CN201201829Y - Energy resource feedback system for elevator - Google Patents
Energy resource feedback system for elevator Download PDFInfo
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- CN201201829Y CN201201829Y CNU2008200577038U CN200820057703U CN201201829Y CN 201201829 Y CN201201829 Y CN 201201829Y CN U2008200577038 U CNU2008200577038 U CN U2008200577038U CN 200820057703 U CN200820057703 U CN 200820057703U CN 201201829 Y CN201201829 Y CN 201201829Y
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- 239000003990 capacitor Substances 0.000 abstract 1
- 230000020169 heat generation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The utility model discloses an energy feedback system for lifters, fit with power networks, which comprises a frequency transformer connected with a power network and a motor connected with the frequency transformer. The energy feedback system is characterized by further comprising an energy feedback device of which the input is connected with the frequency transformer and the output is connected with the power network. The energy feedback system can feed abundant electric quantity of a large capacitor back to the power network without loss, to save energy and avoid heat generation of high-power resistors, to improve the operation condition of the system and protect environment.
Description
Technical field
The utility model relates to energy saving system of elevator, relates in particular to a kind of elevator energy source feedback system.
Background technology
As everyone knows, elevator is a kind of vertical transport instrument.When lift car progressively slows down in operational process until stopping when arriving destination layer, elevator traction machine will discharge mechanical kinetic energy.In addition, lift car still is a potential energy load, because lift car and counterweight is of poor quality, lift car also has mechanical potential energy when operation.Discharge when comprising the unnecessary mechanical energy of potential energy and kinetic energy thereby in operational process, brake, will make elevator motor be in regenerative power generation state when car, thereby with excess energy " regeneration " the one-tenth electric energy of load.The electric energy of being regenerated will become direct current energy to be stored in the electric capacity of frequency converter DC link with inverter converts by the electrical motor of elevator, if stored electric energy in time can not be discharged, will et out of order, and elevator can't normally be moved.
Usually shunt resistance in the frequency converter DC link consumes circuit by the regeneration that forms thus regenerative electric energy is consumed by the form of resistance with heat energy, thereby prevents to cause because of regenerative electric energy is excessive breakdown of equipment.But, in this manner,, resistance cause the elevator(lift) machine room temperature too high thereby producing a large amount of heats, make its ecological deterioration.In addition, these energy are wasted, and are unfavorable for energy savings.
Summary of the invention
The purpose of this utility model provides a kind of elevator energy source feedback system exactly in order to address the above problem.
The purpose of this utility model is achieved in that a kind of elevator energy source feedback system that the utility model discloses, be used with electrical network, this system comprises frequency converter that links to each other with electrical network and the electrical motor that links to each other with frequency converter, it is characterized in that, this system also comprises an energy back feed device, the input end of this energy back feed device links to each other with frequency converter, and mouth links to each other with electrical network.
The input end of described energy back feed device links to each other with the electric capacity of DC link in the frequency converter.
The utility model makes it have following advantage and characteristics owing to adopted above technical scheme:
1, energy regeneration is good, opens the frequent occasion of braking at elevator, and it is more obvious to economize on electricity;
2, energy conversion rate is more than 97%, and energy-conservation 15%-40%;
3, no heat element has improved the running environment of system greatly;
4, good braking effect, lock torque 150%;
5, reliable operation, good voltage waveform, harmonic content is less, pulse free circulation.
Description of drawings
Fig. 1 is the structural representation of the utility model elevator energy source feedback system.
The specific embodiment
Referring to Fig. 1, the utility model discloses a kind of elevator energy source feedback system, be used with electrical network 4, this system comprises frequency converter 1 that links to each other with electrical network 4 and the electrical motor 2 that links to each other with frequency converter, it is characterized in that this system also comprises an energy back feed device 3, optional is the energy feedback device of ED-PEF with Shanghai Ai Dengbao Elevator Co., Ltd model, the input end of this energy back feed device 3 links to each other with frequency converter 1, and mouth links to each other with electrical network 4.
The input end of described energy back feed device links to each other with big electric capacity in the frequency converter.
The utility model can be made specific description by following examples.
The elevator starter of employing frequency converter timing has maximum mechanical kinetic energy after reaching highest running speed, and elevator will progressively slow down till the elevator stop motion before arriving destination layer, and this moderating process is the period that elevator load discharges mechanical kinetic energy.Elevator still is a potential energy load, and in order evenly to drag load, elevator load is made up of passenger car and counterbalancing piece.Have only when the car load carrying ability is about 50% (is about 7 people as 1 ton of passenger elevator passenger), car and counterbalancing piece just are in the basic state of equilibrium of both sides' quality, otherwise car and counterbalancing piece just have of poor quality, produce mechanical potential when making the elevator operation.When the parts that the elevator quality weighs were up, the mechanical potential that is absorbed the conversion of electrical network electric energy by electrical motor increased.When the parts that the elevator quality weighs were descending, mechanical potential reduced, and this process also is the period that elevator load discharges mechanical kinetic energy.Frequency converter can be transformed into the mechanical energy that discharges power storage in the big electric capacity of frequency converter DC link by electrical motor, the control theory of energy back feed device utilization active inversion, the electric energy of frequency converter DC link, be transformed into one and the synchronous AC sine wave of synchronized, electric energy is fed back to electrical network, regeneration.
The utility model elevator adopts the IGBT power model with energy source feedback system power circuit, provide the control signal of conducting of IGBT power cell and shutoff by the voltage that detects, compares DC bus-bar voltage and R, S, T, adopt the PWM pulse modulation technology, accurate and the synchronous AC sine wave of synchronized of output phase, thus make the load braking energy feed back to AC network.Adopt IGBT full-control type device can improve the efficient of system as the device for power switching of active inversion, suppress harmonic wave and mechanical noise, adopted the PWM control technology to carry out closed loop control, combine the advantage of stagnate ring mode and PWM mode, improved control accuracy, dynamic property and the obstacle overcome ability of system.Adopt the PWM pulse modulation technology, effectively suppress high order harmonic.Simultaneously this device provides AC/DC overvoltage, under-voltage, overcurrent, phase shortage, alternating current-direct current complete safety method such as molten protection soon, with the normal operation of assurance system and circuit, reduces the loss under the failure condition.
At present frequency converter is released, and the method for electric weight is to adopt brake unit and add high-power resistance in the big electric capacity, and the form with heat wastes on the high-power resistance to adding with electric quantity consumption in the big electric capacity.The utility model then can with electric weight unnecessary in the big electric capacity almost the loopback of no consumption ground give electrical network, thereby both reached purpose of saving, avoided high-power resistance power consumption heating again, improved the running environment of system greatly, environmental protection.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (2)
1. elevator energy source feedback system, be used with electrical network, this system comprises frequency converter that links to each other with electrical network and the electrical motor that links to each other with frequency converter, it is characterized in that, this system also comprises an energy back feed device, the input end of this energy back feed device links to each other with frequency converter, and mouth links to each other with electrical network.
2. elevator as claimed in claim 1 energy source feedback system is characterized in that the input end of described energy back feed device links to each other with the electric capacity of DC link in the frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200577038U CN201201829Y (en) | 2008-04-24 | 2008-04-24 | Energy resource feedback system for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200577038U CN201201829Y (en) | 2008-04-24 | 2008-04-24 | Energy resource feedback system for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201201829Y true CN201201829Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200577038U Expired - Lifetime CN201201829Y (en) | 2008-04-24 | 2008-04-24 | Energy resource feedback system for elevator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201201829Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618825B (en) * | 2009-07-29 | 2011-05-18 | 富士工业(青岛)电梯制造有限公司 | Energy-saving elevator |
| CN102437588A (en) * | 2011-10-14 | 2012-05-02 | 上海爱登堡电梯股份有限公司 | Energy feedback system |
| CN101565138B (en) * | 2009-05-18 | 2013-03-27 | 天津大学 | Discrete self-charging elevator energy feedback device |
| CN110422734A (en) * | 2019-07-25 | 2019-11-08 | 山东科技大学 | A kind of elevator downlink energy collecting system |
-
2008
- 2008-04-24 CN CNU2008200577038U patent/CN201201829Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565138B (en) * | 2009-05-18 | 2013-03-27 | 天津大学 | Discrete self-charging elevator energy feedback device |
| CN101618825B (en) * | 2009-07-29 | 2011-05-18 | 富士工业(青岛)电梯制造有限公司 | Energy-saving elevator |
| CN102437588A (en) * | 2011-10-14 | 2012-05-02 | 上海爱登堡电梯股份有限公司 | Energy feedback system |
| CN110422734A (en) * | 2019-07-25 | 2019-11-08 | 山东科技大学 | A kind of elevator downlink energy collecting system |
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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 | ||
| CP03 | Change of name, title or address |
Address after: 201114 Minhang District Pu Xing Road, No. 1601, Shanghai Patentee after: Shanghai Edunburgh Elevator Co., Ltd. Address before: 201114 No. 1601 Pu Xing Road, Shanghai Patentee before: Shanghai Edunburgh Elevator Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Energy resource feedback system for elevator Effective date of registration: 20120105 Granted publication date: 20090304 Pledgee: Pudong Development Bank of Minhang Shanghai branch Pledgor: Shanghai Edunburgh Elevator Co., Ltd. Registration number: 2012990000012 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20130711 Granted publication date: 20090304 Pledgee: Pudong Development Bank of Minhang Shanghai branch Pledgor: Shanghai Edunburgh Elevator Co., Ltd. Registration number: 2012990000012 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| ASS | Succession or assignment of patent right |
Owner name: XINJIANG XIWANG EDUNBURGH ELEVATOR CO., LTD. Effective date: 20130829 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130829 Address after: 201114 Minhang District Pu Xing Road, No. 1601, Shanghai Patentee after: Shanghai Edunburgh Elevator Co., Ltd. Patentee after: I hope Xinjiang Edunburgh Elevator Co Ltd Address before: 201114 Minhang District Pu Xing Road, No. 1601, Shanghai Patentee before: Shanghai Edunburgh Elevator Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
|
| CX01 | Expiry of patent term |