CN220107585U - Gravitational potential energy recovery system utilizing super capacitor - Google Patents
Gravitational potential energy recovery system utilizing super capacitor Download PDFInfo
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- CN220107585U CN220107585U CN202321705399.4U CN202321705399U CN220107585U CN 220107585 U CN220107585 U CN 220107585U CN 202321705399 U CN202321705399 U CN 202321705399U CN 220107585 U CN220107585 U CN 220107585U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 156
- 238000005381 potential energy Methods 0.000 title claims abstract description 37
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 238000004146 energy storage Methods 0.000 claims abstract description 75
- 238000010248 power generation Methods 0.000 claims abstract description 46
- 238000004804 winding Methods 0.000 claims description 18
- 238000013486 operation strategy Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Abstract
The utility model discloses a gravitational potential energy recovery system utilizing a super capacitor, which comprises hoisting equipment and a capacitor energy storage workstation, wherein the hoisting equipment is provided with the super capacitor, the super capacitor is connected with the capacitor energy storage workstation, the capacitor energy storage workstation is connected with a wind power generation system, a photovoltaic power generation system, a direct current high-voltage bus and a control system, the super capacitor, the wind power generation system and the photovoltaic power generation system are all connected with the control system, and the control system is connected with a power grid. The utility model reasonably arranges the operation strategies of the super capacitor and the capacitor energy storage workstation on the equipment, and can ensure the running stability, reduce the loading and unloading power consumption of the hoisting equipment and save the electric energy by combining the high-capacity capacitor energy storage with the low-capacity capacitor energy storage.
Description
Technical Field
The utility model relates to a gravitational potential energy recovery system utilizing a super capacitor, and belongs to the technical field of gravitational potential energy.
Background
In the process of harbour scattered goods and container handling transportation equipment, when equipment such as a portal crane, a tire type container portal crane, a shore container crane and the like works, a lifting mechanism thereof regenerates and brakes in the descending process of carrying the goods to generate a large amount of electric energy, and the part of energy is usually dissipated in the form of heat energy or returned to an alternating current power grid, so that the regenerated energy cannot be mutually utilized among all mechanisms in the equipment. If the potential energy generated by the descending of the lifting mechanism can be fully recovered and the part of energy is used for lifting the lifting mechanism or other loads, a great amount of electricity cost can be saved, the energy loss is reduced, and the port economic benefit is improved. At present, a gantry crane (hereinafter referred to as a gantry crane) potential energy recycling system taking a supercapacitor as an energy storage medium has been widely applied, and the potential energy of the lowering of a lifting mechanism is effectively stored by utilizing the characteristic of high-current rapid charging and discharging of the supercapacitor, and is used when the lifting mechanism ascends or the load suddenly increases, so that the direct-current bus voltage is stabilized. However, the super capacitor energy storage device provided by the patent with the application number of CN201821314362.8 is only applied to a single device, and when the super capacitor energy storage device is fully charged, if the voltage is continuously increased, an external resistor is required to consume energy, so that electric energy is wasted.
The crane motor generates a great deal of heat energy during braking, and this part of the regenerated energy must be treated. The traditional method for generating regenerated energy by processing during crane braking is to serially connect resistors with different resistance values at the direct current side in the frequency converter, so that part of the regenerated energy is consumed in the form of heat energy, and a large amount of energy is wasted; on the other hand, the motor in the crane has higher requirements on heat radiation performance, the service life of the container crane can be directly influenced by the over-high environment of the motor, and the method is not used any more.
Regenerated energy return is one method of handling regenerated energy that is commonly used today. The method saves power resources to a great extent, but in the application process, the method is easy to have great influence on the power grid. Meanwhile, in the process of returning energy to the power grid, the weak inversion wave does not meet the requirement, the electric power factor is too small, the waveform deformation is large, and the like, so that serious pollution is generated to the power grid, and the practical requirement cannot be met. Therefore, a device capable of efficiently recovering potential energy of hoisting equipment is needed, and the purposes of energy conservation and emission reduction are achieved.
Disclosure of Invention
The utility model aims to provide a gravitational potential energy recovery system utilizing a super capacitor, which reasonably arranges the operation strategies of a super capacitor and a capacitor energy storage workstation on equipment, and can ensure the running stability, reduce the loading and unloading power consumption of hoisting equipment and save electric energy by combining high-capacity capacitor energy storage with low-capacity capacitor energy storage.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an utilize super capacitor's gravitational potential energy recovery system, includes hoisting equipment and electric capacity energy storage workstation, be provided with super capacitor on the hoisting equipment, super capacitor connects in electric capacity energy storage workstation, is connected with wind power generation system, photovoltaic power generation system, direct current high voltage busbar and control system on the electric capacity energy storage workstation, and super capacitor, wind power generation system and photovoltaic power generation system all are connected with control system, are connected with the electric wire netting on the control system.
According to the gravitational potential energy recovery system utilizing the super capacitor, the frequency converter is arranged on the direct-current high-voltage bus.
The gravitational potential energy recovery system utilizing the super capacitor comprises a winding drum device, wherein the winding drum device is connected with an alternating current three-phase motor, and the alternating current three-phase motor is connected with the super capacitor.
According to the gravitational potential energy recovery system utilizing the super capacitor, the DC-DC module driving converter is arranged between the super capacitor and the capacitor energy storage workstation.
In the gravitational potential energy recovery system utilizing the super capacitor, the frequency converter is connected with the capacitor energy storage workstation.
In the gravitational potential energy recovery system utilizing the super capacitor, the DC-DC module drives the converter to be connected with the direct-current high-voltage bus; the high-power rapid charging and discharging characteristics of the super capacitor are fully utilized, the converter is driven by the bidirectional DC-DC module to rapidly recover the descending potential energy of the lifting mechanism, and the descending potential energy is used as energy supply required by lifting equipment when the lifting equipment ascends, so that the working energy consumption of the lifting equipment can be reduced, the energy utilization rate is improved, and the purposes of energy conservation and consumption reduction are achieved.
The gravitational potential energy recovery system utilizing the super capacitor comprises a plurality of container cranes and a plurality of field bridges.
Compared with the prior art, the utility model stores surplus electric quantity generated by new energy power stations such as wind power, photovoltaic and the like in the capacitor energy storage workstation, and the control system controls equipment to use electricity. The small super capacitor on the equipment is connected with the capacitor energy storage station through the control system, and when the electric quantity stored in the small super capacitor is insufficient to support the equipment for use, the capacitor energy storage station supplements the electric quantity for the lifting equipment. The operation strategy of the super capacitor and the capacitor energy storage workstation on the equipment is reasonably arranged, and the operation stability can be ensured and the electric energy can be saved by combining the high-capacity capacitor energy storage with the low-capacity capacitor energy storage.
Drawings
FIG. 1 is a schematic diagram of a control architecture of the present utility model;
FIG. 2 is a schematic diagram of the connection relationship between a DC high-voltage bus, a frequency converter, an AC three-phase motor, a super capacitor, a DC-DC module driving converter and a capacitor energy storage workstation;
FIG. 3 is a schematic diagram of the connection between the winding device and the AC three-phase motor and supercapacitor according to the present utility model.
Reference numerals: the system comprises a 1-capacitor energy storage workstation, a 2-super capacitor, a 3-direct current high-voltage bus, a 4-control system, a 5-power grid, a 6-frequency converter, a 7-winding drum device, an 8-alternating current three-phase motor and a 9-DC-DC module driving converter.
The utility model is further described below with reference to the drawings and the detailed description.
Detailed Description
Example 1 of the present utility model: the utility model provides an utilize super capacitor's gravitational potential energy recovery system, includes hoisting equipment and electric capacity energy storage workstation 1, its characterized in that, be provided with super capacitor 2 on the hoisting equipment, super capacitor 2 is connected in electric capacity energy storage workstation 1, is connected with wind power generation system, photovoltaic power generation system, direct current high voltage busbar 3 and control system 4 on the electric capacity energy storage workstation 1, and super capacitor 2, wind power generation system and photovoltaic power generation system all are connected with control system 4, are connected with electric wire netting 5 on the control system 4.
Example 2 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; the direct-current high-voltage bus 3 is provided with a frequency converter 6.
Example 3 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; a frequency converter 6 is arranged on the direct-current high-voltage bus 3; the hoisting equipment comprises a winding drum device 7, an alternating current three-phase motor 8 is connected to the winding drum device 7, and the alternating current three-phase motor 8 is connected with the super capacitor 2.
Example 4 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; a frequency converter 6 is arranged on the direct-current high-voltage bus 3; the hoisting equipment comprises a winding drum device 7, wherein an alternating current three-phase motor 8 is connected to the winding drum device 7, and the alternating current three-phase motor 8 is connected with the super capacitor 2; a DC-DC module driving converter 9 is arranged between the super capacitor 2 and the capacitor energy storage workstation 1.
Example 5 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; a frequency converter 6 is arranged on the direct-current high-voltage bus 3; the hoisting equipment comprises a winding drum device 7, wherein an alternating current three-phase motor 8 is connected to the winding drum device 7, and the alternating current three-phase motor 8 is connected with the super capacitor 2; a DC-DC module driving converter 9 is arranged between the super capacitor 2 and the capacitor energy storage workstation 1; the frequency converter 6 is connected with the capacitive energy storage workstation 1.
Example 6 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; a frequency converter 6 is arranged on the direct-current high-voltage bus 3; the hoisting equipment comprises a winding drum device 7, wherein an alternating current three-phase motor 8 is connected to the winding drum device 7, and the alternating current three-phase motor 8 is connected with the super capacitor 2; a DC-DC module driving converter 9 is arranged between the super capacitor 2 and the capacitor energy storage workstation 1; the frequency converter 6 is connected with the capacitive energy storage workstation 1; the DC-DC module drive converter 9 is connected to the direct current high voltage bus 3.
Example 7 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; a frequency converter 6 is arranged on the direct-current high-voltage bus 3; the hoisting equipment comprises a winding drum device 7, wherein an alternating current three-phase motor 8 is connected to the winding drum device 7, and the alternating current three-phase motor 8 is connected with the super capacitor 2; a DC-DC module driving converter 9 is arranged between the super capacitor 2 and the capacitor energy storage workstation 1; the frequency converter 6 is connected with the capacitive energy storage workstation 1; the DC-DC module driving converter 9 is connected with the direct current high-voltage bus 3; the lifting equipment comprises a plurality of container cranes and a plurality of field bridges.
Example 8 of the present utility model: the gravitational potential energy recovery system utilizing the super capacitor comprises hoisting equipment and a capacitor energy storage workstation 1, and is characterized in that the hoisting equipment is provided with the super capacitor 2, the super capacitor 2 is connected with the capacitor energy storage workstation 1, the capacitor energy storage workstation 1 is connected with a wind power generation system, a photovoltaic power generation system, a direct-current high-voltage bus 3 and a control system 4, the super capacitor 2, the wind power generation system and the photovoltaic power generation system are all connected with the control system 4, and the control system 4 is connected with a power grid 5; a frequency converter 6 is arranged on the direct-current high-voltage bus 3; the hoisting equipment comprises a winding drum device 7, wherein an alternating current three-phase motor 8 is connected to the winding drum device 7, and the alternating current three-phase motor 8 is connected with the super capacitor 2; a DC-DC module driving converter 9 is arranged between the super capacitor 2 and the capacitor energy storage workstation 1; the frequency converter 6 is connected with the capacitive energy storage workstation 1; the DC-DC module driving converter 9 is connected with the direct current high-voltage bus 3; the hoisting equipment comprises a plurality of container cranes and a plurality of field bridges; the system is used in a harbor area, and the super capacitor 2 comprises a small super capacitor and a large super capacitor.
The working principle of one embodiment of the utility model is as follows:
the utility model works as follows:
the lifting devices in the harbor area comprise container cranes, field bridges and the like, the lifting mechanism of each lifting device is additionally provided with super capacitors 2 to recover potential energy when falling heavy objects, in order to ensure the running stability of the devices in the running process, a super capacitor energy storage station is built in the harbor area, surplus electric quantity generated by new energy power stations such as wind power, photovoltaic and the like is stored in a capacitor energy storage workstation 1, and the control system 4 controls the devices to use electricity. The small super capacitor on the equipment is connected with the capacitor energy storage workstation 1 through the control system 4, and when the electric quantity stored in the small super capacitor is insufficient to support the equipment for use, the capacitor energy storage workstation 1 supplements the electric quantity for the lifting equipment. The operation strategy of the super capacitor and the capacitor energy storage workstation 1 on the equipment is reasonably arranged, and the operation stability can be ensured and the electric energy can be saved by combining the high-capacity capacitor energy storage with the low-capacity capacitor energy storage.
When the super capacitor 2 is in the power recovery mode and the heavy object is in the descending process, the system is in a power generation state, and the power output by power generation is fed back to the direct-current high-voltage bus 3 of the frequency converter 6, so that the voltage of the direct-current high-voltage bus 3 is increased. The DC-DC module drives the converter 9 to start working and the capacitive energy storage working station 1 to start working, different starting working thresholds are respectively set, and the working threshold of the DC-DC module drives the converter 9 to be smaller than the working threshold of the capacitive energy storage working station 1. When the voltage of the direct-current high-voltage bus 3 rises to the working threshold value of the DC-DC module driving converter 9, the DC-DC module driving converter 9 starts to work, and energy of the direct-current high-voltage bus 3 is stored in the super capacitor 2 preferentially. When the super capacitor 2 is fully charged, and when power is continuously supplied, the voltage value of the direct-current high-voltage bus 3 rises to exceed the working threshold of the capacitor energy storage workstation 1, and the control system 4 is utilized to flow redundant electric quantity into the capacitor energy storage workstation 1, so that potential energy can be recycled again.
When the super capacitor 2 is in an electric energy utilization mode, a heavy object is operated in an ascending process, the system is in an electric energy consumption state, the voltage of the direct-current high-voltage bus 3 of the frequency converter 6 is reduced, when the direct-current high-voltage bus 3 is lower than a lower limit threshold value for starting the operation of the DC-DC module driving converter 9, the DC-DC module driving converter 9 is started to operate, electric energy stored by the super capacitor 2 is released into the direct-current high-voltage bus 3 for preferential use, and the consumption of a power supply is reduced. When the electricity consumption of the super capacitor 2 reaches the minimum value, the capacitor energy storage workstation 1 supplies power.
When the energy in the super capacitor 2 is reduced to the minimum value of the set storage capacity, potential energy is not supplemented; the DC-DC module drives the converter 9 to disconnect the direct current loop until the voltage of the next direct current high-voltage bus 3 reaches a charging threshold, the super capacitor 2 enters a charging state, and the direct current loop is connected to resume normal operation.
Claims (7)
1. The utility model provides an utilize super capacitor's gravitational potential energy recovery system, includes hoisting equipment and electric capacity energy storage workstation (1), its characterized in that, be provided with super capacitor (2) on the hoisting equipment, super capacitor (2) are connected in electric capacity energy storage workstation (1), are connected with wind power generation system, photovoltaic power generation system, direct current high voltage busbar (3) and control system (4) on electric capacity energy storage workstation (1), super capacitor (2), wind power generation system and photovoltaic power generation system all are connected with control system (4), are connected with electric wire netting (5) on control system (4).
2. The gravitational potential energy recovery system utilizing the super capacitor as claimed in claim 1, wherein a frequency converter (6) is arranged on the direct-current high-voltage bus (3).
3. The gravitational potential energy recovery system utilizing the super capacitor as claimed in claim 2, wherein the hoisting equipment comprises a winding drum device (7), an alternating current three-phase motor (8) is connected to the winding drum device (7), and the alternating current three-phase motor (8) is connected with the super capacitor (2).
4. A gravitational potential energy recovery system utilizing super capacitor as claimed in claim 3, characterized in that a DC-DC module driving converter (9) is arranged between the super capacitor (2) and the capacitor energy storage workstation (1).
5. The gravitational potential energy recovery system utilizing super capacitor as claimed in claim 4, wherein the frequency converter (6) is connected with the capacitive energy storage workstation (1).
6. The gravitational potential energy recovery system utilizing super capacitor of claim 5, wherein the DC-DC module driving converter (9) is connected with the DC high voltage bus (3).
7. The gravitational potential energy recovery system utilizing super capacitor of claim 1, wherein said lifting device comprises a plurality of container cranes, a plurality of field bridges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705399.4U CN220107585U (en) | 2023-06-30 | 2023-06-30 | Gravitational potential energy recovery system utilizing super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705399.4U CN220107585U (en) | 2023-06-30 | 2023-06-30 | Gravitational potential energy recovery system utilizing super capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN220107585U true CN220107585U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705399.4U Active CN220107585U (en) | 2023-06-30 | 2023-06-30 | Gravitational potential energy recovery system utilizing super capacitor |
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| Country | Link |
|---|---|
| CN (1) | CN220107585U (en) |
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2023
- 2023-06-30 CN CN202321705399.4U patent/CN220107585U/en active Active
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