CN104973472A - Energy saving device and method for dispatching of regenerated electric energy of clustering elevators through direct-current micro-grid - Google Patents
Energy saving device and method for dispatching of regenerated electric energy of clustering elevators through direct-current micro-grid Download PDFInfo
- Publication number
- CN104973472A CN104973472A CN201510345704.7A CN201510345704A CN104973472A CN 104973472 A CN104973472 A CN 104973472A CN 201510345704 A CN201510345704 A CN 201510345704A CN 104973472 A CN104973472 A CN 104973472A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- direct
- elevator
- current grid
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention provides an energy-saving device and method for dispatching of regenerated electric energy of clustering elevators through a direct-current micro-grid. In terms of the clustering elevators/elevator groups, including two or more elevators, of a large building, when the conventional elevators are dispatched, only dispatching of elevator cars is conducted to meet the usage requirements of users for the elevators. According to the invention, the intelligent building direct-current micro-grid is established, the regenerated electric energy of the elevators is dispatched to the elevators which serve as the load, and therefore the regenerated electric energy of the elevators is directly utilized, surplus electric energy is fed back to a power grid through an electric energy feedback device, and the problem that the utilization efficiency of the electric energy is low due to the fact that the regenerated electric energy of the elevators is completely fed back to the grid, or the system cost is high due to the fact that the regenerated electric energy is completely stored is solved. Energy saving of the elevators is achieved through dispatching of the regenerated electric energy of the clustering elevators, and then the effect of energy saving of the intelligent building is achieved.
Description
Technical field
The present invention relates to a kind of energy-saving device of elevator and method, particularly relate to energy saver and the method for the utilization of cluster elevator/elevator group regenerative electric energy.
Background technology
In existing building power distribution system, when consideration elevator, only elevator is used as load, for taking into full account because the machine operation of lift facility is when the different conditions, reality also can show as power supply, and the energy of this part is very sufficient.Due to electrical network restriction, the reasons such as technical design defect, this energy only slatterns by usual engineering.
The energy-saving scheme of elevator achieves progress from different perspectives.The four quadrant running of elevator, as shown in Figure 1.Upwards run containing 3 mode of operations: electronic, generating is slowed down and forward regenerative braking.Downward operation is also containing 3 mode of operations: electronic, generating is slowed down and forward regenerative braking.
(1) forward runs motoring condition feature: be operated in first quartile, as A point.Rotating speed is consistent with reference to positive dirction with torque.Energy is transmitted to electrical motor from electrical network, and electrical motor makes positive work.
(2) forward deceleration dynamic brake status flag: be operated in the second quadrant, as B point.Rotating speed is consistent with reference to positive dirction, and electromagnetic torque may be negative (generating).
(3) forward runs feedback generating state feature: be operated in the second quadrant, as B point.Rotating speed is consistent with reference to positive dirction, and electromagnetic torque perseverance is negative, is stable electric generation state.Three, four-quadrant and, two quadrant are similar.During four quadrants of elevator run, two, four-quadrant respectively has a stable state generating state.
And from the cycle of run of elevator, heavy duty is descending, and in underloading, provisional capital is generating state; Remaining underloading is descending and heavy duty is up, is only power consumption state.
The inverter main circuit of alternative-frequency speed-regulation elevator as shown in Figure 2.This inverter is made up of three phase full bridge rectification, capacitor filtering and inversion three part.When elevator is in generating state, the three plase alternating current sent is charged to electric capacity C by the backward diode bridge rectifier in inverter.Elevator detects voltage
u c opening switch pipe V during rising
0, make electric current by resistance R
0, switching valve V
0flow to negative pole.In this process, electric energy is at resistance R
0on can consume, otherwise electric capacity C will by pump boosting puncture.
At present, process the method for elevator regenerated electric energy, one is brake unit or braking resistor heating, is slatterned by this part energy ezpenditure on resistance; Two is regenerative electric energy feedback electrical networks, and the mechanical energy that elevator device stores is converted into the AC energy feedback grid meeting the grid-connected requirement of electrical network, again for other consumers; Three is stored by regenerative electric energy, again utilizes for elevator or other equipment.
(1) brake unit or braking resistor heating
The elevator of current more than 98% adopts the mode of regeneration resistance heating to consume the direct current energy stored in electric capacity.Hang on DC bus loop outside regeneration resistance, when the voltage in DC bus loop exceedes the value preset, resistance access DC bus loop will be regenerated, the direct current energy stored in electric capacity is consumed, until the voltage in DC bus loop is lower than preset value by the mode of regeneration resistance heating.Which itself causes energy dissipation, also makes computer room temperature raise, and machine room also needs to install heat abstractor, causes energy source secondary waste.
(2) regenerative electric energy feedback electrical network
The direct current energy stored in electric capacity C is changed into alternating current feedback grid by elevator electric energy feedback, has obvious power savings.Meanwhile, due to non-resistance heat element, computer room temperature declines, and can save the consumption of current of air conditioner in machine room and cooling system.Elevator regenerated electric energy, as a kind of distributed energy, has randomness and intermittent feature, can cause impact to a certain degree to the power supply quality of electrical network; And elevator regenerated electric energy also in architectural electric online operation, may change the feature of the unidirectional trend of traditional architecture switching arrangement; In addition, patent 201420286869.2 is in parallel by multiple elevator DC bus, shares/shares an electric energy feedback apparatus, decrease construction volume and reduce cost.Totally see, electric energy feedback electrical network class technical scheme, though technology is ripe, to apply and few.
(3) regenerative electric energy energy storage and general DC busbar method
By elevator regenerated power storage, then directly again utilize (as patent 201010251559.9) for elevator or other DC equipment, the method is regenerative electric energy feedback electrical network method comparatively, and can avoid inversion link, utilization ratio is higher, and technical advantage is obvious; But the method, elevator regenerated electric energy all to be stored, its charging and discharging currents is large, speed, traditional storage battery is difficult to as closed-center system, need super capacitor etc. can the closed-center system (as patent 201020607246.2) of fast charging and discharging, and super capacitor be with high costs.Visible, though the method has technical advantage, cost is higher, user is difficult to accept, and market rarely has such products application.
In addition, patent 200910071820.9 discloses a kind of elevator group energy saver, and it utilizes DC bus that multi-section elevator is shared an energy storage component, reduces the cost of closed-center system; Patent 200420110175.X and patent 201420219696.2 disclose the energy saver of multiple elevator general DC busbar, do not arrange closed-center system, more reduce cost.Visible, such technology is one of development tendency of elevator energy-saving technology.
Summary of the invention
Technical matters to be solved by this invention is the defect overcoming prior art, the elevator regenerated electric energy direct-current grid scheduling energy saver of a kind of cluster and method are provided, realize cluster elevator (2/portion and 2/portion more than) energy-conservation, expansion intelligent building DC micro power grid system, the DC load such as flexible access battery-driven car charging.
1, cluster elevator energy-saving is realized.
In China's building, elevator is widely applied, account for about 80% of global elevator selling market, and elevator power consumption accounts for about 10-15% in large-scale (Super High) building, utilize direct-current grid to dispatch elevator regenerated electric energy, low cost elevator energy saving of system can be realized.
2, intelligent building DC micro power grid system is expanded.
Intelligent building direct-current grid in current research, from power supply, is only also consider distributed power generation, as building photovoltaic BIPV etc.; From load, household electrical appliances need to transform as direct current, and electric vehicle DC charging is development tendency.And elevator is as special device, it is load and power supply, and power supply and duty ratio comparatively balance/mate, therefore can direct construction direct-current micro-grid, can be used as the subnet of intelligent building DC micro power grid system.
3, the DC load such as flexible access battery-driven car charging.
Charging pile for electric vehicle is incorporated direct-current grid, and fully by Energy extraction and storage flexibility, and in DC micro-electric network process, the direct storage of DC energy, decreases the switching process of rectification, improves utilization ratio.
For solving the problems of the technologies described above, this invention takes following technical scheme:
A kind of cluster elevator regenerated electric energy direct-current grid scheduling energy saver, it is characterized in that, positive and negative for the voltage of the frequency converter intermediate DC link of the multi-section elevator in intelligent building two ends are in parallel respectively, and build a direct-current grid, direct-current grid is connected with electrical network by electric energy feedback module;
The regenerative electric energy produced by elevator in intelligent building is dispatched to the elevator of electricity consumption by direct-current grid, as the power supply that its motor runs, unnecessary electric energy is by electric energy feedback module feedback grid.
Described elevator is alternative-frequency speed-regulation elevator.
The motor driving described elevator to run comprises asynchronous dynamo and permagnetic synchronous motor.
Described direct-current grid is the direct-current grid of grid type, and direct-current grid obtains electric energy from the elevator as power supply, is dispatched to the elevator as load by direct-current grid, and by unnecessary electric energy feedback electrical network.
Described direct-current grid adopts Hysteresis control mode to control the start and stop of described electric energy feedback module according to change of voltage.
The voltage span of described electric energy feedback module start and stop is within the voltage range of described direct-current grid.
The load that described direct-current grid connects also comprises the DC load in access intelligent building; The power supply that described direct-current grid connects also comprises building integrated photovoltaic power generating system and/or fuel cell power generation distributed power generation power supply.
A kind of cluster elevator regenerated electric energy direct-current grid scheduling power-economizing method, it is characterized in that, positive and negative for the voltage of the frequency converter intermediate DC link of the multi-section elevator in intelligent building two ends are in parallel respectively, and build a direct-current grid, direct-current grid is connected with electrical network by electric energy feedback module;
The regenerative electric energy produced by elevator in intelligent building is dispatched to the elevator of electricity consumption by direct-current grid, as the power supply that its motor runs, unnecessary electric energy is by electric energy feedback module feedback grid.
Described direct-current grid is the direct-current grid of grid type, and described direct-current grid obtains electric energy from the elevator as power supply, and adopts Hysteresis control mode to control the work of described electric energy feedback module, by unnecessary electric energy feedback electrical network according to change of voltage.
The beneficial effect that the present invention reaches:
1, not doing on the basis of any change to existing elevator device, not affecting under elevator safety prerequisite, elevator energy-saving is realized.Utilize the intelligent building direct-current micro-grid built, elevator regenerated electric energy can be realized transmit to electricity consumption elevator, thus realize the scheduling of cluster elevator electric energy, elevator regenerated electric energy locally can be utilized, unnecessary electric energy feedback electrical network, greatly reduce the electricity of feedback grid, improve elevator device energy utilization efficiency, achieve elevator energy-efficient.
2, by elevator is introduced intelligent building direct current micro-grid system, building direct current micro-grid system can be allowed to have more energy source, be conducive to applying of intelligent building direct current micro-grid system, and the direct current of elevator regenerated electric energy directly utilizes, itself improves the utilization ratio of direct current energy.
Accompanying drawing explanation
The four quadrant running of Fig. 1 elevator.
Fig. 2 elevator inverter main circuit.
The elevator regenerated electric energy dispatching system of Fig. 3 cluster forms schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
It is energy-conservation that this invention utilizes DC micro-electric network technology to realize cluster elevator/elevator group, carries out the scheduling of elevator regenerated electric energy realize cluster elevator energy-saving by structure direct-current grid.Elevator variable frequency speed-adjusting and control system is as shown in Figure 3 formed, the positive and negative two ends of voltage of n portion elevator frequency converter intermediate DC link are together in parallel respectively, build a direct-current grid, and be connected with electrical network by electric energy feedback module, so elevator is as the distributed power source of in intelligent building, become the power supply of direct-current grid, be again a DC load of direct-current grid simultaneously.
This project cluster elevator utilizes direct-current grid to realize the power-economizing method of regenerative electric energy scheduling, with patent 200910071820.9, multi-section elevator is shared compared with a closed-center system, or compared with patent 200420110175.X and 201420219696.2 multiple elevator general DC busbars, all have essence different.
If running process of elevator ignores friction drag and resistance, passenger takes a lift the complete two-way process of the upper next one, ideally goes up and does not consume electric energy, only exist and exchange with the electric energy of this direct-current grid.Now, the direct-current grid constructed by utilization, is dispatched to the elevator as load using elevator regenerated electric energy, achieves the scheduling of energy between different elevator, thus directly utilizes elevator regenerated electric energy, and unnecessary electric energy is by electric energy feedback module feedback grid.In addition, other distributed energy resource system also can will applied in intelligent building, as building photovoltaic BIPV, includes this direct-current grid in as power supply, and unified grid-connected.
1, System's composition
Do not doing existing elevator device on the basis of any change, do not affecting under elevator safety prerequisite, system is introduced a direct-current grid and is carried out energy scheduling, mainly comprises: direct-current grid and electric energy feedback module.
2, electric energy feedback module on off control
The start and stop of electric energy feedback module can carry out Hysteresis control according to direct-current grid change of voltage situation, and feedback initial voltage, stagnant loop voltag can be arranged, and such as, feedback initial voltage 600V, stagnant loop voltag 30V, stop back voltage 570V.Electric energy feedback module start and stop voltage arranges span within the voltage range of this direct-current grid, lower voltage limit is the voltage (as DC540V) after three phase mains rectifying and wave-filtering, and upper voltage limit is the voltage (being generally DC700V-DC800V) of elevator bleeder resistance access.
3, the voltage control of direct-current grid
Direct-current grid voltage determines primarily of elevator frequency converter DC tache voltage, also affects by factors such as the energy storage of filter capacitor C and the setting cut-in voltages of elevator bleeder resistance R; In the present embodiment, direct-current grid voltage also depends on electric energy feedback module on off control.The concrete change procedure of voltage: the rectification that the energy of elevator direct-current link mainly comes from electrical network obtains DC energy, and then DC energy is carried out inversion, the elevator motor be supplied to as load uses.After introducing direct-current grid, when load motor is in generating state, because the rectifying device be connected with electrical network is diode, electric energy can not flow to electrical network, the voltage of filter capacitor C raises along with the increase of energy, at this moment just control electric energy feedback module by electric energy feedback electrical network, then voltage can be reduced to normal value; When motor returns to again loading condition, now energy is by DC link steer motor, then filter capacitor C voltage declines, and at this moment just needs energy supplement, can continue to derive from electrical network rectification.
The present invention is by structure one intelligent building direct-current grid, elevator regenerated electric energy is dispatched to the elevator as load, thus elevator regenerated electric energy is directly utilized, unnecessary electric energy by an electric energy feedback apparatus feedback grid, avoids the problem that the not high or whole storage of elevator regenerated electric energy whole feedback grid efficiency causes system cost high.By the scheduling to the elevator regenerated electric energy of group, realize elevator energy-saving, and then reach the effect of intelligent building conservation.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (9)
1. a cluster elevator regenerated electric energy direct-current grid scheduling energy saver, it is characterized in that, positive and negative for the voltage of the frequency converter intermediate DC link of the multi-section elevator in intelligent building two ends are in parallel respectively, and build a direct-current grid, direct-current grid is connected with electrical network by electric energy feedback module;
The regenerative electric energy produced by elevator in intelligent building is dispatched to the elevator of electricity consumption by direct-current grid, as the power supply that its motor runs, unnecessary electric energy is by electric energy feedback module feedback grid.
2. a kind of cluster according to claim 1 elevator regenerated electric energy direct-current grid scheduling energy saver, it is characterized in that, described elevator is alternative-frequency speed-regulation elevator.
3. a kind of cluster according to claim 1 and 2 elevator regenerated electric energy direct-current grid scheduling energy saver, it is characterized in that, the motor driving described elevator to run comprises asynchronous dynamo and permagnetic synchronous motor.
4. a kind of cluster according to claim 1 elevator regenerated electric energy direct-current grid scheduling energy saver, it is characterized in that, described direct-current grid is the direct-current grid of grid type, direct-current grid obtains electric energy from the elevator as power supply, the elevator as load is dispatched to by direct-current grid, and by unnecessary electric energy feedback electrical network.
5. a kind of cluster according to claim 1 elevator regenerated electric energy direct-current grid scheduling energy saver, is characterized in that, described direct-current grid adopts Hysteresis control mode to control the start and stop of described electric energy feedback module according to change of voltage.
6. a kind of cluster according to claim 5 elevator regenerated electric energy direct-current grid scheduling energy saver, it is characterized in that, the voltage span of described electric energy feedback module start and stop is within the voltage range of described direct-current grid.
7. a kind of cluster according to claim 1 elevator regenerated electric energy direct-current grid scheduling energy saver, is characterized in that, the load that described direct-current grid connects also comprises the DC load in access intelligent building; The power supply that described direct-current grid connects also comprises building integrated photovoltaic power generating system and/or fuel cell power generation distributed power generation power supply.
8. a cluster elevator regenerated electric energy direct-current grid scheduling power-economizing method, it is characterized in that, positive and negative for the voltage of the frequency converter intermediate DC link of the multi-section elevator in intelligent building two ends are in parallel respectively, and build a direct-current grid, direct-current grid is connected with electrical network by electric energy feedback module;
The regenerative electric energy produced by elevator in intelligent building is dispatched to the elevator of electricity consumption by direct-current grid, as the power supply that its motor runs, unnecessary electric energy is by electric energy feedback module feedback grid.
9. a kind of cluster according to claim 8 elevator regenerated electric energy direct-current grid scheduling power-economizing method, it is characterized in that, described direct-current grid is the direct-current grid of grid type, described direct-current grid obtains electric energy from the elevator as power supply, and adopt Hysteresis control mode to control the work of described electric energy feedback module, by unnecessary electric energy feedback electrical network according to change of voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345704.7A CN104973472A (en) | 2015-06-23 | 2015-06-23 | Energy saving device and method for dispatching of regenerated electric energy of clustering elevators through direct-current micro-grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510345704.7A CN104973472A (en) | 2015-06-23 | 2015-06-23 | Energy saving device and method for dispatching of regenerated electric energy of clustering elevators through direct-current micro-grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104973472A true CN104973472A (en) | 2015-10-14 |
Family
ID=54270522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510345704.7A Pending CN104973472A (en) | 2015-06-23 | 2015-06-23 | Energy saving device and method for dispatching of regenerated electric energy of clustering elevators through direct-current micro-grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104973472A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681729A (en) * | 2015-12-24 | 2018-02-09 | 合肥工业大学 | A kind of multiport converter for electric automobile cluster discharge and recharge |
| CN109516326A (en) * | 2017-09-18 | 2019-03-26 | 上海三菱电梯有限公司 | More elevator control systems |
| CN111585433A (en) * | 2020-05-07 | 2020-08-25 | 国网重庆市电力公司电力科学研究院 | Universal interface, control method and energy storage system |
| CN111874766A (en) * | 2019-05-03 | 2020-11-03 | 奥的斯电梯公司 | Regenerative drive |
| CN113708395A (en) * | 2021-08-19 | 2021-11-26 | 华电电力科学研究院有限公司 | Operation method of intelligent building multifunctional energy storage system |
-
2015
- 2015-06-23 CN CN201510345704.7A patent/CN104973472A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681729A (en) * | 2015-12-24 | 2018-02-09 | 合肥工业大学 | A kind of multiport converter for electric automobile cluster discharge and recharge |
| CN107681729B (en) * | 2015-12-24 | 2020-06-05 | 合肥工业大学 | Multi-port converter for electric vehicle cluster charging and discharging |
| CN109516326A (en) * | 2017-09-18 | 2019-03-26 | 上海三菱电梯有限公司 | More elevator control systems |
| CN111874766A (en) * | 2019-05-03 | 2020-11-03 | 奥的斯电梯公司 | Regenerative drive |
| EP3733578A1 (en) * | 2019-05-03 | 2020-11-04 | Otis Elevator Company | Regenerative drive |
| CN111585433A (en) * | 2020-05-07 | 2020-08-25 | 国网重庆市电力公司电力科学研究院 | Universal interface, control method and energy storage system |
| CN113708395A (en) * | 2021-08-19 | 2021-11-26 | 华电电力科学研究院有限公司 | Operation method of intelligent building multifunctional energy storage system |
| CN113708395B (en) * | 2021-08-19 | 2023-08-29 | 华电电力科学研究院有限公司 | Operation method of intelligent building multifunctional energy storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106276445A (en) | A kind of elevator drives control, energy saving integrated system and method | |
| CN104973472A (en) | Energy saving device and method for dispatching of regenerated electric energy of clustering elevators through direct-current micro-grid | |
| CN204156591U (en) | Elevator emergency energy saver | |
| CN104608649B (en) | Integrated electric energy of electric automobile transformation system | |
| CN102355140B (en) | Concatenated multilevel inverter circuit capable of realizing energy feedback and control method | |
| CN102403776A (en) | Hybrid power supply system and hybrid power supply method for air conditioner | |
| CN201956961U (en) | Energy feedback device based on power unit cascade type high voltage frequency converter | |
| CN201961911U (en) | Intelligent electricity-saving device for elevator | |
| CN109455589A (en) | Elevator device | |
| CN204144996U (en) | A kind of multiple control lift energy feedback net arrangement with super capacitor | |
| CN204873295U (en) | Cluster elevator electric energy dispatch device based on little electric wire netting of direct current | |
| CN204873300U (en) | Little power dispatching economizer of cluster elevator regeneration electric energy direct current | |
| Lianfu et al. | Research on the integrated braking energy recovery strategy based on super-capacitor energy storage | |
| CN201201829Y (en) | Energy resource feedback system for elevator | |
| CN101950978A (en) | Energy-saving emergency type elevator feedback power system | |
| CN201774275U (en) | Feedback power system of energy-saving emergency lift | |
| CN207150225U (en) | A kind of elevator energy recovery system based on high voltage platform | |
| CN202997590U (en) | Elevator energy recovery system | |
| CN203411208U (en) | Energy-storage type lifter | |
| CN115549268A (en) | Potential energy recovery system of stereoscopic warehouse automation equipment and building method thereof | |
| CN104925597A (en) | Elevator colony electric energy dispatching device and method based on direct-current microgrid | |
| CN101531299A (en) | Intelligent energy-saving device of elevator group | |
| CN104836308A (en) | Solar energy elevator control system and method | |
| CN104760507A (en) | Control system and method of integrated controller of double-source trackless trolley | |
| CN107453449A (en) | A kind of elevator energy recovery system based on high voltage platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |
|
| RJ01 | Rejection of invention patent application after publication |