CN202059184U - Elevator electric energy feedback device - Google Patents
Elevator electric energy feedback device Download PDFInfo
- Publication number
- CN202059184U CN202059184U CN2011201108138U CN201120110813U CN202059184U CN 202059184 U CN202059184 U CN 202059184U CN 2011201108138 U CN2011201108138 U CN 2011201108138U CN 201120110813 U CN201120110813 U CN 201120110813U CN 202059184 U CN202059184 U CN 202059184U
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- electric energy
- energy feedback
- feedback device
- elevator
- frequency converter
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Abstract
The utility model relates to an elevator electric energy feedback device which includes an energy feedback braking unit, a power supply contactor, a frequency converter unit, and a motor. The energy feedback braking unit is connected with the power supply contactor and the frequency converter unit respectively, wherein one end of the frequency converter unit is provided with an operation contactor, and the frequency converter unit is connected with the motor. The beneficial effects of the elevator electric energy feedback device are that the elevator electric energy feedback device can effectively send back the electric energy stored in a capacitance to an alternating current electrical network for peripheral electric equipments use, so the energy saving effect is obvious; the elevator electric energy feedback device dose not use any resistor heating unit, so the temperature of a machine room is decreased, and consequently the power consumption of an air-conditioner in the machine room is saved; the elevator electric energy feedback device is of great advantage to in deed realize the four-quadrant operation of a frequency conversion speed regulation system, the energy generated from the braking is recycled, so the system efficiency is greatly raised; the elevator electric energy feedback device can lower the caloric power of the system, raises the security, and reduces the maintenance workload; and the elevator electric energy feedback device improves the braking effect, and is adaptable to the engineering demands of rapid braking and frequent braking.
Description
Technical field
The utility model relates to a kind of energy-saving device of elevator, relates in particular to a kind of elevator electric energy feedback apparatus.
Background technology
At present, energy-saving and emission-reduction have risen to national strategic aim, and building industry is as one of key industry of china natural resources energy consumption, and in modern architecture, air-conditioning and elevator are the electricity-eating tigers of two maximums.Most frequency control elevators all adopt the resistance energy-consumption braking, elevator electric energy feedback apparatus is converted into three-phase alternating current 380V electric energy and sends back to partial electric grid transformed and be stored in the electric energy that fallen by resistance consumption in the frequency converter electric capacity in the running process of elevator by potential energy.In addition, because the elevator heat that produces by resistance in service is very high, the resistance local temperature is all more than 100 ℃, and for avoiding elevator faults under the hot environment, machine room must install one or more large power air-conditioned or blower fan additional; If adopt some elevator electric energy feedback apparatus, equal a part of cooling system investment is shifted, realize once investment, long-term purpose of being benefited; In addition, in feedback electric energy, eliminated the cooling system power consumption indirectly, guaranteed elevator operate as normal under normal temperature environment, improved urban heat land effect, can reach the double goal of energy-saving and emission-reduction, therefore need product have been improved towards this direction.
The utility model content
At above defective, the utility model provides a kind of electricity that elevator can be in to send out the electric energy feedback regeneration of state, can guarantee the normal running environment of elevator, help realizing the elevator electric energy feedback apparatus of the double goal of energy-saving and emission-reduction, to solve many deficiencies of prior art.
For achieving the above object, the utility model is by the following technical solutions:
A kind of elevator electric energy feedback apparatus, comprise energy feeding braking unit, power contactor, frequency converter unit and motor, described energy feeding braking unit connects power contactor and frequency converter unit respectively, frequency converter unit one end wherein is provided with the operation contactor, and described frequency converter unit is connected with motor.
Compared with prior art, the beneficial effect of elevator electric energy feedback apparatus described in the utility model is:
(1) can effectively the electric energy loopback that stores in the electric capacity be used for other power consumption equipment of periphery to AC network, power savings is fairly obvious, and general power saving rate can reach 15%-40%;
(2) owing to the non-resistance heater element, computer room temperature descends, and can save the power consumption of air conditioner in machine room, in many occasions, saves air-conditioning power consumption and often brings bigger power savings;
(3) help really realizing the four quadrant running of frequency conversion speed-adjusting system, the energy that braking produces obtains recycling, and the efficient of system improves greatly;
(4) system's caloric value reduction, fail safe raising, maintenance workload are reduced;
(5) perfect braking effect adapts to the engineering demand of fast braking and frequent braking.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structural representation of the described elevator electric energy feedback apparatus of the utility model embodiment.
Among the figure:
1, energy feeding braking unit; 2, power supply and switch sections; 3, power contactor; 4, frequency converter unit; 5, operation contactor; 6, motor.
Embodiment
As shown in Figure 1, the described elevator electric energy feedback apparatus of the utility model embodiment, comprise energy feeding braking unit 1, power contactor 3, frequency converter unit 4 and motor 6, described energy feeding braking unit 1 connects power contactor 3 and frequency converter unit 4 respectively, power contactor 3 one ends wherein are provided with power supply and switch sections 2, frequency converter unit 4 one ends wherein are provided with operation contactor 5, and described frequency converter unit 4 is connected with motor 6.During work, the electric energy that motor 6 is sent will be stored in the frequency converter unit 4 dc bus filter capacitors, if this part power consumption is not fallen, DC bus-bar voltage will raise rapidly so, influence the operate as normal of frequency converter, this product can feed back to electrical network with this part energy, reaches green, environmental protection, energy-conservation purpose; Described energy feeding braking unit 1 is by detecting the DC bus-bar voltage of frequency converter automatically, the direct voltage of the DC link of frequency converter is reverse into and line voltage with the alternating voltage of homophase frequently, after multiple noise filtering link, be connected to AC network, thereby reach the purpose of energy feedback grid, the electric energy that feeds back to electrical network reaches more than 99% of electric energy feedback, effectively saves electric energy.In addition, can adopt the PWM pulse modulation technology, the accurate and effective inhibition high order harmonic component of output phase; Can adopt the DSP central processing unit, characteristics such as have speed height, precision height, stability is good, antijamming capability is strong; Adopt self-diagnosis technology to guarantee that output voltage is accurate, prevent the electric current loopback, frequency converter is not affected.
The described elevator electric energy feedback apparatus of above the utility model embodiment, after reaching highest running speed, the elevator startup operation of employing frequency control has maximum mechanical kinetic energy, elevator will progressively slow down till the elevator stop motion before arriving destination layer, and this process is the process that the elevator traction machine discharges mechanical kinetic energy; Elevator still is a potential energy load, in order evenly to drag load, the load that elevator traction machine drags is made up of passenger car and counterbalancing piece, have only when the car loading capacity is about 50% (1 ton of passenger elevator passenger is about 7 people), the just mutual balance of car and counterbalancing piece, otherwise car and counterbalancing piece just have of poor quality, produce mechanical potential (the elevator heavy duty is descending and underloading is up) when making the elevator operation.Elevator unnecessary mechanical energy in service (containing potential energy and kinetic energy), become direct current energy to be stored in the electric capacity in the frequency converter DC loop with inverter converts by traction machine, this moment, electric capacity was like being a little reservoir, the electric energy that is transmitted back in the electric capacity is many more, capacitance voltage just high more (caing be compared to the reservoir level superelevation), the electric energy as untimely releasing capacitor stores will produce the overvoltage fault, cause frequency converter to quit work, elevator can't normally move.Present most frequency control elevators all adopt the method for store electrical energy in the resistance consumption electric capacity to prevent the electric capacity overvoltage, but the efficient of resistance power consumption not only reduction system, and a large amount of heats that resistance produces have also worsened the environment of elevator control cabinet periphery.
Above embodiment is more preferably embodiment a kind of of the utility model, and the common variation that those skilled in the art carry out in the technical program scope and replacing should be included in the protection range of the present utility model.
Claims (1)
1. elevator electric energy feedback apparatus, comprise energy feeding braking unit, power contactor, frequency converter unit and motor, it is characterized in that: described energy feeding braking unit connects power contactor and frequency converter unit respectively, frequency converter unit one end wherein is provided with the operation contactor, and described frequency converter unit is connected with motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201108138U CN202059184U (en) | 2011-04-15 | 2011-04-15 | Elevator electric energy feedback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201108138U CN202059184U (en) | 2011-04-15 | 2011-04-15 | Elevator electric energy feedback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059184U true CN202059184U (en) | 2011-11-30 |
Family
ID=45019148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201108138U Expired - Fee Related CN202059184U (en) | 2011-04-15 | 2011-04-15 | Elevator electric energy feedback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059184U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326342A (en) * | 2014-10-16 | 2015-02-04 | 广西正源电机有限公司 | Elevator control device with feedback function |
| CN104617747A (en) * | 2015-01-27 | 2015-05-13 | 爱恒能源科技（上海）有限公司 | Variable speed rotary shaft rear-end electric power recovery method and application thereof |
| CN113003359A (en) * | 2021-03-09 | 2021-06-22 | 江苏师范大学 | Energy feedback method and system for elevator |
-
2011
- 2011-04-15 CN CN2011201108138U patent/CN202059184U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326342A (en) * | 2014-10-16 | 2015-02-04 | 广西正源电机有限公司 | Elevator control device with feedback function |
| CN104617747A (en) * | 2015-01-27 | 2015-05-13 | 爱恒能源科技（上海）有限公司 | Variable speed rotary shaft rear-end electric power recovery method and application thereof |
| CN113003359A (en) * | 2021-03-09 | 2021-06-22 | 江苏师范大学 | Energy feedback method and system for elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUNAN ESEFUJI ELEVATOR CO., LTD. Free format text: FORMER NAME: CHANGSHA LIAOFU ELEVATOR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 410005 Hunan province Changsha Kaifu District, Cai-E Road No. 389 building 707 room 2 elegance Garden Patentee after: Hunan Esefuji Elevator Co., Ltd. Address before: 410005 Hunan province Changsha Kaifu District, Cai-E Road No. 389 building 707 room 2 elegance Garden Patentee before: Changsha Liaofu Elevator Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 410000 Hunan province Changsha Kaifu District, Cai-E Road No. 389 building 707 room 2 elegance Garden Patentee after: HUNAN AOSHA FUSHI ELEVATOR CO., LTD. Address before: 410005 Hunan province Changsha Kaifu District, Cai-E Road No. 389 building 707 room 2 elegance Garden Patentee before: Hunan Esefuji Elevator Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20180415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |