CN102427262A - Elevator braking energy feedback and control system based on super capacitor - Google Patents
Elevator braking energy feedback and control system based on super capacitor Download PDFInfo
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- CN102427262A CN102427262A CN2011104140924A CN201110414092A CN102427262A CN 102427262 A CN102427262 A CN 102427262A CN 2011104140924 A CN2011104140924 A CN 2011104140924A CN 201110414092 A CN201110414092 A CN 201110414092A CN 102427262 A CN102427262 A CN 102427262A
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Abstract
The invention discloses an elevator braking energy feedback and control system based on a super capacitor. The system comprises a super capacitor energy storage module, a two-way DC (direct current)-DC convertor, an energy feedback control chip, a first hardware protection module and a second hardware protection module, wherein the super capacitor energy storage module, the two-way DC-DC convertor and the first hardware protection module are successively connected, and the two-way DC-DC convertor is respectively connected with a signal conditioning circuit and the second hardware protection module; and the first hardware protection module is connected with a traction machine through a frequency converter bus, and the energy feedback control chip is respectively connected with the super capacitor energy storage module, the signal conditioning circuit, the second hardware protection module and the frequency converter bus. The system provided by the invention has the advantages of effectively protecting the super capacitor module, guaranteeing the constant pressure discharge, and protecting the safety of the super capacitor module.
Description
Technical field
The invention belongs to and relate to the elevator energy-saving technical field, particularly a kind of feedback of elevator brake energy and control system based on super capacitor.
Background technology
Up to the present, China has become the third place in the world elevator big producing country after the U.S., Japan two big elevator big producing countries; Meanwhile, be accompanied by living standards of the people and improve constantly and the popularizing of skyscraper, China also becomes elevator and uses the world's strongest nation.Related data shows; In the end of the year 2007, the elevator sum that China is applied to every field reaches more than 1,000,000 ones, and keeps annual increment more than 100,000 ones; To the year ends 2010; The elevator of China uses total amount will reach more than 1,300,000 ones, and along with popularizing of elevator, all kinds of problems that exist in the elevator use also obtain concern more and more widely.
Generally; The daily power consumption of a conventional lift is between 5OKWH-150KWH; The traction machine part that drives elevator cage operation in the running process of elevator can consume most of energy; According to relevant statistics, the motor in the traction machine system drags power consumption and accounts for more than 75% of gross energy of elevator operation.Electric energy for elevator produces in braking procedure if carry out recycling on the spot, not only can reduce energy dissipation to a great extent, can also avoid increasing too much optional equipment.
Adopt super capacitor can peak power be provided for elevator starts as the characteristics of the heavy-current discharge of super capacitor own, reduce system for external communication mains supply class requirement in, guaranteed elevator device operation stability and fail safe; Give full play to advantages such as super capacitor has extended cycle life, cycle efficieny height, good stability, use it for the recovery storage device of braking energy in the running process of elevator, the electric energy saving total amount will be very considerable.
Summary of the invention
The object of the present invention is to provide a kind of feedback of elevator brake energy and control system based on super capacitor, recovery also stores the energy that produces in the elevator brake process, and it is offered elevator device, thereby reaches purpose of energy saving.
The technical solution that realizes the object of the invention is: a kind of feedback of elevator brake energy and control system based on super capacitor; Comprise super capacitor energy-storage module, bidirectional DC-DC converter, energy feedback control chip, the first hardware protection module, the second hardware protection module; Super capacitor energy-storage module, bidirectional DC-DC converter, the first hardware protection module connect successively; Bidirectional DC-DC converter signal conditioning circuit respectively is connected with the second hardware protection module; The first hardware protection module is connected with traction machine through the frequency converter bus, and energy feedback control chip is connected respectively with super capacitor energy-storage module, signal conditioning circuit, the second hardware protection module, frequency converter bus respectively;
Whole system is a core with energy feedback control chip; By this energy feedback control chip control bidirectional DC-DC converter, the first hardware protection module; So that filling safely and effectively of super-capacitor module can reach the frequency converter bussed supply, the second hardware protection module is cut off the DC-DC converter rapidly under the situation that energy feedback control chip breaks down, reliable protection super capacitor energy-storage module; Promptly work as elevator and be in on-position; If energy feedback control chip detects the super capacitor energy-storage module and does not reach rated voltage, open the bidirectional DC-DC converter charge circuit, the super capacitor energy-storage module is charged; When detecting the super capacitor energy-storage module and charge to rated voltage, cut off charge circuit via bidirectional DC-DC converter, dump energy on the frequency converter bus is inserted the first hardware protection module; When elevator normally moves, if energy feedback control chip detects the super capacitor energy-storage module and is in rated voltage, open the bidirectional DC-DC converter discharge loop, the electric energy on the super capacitor energy-storage module is offered traction machine with the constant voltage mode.
The present invention compared with prior art, its remarkable advantage: constant current charge is carried out to super capacitor in (1), simultaneously in charge circuit, adds buck inductor, can prevent the impact of too high voltages to super-capacitor module, effectively protects super-capacitor module; (2) when super capacitor is externally supplied power, adopt the PID control strategy, the output voltage of super capacitor is adjusted in real time, guarantee its constant voltage discharge; (3) when super capacitor charges to rated value, if the frequency converter busbar voltage still is higher than the voltage of super capacitor, the DC-DC converter also can turn-off immediately, and the frequency converter bus inserts the power consumption resistance loop, the safety of protection super-capacitor module; (4) introduce additional hardware protection loop, the electric current and voltage of monitoring super capacitance module and frequency converter bus if surpass set point, then blocks control signal, turn-offs control system in real time, guarantees the safety of system.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is the elevator brake energy feedback system structured flowchart that the present invention is based on super capacitor;
Fig. 2 is the elevator brake energy feedback system DC-DC converter module circuit theory diagrams that the present invention is based on super capacitor;
Fig. 3 is the elevator brake energy feedback system first hardware protection modular circuit schematic diagram that the present invention is based on super capacitor;
Fig. 4 is the elevator brake energy feedback system second hardware protection modular circuit schematic diagram that the present invention is based on super capacitor;
Fig. 5 is the minimum control system core of the elevator brake energy feedback system DSP-2812 pinouts that the present invention is based on super capacitor;
Fig. 6 is the elevator brake energy feedback system integrated circuit schematic diagram that the present invention is based on super capacitor.
Embodiment
In conjunction with Fig. 1; The present invention is based on the feedback of elevator brake energy and the control system of super capacitor; Comprise super capacitor energy-storage module 1 (patent applied for; CN 101807821A), bidirectional DC-DC converter 2, energy feedback control chip 3, the first hardware protection module 4, the second hardware protection module 5 publication No.:; Super capacitor energy-storage module 1, bidirectional DC-DC converter 2, the first hardware protection module 4 connect successively; Bidirectional DC-DC converter 2 signal conditioning circuits respectively is connected with the second hardware protection module 5, and the first hardware protection module 4 is passed through the frequency converter bus and is connected with traction machine, and energy feedback control chip 3 is connected respectively with super capacitor energy-storage module 1, signal conditioning circuit, the second hardware protection module 5, frequency converter bus respectively;
Whole system is a core with energy feedback control chip 3; By these energy feedback control chip 3 control bidirectional DC-DC converters 2, the first hardware protection module 4; So that filling safely and effectively of super-capacitor module 1 can reach the frequency converter bussed supply, the second hardware protection module 5 is cut off DC-DC converter 2 rapidly under the situation that energy feedback control chip 3 breaks down, reliable protection super capacitor energy-storage module 1; Promptly work as elevator and be in on-position; If energy feedback control chip 3 detects super capacitor energy-storage module 1 and does not reach rated voltage, open bidirectional DC-DC converter 2 charge circuits, super capacitor energy-storage module 1 is charged; When detecting super capacitor energy-storage module 1 and charge to rated voltage, cut off charge circuit via bidirectional DC-DC converter 2, dump energy on the frequency converter bus is inserted the first hardware protection module 4, utilize power consumption resistance R 2 safe release energy; When elevator normally moves, if energy feedback control chip 3 detects super capacitor energy-storage module 1 and is in rated voltage, open bidirectional DC-DC converter 2 discharge loops, the electric energy on the super capacitor energy-storage module 1 is offered traction machine with the constant voltage mode.
In conjunction with Fig. 2; Above-mentioned bidirectional DC-DC converter 2 comprises first via IGBT module S1, the second road IGBT module S2, buck inductor L, the first diode D1, the second diode D2, the first current Hall transducer I1 and the second current Hall transducer I2; Super capacitor energy-storage module 1 is connected with buck inductor L through first relay; This buck inductor L is connected with the first current Hall transducer I1; This first current Hall transducer I1 is connected with the collector electrode of the S2 of the emitter-base bandgap grading of first via IGBT module S1, the second road IGBT module respectively; The first diode D1 is connected in parallel on the emitter-base bandgap grading and collector electrode of first via IGBT module S1, and the collector electrode of this first via IGBT module S1 is connected with the second current Hall transducer I2, and the second current Hall transducer I2 is connected with the first hardware protection module 4; The second diode D2 is connected in parallel on the emitter-base bandgap grading and collector electrode of the second road IGBT module S2, and the emitter-base bandgap grading of the second road IGBT module S2 is connected to super capacitor energy-storage module 1;
First via IGBT module S1, the second road IGBT module S2 adopt diode parallelly connected with it respectively; When guaranteeing that single IGBT works; Another is in protected state, controls first via IGBT module S1, the second road IGBT module S2 by the pwm signal of energy feedback control chip 3, recently changes the break-make degree of first via IGBT module S1, the second road IGBT module S2 through the duty that changes pwm control signal; Voltage is stable during with the assurance discharge, current constant during charging; When the frequency converter bus charges to super capacitor energy-storage module 1, first via IGBT module S1 effect, the second diode D2 conducting, buck inductor L reduces the impact of rechargeable electrical energy to super capacitor energy-storage module 1, reduces charging voltage; The voltage hall sensor V2 of the voltage hall sensor V1 at super capacitor energy-storage module 1 two ends and frequency converter bus end feeds back to energy feedback control chip 3 with two place's voltage signals in the discharge process, adopts pid control algorithm, to guarantee the constant output of voltage; The same first current Hall transducer I1 and the second current Hall transducer I2 also feed back to energy feedback control chip 3 with current parameters, guarantee the constant input of electric current.PID control formula is following:
Δu(k)＝Ae(k)-Be(k-1)+Ce(k-2)；
.C A=Kp (1+T/TI+TD/T) wherein, B=Kp (1+2TD/T)., C=KpTD/T.
In conjunction with Fig. 3; The present invention is based on the elevator brake energy feedback of super capacitor and the first hardware protection module 4 of control system and comprise current-limiting resistance R1, solid-state relay, second relay, bleeder pipe S3, energy consumption resistance R2; The second current Hall transducer I2 in the bidirectional DC-DC converter 2 is connected to second relay, and current-limiting resistance R1 is connected in parallel on the second relay two ends, and solid-state relay is connected with second relay; This solid-state relay is connected to the collector electrode of bleeder pipe S3; The collector electrode of this bleeder pipe S3 also is connected with the frequency converter bus, and the emitter-base bandgap grading of this bleeder pipe S3 is connected to the end of energy consumption resistance R2, the other end ground connection of this energy consumption resistance R2;
The frequency converter bus is to the moment of super capacitor energy-storage module 1 charging; Bidirectional DC-DC converter 2 is had bigger rush of current, so need to start current-limiting resistance R1, the control of second relay starts current-limiting resistance R1; 1 charging begins to setting-up time to the super capacitor energy-storage module from the frequency converter bus; Second relay breaks off all the time, and current-limiting resistance R1 starts, and guarantees the safe operation of bidirectional DC-DC converter 2; In the relay control module of frequency converter bus bar side, adopt solid-state relay, to prevent under high voltage the electric arc effect that common relay can cause.When super capacitor energy-storage module 1 charges to rated voltage, elevator still is in on-position, and when frequency converter bus end still had high voltage, energy feedback control chip 3 was opened bleeder pipe S3, starts energy consumption resistance R2, the dump energy of safe release frequency converter bus end.
In conjunction with Fig. 4; The elevator brake energy feedback that the present invention is based on super capacitor comprises comparator, optocoupler TLP521, the logic determines device 74HC20 that is connected successively with the second hardware protection module 5 of control system; The measured value of the voltage hall sensor V2 of the voltage hall sensor V1 at super capacitor energy-storage module 1 two ends, frequency converter bus end, the first current Hall transducer I1 and the second current Hall transducer I2 is delivered to comparator through signal conditioning circuit; If be lower than set point (those skilled in the art can decide according to the rated voltage and the rated current of system the set point of comparator); The second hardware protection module 5 is failure to actuate; If be higher than set point, then start the second hardware protection module 5.The second hardware protection module 5 can not trigger when normal operating conditions as the emergency protection module, has only voltage or Current Regulation when feedback system to break down, and just can work when charging and discharging circuit generation overvoltage or overcurrent.The output signal of the second hardware protection module 5 is received the nPDPINT interruption in power protection pin of DSP control core and the signal of pwm control signal buffer stage 74HC245 blocks the control pin.When the voltage in the system or electric current surpassed set point, protection module started immediately, blocked pwm signal, cut off being connected between bidirectional DC-DC converter 2 and super capacitor energy-storage module 1 and frequency converter bus, in case system is because of overvoltage or overcurrent damage.
In conjunction with Fig. 5; The present invention is based on the elevator brake energy feedback of super capacitor and the energy feedback control chip 3 of control system and adopt DSP-2812, its pin ADCB0 connects signal conditioning circuit, detects the voltage hall sensor V1 at super capacitor energy-storage module 1 two ends; Pin ADCB1 connects signal conditioning circuit; Detect the first current Hall transducer I1 of the super capacitor energy-storage module 1 of flowing through, pin ADCB2 connects signal conditioning circuit, detects the voltage hall sensor V2 at frequency converter bus two ends; Pin ADCB3 connects signal conditioning circuit; Detect the second current Hall transducer I2 of the frequency converter bus of flowing through, pin PWM1 inserts the first via IGBT module S1 in the bidirectional DC-DC converter 2 through buffer stage 74HC425, optocoupler HCPL3120, is used for the break-make control of charging process first via IGBT module S1; Pin PWM2 inserts the second road IGBT module S2 in the bidirectional DC-DC converter 2 through buffer stage 74HC425, optocoupler HCPL3120, is used for the break-make control of discharge process the second road IGBT module S2; Pin GPIOA13 is through first relay of optocoupler control connection super capacitor and DC-DC converter 2, and pin GPIOA14 connects second relay that starts current-limiting resistance R1 through optocoupler; Pin GPIOA15 is through the solid-state relay of optocoupler control connection frequency converter bus and DC-DC converter 2; Pin GPIO15B13 controls the bleed off pipe S3 in the first hardware protection module 4 through optocoupler, controls the break-make of the first hardware protection module 4.
Fig. 6 is the elevator brake energy feedback system integrated circuit schematic diagram that the present invention is based on super capacitor, specifies full implementation process of the present invention.
Charging: when elevator is in on-position; Record the voltage at two places through the voltage hall sensor V1 at super capacitor energy-storage module 1 two ends and the voltage hall sensor V2 at frequency converter bus two ends; If super capacitor energy-storage module 1 terminal voltage is lower than rated value, energy feedback control chip 3 just sends control signal through pin GPIOA13 and GPIOA15, makes first relay and solid-state relay adhesive; Super capacitor energy-storage module 1 connects into complete loops with the frequency converter bus through DC-DC converter 2; Energy feedback control chip 3 controls second relay breaks off when initial, and current-limiting resistance R1 starts, to guarantee that DC-DC converter 2 is not by heavy current impact.Change the conducting degree that the duty of PWM1 control signals is recently regulated first via IGBT module S1 in the DC-DC converter 2 through energy feedback control chip 3; And the electric current on bidirectional DC-DC converter 2 paths is detected through the first current Hall transducer I1 and the second current Hall transducer I2
Feed back to energy feedback control chip 3 in real time, electric current is carried out PID control, guarantee super capacitor is carried out constant current charge; If the voltage hall sensor V1 at super capacitor energy-storage module 1 two ends detects super capacitor energy-storage module 1 terminal voltage and has reached its rated value; Be protection super capacitor energy-storage module 1; Energy feedback control chip 3 sends control signal through pin GPIOA13 and GPIOA15; First relay and solid-state relay are broken off, and super capacitor energy-storage module 1, frequency converter bus and DC-DC converter 2 overall safeties break off, and the frequency converter bus inserts the first hardware protection module 4; Energy feedback control chip 3 sends control signal through pin GPIO15B13; Open the bleed off pipe S3 in the first hardware protection module 4, with energy remaining on the frequency converter bus by the release of energy consumption resistance R2 safety, to protect the safety of whole energy feedback system.
Discharge: when elevator is in normal operation or at other in emergency circumstances, super capacitor energy-storage module 1 energy stored is fed back to the motor driven systems of elevator; The voltage of super capacitor energy-storage module 1 feedback must keep the voltage with frequency converter bus end to be consistent could guarantee the stable operation of elevator motor; So constant voltage discharge is adopted in the energy feedback of super capacitor energy-storage module 1; Concrete discharge process is following: energy feedback control chip 3 sends control signal through pin GPIOA13 and GPIOA15; Make relay 2 and solid-state relay adhesive; Super capacitor energy-storage module 1 connects into complete loops with the frequency converter bus through DC-DC converter 2; And with the voltage hall sensor V2 at frequency converter bus two ends and the detected Voltage Feedback of voltage hall sensor V1 to the energy feedback control chip 3 at super capacitor energy-storage module 1 two ends; Adopt pid control algorithm, the conducting degree of recently regulating the second road IGBT module S2 in the bidirectional DC-DC converter 2 through the duty that changes the PWM2 control signal remains stable to guarantee the voltage that super capacitor is connected to frequency converter bus end.
The present invention in the first hardware protection module 4, is more effective protection whole system more than considering, specially introduce the second hardware protection module 5.This module is obtained electric current and the voltage of frequency converter bus end and the electric current of flowing through in the voltage at super capacitor energy-storage module 1 two ends and the super capacitor loop of flowing through in real time, compares with set point.The output signal of the second hardware protection module 5 is received the nPDPINT interruption in power protection pin of energy feedback control chip 3 and the signal of pwm control signal buffer stage 74HC245 blocks the control pin.When the voltage in the system or electric current surpassed set point, protection module started immediately, blocked pwm signal, cut off being connected between bidirectional DC-DC converter 2 and super capacitor energy-storage module 1 and frequency converter bus, in case system is because of overvoltage or overcurrent damage.
Claims (5)
1. feedback of elevator brake energy and control system based on a super capacitor; It is characterized in that comprising super capacitor energy-storage module (1), bidirectional DC-DC converter (2), energy feedback control chip (3), the first hardware protection module (4), the second hardware protection module (5); Super capacitor energy-storage module (1), bidirectional DC-DC converter (2), the first hardware protection module (4) connect successively; Bidirectional DC-DC converter (2) signal conditioning circuit respectively is connected with the second hardware protection module (5); The first hardware protection module (4) is connected with traction machine through the frequency converter bus, and energy feedback control chip (3) is connected respectively with super capacitor energy-storage module (1), signal conditioning circuit, the second hardware protection module (5), frequency converter bus respectively;
Whole system is a core with energy feedback control chip (3); By this energy feedback control chip (3) control bidirectional DC-DC converter (2), the first hardware protection module (4); So that filling safely and effectively of super-capacitor module (1) can reach the frequency converter bussed supply; The second hardware protection module (5) is cut off DC-DC converter (2) rapidly under the situation that energy feedback control chip (3) breaks down; Reliable protection super capacitor energy-storage module (1) is promptly worked as elevator and is in on-position, if energy feedback control chip (3) detects super capacitor energy-storage module (1) and do not reach rated voltage; Open bidirectional DC-DC converter (2) charge circuit, super capacitor energy-storage module (1) is charged; When detecting super capacitor energy-storage module (1) when charging to rated voltage, cut off charge circuit via bidirectional DC-DC converter (2), dump energy on the frequency converter bus is inserted the first hardware protection module (4); When elevator normally moves; If energy feedback control chip (3) detects super capacitor energy-storage module (1) and is in rated voltage; Open bidirectional DC-DC converter (2) discharge loop, the electric energy on the super capacitor energy-storage module (1) is offered traction machine with the constant voltage mode.
2. feedback of elevator brake energy and control system based on super capacitor according to claim 1; It is characterized in that bidirectional DC-DC converter (2) comprises first via IGBT module S1, the second road IGBT module S2, buck inductor L, the first diode D1, the second diode D2, the first current Hall transducer I1 and the second current Hall transducer I2; Super capacitor energy-storage module (1) is connected with buck inductor L through first relay; This buck inductor L is connected with the first current Hall transducer I1; This first current Hall transducer I1 is connected with the collector electrode of the S2 of the emitter-base bandgap grading of first via IGBT module S1, the second road IGBT module respectively; The first diode D1 is connected in parallel on the emitter-base bandgap grading and collector electrode of first via IGBT module S1; The collector electrode of this first via IGBT module S 1 is connected with the second current Hall transducer I2; The second current Hall transducer I2 is connected with the first hardware protection module (4), and the second diode D2 is connected in parallel on the emitter-base bandgap grading and collector electrode of the second road IGBT module S2, and the emitter-base bandgap grading of the second road IGBT module S2 is connected to super capacitor energy-storage module (1);
First via IGBT module S1, the second road IGBT module S2 adopt diode parallelly connected with it respectively; When guaranteeing that single IGBT works; Another is in protected state, controls first via IGBT module S1, the second road IGBT module S2 by the pwm signal of energy feedback control chip (3), recently changes the break-make degree of first via IGBT module S1, the second road IGBT module S2 through the duty that changes pwm control signal; Voltage is stable during with the assurance discharge, current constant during charging; When the frequency converter bus charges to super capacitor energy-storage module (1), first via IGBT module S1 effect, the second diode D2 conducting, buck inductor L reduces the impact of rechargeable electrical energy to super capacitor energy-storage module (1), reduces charging voltage; The voltage hall sensor V1 at super capacitor energy-storage module (1) two ends and the voltage hall sensor V2 of frequency converter bus end feed back to energy feedback control chip (3) with two place's voltage signals in the discharge process; Adopt pid control algorithm, to guarantee the constant output of voltage; The same first current Hall transducer I1 and the second current Hall transducer I2 also feed back to energy feedback control chip (3) with current parameters, guarantee the constant input of electric current.
3. feedback of elevator brake energy and control system based on super capacitor according to claim 1; It is characterized in that the first hardware protection module (4) comprises current-limiting resistance R1, solid-state relay, second relay, bleeder pipe S3, energy consumption resistance R2; The second current Hall transducer I2 in the bidirectional DC-DC converter (2) is connected to second relay; Current-limiting resistance R1 is connected in parallel on the second relay two ends; Solid-state relay is connected with second relay, and this solid-state relay is connected to the collector electrode of bleeder pipe S3, and the collector electrode of this bleeder pipe S3 also is connected with the frequency converter bus; The emitter-base bandgap grading of this bleeder pipe S3 is connected to the end of energy consumption resistance R2, the other end ground connection of this energy consumption resistance R2;
The control of second relay starts current-limiting resistance R1, and charging begins to setting-up time to super capacitor energy-storage module (1) from the frequency converter bus, and second relay breaks off all the time, and current-limiting resistance R1 starts, and guarantees the safe operation of bidirectional DC-DC converter (2); When super capacitor energy-storage module (1) charges to rated voltage; Elevator still is in on-position, and when frequency converter bus end still had high voltage, energy feedback control chip (3) was opened bleeder pipe S3; Start energy consumption resistance R2, the dump energy of safe release frequency converter bus end.
4. feedback of elevator brake energy and control system based on super capacitor according to claim 1; It is characterized in that the second hardware protection module (5) comprises comparator, optocoupler TLP521, the logic determines device 74HC20 that connects successively; The measured value of the voltage hall sensor V1 at super capacitor energy-storage module (1) two ends, the voltage hall sensor V2 of frequency converter bus end, the first current Hall transducer I1 and the second current Hall transducer I2 is delivered to comparator through signal conditioning circuit; If be lower than set point; The second hardware protection module (5) is failure to actuate, if be higher than set point, then starts the second hardware protection module (5); The output signal of the second hardware protection module (5) is received the nPDPINT interruption in power protection pin of DSP control core and the signal of pwm control signal buffer stage 74HC245 blocks the control pin.When the voltage in the system or electric current surpassed set point, protection module started immediately, blocked pwm signal, cut off being connected between bidirectional DC-DC converter (2) and super capacitor energy-storage module (1) and frequency converter bus, in case system is because of overvoltage or overcurrent damage.
5. feedback of elevator brake energy and control system based on super capacitor according to claim 1; It is characterized in that energy feedback control chip (3) adopts DSP-2812; Its pin ADCB0 connects signal conditioning circuit; Detect the voltage hall sensor V1 at super capacitor energy-storage module (1) two ends, pin ADCB1 connects signal conditioning circuit, detects the first current Hall transducer I1 of the super capacitor energy-storage module (1) of flowing through; Pin ADCB2 connects signal conditioning circuit; Detect the voltage hall sensor V2 at frequency converter bus two ends, pin ADCB3 connects signal conditioning circuit, detects the second current Hall transducer I2 of the frequency converter bus of flowing through; Pin PWM1 inserts the first via IGBT module S1 in the bidirectional DC-DC converter (2) through buffer stage 74HC425, optocoupler HCPL3120, is used for the break-make control of charging process first via IGBT module S1; Pin PWM2 inserts the second road IGBT module S2 in the bidirectional DC-DC converter (2) through buffer stage 74HC425, optocoupler HCPL3120, is used for the break-make control of discharge process the second road IGBT module S2; Pin GPIOA13 is through first relay of optocoupler control connection super capacitor and DC-DC converter (2), and pin GPIOA14 connects second relay that starts current-limiting resistance R1 through optocoupler; Pin GPIOA15 is through the solid-state relay of optocoupler control connection frequency converter bus and DC-DC converter (2); Pin GPIO15B13 controls the bleed off pipe S3 in the first hardware protection module (4) through optocoupler, controls the break-make of the first hardware protection module (4).
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| CN201110414092.4A CN102427262B (en) | 2011-12-13 | 2011-12-13 | Elevator braking energy feedback and control system based on super capacitor |
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| CN201110414092.4A CN102427262B (en) | 2011-12-13 | 2011-12-13 | Elevator braking energy feedback and control system based on super capacitor |
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Application publication date: 20120425 Assignee: Jiangsu General Elevator Co., Ltd. Assignor: Nanjing University of Science and Technology Contract record no.: 2014320000727 Denomination of invention: Elevator braking energy feedback and control system based on super capacitor Granted publication date: 20140101 License type: Exclusive License Record date: 20141120 |
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