CN104836308A - Solar energy elevator control system and method - Google Patents
Solar energy elevator control system and method Download PDFInfo
- Publication number
- CN104836308A CN104836308A CN201510281966.1A CN201510281966A CN104836308A CN 104836308 A CN104836308 A CN 104836308A CN 201510281966 A CN201510281966 A CN 201510281966A CN 104836308 A CN104836308 A CN 104836308A
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- elevator
- solar
- energy
- converter
- solar energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention provides a solar energy elevator control system. The system includes a solar energy controller, a control module, a bidirectional DC/DC converter, an elevator control frequency converter and a traction motor controller; the elevator control frequency converter is connected with the traction motor controller through a CAN bus, and the control module is in communication connection with the solar energy controller, the elevator control frequency converter and the traction motor controller. The solar energy elevator control system applies solar energy to energy conservation of an elevator, proposes a new energy ideal, and satisfies a new energy requirement. In use, solar energy directly supplies power to a direct current bus of the elevator control frequency controller through the bidirectional DC/DC converter, but not through a method in which direct current is firstly converted to alternating current through an inversion method and the power is supplied to the elevator, and two intermediate links of inversion and rectification are omitted, thereby improving the utilization efficiency of solar energy, and compared with an inversion scheme, reliability of a whole system is higher. A super capacitor is used as an energy storage element, and redundant solar energy and energy generated by elevator power generation are stored in the super capacitor.
Description
Technical field
The present invention relates to new forms of energy application, be specifically related to a kind of Solar-energy elevator control system and method.
Background technology
Solar energy is more and more universal as the application of a kind of inexhaustible clean energy resource in life, in the application of solar energy, wherein a kind of application mode is opto-electronic conversion application and solar cell at present, have in the application of middle low power solar cell is that direct voltage solar cell produces first is converted by DC/DC and then by DC/AC inversion greatly, become alternating current and send electrical network back to, thus realize Solar use.There is two-stage electric energy conversion in this applications, whole efficiency is lower, and global reliability is not high yet, is therefore necessary to seek a kind of new Solar use mode.
Elevator uses more and more in daily life, and elevator energy consumption proportion in building energy consumption is also more and more higher, and recent country advocates energy saving building again and again, and the energy consumption therefore how reducing elevator attracts people's attention.The energy-conserving elevator of existing market is all adopt Frequency Converter Control to drag to draw motor run thus realize energy-conservation, and frequency converter is first input AC inversion of direct current, and then the interchange control that direct current changes changeable frequency into is dragged draws motor.Elevator is in actual motion, and elevator is in generating state under having nearly half state, and is all that the mode taking resistance to consume energy consumes at present for the electric energy of this part Elevator power generation, not only causes the waste of the energy but also causes the pollution of environment.In order to utilize this part energy, commercially have a kind of energy saver at present, it this part energy back telegram in reply net, thus reaches energy saving by inverting.But because output voltage is inversion alternating current source, when feeding back to electrical network, inevitably can form harmonic pollution to electrical network.
Summary of the invention
The present invention is in order to solve the waste electric energy that the above-mentioned existing elevator variable frequency controller mentioned exists and shortcoming electrical network being produced to harmonic pollution, there is provided a kind of Solar-energy elevator control system can utilize solar energy directly for elevator is powered, and without rectifying and wave-filtering, improve the stability of whole system, and the power storage produced in unnecessary solar energy and elevator can being run is in super capacitor, for the operation of elevator is powered.
Concrete, the invention provides a kind of Solar-energy elevator control system, it comprises controller for solar, control module, two-way DC/DC converter, elevator controlling frequency converter and drags and draws electric machine controller;
Described elevator variable frequency controller is drawn electric machine controller be connected by CAN with described dragging, described control module and described controller for solar, elevator controlling frequency converter and dragging draw electric machine controller respectively communication be connected;
Described controller for solar comprises solar energy power generating plate, solar control chip, voltage management module and super capacitor, and the output of described solar energy power generating plate is directly the DC bus powered of described elevator controlling frequency converter by two-way DC/DC converter;
The control output end of described solar control chip connects the input of described voltage management module, the output of described voltage management module connects the input of described super capacitor, so that solar energy is converted to power storage in described super capacitor by described solar energy power generating plate, described super capacitor is directly the DC bus powered of described elevator controlling frequency converter by two-way DC/DC converter.
Preferably, described solar control chip comprises core CPU module, core CPU module comprises the first single-chip microcomputer and peripheral circuit, the output port of one group of IO of the first single-chip microcomputer connects the input of PWM driving chip, the output of described PWM driving chip connects the control end of IGBT insulated gate bipolar transistor, for controlling the break-make of described IGBT insulated gate bipolar transistor, described IGBT insulated gate bipolar transistor connects the input of described solar energy power generating plate and described voltage management module.
Preferably, the output of solar energy power generating plate connects the input of the peripheral circuit of described control module, the output of the peripheral circuit of described control module connects the input of described two-way DC/DC converter, and the output of described two-way DC/DC converter connects the input of the DC bus of described elevator controlling frequency converter.
Preferably, described control module is also provided with voltage acquisition module, and for gathering described super-capacitor voltage to judge whether to open mains-supplied, when voltage is lower than predetermined voltage, described control module opens mains-supplied.
Preferably, described control module comprises man machine operation interface, display panel, standby electricity source plate, Master control chip and ancillary equipment, and described Master control chip draws electric machine controller parameter for gathering described man machine operation interface parameter, display panel parameter, ancillary equipment parameter, elevator controlling converter parameter and dragging.
Preferably, drag described in draw electric machine controller connected by CAN described in drag and draw motor.
Preferably, when super-capacitor voltage is lower than predetermined voltage, described control module by standby electricity source plate described in Control for described elevator controlling frequency converter provides power supply.
Preferably, described elevator controlling frequency converter by described two-way DC/DC converter by the power storage that produces in running process of elevator in described super capacitor.
Preferably, described Master control chip is connected with the communication of described two-way DC/DC converter by CAN.
Preferably, a kind of method elevator controlled according to the above-mentioned Solar-energy elevator control system mentioned, it comprises the following steps:
1. solar energy power generating plate gathers solar energy to elevator controlling inverter supply, the input of the peripheral circuit of the output link control module of solar energy power generating plate, the output of the peripheral circuit of control module connects the input of two-way DC/DC converter, the output of two-way DC/DC converter connects the input of the DC bus of elevator controlling frequency converter, completes the direct power supply to elevator controlling frequency converter;
2. elevator controlling frequency converter by two-way DC/DC converter by the power storage that produces in running process of elevator in super capacitor;
3. unnecessary solar energy is stored in super capacitor by solar energy power generating plate, and when needed, super capacitor is powered to elevator controlling frequency converter by two-way DC/DC converter;
4. voltage acquisition module gathers the real-time voltage of super capacitor, when super-capacitor voltage is lower than predetermined voltage, described control module by Control standby electricity source plate for elevator controlling frequency converter provides power supply;
5. Master control chip draws electric machine controller parameter for gathering described man machine operation interface parameter, display panel parameter, ancillary equipment parameter and elevator controlling converter parameter and dragging, and monitors the operation of elevator.
Advantage of the present invention is as described below:
1, by Application of Solar Energy in elevator energy-saving, propose a kind of new energy theory, meet new forms of energy requirement, and saved a large amount of electric energy, reach protection of the environment, cost-saving object.
2, in use, by solar energy by the main flow bussed supply of two-way DC/DC converter directly to elevator controlling frequency converter, namely directly direct current supply is provided for elevator controlling frequency converter, instead of first change direct current into alternating current again to elevator supply by inverting, this mode eliminates inversion and rectification two intermediate links, thus improve the utilization ratio of solar energy, compared to inversion scheme, the reliability of entire system is also improved.
3, adopt super capacitor as energy-storage travelling wave tube, the energy storage that unnecessary solar energy and Elevator power generation are produced is in super capacitor, need to be discharged to the DC bus of elevator frequency converter by DC converting again during the energy when elevator runs, increase the utilization ratio of the electric energy produced during solar energy and elevator are run.
4, whole Solar-energy elevator control system adopts all-digitized demodulator, in order to improve energy-saving effect in maximum efficiency, taking the size of the energy output of pre-detection elevator, deciding to super capacitor charge power.
5, voltage acquisition module carries out Real-time Collection judgement to the dump energy of super capacitor, when the voltage of the dump energy of super capacitor is lower than predetermined voltage, control module opens standby electricity source plate, and changing mains electricity into direct current by standby electricity source plate is that elevator is powered.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of Solar-energy elevator control system of the present invention;
Fig. 2 is the structural schematic block diagram of Solar-energy elevator control system of the present invention;
Fig. 3 is the circuit diagram of solar control system of the present invention;
Fig. 4 is the circuit diagram of solar control chip of the present invention; And
Fig. 5 is the circuit diagram of voltage acquisition module of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, structure of the present invention is described further:
As shown in Figure 1, the invention provides a kind of Solar-energy elevator control system, it comprises controller for solar 1, control module 2, two-way DC/DC converter 3, elevator controlling frequency converter 4 and drags and draws electric machine controller 5.
Elevator variable frequency controller 4 is drawn electric machine controller 5 and is connected by CAN with dragging, control module 2 and controller for solar 1, elevator controlling frequency converter 4 and dragging draw electric machine controller 5 respectively communication be connected, and to elevator controlling frequency converter 4 and drag the ruuning situation of drawing electric machine controller 5 and monitor in real time.
Controller for solar 1 comprises solar energy power generating plate 11, solar control chip 12, voltage management module 13 and super capacitor 14, the control output end of solar control chip 12 connects the input of described voltage management module, the output of voltage management module 13 connects the input of super capacitor 14, so that solar energy is converted to power storage in super capacitor 14 by solar energy power generating plate 11, super capacitor 14 is directly the DC bus powered of elevator controlling frequency converter 4 by two-way DC/DC converter 3, instead of first change direct current into alternating current again to elevator supply by inverting, this mode eliminates inversion and rectification two intermediate links, thus improve the utilization ratio of solar energy, compared to inversion scheme, the reliability of entire system is also improved.
Solar control chip 12 comprises core CPU module, core CPU module comprises the first single-chip microcomputer and peripheral circuit, the output port of one group of IO of the first single-chip microcomputer connects the input of PWM driving chip, the output of PWM driving chip connects the control end of IGBT insulated gate bipolar transistor, for the break-make of control IGBT insulated gate bipolar transistor, IGBT insulated gate bipolar transistor connects the input of solar energy power generating plate and described voltage management module, when solar energy is more, unnecessary solar energy is stored in super capacitor 14 by solar energy power generating plate 11.
Further, the input of the peripheral circuit of the output link control module 2 of solar energy power generating plate 11, the output of the peripheral circuit of control module 2 connects the input of two-way DC/DC converter 3, the output of two-way DC/DC converter 3 connects the input of the DC bus of elevator controlling frequency converter 4, and solar energy power generating plate carries DC power supply directly to elevator controlling frequency converter 4.
Further, control module 2 is also provided with voltage acquisition module 21, and for gathering the voltage of super capacitor 14 to judge whether to open mains-supplied, when voltage is lower than predetermined voltage, described control module 2 opens mains-supplied.
Preferably, control module 2 also comprises man machine operation interface 22, display panel 23, standby electricity source plate 24, Master control chip 25 and ancillary equipment, man machine operation interface 22 is for carrying out human-machine operation, Master control chip 25, for gathering the parameter of man machine operation interface 22, parameter, the parameter of ancillary equipment, the parameter of elevator controlling frequency converter 4 of display panel 23 and dragging the parameter of drawing electric machine controller 5, is monitored the operation conditions of elevator.
In an embodiment, Master control chip 25 is connected with communication module, when the operation conditions of elevator goes wrong, can send alarm by communication module to user.
Drag and draw electric machine controller 5 and connected by CAN and drag and draw motor, draw motor control dragging.
Voltage acquisition module 21 gathers the voltage of super capacitor 14 to judge whether to open mains-supplied, when voltage is lower than predetermined voltage, namely when the dump energy of super capacitor 14 is lower, control module 2 by Control standby electricity source plate for elevator controlling frequency converter 4 provides power supply.
When elevator runs, can electric energy be produced, elevator controlling frequency converter 4 by two-way DC/DC converter 3 by the power storage that produces in running process of elevator in super capacitor 14.
Preferably, Master control chip 25 is connected with the communication of two-way DC/DC converter 3 by CAN.
A kind ofly to be described further the method that elevator controls according to the above-mentioned Solar-energy elevator control system mentioned of the present invention below in conjunction with embodiment and accompanying drawing, it comprises the following steps:
Solar energy power generating plate 11 gathers solar energy and powers to elevator controlling frequency converter 4, the input of the peripheral circuit of the output link control module of solar energy power generating plate 11, the output of the peripheral circuit of control module connects the input of two-way DC/DC converter 3, the output of two-way DC/DC converter 3 connects the input of the DC bus of elevator controlling frequency converter 4, complete the direct power supply to elevator controlling frequency converter 4, avoid the link of rectifying and wave-filtering, improve the utilization ratio to solar energy.
Unnecessary solar energy is stored in super capacitor 14 by solar energy power generating plate 11, and when needed, super capacitor 14 is powered to elevator controlling frequency converter 4 by two-way DC/DC converter 3.
When elevator runs, dragging can because electromagnetic induction under drawing electric machine operation state, produce electric energy, the alternating current produced is passed through rectification-feedback unit by elevator frequency converter 4, and be direct current by AC rectification, the direct current of output sends two-way DC/DC converter 3 to, two-way DC/DC converter 3 is by the direct current of feedback, converted by reverse DC/DC, produce and be applicable to the isoparametric direct current of super capacitor 14 voltage, for super capacitor 14 charges.
Voltage acquisition module gathers the real-time voltage of super capacitor 14, when super capacitor 14 voltage is lower than predetermined voltage, namely when the dump energy of super capacitor 14 is too low, control module 2 by Control standby electricity source plate 24 through rectification filtering unit 240 rectifying and wave-filtering for elevator controlling frequency converter 4 provides power supply, in actual applications, because the memory capacity of super capacitor 14 is comparatively large, the enough elevators of electric energy of general super capacitor 14 storage inside run and use, and can not mains-supplied.
Master control chip 25 draws electric machine controller parameter for gathering described man machine operation interface parameter, display panel parameter, ancillary equipment parameter and elevator controlling converter parameter and dragging, and monitors the operation of elevator.Master control chip 25 is connected with communication module, when the operation conditions of elevator goes wrong, can send alarm by communication module to user.
Advantage of the present invention is as described below:
1, by Application of Solar Energy in elevator energy-saving, propose a kind of new energy theory, meet new forms of energy requirement, and saved a large amount of electric energy, reach protection of the environment, cost-saving object.
2, in use, by solar energy by the main flow bussed supply of two-way DC/DC converter 3 directly to elevator controlling frequency converter 4, namely directly direct current supply is provided for elevator controlling frequency converter 4, instead of first change direct current into alternating current again to elevator supply by inverting, this mode eliminates inversion and rectification two intermediate links, thus improve the utilization ratio of solar energy, compared to inversion scheme, the reliability of entire system is also improved.
3, adopt super capacitor 14 as energy-storage travelling wave tube, the energy storage that unnecessary solar energy and Elevator power generation are produced is in super capacitor 14, need to be discharged to the DC bus of elevator frequency converter by DC converting again during the energy when elevator runs, increase the utilization ratio of the electric energy produced during solar energy and elevator are run.
4, whole Solar-energy elevator control system adopts all-digitized demodulator, in order to improve energy-saving effect in maximum efficiency, taking the size of the energy output of pre-detection elevator, deciding to charge to super capacitor 14.
5, voltage acquisition module carries out Real-time Collection judgement to the dump energy of super capacitor 14, when the voltage of the dump energy of super capacitor 14 is lower than predetermined voltage, control module 2 opens standby electricity source plate, and changing mains electricity into direct current by standby electricity source plate 24 is that elevator is powered.
Last it is noted that above-described each embodiment is only for illustration of technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or to wherein partly or entirely technical characteristic carry out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a Solar-energy elevator control system, is characterized in that: it comprises controller for solar, control module, two-way DC/DC converter, elevator controlling frequency converter and drag and draws electric machine controller;
Described elevator variable frequency controller is drawn electric machine controller be connected by CAN with described dragging, described control module and described controller for solar, elevator controlling frequency converter and dragging draw electric machine controller respectively communication be connected;
Described controller for solar comprises solar energy power generating plate, solar control chip, voltage management module and super capacitor, and the output of described solar energy power generating plate is directly the DC bus powered of described elevator controlling frequency converter by two-way DC/DC converter;
The control output end of described solar control chip connects the input of described voltage management module, the output of described voltage management module connects the input of described super capacitor, so that solar energy is converted to power storage in described super capacitor by described solar energy power generating plate, described super capacitor is directly the DC bus powered of described elevator controlling frequency converter by two-way DC/DC converter.
2. Solar-energy elevator control system according to claim 1, it is characterized in that: described solar control chip comprises core CPU module, core CPU module comprises the first single-chip microcomputer and peripheral circuit, the output port of one group of IO of the first single-chip microcomputer connects the input of PWM driving chip, the output of described PWM driving chip connects the control end of IGBT insulated gate bipolar transistor, for controlling the break-make of described IGBT insulated gate bipolar transistor, described IGBT insulated gate bipolar transistor connects the input of described solar energy power generating plate and described voltage management module.
3. Solar-energy elevator control system according to claim 2, it is characterized in that: the output of solar energy power generating plate connects the input of the peripheral circuit of described control module, the output of the peripheral circuit of described control module connects the input of described two-way DC/DC converter, and the output of described two-way DC/DC converter connects the input of the DC bus of described elevator controlling frequency converter.
4. Solar-energy elevator control system according to claim 3, it is characterized in that: described control module is also provided with voltage acquisition module, for gathering described super-capacitor voltage to judge whether to open mains-supplied, when voltage is lower than predetermined voltage, described control module opens mains-supplied.
5. Solar-energy elevator control system according to claim 1, it is characterized in that: described control module comprises man machine operation interface, display panel, standby electricity source plate, Master control chip and ancillary equipment, described Master control chip draws electric machine controller parameter for gathering described man machine operation interface parameter, display panel parameter, ancillary equipment parameter, elevator controlling converter parameter and dragging.
6. Solar-energy elevator control system according to claim 1, is characterized in that: described in drag draw electric machine controller connected by CAN described in drag and draw motor.
7. Solar-energy elevator control system according to claim 1, is characterized in that: when super-capacitor voltage is lower than predetermined voltage, described control module by standby electricity source plate described in Control for described elevator controlling frequency converter provides power supply.
8. Solar-energy elevator control system according to claim 1, is characterized in that: described elevator controlling frequency converter by described two-way DC/DC converter by the power storage that produces in running process of elevator in described super capacitor.
9. Solar-energy elevator control system according to claim 8, is characterized in that: described Master control chip is connected with the communication of described two-way DC/DC converter by CAN.
10. the method that the Solar-energy elevator control system according to the arbitrary claim of claim 1-9 controls elevator, it comprises the following steps:
1. solar energy power generating plate gathers solar energy to elevator controlling inverter supply, the input of the peripheral circuit of the output link control module of solar energy power generating plate, the output of the peripheral circuit of control module connects the input of two-way DC/DC converter, the output of two-way DC/DC converter connects the input of the DC bus of elevator controlling frequency converter, completes the direct power supply to elevator controlling frequency converter;
2. elevator controlling frequency converter by two-way DC/DC converter by the power storage that produces in running process of elevator in super capacitor;
3. unnecessary solar energy is stored in super capacitor by solar energy power generating plate, and when needed, super capacitor is powered to elevator controlling frequency converter by two-way DC/DC converter;
4. voltage acquisition module gathers the real-time voltage of super capacitor, when super-capacitor voltage is lower than predetermined voltage, described control module by Control standby electricity source plate for elevator controlling frequency converter provides power supply;
5. Master control chip draws electric machine controller parameter for gathering man machine operation interface parameter, display panel parameter, ancillary equipment parameter and elevator controlling converter parameter and dragging, and monitors the operation of elevator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510281966.1A CN104836308A (en) | 2015-05-28 | 2015-05-28 | Solar energy elevator control system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510281966.1A CN104836308A (en) | 2015-05-28 | 2015-05-28 | Solar energy elevator control system and method |
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| CN104836308A true CN104836308A (en) | 2015-08-12 |
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| CN201510281966.1A Pending CN104836308A (en) | 2015-05-28 | 2015-05-28 | Solar energy elevator control system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105692368A (en) * | 2016-04-08 | 2016-06-22 | 天津天为电梯有限公司 | Scenery energy-saved elevator control device |
| CN107591864A (en) * | 2017-10-10 | 2018-01-16 | 成都凹克新能源科技有限公司 | A kind of elevator energy recovery system based on intelligent super capacitor module |
| CN112737076A (en) * | 2020-12-24 | 2021-04-30 | 沈阳工程学院 | Fuzzy control method based on bidirectional DC-DC converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105692368A (en) * | 2016-04-08 | 2016-06-22 | 天津天为电梯有限公司 | Scenery energy-saved elevator control device |
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| CN107591864A (en) * | 2017-10-10 | 2018-01-16 | 成都凹克新能源科技有限公司 | A kind of elevator energy recovery system based on intelligent super capacitor module |
| CN112737076A (en) * | 2020-12-24 | 2021-04-30 | 沈阳工程学院 | Fuzzy control method based on bidirectional DC-DC converter |
| CN112737076B (en) * | 2020-12-24 | 2024-04-09 | 沈阳工程学院 | Fuzzy control method based on bidirectional DC-DC converter |
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Application publication date: 20150812 |