CN102427262B - 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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- CN102427262B CN102427262B CN201110414092.4A CN201110414092A CN102427262B CN 102427262 B CN102427262 B CN 102427262B CN 201110414092 A CN201110414092 A CN 201110414092A CN 102427262 B CN102427262 B CN 102427262B
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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 elevator braking energy feedback 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 large elevator big producing country; Meanwhile, be accompanied by living standards of the people and improve constantly universal with skyscraper, China also becomes elevator and uses the world's strongest nation.Related data shows, the end of the year 2007, the elevator sum that China is applied to every field reaches more than 1,000,000 ones, and the annual increment more than 100,000 ones of maintenance, to the year ends 2010, the elevator of China is used 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 procedure also obtain paying close attention to more and more widely.
Generally, the daily power consumption of a conventional lift is between 5OKWH-150KWH, in running process of elevator, drive the traction machine part of elevator cage operation 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.The electric energy produced in braking procedure for elevator, if carry out on the spot recycling, not only can reduce energy dissipation to a great extent, can also avoid increasing too much optional equipment.
Adopt super capacitor can provide peak power 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 that super capacitor has extended cycle life, the advantages such as cycle efficieny is high, good stability, use it for the recovery storage device of braking energy in 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 elevator braking energy feedback and control system based on super capacitor, reclaim and store the energy produced in the elevator brake process, and provide it to elevator device, thereby reach energy-conservation purpose.
The technical solution that realizes the object of the invention is: a kind of elevator braking energy feedback and control system based on super capacitor, comprise the super capacitor energy-storage module, bidirectional DC-DC converter, the energy feedback control chip, the first hardware protection module, the second hardware protection module, the super capacitor energy-storage module, bidirectional DC-DC converter, the first hardware protection module connects 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 by the frequency converter bus, the energy feedback control chip respectively with the super capacitor energy-storage module, signal conditioning circuit, the second hardware protection module, the frequency converter bus connects respectively,
Whole system be take the energy feedback control chip as core, control bidirectional DC-DC converter by this energy feedback control chip, the first hardware protection module, so that filling safely and effectively of super-capacitor module can reach the frequency converter bussed supply, in the situation that the energy feedback control chip breaks down, the second hardware protection module is cut off the DC-DC converter rapidly, protect reliably the super capacitor energy-storage module, work as elevator in on-position, if detecting the super capacitor energy-storage module, the energy feedback control chip do not reach rated voltage, open the bidirectional DC-DC converter charge circuit, the super capacitor energy-storage module is charged, when the super capacitor energy-storage module being detected and charge to rated voltage, cut off the charge circuit via bidirectional DC-DC converter, dump energy on the frequency converter bus is accessed to the first hardware protection module, when elevator normally moves, if the energy feedback control chip detects the super capacitor energy-storage module in rated voltage, open the bidirectional DC-DC converter discharge loop, the electric energy on the super capacitor energy-storage module is offered to traction machine in the constant voltage mode.
Compared with prior art, its remarkable advantage: (1) carries out constant current charge to super capacitor in the present invention, adds buck inductor in charge circuit, can prevent the impact of too high voltages to super-capacitor module, effectively protects super-capacitor module simultaneously; (2) when the super capacitor supplying power for outside, 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 higher than the voltage of super capacitor, the DC-DC converter also can turn-off immediately, frequency converter bus access energy consumption resistor loop, the safety of protection super-capacitor module; (4) introduce extra hardware protection loop, the electric current and voltage of monitoring super capacitance module and frequency converter bus, if surpass set point, block control signal, turn-off control system in real time, guarantees the safety of system.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The accompanying drawing explanation
Fig. 1 is the elevator braking energy feedback system architecture diagram that the present invention is based on super capacitor;
Fig. 2 is the elevator braking energy feedback system DC-DC converter module circuit theory diagrams that the present invention is based on super capacitor;
Fig. 3 is elevator braking energy feedback system the first hardware protection modular circuit schematic diagram that the present invention is based on super capacitor;
Fig. 4 is elevator braking energy feedback system the 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 braking energy feedback system DSP-2812 pinouts that the present invention is based on super capacitor;
Fig. 6 is the elevator braking energy feedback entire system circuit theory diagrams that the present invention is based on super capacitor.
Embodiment
In conjunction with Fig. 1, the present invention is based on elevator braking energy feedback and the control system of super capacitor, comprise super capacitor energy-storage module 1 (patent applied for, publication No.: CN 101807821A), 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 connects 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 by the frequency converter bus, energy feedback control chip 3 respectively with super capacitor energy-storage module 1, signal conditioning circuit, the second hardware protection module 5, the frequency converter bus connects respectively,
Whole system be take energy feedback control chip 3 as core, control bidirectional DC-DC converter 2 by this energy feedback control chip 3, the first hardware protection module 4, so that filling safely and effectively of super-capacitor module 1 can reach the frequency converter bussed supply, in the situation that energy feedback control chip 3 breaks down, the second hardware protection module 5 is cut off DC-DC converter 2 rapidly, protect reliably super capacitor energy-storage module 1, work as elevator in on-position, if detecting super capacitor energy-storage module 1, energy feedback control chip 3 do not reach rated voltage, open bidirectional DC-DC converter 2 charge circuits, super capacitor energy-storage module 1 is charged, when super capacitor energy-storage module 1 being detected and charge to rated voltage, cut off the charge circuit via bidirectional DC-DC converter 2, dump energy on the frequency converter bus is accessed to the first hardware protection module 4, utilize energy consumption resistor R2 safe release energy, when elevator normally moves, if energy feedback control chip 3 detects super capacitor energy-storage module 1 in rated voltage, open bidirectional DC-DC converter 2 discharge loops, the electric energy on super capacitor energy-storage module 1 is offered to traction machine in 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 by the first relay, this buck inductor L is connected with the first current Hall transducer I1, this the first current Hall transducer I1 respectively with the emitter-base bandgap grading of first via IGBT module S1, the collector electrode of the S2 of the second road IGBT module connects, 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 S1 is connected with the second current Hall transducer I2, 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, 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 respectively diode in parallel with it, while guaranteeing single IGBT work, another is in protected state, control first via IGBT module S1, the second road IGBT module S2 by the pwm signal of energy feedback control chip 3, recently change the break-make degree of first via IGBT module S1, the second road IGBT module S2 by the duty that changes pwm control signal, voltage stabilization during with the assurance electric 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 by two place's voltage signals in discharge process, adopts pid control algorithm, to guarantee the constant output of voltage; Same the first current Hall transducer I1 and the second current Hall transducer I2 also feed back to current parameters energy feedback control chip 3, guarantee the constant input of electric current.The PID dominated formulate is as follows:
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 braking energy feedback of super capacitor and the first hardware protection module 4 of control system and comprise current-limiting resistance R1, solid-state relay, the second relay, bleeder pipe S3, energy consumption resistance R2, the second current Hall transducer I2 in bidirectional DC-DC converter 2 is connected to the second relay, current-limiting resistance R1 is connected in parallel on the second relay two ends, solid-state relay is connected with the 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, 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 moment that the frequency converter bus charges to super capacitor energy-storage module 1, bidirectional DC-DC converter 2 is had to larger rush of current, so need to start current-limiting resistance R1, the second Control starts current-limiting resistance R1, from the frequency converter bus, to the super capacitor energy-storage module, 1 charging starts to setting-up time, the second relay disconnects 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 is still in on-position, and when frequency converter bus end still has high voltage, energy feedback control chip 3 is 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 braking energy feedback that the present invention is based on super capacitor comprises with the second hardware protection module 5 of control system the comparator be connected successively, optocoupler TLP521, logic determining device 74HC20, 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 measured value of the first current Hall transducer I1 and the second current Hall transducer I2 is delivered to comparator through signal conditioning circuit, if lower than set point (those skilled in the art can determine according to rated voltage and the rated current of system the set point of comparator), the second hardware protection module 5 is failure to actuate, if higher than set point, start the second hardware protection module 5.The second hardware protection module 5, as the emergency protection module, can not trigger when normal operating conditions, only has when voltage or the electric current adjusting of feedback system and breaks down, and when charging and discharging circuit generation overvoltage or overcurrent, just can work.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 system or electric current surpass set point, protection module starts immediately, blocks pwm signal, cuts 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 braking 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, detect 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, detect 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 is through buffer stage 74HC425, first via IGBT module S1 in optocoupler HCPL3120 access bidirectional DC-DC converter 2, break-make for charging process first via IGBT module S1 is controlled, pin PWM2, through the second road IGBT module S2 in buffer stage 74HC425, optocoupler HCPL3120 access bidirectional DC-DC converter 2, controls for the break-make of discharge process the second road IGBT module S2, pin GPIOA13 is through the first relay of optocoupler control connection super capacitor and DC-DC converter 2, and pin GPIOA14 connects the 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 braking energy feedback entire system circuit theory diagrams that the present invention is based on super capacitor, describes full implementation process of the present invention in detail.
Charging: when elevator during in on-position, record the voltage at two places by 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 by pin GPIOA13 and GPIOA15, make the first relay and solid-state relay adhesive, super capacitor energy-storage module 1 and frequency converter bus connect into complete loops through DC-DC converter 2, when initial, energy feedback control chip 3 is controlled the second relay disconnection, current-limiting resistance R1 starts, to guarantee that DC-DC converter 2 is not by heavy current impact.The conducting degree that the duty that changes the PWM1 control signal by energy feedback control chip 3 is recently regulated first via IGBT module S1 in DC-DC converter 2, and the electric current on bidirectional DC-DC converter 2 paths is detected by the first current Hall transducer I1 and the second current Hall transducer I2
Real-time Feedback, to energy feedback control chip 3, carries out PID control to electric current, guarantees super capacitor is carried out to constant current charge, if detecting super capacitor energy-storage module 1 terminal voltage, the voltage hall sensor V1 at super capacitor energy-storage module 1 two ends reached its rated value, for protection super capacitor energy-storage module 1, energy feedback control chip 3 sends control signal by pin GPIOA13 and GPIOA15, the first relay and solid-state relay are disconnected, super capacitor energy-storage module 1, frequency converter bus and DC-DC converter 2 overall safeties disconnect, the frequency converter bus accesses 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, by remaining energy on the frequency converter bus by the release of energy consumption resistance R2 safety, to protect the safety of whole energy feedback system.
Electric discharge: when elevator in normal operation or at other in emergency circumstances, the energy feedback that super capacitor energy-storage module 1 stores is to the motor driven systems of elevator, the voltage of super capacitor energy-storage module 1 feedback must keep the be consistent stable operation of guarantee elevator motor of the voltage with frequency converter bus end, so the energy feedback of super capacitor energy-storage module 1 adopts constant voltage discharge, concrete discharge process is as follows: energy feedback control chip 3 sends control signal by pin GPIOA13 and GPIOA15, make relay 2 and solid-state relay adhesive, super capacitor energy-storage module 1 and frequency converter bus connect into complete loops through DC-DC converter 2, and the Voltage Feedback that the voltage hall sensor V1 at the voltage hall sensor V2 at frequency converter bus two ends and super capacitor energy-storage module 1 two ends is detected is to energy feedback control chip 3, adopt pid control algorithm, the conducting degree of by the duty that changes the PWM2 control signal, recently regulating the second road IGBT module S2 in bidirectional DC-DC converter 2, to guarantee that the voltage that super capacitor is connected to frequency converter bus end remains stable.
The present invention in the first hardware protection module 4, is more effective protection whole system more than considering, specially introduces the second hardware protection module 5.The voltage at these module Real-time Obtaining super capacitor energy-storage module 1 two ends and the electric current in the super capacitor loop of flowing through and the voltage of frequency converter bus end and the electric current of flowing through, compare 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 system or electric current surpass set point, protection module starts immediately, blocks pwm signal, cuts 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 (4)
1. elevator braking energy feedback and the control system based on 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) connects successively, bidirectional DC-DC converter (2) is connected with the second hardware protection module (5) with signal conditioning circuit respectively, the first hardware protection module (4) is connected with traction machine by the frequency converter bus, energy feedback control chip (3) respectively with super capacitor energy-storage module (1), signal conditioning circuit, the second hardware protection module (5), the frequency converter bus connects respectively, described 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 by the first relay, this buck inductor L is connected with the first current Hall transducer I1, this the first current Hall transducer I1 respectively with the emitter-base bandgap grading of first via IGBT module S1, the collector electrode of the S2 of the second road IGBT module connects, 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 S1 is connected with the second current Hall transducer I2, 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, 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 respectively diode in parallel with it, while guaranteeing single IGBT work, another is in protected state, control first via IGBT module S1, the second road IGBT module S2 by the pwm signal of energy feedback control chip (3), recently change the break-make degree of first via IGBT module S1, the second road IGBT module S2 by the duty that changes pwm control signal, voltage stabilization during with the assurance electric 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) by two place's voltage signals in discharge process, adopt pid control algorithm, to guarantee the constant output of voltage; Same the first current Hall transducer I1 and the second current Hall transducer I2 also feed back to current parameters energy feedback control chip (3), guarantee the constant input of electric current;
It is core that whole system be take energy feedback control chip (3), control bidirectional DC-DC converter (2) by this energy feedback control chip (3), the first hardware protection module (4), so that the charging safely and effectively of super capacitor energy-storage module (1) reaches the frequency converter bussed supply, in the situation that energy feedback control chip (3) breaks down, the second hardware protection module (5) is cut off bidirectional DC-DC converter (2) rapidly, protect reliably super capacitor energy-storage module (1), work as elevator in on-position, if detecting super capacitor energy-storage module (1), energy feedback control chip (3) do not reach rated voltage, open bidirectional DC-DC converter (2) charge circuit, super capacitor energy-storage module (1) is charged, when super capacitor energy-storage module (1) being detected while charging to rated voltage, cut off the charge circuit via bidirectional DC-DC converter (2), dump energy on the frequency converter bus is accessed to the first hardware protection module (4), when elevator normally moves, if energy feedback control chip (3) detects super capacitor energy-storage module (1) in rated voltage, open bidirectional DC-DC converter (2) discharge loop, the electric energy on super capacitor energy-storage module (1) is offered to traction machine in the constant voltage mode.
2. elevator braking energy feedback and the 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, the second relay, bleeder pipe S3, energy consumption resistance R2, the second current Hall transducer I2 in bidirectional DC-DC converter (2) is connected to the second relay, current-limiting resistance R1 is connected in parallel on the second relay two ends, solid-state relay is connected with the 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, 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 second Control starts current-limiting resistance R1, and from the frequency converter bus, to super capacitor energy-storage module (1), charging starts to setting-up time, and the second relay disconnects 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 is still in on-position, and when frequency converter bus end still has high voltage, energy feedback control chip (3) is opened bleeder pipe S3, start energy consumption resistance R2, the dump energy of safe release frequency converter bus end.
3. elevator braking energy feedback and the control system based on super capacitor according to claim 1, it is characterized in that the second hardware protection module (5) comprises the comparator connected successively, optocoupler TLP521, logic determining device 74HC20, 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 measured value of the first current Hall transducer I1 and the second current Hall transducer I2 is delivered to comparator through signal conditioning circuit, if lower than set point, the second hardware protection module (5) is failure to actuate, if higher than set point, start 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 energy feedback control chip (3) and the signal of pwm control signal buffer stage 74HC245 blocks the control pin, when the voltage in system or electric current surpass set point, protection module starts immediately, block 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.
4. elevator braking energy feedback and the 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, detect 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, detect the second current Hall transducer I2 of the frequency converter bus of flowing through, pin PWM1 is through buffer stage 74HC245, first via IGBT module S1 in optocoupler HCPL3120 access bidirectional DC-DC converter (2), break-make for charging process first via IGBT module S1 is controlled, pin PWM2, through the second road IGBT module S2 in buffer stage 74HC245, optocoupler HCPL3120 access bidirectional DC-DC converter (2), controls for the break-make of discharge process the second road IGBT module S2, pin GPIOA13 is through the first relay of optocoupler control connection super capacitor and DC-DC converter (2), and pin GPIOA14 connects the 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 bleeder 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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| CN113625809B (en) * | 2021-07-28 | 2022-10-28 | 日立电梯（中国）有限公司 | Bus voltage threshold calculation method and bus voltage control method |
| CN117463506B (en) * | 2023-12-26 | 2024-03-22 | 浙江佳环电子有限公司 | Self-adaptive constant-current constant-voltage control high-voltage power supply |
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| CN101807821A (en) * | 2010-03-05 | 2010-08-18 | 南京理工大学 | Energy saving system of elevator |
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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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