CN102437588A - Energy feedback system - Google Patents
Energy feedback system Download PDFInfo
- Publication number
- CN102437588A CN102437588A CN2011103114763A CN201110311476A CN102437588A CN 102437588 A CN102437588 A CN 102437588A CN 2011103114763 A CN2011103114763 A CN 2011103114763A CN 201110311476 A CN201110311476 A CN 201110311476A CN 102437588 A CN102437588 A CN 102437588A
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- China
- Prior art keywords
- energy feedback
- feedback system
- electric energy
- frequency converter
- energy
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- 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.)
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Escalators And Moving Walkways (AREA)
Abstract
The invention discloses an energy feedback system, which is connected with a power grid. The energy feedback system comprises an electric energy feedback device, a hoisting motor which drives an escalator and a frequency converter which is connected with the hoisting motor, wherein the hoisting motor is also connected with the power grid; and the input end of the electric energy feedback device is connected with the frequency converter, and the output end of the electric energy feedback device is connected with the power grid. By the energy feedback system, mechanical energy produced by the descending of the escalator can be converted into electric energy, and the electric energy is fed back to the power grid to fulfill the aim of saving energy sources.
Description
Technical field
The present invention relates to a kind of Energy Feedback System, relate in particular to a kind of Energy Feedback System.
Background technology
As everyone knows, escalator is the load of potential energy property.When escalator is descending, a large amount of mechanical energy will convert electric energy to through traction motor, and it is long more that load of potential energy character or inertia load are in time of braking, and it is just many more that mechanical energy converts electric energy to.At present; The electric energy of above-mentioned generation or consume in the winding resistance of traction motor, or consume on the dynamic braking resistance that adds, the former causes that traction motor seriously generates heat; The latter needs external high-power heating resistor; All consume in vain and wasted a large amount of electric energy, cause the waste of the energy, and surrounding environment is also caused certain pollution.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of Energy Feedback System is provided, the mechanical energy that produces when can be escalator descending converts electric energy into, and feeds back to electrical network, reaches the purpose of energy savings.
The technical scheme that realizes above-mentioned purpose is:
A kind of Energy Feedback System connects electrical network, and said Energy Feedback System comprises an electric energy feedback device, drive that dragging of escalator drawn motor and drag with this and draw the frequency converter that motor is connected, wherein:
Said dragging drawn motor and also connected said electrical network;
The input of said electric energy feedback device connects said frequency converter, and its output connects said electrical network.
Above-mentioned Energy Feedback System, wherein, said Energy Feedback System also comprises an electric capacity, this electric capacity is connected between the input and said frequency converter of said electric energy feedback device.
Above-mentioned Energy Feedback System, wherein, said Energy Feedback System also comprises a brake unit and a brake resistance, connect with the brake resistance series arm that forms of said brake unit is connected in parallel on the two ends of said electric capacity.
The invention has the beneficial effects as follows: the mechanical energy that produces when the present invention is can be escalator descending converts electric energy into, and feeds back to electrical network, and feedback efficient can be up to 97%, and heat waste is little, has practiced thrift the energy in a large number; Simultaneously, the higher harmonic current of generation of the present invention is less, and is less to the pollution of electrical network, has the laudatory title of environmental protection, and is easy to realize that cost is low.
Description of drawings
Fig. 1 is the structural representation of Energy Feedback System of the present invention.
Embodiment
To combine accompanying drawing that the present invention is described further below.
See also Fig. 1, Energy Feedback System of the present invention comprises electric energy feedback device 3, drives dragging of escalator 4 and draw motor 1 and draw the frequency converter 2 that motor 1 is connected with dragging, wherein:
Drag and draw motor 1 and also connect electrical network 5, the electric energy that utilizes electrical network 5 to provide drives escalator 4 motions; When escalator 4 is descending, under the portative effect on the throne, drags and draw motor 1 and convert a large amount of mechanical energy into alternating current, and this alternating current is transferred to frequency converter 2;
The input of electric energy feedback device 3 connects frequency converter 2, and output connects electrical network 5; The control theory of electric energy feedback device 3 utilization active inversions, the direct current that frequency converter 2 is changed is transformed into one and electrical network 5 synchronous synchronous AC sine waves, thereby feeds back to electrical network 5 to electric energy; In the present embodiment, it is the electric energy feedback device of ED-PEF that electric energy feedback device 3 is selected Shanghai Aidengbao Lift Co.,Ltd's model for use.
In the present embodiment, said Energy Feedback System also comprises electric capacity 6, brake unit 7 and brake resistance 8, wherein:
The series arm that forms after brake unit 7 is connected with brake resistance 8 is connected in parallel on the two ends of electric capacity 6; The electric energy that feeds back to electrical network 5 when electric energy feedback device 3 is less than dragging the electric flux that draws motor 1 and frequency converter 2 conversions; And when electric capacity 6 is full of; Brake unit 7 makes brake resistance 8 conductings, thereby consumes unnecessary electric energy.
In sum; The mechanical energy that the present invention produces escalator when descending is converted into electric energy; And almost no consumption ground feeds back to electrical network, thereby reaches the purpose of economize on electricity, the environment around having improved greatly again; Avoided under the current state with the power consumption that produces to adding on the high-power resistance phenomenon that wastes with the form of heat.
Above embodiment only supplies to explain the present invention's usefulness; But not limitation of the present invention; The technical staff in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (3)
1. Energy Feedback System connects electrical network, it is characterized in that, said Energy Feedback System comprises an electric energy feedback device, drive that dragging of escalator drawn motor and drag with this and draw the frequency converter that motor is connected, wherein:
Said dragging drawn motor and also connected said electrical network;
The input of said electric energy feedback device connects said frequency converter, and its output connects said electrical network.
2. Energy Feedback System according to claim 1 is characterized in that said Energy Feedback System also comprises an electric capacity, and this electric capacity is connected between the input and said frequency converter of said electric energy feedback device.
3. Energy Feedback System according to claim 2 is characterized in that, said Energy Feedback System also comprises a brake unit and a brake resistance, and connect with the brake resistance series arm that forms of said brake unit is connected in parallel on the two ends of said electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103114763A CN102437588A (en) | 2011-10-14 | 2011-10-14 | Energy feedback system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103114763A CN102437588A (en) | 2011-10-14 | 2011-10-14 | Energy feedback system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102437588A true CN102437588A (en) | 2012-05-02 |
Family
ID=45985507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103114763A Pending CN102437588A (en) | 2011-10-14 | 2011-10-14 | Energy feedback system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102437588A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201201829Y (en) * | 2008-04-24 | 2009-03-04 | 上海爱登堡电梯有限公司 | Energy resource feedback system for elevator |
| CN201674235U (en) * | 2010-05-07 | 2010-12-15 | 中电科技电子信息系统有限公司 | Energy feedback elevator system |
| CN201942373U (en) * | 2011-01-20 | 2011-08-24 | 浙江威特电梯有限公司 | Energy-saving elevator |
| CN202346563U (en) * | 2011-10-14 | 2012-07-25 | 上海爱登堡电梯股份有限公司 | Energy feedback system for escalator |
-
2011
- 2011-10-14 CN CN2011103114763A patent/CN102437588A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201201829Y (en) * | 2008-04-24 | 2009-03-04 | 上海爱登堡电梯有限公司 | Energy resource feedback system for elevator |
| CN201674235U (en) * | 2010-05-07 | 2010-12-15 | 中电科技电子信息系统有限公司 | Energy feedback elevator system |
| CN201942373U (en) * | 2011-01-20 | 2011-08-24 | 浙江威特电梯有限公司 | Energy-saving elevator |
| CN202346563U (en) * | 2011-10-14 | 2012-07-25 | 上海爱登堡电梯股份有限公司 | Energy feedback system for escalator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |