CN115711201A - Wind power generation energy storage system, wind power generator and wind power generation energy storage control method - Google Patents
Wind power generation energy storage system, wind power generator and wind power generation energy storage control method Download PDFInfo
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- CN115711201A CN115711201A CN202211518933.0A CN202211518933A CN115711201A CN 115711201 A CN115711201 A CN 115711201A CN 202211518933 A CN202211518933 A CN 202211518933A CN 115711201 A CN115711201 A CN 115711201A
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention relates to the technical field of wind driven generators, in particular to a wind power generation energy storage system, a wind driven generator and a wind power generation energy storage control method. Wind power generation energy storage system includes: a first drive shaft; the main shaft is connected with the first transmission shaft through a first clutch; the first energy storage part is in transmission fit with the first transmission shaft; and the second energy storage part is in transmission fit with the first transmission shaft. According to the wind driven generator, the main shaft drives the first transmission shaft to rotate during normal power generation, the first energy storage part and the second energy storage part are in transmission fit with the first transmission shaft and store energy, when the external wind power is small or the wind power is too large, the main shaft is disconnected from the first transmission shaft, the first energy storage part and the second energy storage part can adjust the potential energy sequence and drive the first transmission shaft to rotate, the energy utilization rate is higher, the generator can keep normal operation, the non-stop operation can be continuously realized during the power generation process, the wind driven generator can operate more stably, and the problems that the energy storage structure of wind power generation equipment in the prior art is complex and the reliability is poor are effectively solved.
Description
Technical Field
The invention relates to the technical field of wind driven generators, in particular to a wind power generation energy storage system, a wind driven generator and a wind power generation energy storage control method.
Background
Wind power generation equipment is power equipment which converts wind energy into mechanical energy, converts the mechanical energy into electric energy and outputs alternating current, is mainly arranged in coastal and plateau areas with much wind, and the like, and is connected with a power grid at a power output end.
At present, the existing wind power generation equipment generally stores standby electric energy through a storage battery, the storage battery discharges electricity to ensure that the wind power generation equipment can continuously supply power in the absence of wind, and the large-scale wind power generation equipment has large capacity due to large generating capacity of the storage battery, so that the wind power generation equipment is high in cost and difficult to maintain, and meanwhile, the situation that power is insufficient and power cannot be generated can still exist in the absence of wind, so that the existing wind power generation equipment also has the problems of complex energy storage structure and poor reliability.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects of complex energy storage structure and poor reliability of the wind power generation equipment in the prior art, so as to provide a wind power generation energy storage system, a wind power generator and a wind power generation energy storage control method.
In order to solve the above problem, the present invention provides a wind power generation energy storage system, comprising: the first transmission shaft is suitable for driving a generator of the wind driven generator to generate electricity; the main shaft is suitable for being driven by blades of the wind driven generator to rotate and transmit power, the main shaft is connected with the first transmission shaft through a first clutch, the first clutch has a combination state and a disconnection state, when the first clutch is in the combination state, the main shaft and the first transmission shaft are in a power transmission state, and when the first clutch is in the disconnection state, the main shaft and the first transmission shaft are in a power non-transmission state; the first energy storage part is in transmission fit with the first transmission shaft and has an energy storage state and an energy release state; the second energy storage part is in transmission fit with the first transmission shaft and has an energy storage state and an energy release state; the maximum storage energy of the first energy storage part is greater than that of the second energy storage part; when the wind speed of the external environment is within a first preset wind speed range and/or the rotating speed of the main shaft is within a first preset rotating speed range, the first clutch is in a combined state, and the second energy storage part is in an energy storage state; when the wind speed of the external environment is within a second preset wind speed range and/or the rotating speed of the main shaft is within a second preset rotating speed range, the first clutch is in a combined state, and the first energy storage part is in an energy storage state; the maximum value of the first preset wind speed range is less than or equal to the minimum value of the second preset wind speed range, and the maximum value of the first preset rotating speed range is less than or equal to the minimum value of the second preset rotating speed range; when the external wind speed is out of a first preset wind speed range and a second preset wind speed range and/or the rotating speed of the main shaft is out of the first preset rotating speed range and the second preset rotating speed range, the first energy storage part and/or the second energy storage part are/is in an energy release state when the first clutch is in a disconnected state.
Optionally, the wind power generation energy storage system further includes: and the controller is electrically connected with the first clutch and controls the first clutch to be switched between the combined state and the disconnected state.
Optionally, the wind power generation energy storage system further comprises a wind speed sensor, the wind speed sensor is suitable for detecting the wind speed of the external environment, the controller is electrically connected with the wind speed sensor, and the controller controls the first clutch to switch between the connection state and the disconnection state according to the wind speed detected by the wind speed sensor; and/or the wind power generation energy storage system further comprises a speed sensor, the speed sensor is suitable for detecting the rotating speed of the main shaft, the controller is electrically connected with the speed sensor, and the controller controls the first clutch to be switched between the connection state and the disconnection state according to the rotating speed detected by the speed sensor.
Optionally, when the wind speed is less than the minimum value of the first preset wind speed range and/or the rotating speed is less than the minimum value of the first preset rotating speed range, the energy releasing priority of the second energy storing part is higher than the energy releasing priority of the first energy storing part; when the wind speed is larger than the maximum value of the second preset wind speed range and/or the rotating speed is larger than the maximum value of the second preset rotating speed range, the energy releasing priority of the first energy storing part is higher than that of the second energy storing part.
Optionally, the wind power generation energy storage system further includes: the second transmission shaft is connected with the first transmission shaft through a first transmission mechanism, and the transmission ratio of the first transmission shaft to the second transmission shaft is less than or equal to 1; and the second clutch is connected with the first energy storage part and the second transmission shaft respectively, has a combination state and a disconnection state, and is in a power transmission state between the first transmission shaft and the first energy storage part when the second clutch is in the combination state, and is in a power transmission disabled state between the first transmission shaft and the first energy storage part when the second clutch is in the disconnection state.
Optionally, the wind power generation energy storage system further includes: the third transmission shaft is connected with the first transmission shaft through a second transmission mechanism, and the transmission ratio of the first transmission shaft to the third transmission shaft is greater than 1; and the third clutch is connected between the third transmission shaft and the second energy storage part, has a combination state and a disconnection state, is in a power transmission state between the first transmission shaft and the second energy storage part when being in the combination state, and is in a power non-transmission state between the first transmission shaft and the second energy storage part when being in the disconnection state.
The present invention also provides a wind power generator, comprising: the generator is driven by a first transmission shaft of the wind power generation energy storage system to generate electricity, and the blades drive a main shaft of the wind power generation energy storage system to rotate.
The invention also provides a wind power generation energy storage control method, which comprises the following steps: acquiring the wind speed of the external environment and/or the rotating speed of the main shaft; and controlling the state of the first clutch and the states of the first energy storage part and the second energy storage part according to the wind speed and/or the rotating speed.
Optionally, the step of controlling the state of the first clutch, the state of the first energy storage part and the state of the second energy storage part according to the wind speed or the rotation speed comprises: judging whether the wind speed is within a first preset wind speed range and/or whether the rotating speed is within a first preset rotating speed range; when the wind speed is within a first preset wind speed range and/or the rotating speed is within a first preset rotating speed range, the first clutch is controlled to be combined, and the second energy storage part stores energy; when the wind speed is out of a first preset wind speed range and/or the rotating speed is out of a first preset rotating speed range, judging whether the wind speed is in a second preset wind speed range and/or the rotating speed is in a second preset rotating speed range; when the wind speed is within a second preset wind speed range and/or the rotating speed is within a second preset rotating speed range, the first clutch is in a combined state, and the first energy storage part is in an energy storage state; when the wind speed is out of a first preset wind speed range and a second preset wind speed range and/or the rotating speed is out of a first preset rotating speed range and a second preset rotating speed range, the first clutch is controlled to be disconnected, and the first energy storage part and/or the second energy storage part release energy.
Optionally, when the wind speed is outside the first preset wind speed range and the second preset wind speed range and/or the rotating speed is outside the first preset rotating speed range and the second preset rotating speed range, the step of controlling the first clutch to be in the off state, and the step of controlling the first energy storage part and/or the second energy storage part to be in the energy release state includes: when the wind speed is smaller than the minimum value of the first preset wind speed range or the rotating speed is smaller than the minimum value of the first preset rotating speed range, the energy releasing priority of the second energy storing part is higher than that of the first energy storing part; when the wind speed is larger than the maximum value of the second preset wind speed range or the rotating speed is larger than the maximum value of the second preset rotating speed range, the energy releasing priority of the first energy storing part is higher than that of the second energy storing part.
SY224575CN
The invention has the following advantages:
1. in at least one embodiment, a first clutch is arranged between a first transmission shaft and a main shaft, the main shaft drives the first transmission shaft to rotate during normal power generation, a first energy storage part and a second energy storage part are in transmission fit with the first transmission shaft and store energy, when external wind power is small or the wind power is too large, the first clutch is in a disconnected state, the main shaft is disconnected from the first transmission shaft, the first energy storage part and the second energy storage part can adjust potential energy sequence according to external wind speed change and drive the first transmission shaft to rotate, the first transmission shaft can continuously rotate while the energy utilization rate is higher, the generator can still run in a wind-free condition, the power generation process can continuously run without stopping, the wind generator runs more stably and has no loss, the problems that the energy storage structure of wind power generation equipment in the prior art is complex and the reliability is poor are effectively solved, and the influence of the wind power generation equipment on the operation of a power grid when no wind exists or the wind power is small is effectively reduced.
2. In at least one embodiment, the first preset value is a lowest wind speed at which the generator can normally operate, the second preset value is a highest wind speed at which the generator can normally operate, and the controller can control the state of the first clutch according to the wind speed measured by the wind speed sensor, so that the wind power generator can maintain a normal working state, the wind power generator can continuously generate power in a windless state, and meanwhile the wind power generator can be prevented from being damaged due to an excessively high rotating speed.
3. In at least one embodiment, the first transmission mechanism is a first gear transmission mechanism, the gear meshing transmission structure is more reliable, gear meshing is not easy to damage in the long-time transmission process of the first transmission shaft and the second transmission shaft, and the service life is longer.
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 other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 shows a schematic structural diagram of a wind power generation energy storage system according to an embodiment of the invention.
Description of reference numerals:
10. a generator; 11. a first drive shaft; 111. a first drive gear; 112. a second transmission gear; 12. a blade; 13. a main shaft; 14. a second drive shaft; 141. a first mating gear; 15. a third transmission shaft; 151. a second mating gear; 20. a first clutch; 31. a first spring energy storage unit; 32. a first locking structure; 40. a second clutch; 51. a second spring energy storage unit; 52. a second locking structure; 60. a third clutch; 71. a wind speed sensor; 72. a controller; 73. a speed sensor; 80. a housing.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the wind power generation and energy storage system of the present embodiment includes: the wind driven generator comprises a first transmission shaft 11, a main shaft 13, a first energy storage part and a second energy storage part, wherein the first transmission shaft 11 is suitable for driving a generator 10 of the wind driven generator to generate electricity; the main shaft 13 is suitable for being driven by blades 12 of the wind driven generator to rotate and transmit power, the main shaft 13 is connected with the first transmission shaft 11 through a first clutch 20, the first clutch 20 has a connection state and a disconnection state, when the first clutch 20 is in the connection state, the main shaft 13 and the first transmission shaft 11 are in a power transmission state, and when the first clutch 20 is in the disconnection state, the main shaft 13 and the first transmission shaft 11 are in a power non-transmission state; the first energy storage part is in transmission fit with the first transmission shaft 11 and has an energy storage state and an energy release state; the second energy storage part is in transmission fit with the first transmission shaft 11 and has an energy storage state and an energy release state; the maximum stored energy of the first energy storage part is greater than that of the second energy storage part; when the wind speed of the external environment is within a first preset wind speed range and/or the rotating speed of the main shaft 13 is within a first preset rotating speed range, the first clutch 20 is in a combined state, and the second energy storage part is in an energy storage state; when the wind speed of the external environment is within a second preset wind speed range and/or the rotating speed of the main shaft 13 is within a second preset rotating speed range, the first clutch 20 is in a combined state, and the first energy storage part is in an energy storage state; the maximum value of the first preset wind speed range is less than or equal to the minimum value of the second preset wind speed range, and the maximum value of the first preset rotating speed range is less than or equal to the minimum value of the second preset rotating speed range; when the external wind speed is out of the first preset wind speed range and the second preset wind speed range and/or the rotating speed of the main shaft 13 is out of the first preset rotating speed range and the second preset rotating speed range, and the first clutch 20 is in a disconnected state, the first energy storage part and/or the second energy storage part are in an energy release state.
By applying the wind power generation energy storage system of the embodiment, the first clutch 20 is arranged between the first transmission shaft 11 and the main shaft 13, the main shaft 13 drives the first transmission shaft 11 to rotate during normal power generation, and the first energy storage part and the second energy storage part are in transmission fit with the first transmission shaft 11 at different wind speeds and/or rotating speeds of the main shaft 13 and store energy, so that energy storage under different scenes is realized; when the external wind power is small or the wind power is too large, the first clutch 20 is in a disconnected state, the main shaft 13 is disconnected from the first transmission shaft 11, at least one of the first energy storage part and the second energy storage part drives the first transmission shaft 11 to rotate, the generator 10 can still generate power and operate under the condition of no wind, the power generation process can continuously realize non-stop operation, the wind driven generator can operate more stably and has no loss, the problems of complex energy storage structure and poor reliability of wind power generation equipment in the prior art are effectively solved, and the influence of the wind power generation equipment on the operation of a power grid under the condition of no wind or small wind power is effectively reduced.
Specifically, the wind driven generator further comprises a gearbox, the first transmission shaft 11 is an input shaft or an output shaft of the gearbox, when the first transmission shaft 11 is the output shaft of the gearbox, the first transmission shaft 11 is connected with the input shaft of the generator 10 through a coupler, and the input shaft of the gearbox is connected with the main shaft 13 through a first clutch 20; when the first transmission shaft 11 is an input shaft of a gearbox, an output shaft of the gearbox is connected with an input shaft of the generator 10 through a coupling. A hub is arranged on the main shaft 13, and blades 12 of the wind driven generator are fixedly connected with the hub so as to drive the main shaft 13 to rotate.
In at least one embodiment, the wind power generation energy storage system further comprises a controller 72, the controller 72 is electrically connected with the first clutch 20, and the controller 72 controls the first clutch 20 to switch between the connection state and the disconnection state, so that the control is sensitive and the response is rapid.
In at least one embodiment, the wind power generation energy storage system further comprises a wind speed sensor 71, the wind speed sensor 71 is adapted to detect the wind speed of the external environment, the controller 72 is electrically connected to the wind speed sensor 71, and the controller 72 controls the first clutch 20 to switch between the engaged state and the disengaged state according to the wind speed detected by the wind speed sensor 71. The wind power energy storage system further comprises a speed sensor 73, the speed sensor 73 is adapted to detect the rotation speed of the main shaft 13, the controller 72 is electrically connected with the speed sensor 73, and the controller 72 controls the first clutch 20 to switch between the engaged state and the disengaged state according to the rotation speed detected by the speed sensor 73. At least one of the external wind speed and the rotation speed of the main shaft 13 can be used as a judgment basis, and the controller 72 automatically controls the state of the first clutch 20 according to the signals fed back by the wind speed sensor 71 and/or the speed sensor 73, so that the control process is more intelligent.
In at least one embodiment, when the wind speed is less than the minimum value of the first preset wind speed range and/or the rotating speed is less than the minimum value of the first preset rotating speed range, the energy releasing priority of the second energy storing part is higher than that of the first energy storing part; when the wind speed is greater than the maximum value of the second preset wind speed range and/or the rotating speed is greater than the maximum value of the second preset rotating speed range, the energy releasing priority of the first energy storing part is higher than that of the second energy storing part, so that the wind driven generator can maintain a normal working state, the wind driven generator can continuously generate electricity in a windless state, and meanwhile, the wind driven generator can be prevented from being damaged due to the fact that the rotating speed is too fast. The minimum value of the preset wind speed range is the lowest wind speed at which the generator 10 can normally operate, the maximum value of the preset wind speed range is the highest wind speed at which the generator 10 can normally operate, the minimum value of the preset rotating speed range is the lowest rotating speed at which the generator 10 can normally operate, and the maximum value of the preset rotating speed range is the maximum rotating speed which the generator 10 can bear. Potential energy sequence is adjusted according to external wind speed change, and energy utilization rate is higher. For example, the minimum value of the first predetermined wind speed range is 3m/s, the maximum value of the first predetermined wind speed range is 10m/s, i.e., the first predetermined wind speed range is 3m/s to 10m/s, the minimum value of the second predetermined wind speed range is 10m/s, and the maximum value of the second predetermined wind speed range is 20m/s, i.e., the first predetermined wind speed range is 10m/s to 20m/s. It is to be understood that the first and second preset wind speed ranges need to be determined according to the power of the wind turbine, and are not limited thereto.
It should be noted that, the larger the wind speed is, the higher the rotation speed of the main shaft 13 is, the smaller the wind speed is, the lower the rotation speed of the main shaft 13 is, and the wind speed and the rotation speed of the main shaft 13 have a one-to-one correspondence, which may be implemented in the prior art, and details are not described herein again.
Specifically, the elastic potential energy stored in the first energy storage portion is relatively large, the elastic potential energy stored in the second energy storage portion is relatively small, when the wind speed is smaller than the minimum value of the first preset wind speed range and/or the rotating speed is smaller than the minimum value of the first preset rotating speed range, at this time, the rotating speed of the first transmission shaft 11 is relatively low, at this time, the second energy storage portion releases energy after releasing the first energy storage portion first, so that the rotating speed of the first transmission shaft 11 gradually changes from slow to fast, and the rotating speed fluctuation of the first transmission shaft 11 is reduced, meanwhile, if the external wind speed condition is restored to the normal generating wind speed of the generator 10 at this time when the second energy storage portion releases energy, at this time, the first clutch 20 becomes a combined state, the main shaft 13 and the first transmission shaft 11 can still be combined with a relatively low rotating speed difference, and the impact on the first clutch 20 is reduced. When the wind speed is greater than the maximum value of the second preset wind speed range and/or the rotating speed is greater than the maximum value of the second preset rotating speed range, at this time, the rotating speed of the first transmission shaft 11 is higher, at this time, the first energy storage part releases energy after releasing the second energy storage part, so that the rotating speed of the first transmission shaft 11 is changed from fast to slow, the rotating speed fluctuation of the main shaft 13 is reduced, meanwhile, if the external wind speed condition is recovered to the normal generating wind speed of the generator 10 when the first energy storage part releases energy, at this time, the first clutch 20 is changed into a combined state, the main shaft 13 and the first transmission shaft 11 can be combined with a lower rotating speed difference, and the impact on the first clutch 20 is reduced. It is understood that, as an alternative embodiment, when the wind speed is less than the minimum value of the first preset wind speed range and/or the rotating speed is less than the minimum value of the first preset rotating speed range, the first energy storage part and the second energy storage part can release energy at the same time, or the energy release priority of the first energy storage part is higher than that of the second energy storage part; when the wind speed is larger than the maximum value of the second preset wind speed range and/or the rotating speed is larger than the maximum value of the second preset rotating speed range, the first energy storage part and the second energy storage part can release energy at the same time, or the energy release priority of the second energy storage part is higher than that of the first energy storage part.
It should be noted that after the energy stored in the second energy storage portion is released or during the release process, the external wind speed condition is restored to the normal generating wind speed of the generator 10, and at this time, the first energy storage portion is not needed to release energy; after the energy stored in the first energy storage part is released or in the process of releasing the energy, the external wind speed condition is restored to the normal generating wind speed of the generator 10, and at this time, the second energy storage part is not needed to release the energy.
In at least one embodiment, the wind power generation energy storage system further comprises a second transmission shaft 14 and a second clutch 40, the second transmission shaft 14 is connected with the first transmission shaft 11 through a first transmission mechanism, and the transmission ratio of the first transmission shaft 11 to the second transmission shaft 14 is less than or equal to 1; the second clutch 40 is connected to the first energy storage unit and the second transmission shaft 14, the second clutch 40 has a connection state and a disconnection state, when the second clutch 40 is in the connection state, the power transmission state is between the first transmission shaft 11 and the first energy storage unit, and when the second clutch 40 is in the disconnection state, the power transmission state is between the first transmission shaft 11 and the first energy storage unit. The controller 72 controls the state of the second clutch 40 according to the signal fed back by the wind speed sensor 71 and/or the speed sensor 73, so that the control process is more intelligent and precise.
In at least one embodiment, the second clutch 40 is connected between the first energy storage portion and the second transmission shaft 14, and the structure is simple and reliable.
In at least one embodiment, the wind power generation energy storage system further comprises a third transmission shaft 15 and a third clutch 60, the third transmission shaft 15 is connected with the first transmission shaft 11 through a second transmission mechanism, and the transmission ratio of the first transmission shaft 11 to the third transmission shaft 15 is greater than 1; the third clutch 60 is connected between the third transmission shaft 15 and the second energy storage unit, the third clutch 60 has a connected state and a disconnected state, when the third clutch 60 is in the connected state, the first transmission shaft 11 and the second energy storage unit are in a power transmittable state, and when the third clutch 60 is in the disconnected state, the first transmission shaft 11 and the second energy storage unit are in a power non-transmittable state. The controller 72 controls the state of the third clutch 60 according to the signals fed back by the wind speed sensor 71 and/or the speed sensor 73, so that the control process is more intelligent and precise.
In at least one embodiment, the third clutch 60 is connected between the third transmission shaft 15 and the second energy storage portion, and the structure is simple and reliable.
Specifically, the second clutch 40 is electrically connected to the controller 72, the second transmission shaft 14 is disposed at one side of the first transmission shaft 11, the third clutch 60 is electrically connected to the controller 72, the third transmission shaft 15 is disposed at one side of the first transmission shaft 11, the third transmission shaft 15 may be disposed at one side of the cylinder with the second transmission shaft 14, or may be disposed at an opposite side of the second transmission shaft 14, the elastic energy stored in the second energy storage portion is relatively small, energy is stored mainly when the rotation speed of the first transmission shaft 11 is relatively low, a transmission ratio between the first transmission shaft 11 and the third transmission shaft 15 is greater than 1, torque can be increased when the rotation speed of the first transmission shaft 11 is relatively low, so that the second energy storage portion can still store energy, and also the second energy storage portion can maintain a certain rotation speed of the first transmission shaft 11 when outputting energy, the elastic energy stored in the first energy storage portion is relatively large, energy is stored mainly when the rotation speed of the first transmission shaft 11 is relatively high, a transmission ratio between the first transmission shaft 11 and the third transmission shaft 15 is less than or equal to 1, when the rotation speed of the first transmission shaft 11 is relatively high, the first clutch 20 can still operate to prevent the power generation efficiency from being reduced when the first transmission shaft 11 is high.
In at least one embodiment, the first energy storage portion includes a first energy storage shaft and a plurality of first spring energy storage units 31, the plurality of first spring energy storage units 31 are disposed on the first energy storage shaft, the first energy storage shaft is connected to the second transmission shaft 14 through the second clutch 40, the first energy storage shaft is driven by the second transmission shaft 14 to rotate, and the plurality of first spring energy storage units 31 store energy at this time.
Specifically, the quantity of first spring energy storage unit 31 is not restricted, can change according to the environment that aerogenerator used, every first spring energy storage unit 31 includes clockwork spring and pull rod, the material of clockwork spring is the metal, the clockwork spring cover is established on first energy storage axle and is driven the clockwork spring through first energy storage axle and rotate and carry out the energy storage, it is taut with the peripheral terminal structure of clockwork spring through the pull rod, the clockwork spring inner wall breaks away from first energy storage axle and fixes alone this moment, when clockwork spring potential energy is saturated, first energy storage axle is connected and rotates with first energy storage axle syntropy to the clockwork spring inner wall, the pull rod also gets back to initial state this moment, wait for the energy storage of next time, first spring energy storage unit 31 adopt the structure among the prior art can, it is no longer detailed repeated here.
In at least one embodiment, the first energy storage portion further includes a first locking structure 32, the first locking structure 32 is disposed on the first energy storage shaft and electrically connected to the controller 72, the first locking structure 32 has a locking state that makes the first energy storage shaft unable to rotate and an unlocking state that makes the first energy storage shaft able to rotate, when the first energy storage portion is full of stored energy or does not need the first energy storage portion to supply energy, the first locking structure 32 is in the locking state, and when the first energy storage portion needs to release energy, the first locking structure 32 is in the unlocking state.
Specifically, the first locking structure 32 is sleeved on the first energy storage shaft, the first locking structure 32 comprises a friction plate and a driving part, the friction plate can swing and is connected to the outer shell through elastic pieces such as springs, the driving part can drive the friction plate to swing, the friction plate is not in contact with the first energy storage shaft in an unlocking state, the first energy storage shaft can rotate freely, and the driving part drives the friction plate to be tightly attached to the first energy storage shaft in a locking state so that the first energy storage shaft cannot rotate. The driving piece is a motor and the like.
In at least one embodiment, the first transmission mechanism is a first gear transmission mechanism, the first gear transmission mechanism includes a first transmission gear 111 and a first matching gear 141, which are engaged with each other, the first transmission gear 111 is disposed on the first transmission shaft 11, the first matching gear 141 is disposed on the second transmission shaft 14, the gear engagement transmission structure is more reliable, gear engagement is not easy to damage in a long-time transmission process of the first transmission shaft 11 and the second transmission shaft 14, and the service life is longer. It will be appreciated that, as an alternative embodiment, the first transmission mechanism may also be in the form of a pulley transmission, a chain transmission or other transmission forms.
In at least one embodiment, the second energy storage portion includes a second energy storage shaft and a plurality of second clockwork spring energy storage units 51, and a plurality of second clockwork spring energy storage units 51 set up on the second energy storage shaft, and the second energy storage shaft passes through third clutch 60 and is connected with third transmission shaft 15, and the second energy storage shaft is rotatory under the drive of third transmission shaft 15, and a plurality of second clockwork spring energy storage units 51 store energy this moment, and the short energy loss that makes of power transmission process is littleer.
Specifically, do not do the restriction to the quantity of second clockwork spring energy storage unit 51, can change according to the environment that aerogenerator used, every second clockwork spring energy storage unit 51 includes clockwork spring and pull rod, the material of clockwork spring is the metal, the clockwork spring cover is established on second energy storage axle and is driven the clockwork spring through second energy storage axle and rotate and carry out the energy storage, it is taut with the peripheral terminal structure of clockwork spring through the pull rod, the clockwork spring inner wall breaks away from second energy storage axle and fixes alone this moment, when clockwork spring potential energy is saturated, the clockwork spring inner wall is connected second energy storage axle and is rotated with second energy storage axle syntropy, the pull rod also gets back to initial state this moment, wait for the energy storage next time, second clockwork spring energy storage unit 51 adopt the structure among the prior art can, it is no longer detailed to describe herein.
In at least one embodiment, the second energy storage portion further includes a second locking structure 52, the second locking structure 52 is disposed on the second energy storage shaft and electrically connected to the controller 72, the second locking structure 52 has a locking state that prevents the second energy storage shaft from rotating and an unlocking state that enables the second energy storage shaft to rotate, when the second energy storage portion is full of stored energy or does not need to be powered by the second energy storage portion, the second locking structure 52 is in the locking state, and when the second energy storage portion needs to be powered off, the second locking structure 52 is in the unlocking state.
Specifically, the second locking structure 52 is sleeved on the second energy storage shaft, the second locking structure 52 comprises a friction plate and a driving piece, the friction plate can be driven by the driving piece to swing, the friction plate is connected to the outer shell through a spring, the friction plate is not in contact with the second energy storage shaft in an unlocking state, the second energy storage shaft can rotate freely, and the friction plate drives the friction plate to cling to the second energy storage shaft in a locking state so that the second energy storage shaft cannot rotate. The driving piece is a motor and the like.
In at least one embodiment, the second transmission mechanism is a second gear transmission mechanism, the second gear mechanism comprises a second transmission gear 112 and a second matching gear 151 which are meshed with each other, the second transmission gear 112 is arranged on the first transmission shaft 11, the second matching gear 151 is arranged on the third transmission shaft 15, the gear meshing transmission structure is more reliable, the first transmission shaft 11 and the third transmission shaft 15 are not easily damaged in a long-time transmission process, and the service life is longer. It will be appreciated that the second transmission mechanism may alternatively be in the form of a pulley transmission, a chain transmission or other transmission.
In at least one embodiment, the wind power generation energy storage system further includes a rotation speed sensor, the rotation speed sensor is disposed at one side of the first transmission shaft 11 and adapted to detect a rotation speed of the first transmission shaft 11 so as to determine whether the first energy storage portion or the second energy storage portion releases all energy at the time, and when the first energy storage portion or the second energy storage portion releases energy, if the rotation speed of the first transmission shaft 11 suddenly drops, it is determined that the first energy storage portion or the second energy storage portion is used up. It is understood that, as an alternative embodiment, a number of turns counter may be provided on one side of the first energy storage shaft and the second energy storage shaft, or a number of turns counter may be provided on one side of the first transmission shaft 11, so as to determine whether all the energy is released through the number of turns of the first transmission shaft 11 or the energy storage shaft.
The present invention also provides a wind power generator, comprising: the wind power generation energy storage system comprises a generator 10, blades 12 and the wind power generation energy storage system, wherein the generator 10 is connected with a first transmission shaft 11 of the wind power generation energy storage system, and the blades 12 are connected with a main shaft 13 of the wind power generation energy storage system.
In at least one embodiment, aerogenerator still includes casing 80, and main shaft 13 wears to establish on casing 80, and first transmission shaft 11, generator 10, first energy storage portion, second energy storage portion all set up inside casing 80, and casing 80 can the inside part of effectual protection, and the transmission distance of first energy storage portion, second energy storage portion is nearer simultaneously, effectively reduces the energy loss among the transmission process.
Specifically, the wind speed sensor 71 is arranged on the outer wall of the shell 80 and is in contact with the outside to detect the wind speed, and the detection mode is simple and reliable.
The following describes a mode of use of the wind turbine generator of the present embodiment:
when the wind speed of the external environment is within a first preset wind speed range and/or the rotating speed of the main shaft 13 is within a first preset rotating speed range, the first clutch 20 is in a combined state, and the second energy storage part is in an energy storage state; when the wind speed of the external environment is within a second preset wind speed range and/or the rotating speed of the main shaft 13 is within a second preset rotating speed range, the first clutch 20 is in a combined state, and the first energy storage part is in an energy storage state;
when the wind speed of the external environment is within a first preset wind speed range and/or the rotating speed of the main shaft 13 is within a first preset rotating speed range, the controller 72 controls the first clutch 20 and the third clutch 60 to be in a combined state, the second locking structure 52 is in an unlocked state, the blades 12 drive the first transmission shaft 11 to rotate through the main shaft 13 to generate power, and meanwhile, the first transmission shaft 11 drives the second energy storage part to store energy;
when the wind speed of the external environment is within a second preset wind speed range and/or the rotating speed of the main shaft 13 is within a second preset rotating speed range, the controller 72 controls the first clutch 20 and the second clutch 40 to be in a combined state, the first locking structure 32 is in an unlocked state, the blade 12 drives the first transmission shaft 11 to rotate through the main shaft 13 to generate power, and meanwhile, the first transmission shaft 11 drives the first energy storage part to store energy;
when the wind speed is smaller than the minimum value of the first preset wind speed range and/or the rotating speed is smaller than the minimum value of the first preset rotating speed range, the controller 72 controls the first clutch 20 and the second clutch 40 to be in a disconnection state, the controller 72 controls the third clutch 60 to be in a connection state, meanwhile, the first locking structure 32 is in a locking state, the second locking structure 52 is in an unlocking state, the second energy storage part drives the first transmission shaft 11 to rotate and generate electricity, if the energy of the second energy storage part is used up, the third clutch 60 is in the disconnection state, the second clutch 40 is in the connection state, the second locking structure 52 is in the unlocking state, the first energy storage part continues to drive the shaft to rotate and generate electricity, the first transmission shaft 11 is driven to rotate by the second energy storage part with smaller elastic energy release first, and then is driven to rotate by the first energy storage part with larger elastic energy release, so that the rotation is slow to fast, and the speed change is smooth;
when the wind speed is greater than the maximum value of the second preset wind speed range and/or the rotating speed is greater than the maximum value of the second preset rotating speed range, the controller 72 controls the first clutch 20 and the third clutch 60 to be in a disconnected state, the controller 72 controls the second clutch 40 to be in a combined state, meanwhile, the second locking structure 52 is in a locked state, the first locking structure 32 is in an unlocked state, the first energy storage portion drives the first transmission shaft 11 to rotate and generate electricity, if the energy of the first energy storage portion is used up, the second clutch 40 is in the disconnected state, the third clutch 60 is in the combined state, the first locking structure 32 is changed into the unlocked state, the second energy storage portion continues to drive the first transmission shaft 11 to rotate and generate electricity, the first transmission shaft 11 is driven to rotate by the first energy storage portion with larger elastic energy release, and then is driven to rotate by the second energy storage portion with smaller elastic energy release, so that the rotation is changed from fast to slow, and the speed change is smooth.
The invention also provides a wind power generation energy storage control method, which comprises the following steps: acquiring the wind speed of the external environment and/or the rotating speed of the main shaft 13; the state of the first clutch 20, the state of the first energy storage and the second energy storage are controlled depending on the wind speed and/or the rotational speed. When the power generation is normal, the main shaft 13 drives the first transmission shaft 11 to rotate, and the first energy storage part and the second energy storage part are in transmission fit with the first transmission shaft 11 at different wind speeds and/or rotating speeds of the main shaft 13 and store energy, so that energy storage under different scenes is realized; when the outside is free of wind or the wind power is small, the first clutch 20 is in a disconnected state, the main shaft 13 is disconnected from the first transmission shaft 11, at least one of the first energy storage part and the second energy storage part can drive the first transmission shaft 11 to rotate, the generator 10 can still generate electricity and run under the condition of no wind, the non-stop running can be continuously realized in the electricity generation process, and the wind driven generator can run more stably and has no loss.
In at least one embodiment, the step of controlling the state of the first clutch 20, the state of the first energy storage portion and the state of the second energy storage portion according to the wind speed or the rotational speed includes: judging whether the wind speed is within a first preset wind speed range and/or whether the rotating speed is within a first preset rotating speed range; when the wind speed is within a first preset wind speed range and/or the rotating speed is within a first preset rotating speed range, the first clutch 20 is controlled to be combined, and the second energy storage part stores energy; when the wind speed is out of a first preset wind speed range and/or the rotating speed is out of a first preset rotating speed range, judging whether the wind speed is in a second preset wind speed range and/or the rotating speed is in a second preset rotating speed range; when the wind speed is within a second preset wind speed range and/or the rotating speed is within a second preset rotating speed range, the first clutch 20 is in a combined state, and the first energy storage part is in an energy storage state; when the wind speed is out of the first preset wind speed range and the second preset wind speed range and/or the rotating speed is out of the first preset rotating speed range and the second preset rotating speed range, the first clutch 20 is controlled to be disconnected, the first energy storage part and/or the second energy storage part release energy, the first energy storage part and the second energy storage part can release energy independently and can release energy simultaneously, energy release modes are more various, the rotating speed fluctuation of the first transmission shaft 11 is smaller through different potential energy sequences of the first energy storage part and the second energy storage part, and the impact received when the first clutch 20 is combined is also smaller.
In at least one embodiment, when the wind speed is out of the first preset wind speed range and the second preset wind speed range and/or the rotating speed is out of the first preset rotating speed range and the second preset rotating speed range, the step of controlling the first clutch 20 to be in the disconnected state, and the step of controlling the first energy storage part and/or the second energy storage part to be in the energy release state includes: when the wind speed is smaller than the minimum value of the first preset wind speed range or the rotating speed is smaller than the minimum value of the first preset rotating speed range, the energy releasing priority of the second energy storing part is higher than that of the first energy storing part; when the wind speed is greater than the maximum value of the second preset wind speed range or the rotating speed is greater than the maximum value of the second preset rotating speed range, the energy releasing priority of the first energy storing part is higher than that of the second energy storing part, and the energy releasing priority of the energy storing part is changed according to different preset wind speed ranges and/or different preset rotating speed ranges, so that the energy releasing process is more reasonable.
In at least one embodiment, after the step of controlling the engagement of the first clutch 20, the wind power generation and energy storage control method further includes: judging whether the energy stored in the first energy storage part reaches the maximum stored energy; when the energy stored in the first energy storage part reaches the maximum energy storage part, the second clutch 40 is controlled to be disconnected; judging whether the energy stored in the second energy storage part reaches the maximum stored energy; when the energy stored in the second energy storage portion reaches its maximum stored energy, the third clutch 60 is controlled to be disengaged.
Specifically, when the energy stored in the first energy storage portion reaches its maximum stored energy, the second clutch 40 is controlled to be disengaged while the first lock structure 32 is placed in the locked state, and when the energy stored in the second energy storage portion reaches its maximum stored energy, the third clutch 60 is controlled to be disengaged while the second lock structure 52 is placed in the locked state. It will be appreciated that, as an alternative embodiment, it is not necessary to determine whether the energy stored in the first energy storage portion and the second energy storage portion reaches the maximum stored energy, and the first energy storage portion and the second energy storage portion continue to rotate along with the first transmission shaft 11 when they store the full energy.
In at least one embodiment, after the step of controlling the first clutch 20 to be disconnected, the wind power generation energy storage control method further includes: judging whether the energy released by the second energy storage part reaches the maximum stored energy; when the energy released by the second energy storage part reaches the maximum energy storage part, the third clutch 60 is controlled to be disconnected, and the second clutch 40 is controlled to be combined; judging whether the energy released by the first energy storage part reaches the maximum stored energy; when the energy released by the first energy storage reaches its maximum stored energy, the second clutch 40 is controlled to be disengaged.
Specifically, when the energy released from the second energy storage portion reaches its maximum stored energy, the third clutch 60 is controlled to be disengaged, the second clutch 40 is controlled to be engaged, and the first locking structure 32 is controlled to be in the unlocked state, and when the energy released from the first energy storage portion reaches its maximum stored energy, the second clutch 40 is controlled to be disengaged, and the second locking structure 52 is controlled to be in the unlocked state.
In at least one embodiment, after the step of controlling the first clutch 20 to be disconnected, the wind power generation and energy storage control method further includes: judging whether the energy released by the first energy storage part reaches the maximum stored energy; when the energy released by the first energy storage part reaches the maximum energy storage part, the second clutch 40 is controlled to be disconnected, and the third clutch 60 is controlled to be combined; judging whether the energy released by the second energy storage part reaches the maximum stored energy; when the energy stored in the second energy storage part reaches its maximum stored energy, the third clutch 60 is controlled to be disengaged.
Specifically, when the energy released by the first energy storage portion reaches its maximum stored energy, the second clutch 40 is controlled to be disengaged, the third clutch 60 is controlled to be engaged while the second locking structure 52 is in the unlocked state, and when the energy stored by the second energy storage portion reaches its maximum stored energy, the third clutch 60 is controlled to be disengaged while the first locking structure 32 is in the unlocked state.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
1. in at least one embodiment, a first clutch 20 is arranged between the first transmission shaft 11 and the main shaft 13, the main shaft 13 drives the first transmission shaft 11 to rotate during normal power generation, and the first energy storage part and the second energy storage part are in transmission fit with the first transmission shaft 11 at different wind speeds and/or rotating speeds of the main shaft 13 and store energy, so that energy storage under different scenes is realized; when the external wind power is smaller or the wind power is too large, the first clutch 20 is in a disconnected state, the main shaft 13 is disconnected with the first transmission shaft 11, the potential energy sequence can be adjusted by the first energy storage part and the second energy storage part according to the change of the external wind speed, the first transmission shaft 11 is driven to rotate, the energy utilization rate is higher, the first transmission shaft 11 can continuously rotate, the generator 10 can still generate electricity under the condition of no wind, the electricity generation process can continuously realize non-stop operation, the wind driven generator can operate more stably and without loss, and the influence of wind power generation equipment on the operation of a power grid when no wind exists or the wind power is smaller is effectively reduced.
2. In at least one embodiment, the wind power generator further includes a wind speed sensor 71 and a speed sensor 73, and the controller 72 automatically controls the states of the clutches according to a wind speed signal measured by the wind speed sensor 71 and/or a rotation speed signal measured by the speed sensor 73, so that the wind power generator can maintain a normal working state, the wind power generator can continuously generate power in a no-wind state, and meanwhile, the wind power generator can be prevented from being damaged due to too high rotation speed, and the control process is more intelligent.
3. In at least one embodiment, the transmission ratio between the first transmission shaft 11 and the third transmission shaft 15 is greater than 1, when the rotation speed of the first transmission shaft 11 is low, the torque can be increased, so that the second energy storage portion can still store energy, and simultaneously, the second energy storage portion can also keep the first transmission shaft 11 at a certain rotation speed when outputting energy, the elastic energy stored in the first energy storage portion is released more elastically, and mainly stores energy when the rotation speed of the first transmission shaft 11 is high, the transmission ratio between the first transmission shaft 11 and the third transmission shaft 15 is less than or equal to 1, when the rotation speed of the first transmission shaft 11 is high, the energy can be stored rapidly, and when the first clutch 20 is disconnected when the external wind speed exceeds a predetermined wind speed, the first transmission shaft 11 can still be driven to rotate at a higher speed, so that the power generation efficiency of the generator 10 is prevented from being reduced suddenly to affect the operation of the power grid.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A wind power generation energy storage system, comprising:
the first transmission shaft (11) is suitable for driving a generator (10) of the wind driven generator to generate electricity;
the main shaft (13) is suitable for being driven by blades (12) of a wind driven generator to rotate and transmit power, the main shaft (13) is connected with the first transmission shaft (11) through a first clutch (20), the first clutch (20) has a connection state and a disconnection state, when the first clutch (20) is in the connection state, the main shaft (13) and the first transmission shaft (11) are in a power transmission state, and when the first clutch (20) is in the disconnection state, the main shaft (13) and the first transmission shaft (11) are in a power non-transmission state;
the first energy storage part is in transmission fit with the first transmission shaft (11) and has an energy storage state and an energy release state;
the second energy storage part is in transmission fit with the first transmission shaft (11) and has an energy storage state and an energy release state;
the maximum stored energy of the first energy storage part is greater than that of the second energy storage part;
when the wind speed of the external environment is within a first preset wind speed range and/or the rotating speed of the main shaft (13) is within a first preset rotating speed range, the first clutch (20) is in a combined state, and the second energy storage part is in an energy storage state;
when the wind speed of the external environment is within a second preset wind speed range and/or the rotating speed of the main shaft (13) is within a second preset rotating speed range, the first clutch (20) is in a combined state, and the first energy storage part is in an energy storage state;
the maximum value of the first preset wind speed range is less than or equal to the minimum value of the second preset wind speed range, and the maximum value of the first preset rotating speed range is less than or equal to the minimum value of the second preset rotating speed range;
when the external wind speed is out of the first preset wind speed range and the second preset wind speed range and/or the rotating speed of the main shaft (13) is out of the first preset rotating speed range and the second preset rotating speed range, the first clutch (20) is in a disconnected state, and the first energy storage part and/or the second energy storage part are in an energy release state.
2. The wind power generation and energy storage system of claim 1, further comprising:
a controller (72) electrically connected to the first clutch (20), the controller (72) controlling the first clutch (20) to switch between its engaged and disengaged states.
3. Wind power storage system according to claim 2,
the wind power generation energy storage system further comprises a wind speed sensor (71), the wind speed sensor (71) is suitable for detecting the wind speed of the external environment, the controller (72) is electrically connected with the wind speed sensor (71), and the controller (72) controls the first clutch (20) to be switched between the connection state and the disconnection state according to the wind speed detected by the wind speed sensor (71);
and/or, the wind power generation energy storage system further comprises a speed sensor (73), the speed sensor (73) is suitable for detecting the rotating speed of the main shaft (13), the controller (72) is electrically connected with the speed sensor (73), and the controller (72) controls the first clutch (20) to be switched between the connection state and the disconnection state of the first clutch according to the rotating speed detected by the speed sensor (73).
4. Wind power storage system according to any one of claims 1 to 3,
when the wind speed is smaller than the minimum value of the first preset wind speed range and/or the rotating speed is smaller than the minimum value of the first preset rotating speed range, the energy releasing priority of the second energy storage part is higher than the energy releasing priority of the first energy storage part;
when the wind speed is larger than the maximum value of the second preset wind speed range and/or the rotating speed is larger than the maximum value of the second preset rotating speed range, the energy releasing priority of the first energy storing part is higher than the energy releasing priority of the second energy storing part.
5. A wind power generation and energy storage system according to any one of claims 1 to 3, further comprising:
the second transmission shaft (14) is connected with the first transmission shaft (11) through a first transmission mechanism, and the transmission ratio of the first transmission shaft (11) to the second transmission shaft (14) is less than or equal to 1;
the second clutch (40) is respectively connected with the first energy storage part and the second transmission shaft (14), the second clutch (40) has a combination state and a disconnection state, when the second clutch (40) is in the combination state, the first transmission shaft (11) and the first energy storage part are in a power transmission state, and when the second clutch (40) is in the disconnection state, the first transmission shaft (11) and the first energy storage part are in a power transmission failure state.
6. The wind power generation and energy storage system of claim 5, further comprising:
the third transmission shaft (15) is connected with the first transmission shaft (11) through a second transmission mechanism, and the transmission ratio of the first transmission shaft (11) to the third transmission shaft (15) is greater than 1;
and a third clutch (60) connected between the third transmission shaft (15) and the second energy storage part, wherein the third clutch (60) has a connection state and a disconnection state, when the third clutch (60) is in the connection state, the first transmission shaft (11) and the second energy storage part are in a power transmission state, and when the third clutch (60) is in the disconnection state, the first transmission shaft (11) and the second energy storage part are in a power transmission failure state.
7. A wind power generator, comprising: the wind power generation energy storage system comprises a generator (10), blades (12) and the wind power generation energy storage system as claimed in any one of claims 1 to 6, wherein the generator (10) is driven by a first transmission shaft (11) of the wind power generation energy storage system to generate power, and the blades (12) drive a main shaft (13) of the wind power generation energy storage system to rotate.
8. A wind power generation energy storage control method is characterized by comprising the following steps:
acquiring the wind speed of the external environment and/or the rotating speed of a main shaft (13);
the state of the first clutch (20) and the states of the first and second energy storage sections are controlled as a function of the wind speed and/or the rotational speed.
9. The wind power generation energy storage control method according to claim 8,
the step of controlling the state of the first clutch (20) and the states of the first and second energy storage portions according to the wind speed or the rotational speed includes:
judging whether the wind speed is within a first preset wind speed range and/or whether the rotating speed is within a first preset rotating speed range;
when the wind speed is within the first preset wind speed range and/or the rotating speed is within the first preset rotating speed range, the first clutch (20) is controlled to be combined, and the second energy storage part stores energy;
when the wind speed is out of the first preset wind speed range and/or the rotating speed is out of the first preset rotating speed range, judging whether the wind speed is in a second preset wind speed range and/or whether the rotating speed is in a second preset rotating speed range;
when the wind speed is within a second preset wind speed range and/or the rotating speed is within a second preset rotating speed range, the first clutch (20) is in a combined state, and the first energy storage part is in an energy storage state;
when the wind speed is out of the first preset wind speed range and the second preset wind speed range and/or the rotating speed is out of the first preset rotating speed range and the second preset rotating speed range, the first clutch (20) is controlled to be disconnected, and the first energy storage part and/or the second energy storage part release energy.
10. The wind power generation energy storage control method according to claim 9,
when the wind speed is out of the first preset wind speed range and the second preset wind speed range and/or the rotating speed is out of the first preset rotating speed range and the second preset rotating speed range, the first clutch (20) is controlled to be in a disconnected state, and the first energy storage part and/or the second energy storage part are/is in an energy release state, and the step of:
when the wind speed is smaller than the minimum value of the first preset wind speed range or the rotating speed is smaller than the minimum value of the first preset rotating speed range, the energy releasing priority of the second energy storing part is higher than the energy releasing priority of the first energy storing part;
when the wind speed is larger than the maximum value of the second preset wind speed range or the rotating speed is larger than the maximum value of the second preset rotating speed range, the energy releasing priority of the first energy storing part is higher than the energy releasing priority of the second energy storing part.
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| CN202211518933.0A CN115711201A (en) | 2022-11-30 | 2022-11-30 | Wind power generation energy storage system, wind power generator and wind power generation energy storage control method |
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| CN202211518933.0A CN115711201A (en) | 2022-11-30 | 2022-11-30 | Wind power generation energy storage system, wind power generator and wind power generation energy storage control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116183840A (en) * | 2023-05-04 | 2023-05-30 | 四川交通职业技术学院 | Environment monitoring system for intelligent environmental protection engineering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116183840A (en) * | 2023-05-04 | 2023-05-30 | 四川交通职业技术学院 | Environment monitoring system for intelligent environmental protection engineering |
| CN116183840B (en) * | 2023-05-04 | 2023-06-30 | 四川交通职业技术学院 | Environment monitoring system for intelligent environmental protection engineering |
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