CN110729947A - Mooring ball energy system and control method - Google Patents
Mooring ball energy system and control method Download PDFInfo
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- CN110729947A CN110729947A CN201910899677.6A CN201910899677A CN110729947A CN 110729947 A CN110729947 A CN 110729947A CN 201910899677 A CN201910899677 A CN 201910899677A CN 110729947 A CN110729947 A CN 110729947A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010248 power generation Methods 0.000 claims abstract description 107
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/007—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with means for converting solar radiation into useful energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/30—Wind motors specially adapted for installation in particular locations
- F03D9/32—Wind motors specially adapted for installation in particular locations on moving objects, e.g. vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage means
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the invention provides a mooring ball energy system and a control method thereof, wherein the system comprises a load device, a solar battery, a vertical axis wind power generation device, a ground power supply device, a power supply controller, a CAN bus and a lithium battery pack; the vertical axis wind power generation device is electrically connected with the power supply controller, the solar cell is electrically connected with the power supply controller, and the ground power supply device is electrically connected with the power supply controller; the lithium battery pack and the load device are respectively electrically connected with the power supply controller, and the CAN bus is electrically connected with the power supply controller; the power supply controller acquires load power information from the load device, and supplies power to the solar cell, the vertical axis wind power generation device and the ground power supply device according to the captive balloon working mode information and the load power information. By adding the solar cell and the vertical axis wind power generation device, the dependence of the captive ball on ground power is reduced.
Description
Technical Field
The invention relates to the technical field of energy control, in particular to a tethered ball energy system and a control method.
Background
The captive ball is an aerial carrier which enables a captive balloon to stably float in the air under the traction action of a captive rope, and is widely applied to the fields of military affairs, science, commerce and the like, wherein the captive ball in the field of military affairs is mainly applied to the purposes of detection, monitoring, communication, weapon detection and the like according to different sensors loaded on the captive ball. The device mainly comprises a mooring balloon, an equipment cabin and a mooring rope. The working principle is as follows: the captive balloon is filled with light-specific gravity gas, the captive balloon can rise under the action of buoyancy due to the fact that the density of the captive balloon is lower than that of air, and meanwhile due to the existence of wind, the captive balloon can achieve high-altitude static floating under the comprehensive action of buoyancy, traction force and gravity, so that tasks such as communication, investigation, monitoring and the like can be performed by using high-altitude advantages.
However, the existing mooring ball is mainly used for transmitting power from the ground through a cable arranged in a mooring rope, so that power supply for the mooring ball is realized, power consumption of equipment carried by the mooring ball depends on ground supply, and therefore the mooring ball must be matched with a power generation vehicle for use, and the mooring ball is very troublesome, and therefore a reliable energy guarantee is difficult to provide for long-term parking of the mooring ball in a ground power supply mode.
Therefore, how to provide reliable energy guarantee for long-term staying of the tethered ball has become an urgent technical problem to be solved in the industry.
Disclosure of Invention
Embodiments of the present invention provide a mooring ball energy system and a control method thereof, so as to solve the technical problems mentioned in the above background art, or at least partially solve the technical problems mentioned in the above background art.
In a first aspect, an embodiment of the present invention provides a mooring ball energy system, including a load device, further including: the system comprises a solar cell, a vertical axis wind power generation device, a ground power supply device, a power supply controller, a CAN bus and a lithium battery pack;
the vertical axis wind power generation device is electrically connected with a power supply controller, the solar cell is electrically connected with the power supply controller, and the ground power supply device is electrically connected with the power supply controller;
the lithium battery pack and the load device are respectively electrically connected with the power supply controller, and the CAN bus is electrically connected with the power supply controller;
the CAN bus acquires the working mode information of the captive balloon, the power supply controller acquires the load power information from the load device, and the solar battery, the vertical axis wind power generation device and the ground power supply device are supplied with power and adjusted according to the working mode information of the captive balloon and the load power information.
More specifically, the vertical axis wind turbine specifically includes: the system comprises an impeller, a generator, a transmission mechanism, a tower and a rectifier;
the impeller is arranged on a transmission mechanism, the transmission mechanism is connected with the generator, the rectifier is electrically connected with the generator, and the rectifier is electrically connected with the power controller;
wherein the tower is used for fixing the transmission mechanism.
More specifically, the lithium battery pack is formed by connecting 8 battery submodules in series, wherein each electronic module is formed by connecting 35 ternary lithium battery cells in parallel.
In a second aspect, an embodiment of the present invention provides a captive ball based on the captive ball energy system in the first aspect, including a captive balloon, and further including a first dc cable, a second dc cable, a third dc cable, a fourth dc cable, a first ac cable, and a tether;
the solar cell is fixed above the captive balloon, the vertical axis wind power generation device is vertically arranged at the bottom of the captive balloon, and the ground power supply device, the power supply controller, the lithium battery pack, the CAN bus and the load device are all arranged inside the captive balloon;
the mooring cable is electrically connected with the ground power supply device, the ground power supply device is electrically connected with the power controller through a first direct current cable, the vertical axis wind power generation device is electrically connected with the power controller through a second direct current cable, the solar cell is electrically connected with the power controller through a third direct current cable, and the lithium battery is electrically connected with the power controller through a fourth direct current cable;
the CAN bus is used for acquiring the information of the working mode of the captive balloon.
In a third aspect, an embodiment of the present invention provides a tethered ball energy control method based on the tethered ball energy system in the first aspect, including:
acquiring the working mode information of the captive balloon through the CAN bus, and acquiring load power information according to the load device;
and power supply adjustment is carried out on the solar cell, the vertical axis wind power generation device and the ground power supply device according to the captive balloon working mode information and the load power information.
More specifically, the tethered balloon operating mode information specifically includes: mooring state information and non-mooring state information.
More specifically, if the information of the working mode of the captive balloon obtained by the CAN bus is the information of the mooring state, correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the first power generation power information is larger than the load power information;
comparing the sum of the load power information and the maximum charging power of the lithium battery pack with first power generation power information;
when the sum of the load power information and the maximum charging power of the lithium battery pack is smaller than the first generating power information and the sum of the generating power of the solar battery and the power of the vertical axis wind power generation device can meet the load, the lithium battery pack is stopped to be charged through the ground power supply device, and the lithium battery pack is charged only through the solar battery and the vertical axis wind power generation device.
More specifically, if the information of the working mode of the captive balloon obtained by the CAN bus is the information of the mooring state, correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the first generating power information is less than or equal to the load power information; and the sum of the power generation power of the solar cell, the power generation power of the vertical axis wind power generation device and the power generation power of the ground power supply device is equal to the sum of the load power information and the maximum charging power of the lithium battery pack, so that the lithium battery pack is charged under the condition of meeting the load.
More specifically, if the information of the working mode of the captive balloon obtained by the CAN bus is the information of the non-anchoring state, correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the load power information is larger than or equal to the first generating power information, acquiring the maximum discharging power of the lithium battery pack;
and if the sum of the maximum discharge power and the first generating power information of the lithium battery pack is greater than or equal to the load power information and the sum of the generating power of the solar battery and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
More specifically, the method further comprises:
if the load power information is smaller than the first power generation power information, acquiring the maximum discharge power of the lithium battery pack;
and if the sum of the load power information and the maximum discharge power of the lithium battery pack is greater than the first generating power information and the sum of the solar battery generating power and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
According to the captive ball energy system and the control method provided by the embodiment of the invention, the solar cell is added, the high-altitude solar illumination intensity is fully utilized, a certain amount of generated energy is generated through the solar cell, and meanwhile, the vertical axis wind power generation device is added aiming at the characteristics of high-altitude wind speed, wide wind distribution and high wind stability, the high-altitude wind energy and solar energy are effectively utilized to generate more electric quantity, and the solar cell, the vertical axis wind power generation device and the power supply device are effectively utilized to generate electricity on the premise of meeting the load of a captive ball through efficient power supply management on the solar cell, the vertical axis wind power generation device and the power supply device, so that redundant electric quantity is stored in the lithium battery pack, the dependence of the captive ball power supply system on ground power is reduced as much as possible, and reliable energy guarantee is provided for long-term parking of the captive ball.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a tethered ball energy system as described in one embodiment of the present invention;
FIG. 2 is a schematic diagram of a tethered ball according to one embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a method for controlling energy of a tethered ball according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a tethered ball energy system according to an embodiment of the present invention, as shown in fig. 1, including a load device 170, further including: the system comprises a solar cell 110, a vertical axis wind power generation device 120, a ground power supply device 130, a power controller 140, a CAN bus 150 and a lithium battery pack 160; the vertical axis wind turbine 120 is electrically connected with the power controller 140, the solar cell 110 is electrically connected with the power controller 140, and the ground power supply device 130 is electrically connected with the power controller 140;
the lithium battery pack 160 and the load device 170 are electrically connected to the power controller 140, respectively, and the CAN bus 150 is electrically connected to the power controller 140;
the CAN bus 150 obtains the captive balloon operation mode information, the power controller 140 obtains the load power information from the load device 170, adjusts the generated power of the solar cell 110, the vertical axis wind turbine 120, and the ground power supply device 130 according to the captive balloon operation mode information and the load power information, and then charges the lithium battery pack 160.
Specifically, the power controller 140 described in the embodiment of the present invention is used as a core unit of the energy system, and is responsible for performing power conversion and distribution on energy generated by ground power supply, wind power generation, and solar power generation and stored energy of the lithium battery pack, so as to be used by the tethered ball load, and charge the lithium battery pack.
The vertical axis wind turbine 120 according to the embodiment of the present invention includes a wind turbine, a gear transmission mechanism, a generator, and a rectifier, and the rectifier converts ac power output from the generator into dc power and inputs the dc power to the power controller 140.
The ground power supply device 130 in the embodiment of the invention comprises a booster, a voltage reducer and an AC/DC converter, wherein the booster boosts 220V alternating current of ground commercial power to 3000V alternating current, then the voltage reducer is input into a ball-mounted voltage reducer through a mooring cable, the voltage reducer reduces 3000V alternating current to 220V alternating current, and finally the voltage reducer is converted into direct current voltage 35V through the AC/DC converter and finally input into the power controller.
The CAN bus 150 described in the embodiments of the present invention is connected to a tethered ball flight control system communication interface to obtain the tethered balloon operating mode information and transmit the tethered balloon operating mode information to the power controller 140.
The charge/discharge interface of the lithium battery pack 160 described in the embodiment of the present invention is electrically connected to the power controller 140 through two electrical couplings.
According to the embodiment of the invention, by adding the solar cell, the high-altitude solar illumination intensity is fully utilized, a certain amount of generated energy is generated by the solar cell, and meanwhile, the vertical axis wind power generation device is added aiming at the characteristics of high-altitude wind speed, wide wind distribution and high wind stability, so that high-altitude wind energy and solar energy are effectively utilized to generate more electric quantity, and through efficient power supply management of the solar cell, the vertical axis wind power generation device and the power supply device, on the premise of meeting the mooring ball load, the solar cell and the vertical axis wind power generation device are effectively utilized to generate electricity, and redundant electric quantity is stored in the lithium battery pack, so that the dependence of a mooring ball power supply system on ground power is reduced as much as possible, and reliable energy guarantee is provided for long-term mooring ball parking.
On the basis of the above embodiment, the vertical axis wind turbine specifically includes: a wind turbine, a generator, a gear drive, a tower and a rectifier;
the wind turbine is arranged on a gear transmission mechanism, the gear transmission mechanism is connected with the generator, the rectifier is electrically connected with the generator, and the rectifier is electrically connected with the power controller;
wherein the tower is used for fixing the transmission mechanism.
Specifically, the wind turbine starts to rotate when blowing at high altitude, the gear rotating mechanism is driven to increase the rotating speed, then the generator is combined to generate electricity, the generator outputs alternating current, the alternating current is converted into direct current through the rectifier, and the converted direct current is input into the power controller.
In one embodiment, the rated power of the vertical axis wind power generation is 300W, the rated voltage is 24V, and the rated wind speed is 10 m/s. The solar power generation device comprises a solar cell module and a solar controller, converts solar energy into electric energy, performs maximum power tracking and outputs maximum power. The peak power of the power generation device is 300W, the peak voltage is 36V, the open-circuit voltage is 43.2V, the peak current is 8.33A, and the short-circuit current is 9.17A. The power supply controller converts and controls the wind power generation power and the solar power generation power and controls the output charging power, and the output charging power comprises 3 paths of input, 2 paths of output and 1 path of communication bus, the output bus voltage is 24V-33.6V, the rated power is 1000W, and the maximum power is 1200W. The energy storage lithium battery pack is used for storing electricity obtained from the ground, wind energy and solar energy and supplying power to other devices of the tethered ball.
According to the embodiment of the invention, natural conditions rich in wind resources under high-altitude conditions are effectively utilized by the vertical axis wind power generation device, the wind power drives the blades of the wind turbine to rotate, and the rotating speed is increased by driving the gear rotating mechanism to promote the generator to generate power.
On the basis of the above embodiment, the ground power supply device specifically includes: AC booster, step-down transformer and AC/DC converter
The alternating current booster is electrically connected with a ground commercial power alternating current 220V power transmission line and a high-voltage power transmission line respectively, the alternating current booster is electrically connected with the high-voltage power transmission line, and the AC/DC converter is electrically connected with the power supply controller and the voltage reducer respectively.
Specifically, the AC/DC described in the embodiment of the present invention includes 2 inputs, 1 input from the step-down transformer output, and 1 input from the ground 220V commercial power, and the input voltages are both AC220V/50Hz, and are mainly used for step-down of ground power transmission and conversion into direct current power supply.
The ground power supply device described in the embodiment of the invention is connected with the alternating current booster and the ground commercial power alternating current 220V power transmission line through the mooring cable, so that the power supply guaranteed from the ground is obtained, and the power supply guaranteed for mooring the mooring ball is provided under the condition that the solar cell and the vertical axis wind power generation device cannot provide enough electric quantity.
On the basis of the embodiment, the lithium battery pack is formed by connecting 8 battery submodules in series, wherein each electronic module is formed by connecting 35 ternary lithium battery cells in parallel.
Specifically, the nominal voltage of each ternary lithium battery is 28.8V, and the energy is 2000 wh.
The lithium battery pack described in the embodiment of the invention can ensure the continuous supply of a power system and is beneficial to long-term air parking of a tethered ball.
Fig. 2 is a schematic structural diagram of a captive ball according to an embodiment of the present invention, as shown in fig. 2, including: a captive balloon, a first dc cable 7, a second dc cable 8, a third dc cable 9, a fourth dc cable 10, and a tether 6.
The solar cell 5 is fixed above the captive balloon, the vertical axis wind power generation device 2 is vertically arranged at the bottom of the captive balloon, the ground power supply device, the power controller 3, the lithium battery pack 4, the CAN bus and the load device are all arranged inside the captive balloon, the ground power supply device comprises a voltage reducer 1 and an AC/DC converter 11, and the voltage reducer 1 is electrically connected with the input of the AC/DC converter 11 through an alternating current power transmission line 12.
The mooring line 6 is electrically connected with the voltage reducer 1 in the ground power supply device, the AC/DC converter 11 in the ground power supply device is electrically connected with the power controller 3 through the first direct current cable 7, the vertical axis wind power generation device 2 is electrically connected with the power controller 3 through the second direct current cable 8, the solar battery 5 is electrically connected with the power controller 3 through the third direct current cable 9, and the lithium battery 4 is electrically connected with the power controller 3 through the fourth direct current cable 10.
The solar cell 5 described in the embodiments of the present invention is supported by flanges and fixed to the top of the captive balloon.
The vertical axis wind power generation device 2 described in the embodiment of the invention is vertically arranged at the bottom of the captive balloon, and the depth of the vertical axis wind power generation device exceeds the bottom surface of the captive balloon.
According to the embodiment of the invention, the solar cell is added, the condition of high-altitude solar illumination intensity is fully utilized, a certain generating capacity is generated by the solar cell, and meanwhile, the vertical axis wind power generation device is added aiming at the characteristics of high-altitude wind speed, wide wind distribution and high wind stability, so that high-altitude wind energy and solar energy are effectively utilized, more electric quantity is generated, and redundant electric quantity is stored in the lithium battery pack on the premise of meeting the load of the mooring ball, so that the dependence of a mooring ball power supply system on ground power is reduced as much as possible, and reliable energy guarantee is provided for long-term mooring of the mooring ball.
Fig. 3 is a schematic flow chart of a tethered ball energy control method according to an embodiment of the present invention, as shown in fig. 3, including:
step S1, acquiring captive balloon working mode information through the CAN bus, and acquiring load power information according to the load device;
and step S2, performing power supply adjustment on the solar cell, the vertical axis wind power generation device and the ground power supply device according to the captive balloon working mode information and the load power information.
Specifically, the CAN bus described in the embodiment of the present invention is connected to a communication interface of the captive balloon flight control system to obtain the operating mode information of the captive balloon.
The load power information obtained by the load device described in the embodiment of the present invention refers to the load of other devices in the tethered retained ball.
The tethered balloon operating mode information described in the embodiments of the present invention specifically includes: the anchoring state information and the non-anchoring state information are used for preferentially charging the lithium battery pack without using the power supply of the lithium battery pack while meeting the load power in the anchoring state. The captive ball is in a raised, lowered or parked state:
in the non-anchoring state, the load power is preferably met, solar power generation, wind power generation and a lithium battery pack are used as power supply sources as much as possible, and ground power supply is used or not used as much as possible.
According to the embodiment of the invention, energy generated by ground power supply, wind power generation and solar power generation and stored energy of the lithium battery pack are subjected to power conversion and distribution through the operating mode information and the load power information of the captive ball, so that the energy is used by a captive ball load, the lithium battery pack can be charged, and reliable energy guarantee is provided for long-term vacancy staying of the captive ball.
On the basis of the above embodiment, the captive balloon operating mode information specifically includes: mooring state information and non-mooring state information.
Specifically, the non-anchored state information specifically includes a rising, falling, or standing by air state.
On the basis of the above embodiment, if the CAN bus acquires that the captive balloon operating mode information is the mooring state information, correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the first power generation power information is larger than the load power information;
comparing the sum of the load power information and the maximum charging power of the lithium battery pack with first power generation power information;
when the sum of the load power information and the maximum charging power of the lithium battery pack is smaller than the first generating power information and the sum of the generating power of the solar battery and the power of the vertical axis wind power generation device can meet the load, the lithium battery pack is stopped to be charged through the ground power supply device, and the lithium battery pack is charged only through the solar battery and the vertical axis wind power generation device.
The maximum power generation power information of the solar cell and the maximum power generation power information of the vertical axis wind power generation device described in the embodiment of the invention can be obtained through the solar cell and the vertical axis wind power generation device respectively;
setting the load power to PlThe power generated by the solar cell is PpThe wind power generation power is PwThe ground power supply is Pg, and the maximum power generated by the solar cell is PpmaxThe maximum power of wind power generation is PwmaxThe charging power of the lithium battery is Pcb,The discharge power of the lithium battery is PdbThe maximum charging power of the lithium battery is Pcbmax,The discharge power of the lithium battery is Pdbmax。
And in the anchoring state information state, the load power is met, and meanwhile, the lithium battery pack is not used for supplying power, and the lithium battery pack is charged preferentially.
When P is presentl＜Ppmax+PwmaxIf P ispmax+Pwmax＞Pl+PcbmaxAnd the power supply controller is in a non-MPPT mode for solar power generation and wind power generation at the moment, Pp+Pw<Ppmax+PwmaxAnd satisfy Pp+Pw＝Pl+PcbmaxInput power P of ground supplyg＝0w。
Also includes if Ppmax+Pwmax<Pl+PcbmaxAnd the power supply controller is in the MPPT mode for solar power generation and wind power generation at the momentp＝Ppmax，Pw＝PwmaxAnd satisfy Pp+Pw+Pg＝Pl+Pcbmax。
If the first generating power information is less than or equal to the load power information, the power controller generates solar power and wind power at the momentThe power generation is in MPPT mode, Pp＝Ppmax，Pw＝Pwmax. And deriving power P from the ground supplygSatisfy Pp+Pw+Pg＝P1+PcbmaxAnd the lithium battery pack is charged with the maximum power while the load power requirement is ensured.
According to the embodiment of the invention, the lithium battery pack is not used for supplying power while the load power is satisfied, and the lithium battery pack is charged preferentially, so that reliable energy guarantee is provided for long-time vacancy staying of the mooring ball.
On the basis of the above embodiment, if the information of the working mode of the captive balloon obtained by the CAN bus is the non-mooring state information, correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the load power information is larger than or equal to the first generating power information, acquiring the maximum discharging power of the lithium battery pack;
and if the sum of the maximum discharge power and the first generating power information of the lithium battery pack is greater than or equal to the load power information and the sum of the generating power of the solar battery and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
If the load power information is smaller than the first power generation power information, acquiring the maximum discharge power of the lithium battery pack;
and if the sum of the load power information and the maximum discharge power of the lithium battery pack is greater than the first generating power information and the sum of the solar battery generating power and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
Specifically, when the load power information is greater than or equal to the first power generation power information, the power supply controller is used for the solar energyThe power generation and the wind power generation are in an MPPT mode, Pp＝Ppmax，Pw＝Pwmax. And deriving discharge power P from the lithium battery packdmaxIf P isl>Ppmax+Pwmax+PdbmaxThen power P needs to be taken from the groundg，PgIs greater than 0 w. Satisfy Ppmax+Pwmax+Pdbmax+Pg＝Pl. If Pl≤
Ppmax+Pwmax+PdbmaxThen P ispmax+Pwmax+Pdb＝Pl。Pdb≤Pdbmax，PgAnd (5) stopping charging the lithium battery pack through the ground power supply device, and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
If the load power information is less than the first power generation power information, if Ppmax+Pwmax＞
Pl+PcbmaxAnd P isp+Pw<Ppmax+PwmaxSatisfy Pp+Pw＝Pl+PcbmaxInput power P of ground supplyg＝0w。
If Ppmax+Pwmax<Pl+PcbmaxAnd the power supply controller is in the MPPT mode for solar power generation and wind power generation at the momentp＝Ppmax，Pw＝PwmaxAnd the charging power of the lithium battery pack is less than PcbmaxAnd satisfy Pp+Pw＝Pl+PcbInput power P of ground supplyg＝0w。
According to the embodiment of the invention, energy generated by ground power supply, wind power generation and solar power generation and stored energy of the lithium battery pack are subjected to power conversion and distribution through the operating mode information and the load power information of the captive ball, so that the energy is used by a captive ball load, the lithium battery pack can be charged, and reliable energy guarantee is provided for long-term vacancy staying of the captive ball.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A mooring ball energy system comprises a load device and is characterized by further comprising: the system comprises a solar cell, a vertical axis wind power generation device, a ground power supply device, a power supply controller, a CAN bus and a lithium battery pack;
the vertical axis wind power generation device is electrically connected with a power supply controller, the solar cell is electrically connected with the power supply controller, and the ground power supply device is electrically connected with the power supply controller;
the lithium battery pack and the load device are respectively electrically connected with the power supply controller, and the CAN bus is electrically connected with the power supply controller;
the CAN bus acquires the working mode information of the captive balloon, the power supply controller acquires the load power information from the load device, and the solar battery, the vertical axis wind power generation device and the ground power supply device are supplied with power and adjusted according to the working mode information of the captive balloon and the load power information.
2. The mooring ball energy system of claim 1, wherein the vertical axis wind turbine specifically comprises: a wind turbine, a generator, a gear drive, a tower and a rectifier;
the wind turbine is arranged on a gear transmission mechanism, the gear transmission mechanism is connected with the generator, the rectifier is electrically connected with the generator, and the rectifier is electrically connected with the power controller;
wherein the tower is used for fixing the transmission mechanism.
3. The system of claim 1, wherein the lithium battery pack is composed of 8 battery submodules connected in series, wherein each electronic module is composed of 35 ternary lithium battery cells connected in parallel.
4. A tethered ball based on the tethered ball energy system of any of claims 1-3 comprising a tethered balloon, wherein said tethered ball further comprises a first dc cable, a second dc cable, a third dc cable, a fourth dc cable, and a tether;
the solar cell is fixed above the captive balloon, the vertical axis wind power generation device is vertically arranged at the bottom of the captive balloon, and the ground power supply device, the power supply controller, the lithium battery pack, the CAN bus and the load device are all arranged inside the captive balloon;
the mooring line is electrically connected with the ground power supply device, the ground power supply device is electrically connected with the power controller through a first direct current cable, the vertical axis wind power generation device is electrically connected with the power controller through a second direct current cable, the solar cell is electrically connected with the power controller through a third direct current cable, and the lithium cell is electrically connected with the power controller through a fourth direct current cable.
5. A tethered ball energy control method based on the tethered ball energy system of any of claims 1-3, comprising:
acquiring the working mode information of the captive balloon through the CAN bus, and acquiring load power information according to the load device;
and power supply adjustment is carried out on the power generation power of the solar cell, the vertical axis wind power generation device and the ground power supply device according to the captive balloon working mode information and the load power information.
6. The captive balloon energy control method of claim 5, wherein the captive balloon operating mode information includes: mooring state information and non-mooring state information.
7. The captive balloon energy control method of claim 6, wherein if the operating mode information of the captive balloon obtained by the CAN bus is the mooring state information, then correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the first power generation power information is larger than the load power information;
comparing the sum of the load power information and the maximum charging power of the lithium battery pack with the first power generation power information;
and when the sum of the load power information and the maximum charging power of the lithium battery pack is smaller than the first generating power information and the sum of the solar battery generating power and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
8. The captive balloon energy control method of claim 6, wherein if the operating mode information of the captive balloon obtained by the CAN bus is the mooring state information, then correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the first generating power information is less than or equal to the load power information; and the sum of the power generation power of the solar cell, the power generation power of the vertical axis wind power generation device and the power generation power of the ground power supply device is equal to the sum of the load power information and the maximum charging power of the lithium battery pack, so that the lithium battery pack is charged under the condition of meeting the load.
9. The captive balloon energy control method of claim 7, wherein if the operating mode information of the captive balloon obtained by the CAN bus is non-mooring state information, then correspondingly:
acquiring maximum generating power information of a solar cell and maximum generating power information of a vertical axis wind power generation device to obtain first generating power information;
if the load power information is larger than or equal to the first generating power information, acquiring the maximum discharging power of the lithium battery pack;
and if the sum of the maximum discharge power and the first generating power information of the lithium battery pack is greater than or equal to the load power information and the sum of the generating power of the solar battery and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
10. The captive ball energy control method of claim 9, further comprising:
if the load power information is smaller than the first power generation power information, acquiring the maximum discharge power of the lithium battery pack;
and if the sum of the load power information and the maximum discharge power of the lithium battery pack is greater than the first generating power information and the sum of the solar battery generating power and the power of the vertical axis wind power generation device can meet the load, stopping charging the lithium battery pack through the ground power supply device and charging the lithium battery pack only through the solar battery and the vertical axis wind power generation device.
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| CN114552751A (en) * | 2022-01-21 | 2022-05-27 | 北京航空航天大学 | Energy power supply system suitable for mooring airship and mooring airship |
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