier is connected with the input of insulated gate bipolar transistor IGBT inverter bridge module;
The output of one AC network module is connected with the input of singlechip controller module after via synchronous detection module.
The input signal of the computer control of the singlechip controller of described elevator high-power electric energy-saving device and virtual protection circuit has three-phase synchronous signal and over-current over-voltage protection signal; output signal is the control signal of turn-on and turn-off of six IGBT of inverter controller, wherein:
Second pin of the road AND A of the pin P1.0 of singlechip controller is connected, and a road the 3rd pin through inverter AND A of the pin P1.1 of singlechip controller is connected, and first pin of NOR gate A is connected with the overcurrent protection end;
Second pin of another road AND B of the pin P1.1 of singlechip controller is connected, and another road of the pin P1.0 of singlechip controller is connected through the 3rd pin of inverter AND B, and first pin of NOR gate B is connected with the overcurrent protection end;
Second pin of the road AND C of the pin P1.2 of singlechip controller is connected, another road is connected through the 3rd pin of inverter AND D, a road the 3rd pin through inverter AND C of the pin P1.3 of singlechip controller is connected, and first pin of NOR gate C is connected with the overcurrent protection end;
Second pin of another road AND D of the pin P1.3 of singlechip controller is connected, and another road of the pin P1.2 of singlechip controller is connected through the 3rd pin of inverter AND D, and first pin of NOR gate D is connected with the overcurrent protection end;
Second pin of the road AND E of the pin P1.4 of singlechip controller is connected, another road is connected through the 3rd pin of inverter AND F, a road the 3rd pin through inverter AND E of the pin P1.5 of singlechip controller is connected, and first pin of NOR gate E is connected with the overcurrent protection end;
Second pin of the road AND F of the pin P1.5 of singlechip controller is connected, another road is connected through the 3rd pin of inverter AND E, another road of the pin P1.4 of singlechip controller is connected through the 3rd pin of inverter AND F, and first pin of NOR gate F is connected with the overcurrent protection end;
The output of NOR gate A, NOR gate B, NOR gate C, not gate D, NOR gate E and NOR gate F all is connected with the base stage of each insulated gate bipolar transistor respectively through inverter, is the control signal of computer output.
The AB phase line voltage of the insulated gate bipolar transistor IGBT inverter bridge of described elevator high-power electric energy-saving device is connected with IGBT insulated gate bipolar transistor T1, T2, T3, T4 respectively; Begin to make T1, T4 conducting constantly in AB phase line voltage 60 degree phase places, AB phase line voltage 120 degree phase places make T1, T4 end constantly; AB phase line voltage 240 degree phase places make T2, T3 conducting constantly, and AB phase line voltage 300 degree phase places make T2, T3 end constantly;
The BC phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge is connected with IGBT insulated gate bipolar transistor T3, T4, T5, T6 respectively; Begin to make T3, T6 conducting constantly in BC phase line voltage 60 degree phase places, BC phase line voltage 120 degree phase places make T3, T6 end constantly; BC phase line voltage 240 degree phase places make T4, T5 conducting constantly, and BC phase line voltage 300 degree phase places make T4, T5 end constantly;
The CA phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge is connected with IGBT insulated gate bipolar transistor T5, T6, T1, T2 respectively; Begin to make T5, T2 conducting constantly in CA phase line voltage 60 degree phase places, CA phase line voltage 120 degree phase places make T5, T2 end constantly; CA phase line voltage 240 degree phase places make T6, T1 conducting constantly, and CA phase line voltage 300 degree phase places make T6, T1 end constantly.
The singlechip controller of described elevator high-power electric energy-saving device is a slice 51 serial chip microprocessor 89C52.
A kind of elevator high-power electric energy-saving control method, this method are the inputs that is sent to the exterior interrupt of singlechip controller by the output pulse signal of ac line voltage 60 degree phase locking circuit modules; Utilize the synchronizing signal of 60 degree phase time points of ac line voltage as inverter voltage output, spend the lock in time of the moment with 60 of grid line voltage, and produce synchronous circuits by ac line voltage 60 degree Phase synchronization signals as six insulated gate bipolar transistor IGBT conductings of inverter bridge; Add the control system that logical circuit is formed by singlechip controller, the insulated gate bipolar transistor IGBT inverter bridge is controlled, and requiring conducting and close according to the rules, the inversion of direct voltage finished to three-phase alternating voltage; The input signal of singlechip controller has three-phase synchronous signal and over-current over-voltage protection signal, and output signal is the control signal of turn-on and turn-off of six IGBT of inverter controller; Produce three-phase alternating voltage control signal sequence by singlechip controller, and produce the system protection signal; The method of this control system comprises: break in service main program and interrupt service subroutine, wherein:
The concrete job step of this break in service main program is:
Single-chip microcomputer electrification reset program brings into operation;
The zero clearing of step 2. internal storage location
After executing the beginning module, then enter the internal storage location dump block, to the internal storage location zero clearing that needs in the program operation process to use;
After executing the internal storage location dump block, then enter timer 60 degree time blocks, the single-chip microcomputer timer internal is carried out timer 60 degree timing parameters settings, comprise the setting of timer working method, initial value;
The outer interruption of step 4. allows
After executing timer 60 degree time blocks, then enter outer the interruption and allow module, the permission external interrupt is set, comprise external interrupt 0 and external interrupt 1, one of them interrupts for line voltage 60 degree phase places detect constantly, and another interrupts being the error protection input;
After executing outer interruption permission module, then enter the wait interrupt module, this wait interrupts comprising the interruption of waiting-line voltage 60 degree phase signals and the interruption of external fault signal;
The concrete job step of the break in service 1 of interrupt service subroutine is:
When single-chip microcomputer respective synchronization signal interruption, break in service 1 begins to carry out;
The be conducted control signals of 60 degree of step 2. output AB
After executing break in service 1 module, then enter the be conducted control signal modules of 60 degree of output AB, when output AB phase time, the T1 of insulated gate bipolar transistor IGBT, T4 conducting are the control signals of 60 degree;
The be conducted control signals of 60 degree of step 3. output AC
Execute output AB and be conducted after the control signal modules of 60 degree, then enter the be conducted control signal modules of 60 degree of output AC, when output AC phase time, the T1 of insulated gate bipolar transistor IGBT, T6 conducting are the control signals of 60 degree;
The be conducted control signals of 60 degree of step 4. output BC
Execute output AC and be conducted after the control signal modules of 60 degree, then enter the be conducted control signal modules of 60 degree of output BC, when output BC phase time, the T3 of insulated gate bipolar transistor IGBT, T6 conducting are the control signals of 60 degree;
The be conducted control signals of 60 degree of step 5. output BA
Execute output BC and be conducted after the control signal modules of 60 degree, then enter the be conducted control signal modules of 60 degree of output BA, when output BA phase time, the T3 of insulated gate bipolar transistor IGBT, T2 conducting are the control signals of 60 degree;
The be conducted control signals of 60 degree of step 6. output CA
Execute output BA and be conducted after the control signal modules of 60 degree, then enter the be conducted control signal modules of 60 degree of output CA, when output CA phase time, the T5 of insulated gate bipolar transistor IGBT, T2 conducting are the control signals of 60 degree;
The be conducted control signals of 60 degree of step 7. output CB
Execute output CA and be conducted after the control signal modules of 60 degree, then enter the be conducted control signal modules of 60 degree of output CB, when output CB phase time, the T5 of insulated gate bipolar transistor IGBT, T4 conducting are the control signals of 60 degree;
Step 8. interrupts returning A
Execute output CB and be conducted after the control signal modules of 60 degree, then enter and interrupt returning module, interrupt service routine is finished and turns back to position before this interrupt service routine is carried out;
The concrete job step of the break in service 2 of interrupt service subroutine is:
When single-chip microcomputer respective external fault-signal interrupts,, break in service 2 begins to carry out;
After executing break in service 2 modules, then enter output logic locking signal module, single-chip microcomputer output logic locking signal is closed six IGBT insulated gate bipolar transistors of drive axle;
After executing output logic locking signal module, then enter and interrupt returning module, interrupt service routine is finished and turns back to this preceding position of interrupt service routine execution.
The invention has the beneficial effects as follows: this device solves the technical problem of motor output energy feedback grid under the frequency control elevator electric power generation state in service, this method is a control system by break in service main program and interrupt service subroutine, can be with elevator regenerated electric energy feedback AC network, again can control is simple and direct effectively; The present invention has utilized modern power electronics technology, control technology, computer technology; realize of the feedback of elevator device regenerated energy to AC network; and carry out system's overvoltage, overcurrent, overheated safe protection, have advantages such as control system easy to use, that raise the efficiency.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing 1 is the integrally-built circuit block diagram of the present invention;
Accompanying drawing 2 is computer control of the present invention and virtual protection circuit theory diagrams;
Accompanying drawing 3 is inverter bridge circuit theory diagrams of the present invention;
Accompanying drawing 4 is inverter bridge circuit theory diagrams of the present invention;
Accompanying drawing 5 is inverter bridge circuit theory diagrams of the present invention;
Accompanying drawing 6 is inverter bridge circuit theory diagrams of the present invention;
Label declaration in the accompanying drawing:
The 1-virtual protection;
The 2-singlechip controller;
The elevator regenerated DC power supply of 3-;
4-insulated gate bipolar transistor IGBT inverter bridge;
The 5-AC network;
The 6-synchronous detecting;
The 10-overcurrent protection; 50-break in service 1;
20-NOR gate A; The be conducted control signals of 60 degree of 51-output AB;
21-NOR gate B; The be conducted control signals of 60 degree of 52-output AC;
The be conducted control signals of 60 degree of 22-NOR gate C 53-output BC;
23-NOR gate D; The be conducted control signals of 60 degree of 54-output BA;
24-NOR gate E; The be conducted control signals of 60 degree of 55-output CA;
The be conducted control signals of 60 degree of 25-NOR gate F 56-output CB;
40-begins 57-and interrupts returning A;
41-internal storage location zero clearing 60-break in service 2;
42-timer 60 degree regularly; 61-output logic locking signal;
43-interrupts allowing 62-to interrupt returning B outward;
44-waits for interruption;
Embodiment
See also shown in the accompanying drawing 1,2,3, the present invention is made up of parts such as filter, rectifier, frequency converter, motor, power supply, logical circuit and single-chip microcomputers, and this device comprises at least:
The output of one virtual protection, 1 module is connected with the input of singlechip controller 2 modules, the output of singlechip controller 2 modules is connected with the input of insulated gate bipolar transistor IGBT inverter bridge 4 modules, one output of insulated gate bipolar transistor IGBT inverter bridge 4 modules is connected with the input of virtual protection 1 module, and another output is connected with the input of AC network 5 modules;
The output of one elevator regenerated DC power supply 3 modules is connected with the input of insulated gate bipolar transistor IGBT inverter bridge 4 modules;
The output of one AC network, 5 modules is connected with the input of singlechip controller 2 modules after via synchronous detecting 6 modules.
The computer control of the singlechip controller 2 of described elevator high-power electric energy-saving device and the input signal of virtual protection circuit have three-phase synchronous signal and over-current over-voltage protection signal; output signal is the control signal of turn-on and turn-off of six IGBT of inverter controller, wherein:
Second pin of the road AND A20 of the pin P1.0 of singlechip controller 2 is connected, a road the 3rd pin through inverter AND A20 of the pin P1.1 of singlechip controller 2 is connected, and first pin of NOR gate A20 is connected with overcurrent protection 10 ends;
Second pin of another road AND B21 of the pin P1.1 of singlechip controller 2 is connected, another road of the pin P1.0 of singlechip controller 2 is connected through the 3rd pin of inverter AND B21, and first pin of NOR gate B21 is connected with overcurrent protection 10 ends;
Second pin of the road AND C22 of the pin P1.2 of singlechip controller 2 is connected, another road is connected through the 3rd pin of inverter AND D23, a road the 3rd pin through inverter AND C22 of the pin P1.3 of singlechip controller 2 is connected, and first pin of NOR gate C22 is connected with overcurrent protection 10 ends;
Second pin of another road AND D23 of the pin P1.3 of singlechip controller 2 is connected, another road of the pin P1.2 of singlechip controller 2 is connected through the 3rd pin of inverter AND D23, and first pin of NOR gate D23 is connected with overcurrent protection 10 ends;
Second pin of the road AND E24 of the pin P1.4 of singlechip controller 2 is connected, another road is connected through the 3rd pin of inverter AND F25, a road the 3rd pin through inverter AND E24 of the pin P1.5 of singlechip controller 2 is connected, and first pin of NOR gate E24 is connected with overcurrent protection 10 ends;
Second pin of the road AND F25 of the pin P1.5 of singlechip controller 2 is connected, another road is connected through the 3rd pin of inverter AND E24, another road of the pin P1.4 of singlechip controller 2 is connected through the 3rd pin of inverter AND F25, and first pin of NOR gate F25 is connected with overcurrent protection 10 ends;
The output of NOR gate A20, NOR gate B21, NOR gate C22, not gate D23, NOR gate E24 and NOR gate F25 all is connected with the base stage of each insulated gate bipolar transistor respectively through inverter, is the control signal of computer output.
The AB phase line voltage of the insulated gate bipolar transistor IGBT inverter bridge 4 of described elevator high-power electric energy-saving device is connected with IGBT insulated gate bipolar transistor T1, T2, T3, T4 respectively; Begin to make T1, T4 conducting constantly in AB phase line voltage 60 degree phase places, AB phase line voltage 120 degree phase places make T1, T4 end constantly; AB phase line voltage 240 degree phase places make T2, T3 conducting constantly, and AB phase line voltage 300 degree phase places make T2, T3 end constantly;
The BC phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge 4 is connected with IGBT insulated gate bipolar transistor T3, T4, T5, T6 respectively; Begin to make T3, T6 conducting constantly in BC phase line voltage 60 degree phase places, BC phase line voltage 120 degree phase places make T3, T6 end constantly; BC phase line voltage 240 degree phase places make T4, T5 conducting constantly, and BC phase line voltage 300 degree phase places make T4, T5 end constantly;
The CA phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge 4 is connected with IGBT insulated gate bipolar transistor T5, T6, T1, T2 respectively; Begin to make T5, T2 conducting constantly in CA phase line voltage 60 degree phase places, CA phase line voltage 120 degree phase places make T5, T2 end constantly; CA phase line voltage 240 degree phase places make T6, T1 conducting constantly, and CA phase line voltage 300 degree phase places make T6, T1 end constantly.
The singlechip controller 2 of described elevator high-power electric energy-saving device is a slice 51 serial chip microprocessor 89C52.
See also shown in the accompanying drawing 4,5,6, a kind of elevator high-power electric energy-saving control method, this method are the inputs that is sent to the exterior interrupt of singlechip controller 2 by the output pulse signal of ac line voltage 60 degree phase locking circuit modules; Utilize the synchronizing signal of 60 degree phase time points of ac line voltage as inverter voltage output, spend the lock in time of the moment with 60 of grid line voltage, and produce synchronous circuits by ac line voltage 60 degree Phase synchronization signals as six insulated gate bipolar transistor IGBT conductings of inverter bridge; Add the control system that logical circuit is formed by singlechip controller 2, insulated gate bipolar transistor IGBT inverter bridge 4 is controlled, and requiring conducting and close according to the rules, the inversion of direct voltage finished to three-phase alternating voltage; The input signal of singlechip controller 2 has three-phase synchronous signal and over-current over-voltage protection signal, and output signal is the control signal of turn-on and turn-off of six IGBT of inverter controller; Produce three-phase alternating voltage control signal sequence by singlechip controller 2, and produce the system protection signal; The method of this control system comprises: break in service main program and interrupt service subroutine, wherein:
The concrete job step of this break in service main program is:
Single-chip microcomputer electrification reset program begins 40 operations;
After executing beginning 40 modules, then enter internal storage location zero clearing 41 modules, to the internal storage location zero clearing 41 that needs in the program operation process to use;
The 60 degree timings 42 of step 3. timer
After executing internal storage location zero clearing 41 modules, then enter regularly 42 modules of timer 60 degree, the single-chip microcomputer timer internal is carried out timer 60 regularly 42 parameter settings of degree, comprise the setting of timer working method, initial value;
The outer interruption of step 4. allows 43
After executing timer 60 degree timings 42 modules, then enter outer the interruption and allow 43 modules, the permission external interrupt is set, comprise external interrupt 0 and external interrupt 1, one of them interrupts for line voltage 60 degree phase places detect constantly, and another interrupts being the error protection input;
After interrupting outside executing allowing 43 modules, then enter and wait for interruption 44 modules, this wait interruption comprises the interruption of waiting-line voltage 60 degree phase signals and the interruption of external fault signal;
The concrete job step of the break in service 1 of interrupt service subroutine is:
When single-chip microcomputer respective synchronization signal interruption, break in service 150 begins to carry out;
The be conducted control signals 51 of 60 degree of step 2. output AB
After executing break in service 150 modules, then enter be conducted control signal 51 modules of 60 degree of output AB, when output AB phase time, the T1 of insulated gate bipolar transistor IGBT, T4 conducting are the control signals of 60 degree;
The be conducted control signals 52 of 60 degree of step 3. output AC
Execute output AB and be conducted after control signal 51 modules of 60 degree, then enter be conducted control signal 52 modules of 60 degree of output AC, when output AC phase time, the T1 of insulated gate bipolar transistor IGBT, T6 conducting are the control signals of 60 degree;
The be conducted control signals 53 of 60 degree of step 4. output BC
Execute output AC and be conducted after control signal 52 modules of 60 degree, then enter be conducted control signal 53 modules of 60 degree of output BC, when output BC phase time, the T3 of insulated gate bipolar transistor IGBT, T6 conducting are the control signals of 60 degree;
The be conducted control signals 54 of 60 degree of step 5. output BA
Execute output BC and be conducted after control signal 53 modules of 60 degree, then enter be conducted control signal 54 modules of 60 degree of output BA, when output BA phase time, the T3 of insulated gate bipolar transistor IGBT, T2 conducting are the control signals of 60 degree;
The be conducted control signals 55 of 60 degree of step 6. output CA
Execute output BA and be conducted after control signal 54 modules of 60 degree, then enter be conducted control signal 55 modules of 60 degree of output CA, when output CA phase time, the T5 of insulated gate bipolar transistor IGBT, T2 conducting are the control signals of 60 degree;
The be conducted control signals 56 of 60 degree of step 7. output CB
Execute output CA and be conducted after control signal 55 modules of 60 degree, then enter be conducted control signal 56 modules of 60 degree of output CB, when output CB phase time, the T5 of insulated gate bipolar transistor IGBT, T4 conducting are the control signals of 60 degree;
Step 8. interrupts returning A57
Execute output CB and be conducted after control signal 56 modules of 60 degree, then enter and interrupt returning 57 modules, interrupt service routine is finished and turns back to position before this interrupt service routine is carried out;
The concrete job step of the break in service 2 of interrupt service subroutine is:
When single-chip microcomputer respective external fault-signal interrupts,, break in service 260 begins to carry out;
After executing break in service 260 modules, then enter output logic locking signal 61 modules, single-chip microcomputer output logic locking signal is closed six IGBT insulated gate bipolar transistors of drive axle;
After executing output logic locking signal 61 modules, then enter and interrupt returning 62 modules, interrupt service routine is finished and turns back to this preceding position of interrupt service routine execution.
Operation principle of the present invention is:
Elevator is in running, because of the elevator device counterweight, deceleration during operation, braking, it is consumed power not that half the time is arranged approximately, the kinetic energy of elevator, potential energy are converted to power storage in the dc bus capacitor of frequency converter by motor, and this part energy normally is converted into thermal waste by energy consumption resistance and falls; The present invention successfully utilizes this part energy from newly sending electrical network back to again.
The power inverting controller that the present invention adopts has six IGBT of three brachium pontis (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) and forms.Input signal is the control signal from singlechip controller, and its output links to each other with the three-phase ac power cord of AC network respectively.Be A, B, the C three-phase of three-phase alternating current electrical network, whenever link to each other with an IGBT brachium pontis respectively mutually.Six IGBT take turns conducting every certain angle, convert direct current to the per second alternating current in 50 weeks, send electrical network then back to.
The input signal of synchronous circuit is the line voltage of three phase network, converts pulse signal to through detecting translation circuit, gives singlechip controller with this pulse signal then, realizes that the inversion three-phase alternating voltage is identical with the phase place of electrical network three-phase alternating voltage.
Singlechip controller of the present invention adopts a slice 51 serial chip microprocessor 89C52, add the logical circuit forming control system, to inverter bridge IGBT (Insulated GateBipolar Transistor, insulated gate bipolar transistor) controls, make its requiring conducting and close according to the rules, finish the inversion of direct voltage to three-phase alternating voltage.The input signal of singlechip controller 2 has three-phase synchronous signal and over-current over-voltage protection signal, and output signal is the control signal of turn-on and turn-off of six IGBT of inverter controller.Produce three-phase alternating voltage control signal sequence by singlechip controller, and produce the system protection signal.
The input signal of virtual protection circuit is IGBT (Insulated Gate BipolarTransistor; insulated gate bipolar transistor) overcurrent, overvoltage and heat alarm; these signals are sent to singlechip controller through after the protective circuit, and single-chip microcomputer output protection control signal is blocked the conducting of inverter controller.
See also shown in the accompanying drawing 2,3, illustrate:
1). among Fig. 2,1., 2., 3., 4., 5., the control signal of 6. exporting for computer, deliver to respectively among Fig. 3 1., 2., 3., 4., 5., 6. number IGBT (InsulatedGate Bipolar Transistor, insulated gate bipolar transistor) high power transistor.
2). Ud is frequency converter DC side regeneration direct voltage among Fig. 3.
3). A, B, C connect AC network A phase, B phase, C phase three-phase voltage respectively among Fig. 3.
Program flow diagram supplementary notes of the present invention:
See also shown in the accompanying drawing 2,3,4,5,6,
Block one: as shown in Figure 4,
The first step: single-chip microcomputer electrification reset program brings into operation;
Second step: to the internal storage location zero clearing that needs in the program operation process to use;
The 3rd step: the single-chip microcomputer timer internal is carried out timer 60 degree timing parameters settings, comprise the setting of timer working method, initial value;
The 4th step: the permission external interrupt is set, comprises external interrupt 0 and external interrupt 1.Wherein
An interruption detects constantly as line voltage 60 degree phase places, and another interrupts as the error protection input;
The 5th step: wait for and interrupting, comprise the interruption of waiting-line voltage 60 degree phase signals and the interruption of external fault signal;
Block two: as shown in Figure 5,
The first step: when single-chip microcomputer respective synchronization signal interruption, interrupt service routine 1 begins to carry out;
Second step: output AB phase IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) 1., the 4. control signal of conducting 60 degree;
The 3rd step: output AC phase IGBT 1., the 6. control signal of conducting 60 degree;
The 4th step: output BC phase IGBT 3., the 6. control signal of conducting 60 degree;
The 5th step: output BA phase IGBT 3., the 2. control signal of conducting 60 degree;
The 6th step: output CA phase IGBT 5., the 2. control signal of conducting 60 degree;
The 7th step: output CB phase IGBT 5., the 4. control signal of conducting 60 degree;
The 8th step: interrupt service routine is finished and turns back to this preceding position of interrupt service routine execution;
Block three: as shown in Figure 6,
The first step: when single-chip microcomputer respective external fault-signal interrupted, interrupt service routine 2 began to carry out;
Second step: single-chip microcomputer output logic locking signal, close 6 IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) of drive axle;
The 3rd step: interrupt service routine is finished and turns back to this preceding position of interrupt service routine execution.
System of the present invention characteristics:
1). this utility model can be with elevator regenerated electric energy feedback AC network;
2). adopt a slice 89C52 single-chip microcomputer generation inverter control signal and carry out the guarantor of system Protect;
3). directly control take grid line voltage as object;
4). the frequency converter dc voltage is through changing as the control circuit power supply;
5). have overvoltage, overcurrent, overheated safeguard protection.
Claims (5)
1. elevator high-power electric energy-saving device, this device has filter, rectifier, frequency converter, motor, power supply, logical circuit and single-chip microcomputer, it is characterized in that: this device comprises at least:
Virtual protection (1) module, singlechip controller (2), elevator regenerated DC power supply (3), insulated gate bipolar transistor IGBT inverter bridge (4), AC network (5) and synchronous detecting (6) module combinations are the electric energy-saving device of an inversion synchronous circuit;
The output of one virtual protection (1) module is connected with the input of singlechip controller (2) module, the output of singlechip controller (2) module is connected with the input of insulated gate bipolar transistor IGBT inverter bridge (4) module, one output of insulated gate bipolar transistor IGBT inverter bridge (4) module is connected with the input of virtual protection (1) module, and another output is connected with the input of AC network (5) module;
The output of one elevator regenerated DC power supply (3) module is connected with the input of insulated gate bipolar transistor IGBT inverter bridge (4) module;
The output of one AC network (5) module is connected with the input of singlechip controller (2) module after via synchronous detecting (6) module.
2. elevator high-power electric energy-saving device according to claim 1; it is characterized in that: the computer control of described singlechip controller (2) and the input signal of virtual protection circuit have three-phase synchronous signal and over-current over-voltage protection signal; output signal is the control signal of turn-on and turn-off of six insulated gate bipolar transistor IGBTs of inverter controller, wherein:
Second pin of the road AND A (20) of the pin P1.0 of singlechip controller (2) is connected, a road the 3rd pin through inverter AND A (20) of the pin P1.1 of singlechip controller (2) is connected, and first pin of NOR gate A (20) is connected with overcurrent protection (10) end;
Second pin of another road AND B (21) of the pin P1.1 of singlechip controller (2) is connected, another road of the pin P1.0 of singlechip controller (2) is connected through the 3rd pin of inverter AND B (21), and first pin of NOR gate B (21) is connected with overcurrent protection (10) end;
Second pin of the road AND C (22) of the pin P1.2 of singlechip controller (2) is connected, another road is connected through the 3rd pin of inverter AND D (23), a road the 3rd pin through inverter AND C (22) of the pin P1.3 of singlechip controller (2) is connected, and first pin of NOR gate C (22) is connected with overcurrent protection (10) end;
Second pin of another road AND D (23) of the pin P1.3 of singlechip controller (2) is connected, another road of the pin P1.2 of singlechip controller (2) is connected through the 3rd pin of inverter AND D (23), and first pin of NOR gate D (23) is connected with overcurrent protection (10) end;
Second pin of the road AND E (24) of the pin P1.4 of singlechip controller (2) is connected, another road is connected through the 3rd pin of inverter AND F (25), a road the 3rd pin through inverter AND E (24) of the pin P1.5 of singlechip controller (2) is connected, and first pin of NOR gate E (24) is connected with overcurrent protection (10) end;
Second pin of the road AND F (25) of the pin P1.5 of singlechip controller (2) is connected, another road is connected through the 3rd pin of inverter AND E (24), another road of the pin P1.4 of singlechip controller (2) is connected through the 3rd pin of inverter AND F (25), and first pin of NOR gate F (25) is connected with overcurrent protection (10) end;
The output of NOR gate A (20), NOR gate B (21), NOR gate C (22), not gate D (23), NOR gate E (24) and NOR gate F (25) all is connected with the base stage of each insulated gate bipolar transistor IGBT respectively through inverter, is the control signal of computer output.
3. elevator high-power electric energy-saving device according to claim 1 is characterized in that: the AB phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge (4) is connected with IGBT insulated gate bipolar transistor T1, T2, T3, T4 respectively; Begin to make T1, T4 conducting constantly in AB phase line voltage 60 degree phase places, AB phase line voltage 120 degree phase places make T1, T4 end constantly; AB phase line voltage 240 degree phase places make T2, T3 conducting constantly, and AB phase line voltage 300 degree phase places make T2, T3 end constantly;
The BC phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge (4) is connected with IGBT insulated gate bipolar transistor T3, T4, T5, T6 respectively; Begin to make T3, T6 conducting constantly in BC phase line voltage 60 degree phase places, BC phase line voltage 120 degree phase places make T3, T6 end constantly; BC phase line voltage 240 degree phase places make T4, T5 conducting constantly, and BC phase line voltage 300 degree phase places make T4, T5 end constantly;
The CA phase line voltage of described insulated gate bipolar transistor IGBT inverter bridge (4) is connected with IGBT insulated gate bipolar transistor T5, T6, T1, T2 respectively; Begin to make T5, T2 conducting constantly in CA phase line voltage 60 degree phase places, CA phase line voltage 120 degree phase places make T5, T2 end constantly; CA phase line voltage 240 degree phase places make T6, T1 conducting constantly, and CA phase line voltage 300 degree phase places make T6, T1 end constantly.
4. elevator high-power electric energy-saving device according to claim 1 is characterized in that: described singlechip controller (2) is a slice 51 serial chip microprocessor 89C52.
5. elevator high-power electric energy-saving control method is characterized in that: this method is the input that is sent to the exterior interrupt of singlechip controller (2) by the output pulse signal of ac line voltage 60 degree phase locking circuit modules; Utilize the synchronizing signal of 60 degree phase time points of ac line voltage as inverter voltage output, spend the lock in time of the moment with 60 of grid line voltage, and produce synchronous circuits by ac line voltage 60 degree Phase synchronization signals as six insulated gate bipolar transistor IGBT conductings of inverter bridge; Add the control system that logical circuit is formed by singlechip controller (2), insulated gate bipolar transistor IGBT inverter bridge (4) is controlled, and requiring conducting and close according to the rules, the inversion of direct voltage finished to three-phase alternating voltage; The input signal of singlechip controller (2) has three-phase synchronous signal and over-current over-voltage protection signal, and output signal is the control signal of turn-on and turn-off of six IGBT of inverter controller; Produce three-phase alternating voltage control signal sequence by singlechip controller (2), and produce the system protection signal; The method of this control system comprises: break in service main program and interrupt service subroutine, wherein:
The concrete job step of this break in service main program is:
Step 1. beginning (40)
Single-chip microcomputer electrification reset program begins (40) operation;
Step 2. internal storage location zero clearing (41)
After executing beginning (40) module, then enter internal storage location zero clearing (41) module, to the internal storage location zero clearing (41) that needs in the program operation process to use;
Step 3. timer 60 degree are (42) regularly
After executing internal storage location zero clearing (41) module, then enter regularly (42) module of timer 60 degree, the single-chip microcomputer timer internal is carried out timer 60 regularly (42) parameter settings of degree, comprise the setting of timer working method, initial value;
The outer interruption of step 4. allows (43)
After executing timer 60 degree timing (42) modules, then enter outer the interruption and allow (43) module, the permission external interrupt is set, comprise external interrupt 0 and external interrupt 1, one of them interrupts for line voltage 60 degree phase places detect constantly, and another interrupts being the error protection input;
Step 5. is waited for and is interrupted (44)
After interrupting outside executing allowing (43) module, then enter and wait for interruption (44) module, this wait interruption comprises the interruption of waiting-line voltage 60 degree phase signals and the interruption of external fault signal;
The concrete job step of the break in service 1 of interrupt service subroutine is:
Step 1. break in service 1 (50)
When single-chip microcomputer respective synchronization signal interruption, break in service 1 (50) begins to carry out;
The be conducted control signals (51) of 60 degree of step 2. output AB
After executing break in service 1 (50) module, then enter be conducted control signal (51) modules of 60 degree of output AB, when output AB phase time, the T1 of insulated gate bipolar transistor IGBT, T4 conducting are the control signals of 60 degree;
The be conducted control signals (52) of 60 degree of step 3. output AC
Execute output AB and be conducted after control signal (51) modules of 60 degree, then enter be conducted control signal (52) modules of 60 degree of output AC, when output AC phase time, the T1 of insulated gate bipolar transistor IGBT, T6 conducting are the control signals of 60 degree;
The be conducted control signals (53) of 60 degree of step 4. output BC
Execute output AC and be conducted after control signal (52) modules of 60 degree, then enter be conducted control signal (53) modules of 60 degree of output BC, when output BC phase time, the T3 of insulated gate bipolar transistor IGBT, T6 conducting are the control signals of 60 degree;
The be conducted control signals (54) of 60 degree of step 5. output BA
Execute output BC and be conducted after control signal (53) modules of 60 degree, then enter be conducted control signal (54) modules of 60 degree of output BA, when output BA phase time, the T3 of insulated gate bipolar transistor IGBT, T2 conducting are the control signals of 60 degree;
The be conducted control signals (55) of 60 degree of step 6. output CA
Execute output BA and be conducted after control signal (54) modules of 60 degree, then enter be conducted control signal (55) modules of 60 degree of output CA, when output CA phase time, the T5 of insulated gate bipolar transistor IGBT, T2 conducting are the control signals of 60 degree;
The be conducted control signals (56) of 60 degree of step 7. output CB
Execute output CA and be conducted after control signal (55) modules of 60 degree, then enter be conducted control signal (56) modules of 60 degree of output CB, when output CB phase time, the T5 of insulated gate bipolar transistor IGBT, T4 conducting are the control signals of 60 degree;
Step 8. interrupts returning A (57)
Execute output CB and be conducted after control signal (56) modules of 60 degree, then enter and interrupt returning (57) module, interrupt service routine is finished and turns back to position before this interrupt service routine is carried out;
The concrete job step of the break in service 2 of interrupt service subroutine is:
Step 1. break in service 2 (60)
When single-chip microcomputer respective external fault-signal interrupts,, break in service 2 (60) begins to carry out;
Step 2. output logic locking signal (61)
After executing break in service 2 (60) modules, then enter output logic locking signal (61) module, single-chip microcomputer output logic locking signal is closed six IGBT insulated gate bipolar transistors of drive axle;
Step 3. interrupts returning B (62)
After executing output logic locking signal (61) module, then enter and interrupt returning (62) module, interrupt service routine is finished and turns back to this preceding position of interrupt service routine execution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100459686A CN101119026A (en) | 2007-09-13 | 2007-09-13 | High-power electric energy-saving device and control method for elevator |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100459686A CN101119026A (en) | 2007-09-13 | 2007-09-13 | High-power electric energy-saving device and control method for elevator |
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| CNA2007100459686A Pending CN101119026A (en) | 2007-09-13 | 2007-09-13 | High-power electric energy-saving device and control method for elevator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668294A (en) * | 2009-09-30 | 2012-09-12 | 西门子公司 | System to store and to transmit electrical power |
| CN111361416A (en) * | 2018-12-26 | 2020-07-03 | 中车唐山机车车辆有限公司 | Control method and control device of medium-voltage power supply system of train and train |
-
2007
- 2007-09-13 CN CNA2007100459686A patent/CN101119026A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668294A (en) * | 2009-09-30 | 2012-09-12 | 西门子公司 | System to store and to transmit electrical power |
| US9142969B2 (en) | 2009-09-30 | 2015-09-22 | Siemens Aktiengesellschaft | System to store and to transmit electrical power |
| CN102668294B (en) * | 2009-09-30 | 2016-01-13 | 西门子公司 | For storing the system with transferring electric power |
| CN111361416A (en) * | 2018-12-26 | 2020-07-03 | 中车唐山机车车辆有限公司 | Control method and control device of medium-voltage power supply system of train and train |
| CN111361416B (en) * | 2018-12-26 | 2021-11-16 | 中车唐山机车车辆有限公司 | Control method and control device of medium-voltage power supply system of train and train |
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