CN218733386U - Energy storage type electricity saver for elevator - Google Patents
Energy storage type electricity saver for elevator Download PDFInfo
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- CN218733386U CN218733386U CN202222938612.8U CN202222938612U CN218733386U CN 218733386 U CN218733386 U CN 218733386U CN 202222938612 U CN202222938612 U CN 202222938612U CN 218733386 U CN218733386 U CN 218733386U
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- elevator
- energy storage
- energy
- variable frequency
- frequency controller
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The utility model discloses an energy storage type electricity saver for an elevator, which comprises an energy storage electricity saver system and an elevator variable frequency controller system, wherein the energy storage electricity saver system comprises a DC/DC bidirectional converter module and an energy storage module; the elevator variable frequency controller system comprises an elevator tractor, a variable frequency controller and a brake resistance unit; the DC/DC bidirectional converter module is connected with the direct current bus and the energy storage module; the elevator traction machine is connected with the three-phase line and the variable frequency controller. The utility model discloses, the electric energy that produces when running elevator electricity generation charges for the energy storage module through DC/DC bidirectional converter module, temporarily stores the electric energy, and when the elevator was in the power consumption operation, directly send back the direct current bus-bar terminal of the variable frequency controller of elevator hauler through the electric energy of energy storage module energy storage with a set of DC/DC bidirectional converter module to reach energy-conserving purpose.
Description
Technical Field
The utility model relates to an elevator control energy storage technical field specifically is an energy storage formula electricity-saving appliance for elevator.
Background
The elevator has two methods at the time of energy saving, firstly, a gearless host is adopted, so that the electricity consumption of the elevator is reduced and the electric energy utilization is improved; another concept is the collection and utilization of the elevator inertia and the elevator braking power generation energy. In the early days, an inverter is proposed to feed the energy regenerated and generated at the direct-current end of a frequency converter to a power grid, the device is called a feedback type for short, the feedback type is directly combined with the power grid, and the feedback device influences the safety of the power grid and interferes user equipment and even leads to the shutdown protection of an elevator because harmonic waves cannot be controlled, so the feedback type cannot be popularized all the time. With the maturity of super capacitor technology and the breakthrough of high-power electronic device technology, shanghai steadily lida power electronic limited company has led to the introduction of a novel energy storage type elevator energy storage type electricity saver system.
The energy-saving core of the elevator is to utilize the energy consumed by the brake resistor, and if the energy can be utilized, the considerable energy-saving effect is brought, the heat generated by the machine room can be reduced, and the safety of the elevator is promoted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy storage formula electricity-saving appliance for elevator to solve the problem among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme: an energy storage type electricity saver for an elevator comprises an energy storage electricity saver system and an elevator variable frequency controller system, wherein the energy storage electricity saver system comprises a DC/DC bidirectional converter module and an energy storage module; the elevator variable frequency controller system comprises an elevator tractor, a variable frequency controller and a brake resistance unit; the DC/DC bidirectional converter module is connected with the direct current bus and the energy storage module; the elevator traction machine is connected with the three-phase line and the variable frequency controller.
Preferably, the braking resistance unit comprises an energy consumption resistance and a braking unit, and the energy consumption resistance is connected with the direct current bus and is connected with the braking unit.
Preferably, the energy storage module is a super capacitor energy storage module.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the energy storage module is charged by the electric energy generated during the power generation operation of the elevator through the DC/DC bidirectional converter module, the electric energy is temporarily stored, and when the elevator is in the energy consumption operation, the electric energy stored by the energy storage module is directly sent back to the DC bus end of the variable frequency controller of the elevator traction machine through the same group of DC/DC bidirectional converter module, so that the energy saving purpose is achieved.
2. When the power supply is suddenly cut off and the elevator enters an emergency state, the DC/DC bidirectional converter module is directly switched to an energy consumption working state, the voltage of the energy storage module supplies power to the direct-current bus through the DC/DC bidirectional converter module, switching transition is not needed, the condition of emergency stop of the elevator brake cannot be caused, and the passengers are prevented from being injured by panic and the like; consequently, this application has solved the elevator in the existing market and has wasted energy when the operation, and the electric energy conversion causes elevator machine room temperature to rise scheduling problem by a wide margin for heat energy.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an elevator traction machine; 2. a variable frequency controller; 3. a brake resistance unit; 4. a DC/DC bidirectional converter module; 5. an energy storage module.
Detailed Description
To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, an energy storage type power saver for an elevator includes an energy storage power saver system and an elevator frequency conversion controller system, where the energy storage power saver system includes a DC/DC bidirectional converter module 4 and an energy storage module 5; the elevator variable frequency controller system comprises an elevator tractor 1, a variable frequency controller 2 and a brake resistance unit 3; the DC/DC bidirectional converter module 4 is connected with a DC bus and is connected with an energy storage module 5; the elevator traction machine 1 is connected with a three-phase line and is connected with the variable frequency controller 2; the braking resistance unit 3 comprises an energy consumption resistance and a braking unit, and the energy consumption resistance is connected with the direct current bus and the braking unit; the energy storage module 5 adopts a super capacitor energy storage module.
When the elevator works in a power generation state, the DC/DC bidirectional conversion module charges the energy storage module by the voltage of the direct current bus; when the elevator works in an energy consumption state, the DC/DC bidirectional conversion module supplies power to the direct current bus by using the voltage of the energy storage module; when the power supply is suddenly cut off, the elevator enters an emergency state, the DC/DC bidirectional converter module is directly switched into an energy consumption working state, and the voltage of the energy storage module supplies power to the direct current bus through the DC/DC bidirectional converter module; the energy stored by the energy storage module is in a continuous charging and discharging state; the DC/DC bidirectional converter module only provides power which is enough to drive the elevator traction machine to the direct current bus; the energy-saving core of the elevator is to utilize the energy consumed by the brake resistor, and if the energy can be utilized, considerable energy-saving effect is brought, the heat generated by a machine room can be reduced, and the safety of the elevator is promoted.
The energy-saving system mainly comprises a high-power bidirectional direct-current converter and a super-capacitor energy storage unit, so that regenerated power energy flows at the direct-current end of the frequency converter and is isolated from a power grid, and compared with a feedback type energy-saving system adopted by the conventional elevator, the energy-saving system of the energy-storing elevator has obvious advantages; the actual usage amount of the feedback type electric energy cannot be calculated, the feedback type electric energy cannot be used up by other electric facilities in the same building at the same time, the power consumption on an electric meter cannot be reduced to reduce the use cost of the electric energy of a user, the fluctuation of the current of a power grid can be caused due to the discontinuous energy conservation of the feedback type elevator, the large fluctuation of the feedback energy and the like, and the frequent faults of the elevator are caused by a large amount of harmonic waves. The energy-storage type elevator energy-saving system well avoids the defects, the energy consumed by the brake resistor is stored and utilized, the comprehensive electricity-saving rate is up to 35%, the energy-storage type elevator electricity-saving device absorbs electric energy from the direct current end, no harmonic wave is generated, a fault source is avoided in principle, and the safety of elevator operation is greatly improved.
The utility model discloses a theory of operation is: when the elevator is in energy-consuming operation, the electric energy stored by the energy storage module is directly sent back to a direct-current bus terminal of a variable-frequency controller of the elevator tractor through the same group of DC/DC bidirectional converter modules, so that the aim of saving energy is fulfilled; when the power supply is suddenly cut off and the elevator enters an emergency state, the DC/DC bidirectional converter module is directly switched into an energy consumption working state, the voltage of the energy storage module supplies power to the direct current bus through the DC/DC bidirectional converter module, switching transition is not needed, the condition of emergency stop of the elevator brake is avoided, and the passengers are prevented from being injured by panic and the like; consequently, this application has solved the elevator in the existing market and has wasted energy when the operation, and the electric energy conversion causes elevator machine room temperature to rise scheduling problem by a wide margin for heat energy.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides an energy storage formula electricity-saving appliance for elevator which characterized in that: comprises an energy storage and electricity saving system and an elevator variable frequency controller system,
the energy storage electricity saver system comprises a DC/DC bidirectional converter module (4) and an energy storage module (5);
the elevator variable frequency controller system comprises an elevator traction machine (1), a variable frequency controller (2) and a brake resistance unit (3);
the DC/DC bidirectional converter module (4) is connected with the DC bus and is connected with the energy storage module (5);
the elevator traction machine (1) is connected with the three-phase line and connected with the variable frequency controller (2).
2. The energy storage type electricity saver for the elevator according to claim 1, characterized in that: the braking resistance unit (3) comprises an energy consumption resistance and a braking unit, and the energy consumption resistance is connected with the direct current bus and connected with the braking unit.
3. The energy storage type electricity saver for the elevator according to claim 1, characterized in that: the energy storage module (5) adopts a super capacitor energy storage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938612.8U CN218733386U (en) | 2022-11-04 | 2022-11-04 | Energy storage type electricity saver for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938612.8U CN218733386U (en) | 2022-11-04 | 2022-11-04 | Energy storage type electricity saver for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733386U true CN218733386U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222938612.8U Active CN218733386U (en) | 2022-11-04 | 2022-11-04 | Energy storage type electricity saver for elevator |
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| CN (1) | CN218733386U (en) |
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2022
- 2022-11-04 CN CN202222938612.8U patent/CN218733386U/en active Active
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