CN203086156U - Energy saving apparatus of elevator - Google Patents
Energy saving apparatus of elevator Download PDFInfo
- Publication number
- CN203086156U CN203086156U CN 201320035191 CN201320035191U CN203086156U CN 203086156 U CN203086156 U CN 203086156U CN 201320035191 CN201320035191 CN 201320035191 CN 201320035191 U CN201320035191 U CN 201320035191U CN 203086156 U CN203086156 U CN 203086156U
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- Prior art keywords
- energy
- elevator
- electrical network
- frequency converter
- saving device
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Abstract
The utility model provides an energy saving apparatus for an elevator. The energy saving apparatus comprises a motor, a frequency converter, a capacitor, an inverter and a controller, wherein the motor drives the elevator compartment of the energy saving apparatus to move, the frequency converter converts electric energy generated by the motor into direct current, the capacitor stores the direct current output by the frequency converter, and the controller identifies the phase sequence, phase, voltage instantaneous value and current instantaneous value of an electrical network and controls the inverter to convert the direct current output by the frequency converter into alternating current identical in frequency and phase with the electrical network according to the identified phase sequence, phase, voltage instantaneous value and current instantaneous value of the electrical network and output the alternating current to the electrical network. The frequency converter converts the electric energy generated by the motor into alternating current identical in frequency and phase with the electrical network and feeds back to the electrical network, which reasonably uses electric energy generated by the motor and saves energy.
Description
Technical field
The utility model relates to the energy-saving device of elevator field, especially relates to a kind of energy-saving device of elevator.
Background technology
Energy-saving device of elevator has two states in running, i.e. motor-operated running state and generator operation state.In the fully loaded upwards lifting process of energy-saving device of elevator, energy-saving device of elevator is in motor-operated running state (electric energy changes mechanical energy into), and main power source is usually by the power supply of commercial power (as the 380V alternating current) as continued power.In order to guarantee that energy-saving device of elevator can normal flat bed when the instant cut-off, need the configuration uninterrupted power supply.In order to guarantee that energy-saving device of elevator can normally move, and all disposes stand-by power supply (as house generator) in the energy-saving device of elevator system when having a power failure; And in energy-saving device of elevator landing process downwards; motor is in generator operation state (mechanical energy changes electric energy into); electric energy by the power converter output module fly-wheel diode and be rectified into direct current; be added in then on the dc bus of frequency converter; the voltage of dc bus is raise; if can not in time these electric energy be discharged, energy-saving device of elevator will break down protection and can't normally use.
Too high in order to prevent busbar voltage, all be that the electric energy that sends when adopting brake unit that energy-saving device of elevator is descended is released on the resistance in the past, this moment, electric energy changed heat energy into, and its heat release is the space around, forms secondary pollution.
The utility model content
In order to overcome above-mentioned the deficiencies in the prior art,, the utility model the electric energy of motor conversion rationally can be utilized the energy-saving device of elevator that reaches energy-conservation purpose thereby providing a kind of.
A kind of energy-saving device of elevator comprises:
Motor is used to drag the energy-saving device of elevator car movement;
Frequency converter is used for the electric energy that described motor produces is converted to direct current;
Capacitor is electrically connected to described frequency converter, is used to store the direct current of described frequency converter output;
Inverter is electrically connected to described capacitor; And
Controller, be electrically connected to described inverter, be used to discern phase sequence, phase place, instantaneous voltage and the current instantaneous value of electrical network, and according to phase sequence, phase place, instantaneous voltage and the current instantaneous value of the electrical network that recognizes control that described inverter is converted to the direct current of described frequency converter output and described electrical network with the alternating current of homophase frequently, and export described electrical network to.
Further, described frequency converter also is used for the alternating current of electrical network is converted to the alternating current of characteristic frequency, rotates to drive described motor.
Further, described energy-saving device of elevator also comprises the rectification filtering unit that is electrically connected to described capacitor and frequency converter, and described rectification filtering unit is used for the direct current of described frequency converter output is carried out exporting described capacitor to after rectification and the filtering.
Further, described inverter is for using the Intelligent Power Module of insulated gate bipolar transistor.
Further, described controller control that described inverter is converted to the direct current of described capacitor output and 380V three-phase alternating current electrical network with the alternating current of homophase frequently.
Compared to prior art, the electric energy that energy-saving device of elevator described in the utility model produces motor by frequency converter is converted to and the alternating current of electrical network with the frequency homophase, feeds back to electrical network again, and the electric energy that motor is produced is rationally utilized, and has saved the energy.
Description of drawings
Fig. 1 is the functional block diagram of the energy-saving device of elevator of the utility model better embodiment.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is further specified.
See also Fig. 1, the energy-saving device of elevator 100 of the utility model better embodiment comprises motor 10, frequency converter 20, capacitor 30, rectification filtering unit 40, inverter 50 and controller 60.
The car (figure does not show) that motor 10 is used to drive energy-saving device of elevator 100 rotates.
Compared to prior art, the electric energy that energy-saving device of elevator 100 described in the utility model produces motor 10 by frequency converter 50 is converted to and the alternating current of electrical network with the frequency homophase, feed back to electrical network again, the electric energy that motor 10 is produced is rationally utilized, and has saved the energy.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (4)
1. energy-saving device of elevator comprises:
Motor is used to drag the energy-saving device of elevator car movement;
It is characterized in that described energy-saving device of elevator also comprises:
Frequency converter is used for the electric energy that described motor produces is converted to direct current;
Capacitor is electrically connected to described frequency converter, is used to store the direct current of described frequency converter output;
Inverter is electrically connected to described capacitor; And
Controller, be electrically connected to described inverter, be used to discern phase sequence, phase place, instantaneous voltage and the current instantaneous value of electrical network, and according to phase sequence, phase place, instantaneous voltage and the current instantaneous value of the electrical network that recognizes control that described inverter is converted to the direct current of described frequency converter output and described electrical network with the alternating current of homophase frequently, and export described electrical network to.
2. energy-saving device of elevator as claimed in claim 1, it is characterized in that: described energy-saving device of elevator also comprises the rectification filtering unit that is electrically connected to described capacitor and frequency converter, and described rectification filtering unit is used for the direct current of described frequency converter output is carried out exporting described capacitor to after rectification and the filtering.
3. energy-saving device of elevator as claimed in claim 1 is characterized in that: described inverter is for using the Intelligent Power Module of insulated gate bipolar transistor.
4. energy-saving device of elevator as claimed in claim 1 is characterized in that: described controller control that described inverter is converted to the direct current of described capacitor output and 380V three-phase alternating current electrical network with the alternating current of homophase frequently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035191 CN203086156U (en) | 2013-01-23 | 2013-01-23 | Energy saving apparatus of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035191 CN203086156U (en) | 2013-01-23 | 2013-01-23 | Energy saving apparatus of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203086156U true CN203086156U (en) | 2013-07-24 |
Family
ID=48831961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320035191 Expired - Lifetime CN203086156U (en) | 2013-01-23 | 2013-01-23 | Energy saving apparatus of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203086156U (en) |
-
2013
- 2013-01-23 CN CN 201320035191 patent/CN203086156U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Elevator energy saving device with a plurality of working modes and control method thereof Effective date of registration: 20151030 Granted publication date: 20130724 Pledgee: Shenzhen SME financing Company limited by guarantee Pledgor: SHENZHEN DAZHONGXINYUAN ENERGY SAVING TECHNOLOGY Co.,Ltd. Registration number: 2015990000940 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |