CN114738194A - Up-down wind direction coaxial wind generating set and control method thereof - Google Patents

Up-down wind direction coaxial wind generating set and control method thereof Download PDF

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Publication number
CN114738194A
CN114738194A CN202210315838.4A CN202210315838A CN114738194A CN 114738194 A CN114738194 A CN 114738194A CN 202210315838 A CN202210315838 A CN 202210315838A CN 114738194 A CN114738194 A CN 114738194A
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China
Prior art keywords
impeller
wind
upwind
downwind
impellers
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Pending
Application number
CN202210315838.4A
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Chinese (zh)
Inventor
李建军
高会
陈艳
王磊
白斌
李天宇
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MingYang Smart Energy Group Co Ltd
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MingYang Smart Energy Group Co Ltd
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Priority to CN202210315838.4A priority Critical patent/CN114738194A/en
Publication of CN114738194A publication Critical patent/CN114738194A/en
Pending legal-status Critical Current

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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
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • F03D15/00—Transmission of mechanical power
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0296—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70—Bearing or lubricating arrangements
    • 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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  • Engineering & Computer Science (AREA)
  • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses an up-down wind direction coaxial wind generating set and a control method thereof, wherein the up-down wind direction coaxial wind generating set comprises an up-wind direction impeller, a cabin, a down-wind direction impeller, a yaw bearing and a tower frame, the up-wind direction impeller is arranged on the input end surface of an up-wind direction side transmission chain of the cabin, the down-wind direction impeller is arranged on the input end surface of a down-wind direction side transmission chain of the cabin, and the cabin is arranged on the top of the tower frame through the yaw bearing; the upwind impeller and the downwind impeller are coaxially arranged, the diameter of the upwind impeller is different from that of the downwind impeller, the running speed of the upwind impeller is not synchronous with that of the downwind impeller, the upwind impeller drives one generator to generate electricity through the speed increase of the gear box, the downwind impeller also drives one generator to generate electricity through the speed increase of the gear box, and the two generators generate electricity simultaneously and output the electricity to a transformer substation through the two converters. The invention can meet the requirements of using a transmission chain with relatively small size and relatively few materials and a single hydraulic lubrication system under higher power, and realizes the purposes of high generating power and low material cost.

Description

Up-down wind direction coaxial wind generating set and control method thereof
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind generating set with coaxial upper and lower wind directions and a control method thereof.
Background
At present, the mainstream wind generating set at home and abroad is mainly characterized by the wind direction, three blades, a direct-drive permanent magnet generator, a double-fed generator or a semi-direct-drive permanent magnet generator. When the wind direction changes, the main control system of the unit sends out a yaw instruction of the unit according to the set conditions and the wind measurement data to enable the main machine to rotate, the impeller is executed to face the incoming wind, and the upward wind direction of the impeller facing the incoming wind is generally taken as the yaw direction.
Because the weight of the impeller part right in front of the unit is large, a tower for supporting the main machine is subjected to large bending moment when the unit runs and is static, and the bending moment is directly related to the power of the main machine and the diameter of the impeller. The larger the power is, the larger the diameter of the impeller is, the stronger the strength and the weight of the tower are, the larger the foundation is, and the higher the cost is.
In order to overcome the technical limitation caused by the structure of the wind generating set with three blades, the wind generating set which can increase the power without obviously increasing the cost needs to be designed, and the purposes of high generating power and low material cost are achieved.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, mainly aims at solving the problems that the tower bears bending moment and the transmission chain is limited by the manufacturing capability and cannot meet the strength requirement when the tower bears bending moment along with the increase of power of the traditional single-impeller wind generating set, provides a safe and reliable up-down wind direction coaxial wind generating set and a control method thereof, can meet the requirements that only a transmission chain with relatively small size and relatively few materials and a single hydraulic lubricating system are used under higher power, and achieves the purposes of high generating power and low material cost.
In order to realize the purpose, the technical scheme provided by the invention is as follows: a wind generating set with coaxial up and down wind directions comprises an up wind direction impeller, a cabin, a down wind direction impeller, a yaw bearing and a tower, wherein the up wind direction impeller is installed on the input end face of an up wind direction side transmission chain of the cabin, the down wind direction impeller is installed on the input end face of a down wind direction side transmission chain of the cabin, and the cabin is installed on the top of the tower through the yaw bearing; the upwind impeller and the downwind impeller are coaxially arranged, the diameter of the upwind impeller is different from that of the downwind impeller, the running speed of the upwind impeller is different from that of the downwind impeller, so that the influence of wind flowing through the upwind impeller on the downwind impeller is reduced, the resonance generated when the upwind impeller and the downwind impeller rotate is destroyed, the upwind impeller drives one generator to generate power through a gear box in an upwind side transmission chain of a cabin, the downwind impeller also drives one generator to generate power through the gear box in an acceleration mode, and the two generators generate power simultaneously and output the power to a transformer substation through two converters.
Furthermore, the engine room is of a T-shaped structure, and the upwind impeller and the downwind impeller are respectively arranged at two ends of a transverse cabin body of the engine room.
The wind power generation system further comprises a control system, wherein the control system is used for controlling blade pitch angles of the two impellers respectively, adjusting the blade pitch angles of the two impellers according to wind speed changes and vibration conditions of the engine room and the tower so as to capture maximum wind energy and inhibit vibration at the same time, and the control system also controls the unit to execute yaw wind alignment according to wind direction changes.
And the two impellers share one hydraulic lubricating system, and lubrication, impeller locking and hydraulic braking of the two gear boxes are respectively controlled by an electromagnetic control valve and a valve block.
Further, the upwind impeller and the downwind impeller are three-blade impellers or two-blade impellers.
The invention also provides a control method of the coaxial wind generating set in the up-down wind direction, which comprises the following specific conditions:
when the wind speed reaches the starting torque of the up-wind and down-wind impellers, the two impellers are accelerated through the gear boxes connected with the two impellers to drive the corresponding generators to generate electricity, when the vibration of the up-wind impellers exceeds the limit in the operation process, the control system controls the blades of the down-wind impellers to change the pitch so as to inhibit the vibration of the up-wind impellers, and if the vibration still exists, the blades of the up-wind impellers need to be adjusted to change the pitch so as to inhibit the vibration;
when the wind direction changes, the control system can control the action of the yaw system of the main machine to execute yaw wind alignment according to the wind direction;
when the system detects that the wind speed is larger than the cut-off wind speed, the control system executes a unit cut-off program, and the up-wind impeller and the down-wind impeller both execute feathering actions.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the engine room with the T-shaped structure is designed, the defect that the bending moment of the engine room is synchronously increased along with the increase of power of the traditional single-impeller wind generating set is overcome, and the stress of the tower is better.
2. The impellers with different diameters in the up and down wind directions are adopted, the vibration value of the whole machine can be reduced by controlling the blades of the impellers in the up and down wind directions to change the pitch, and further vortex-induced vibration which possibly occurs in the tower frame is controlled.
3. Because wind energy is utilized twice by the two impellers, the wind speed reduction range is larger, the pressure difference of the front high-pressure area and the rear low-pressure area of the unit is larger, and the theoretical wind energy utilization rate is higher in the unit area of the unit.
4. If the two-blade impeller with the upper wind direction and the lower wind direction is adopted, the defect of poor dynamic balance of the single impeller with the two blades can be overcome.
5. The method provides reference for the technical research and development of the up-wind and down-wind coaxial wind generating set.
Drawings
FIG. 1 is a schematic side view of a coaxial wind generating set in the up-down wind direction.
Fig. 2 is a front view of the coaxial wind generating set (three-blade impeller) in the up-down wind direction.
Fig. 3 is a front view (two-blade impeller) of the coaxial wind turbine generator system in the vertical wind direction.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Example 1
Referring to fig. 1 and 2, the present embodiment provides an up-down wind direction coaxial wind generating set, which includes an up-wind direction impeller 1, a nacelle 2, a down-wind direction impeller 3, a yaw bearing 4, a tower 5, a control system (not shown in the figure) and a set of hydraulic lubrication system (not shown in the figure).
The nacelle 2 is arranged at the top of the tower 5 through a yaw bearing, the nacelle 2 is of a T-shaped structure, the two ends of the transverse nacelle body are respectively the input end face of an upwind side transmission chain and the input end face of a downwind side transmission chain, the nacelle of the T-shaped structure can avoid the defect that the bending moment of the nacelle of a traditional single-impeller wind generating set is synchronously increased along with the increase of power, and the tower 5 is better stressed.
The upwind impeller 1 is installed on the input end face of the upwind side transmission chain of the engine room 2, and the downwind impeller is installed on the input end face of the downwind side transmission chain of the engine room 2. Upwind impeller 1 and downwind impeller 3 are the three-bladed impeller of coaxial arrangement, upwind impeller 1 diameter is different with downwind impeller 3 diameter, upwind impeller 1 running speed is asynchronous with downwind impeller 3 running speed, can reduce the wind that flows through upwind impeller 1 to downwind impeller 3's influence, destroy the resonance that upwind impeller 1 and downwind impeller 3 produced when rotating, simultaneously because wind energy passes through twice utilization of two impellers, the wind speed reduction range is bigger, high low pressure area pressure differential is bigger around the unit, in the unit region of unit, theoretical wind energy utilization is higher.
In the upwind side transmission chain of the engine room 2, the upwind impeller 1 drives one generator to generate electricity through the speed increasing of the gear box, and in the downwind side transmission chain of the engine room 2, the downwind impeller 3 also drives one generator to generate electricity through the speed increasing of the gear box, and the two generators generate electricity simultaneously and output the electricity to the transformer substation through the two converters.
And one control system respectively controls the blade pitch angle of the two impellers and adjusts the blade pitch angle of the two impellers according to the wind speed change and the vibration conditions of the engine room and the tower so as to capture the maximum wind energy and inhibit the vibration at the same time, and the control system also controls the unit to execute yawing wind alignment according to the wind direction change.
The two impellers share one set of hydraulic lubricating system, and lubrication, impeller locking and hydraulic braking of the two gear boxes are respectively controlled through an electromagnetic control valve and a valve block.
When the wind speed reaches the starting torque of the upwind impeller 1 and the downwind impeller 3, the two impellers are accelerated through the gear boxes connected with the two impellers to drive the corresponding generators to generate electricity, when the upwind impeller 1 vibrates in the running process beyond the limit, the control system controls the blades of the downwind impeller 3 to change the pitch so as to inhibit the upwind impeller 1 from vibrating, and if the vibration still exists, the blades of the upwind impeller 1 need to be adjusted to change the pitch so as to inhibit the vibration;
when the wind direction changes, the control system can control the action of the yaw system of the main machine to execute yaw wind alignment according to the wind direction;
when the system detects that the wind speed is larger than the cut-off wind speed, the control system executes a unit cut-off program, and the up-wind and down- wind impellers 1 and 3 both execute feathering actions.
Example 2
Referring to fig. 3, unlike embodiment 1, the upwind impeller 1 and the downwind impeller 3 of the present embodiment are two-bladed impellers arranged coaxially.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (6)

1. The utility model provides a coaxial wind generating set of upwind direction which characterized in that: the wind power generation device comprises an upwind impeller, a cabin, a downwind impeller, a yaw bearing and a tower, wherein the upwind impeller is arranged on the input end surface of an upwind side transmission chain of the cabin, the downwind impeller is arranged on the input end surface of a downwind side transmission chain of the cabin, and the cabin is arranged on the top of the tower through the yaw bearing; the upwind impeller and the downwind impeller are coaxially arranged, the diameter of the upwind impeller is different from that of the downwind impeller, the running speed of the upwind impeller is different from that of the downwind impeller, so that the influence of wind flowing through the upwind impeller on the downwind impeller is reduced, the resonance generated when the upwind impeller and the downwind impeller rotate is destroyed, the upwind impeller drives one generator to generate power through a gear box in an upwind side transmission chain of a cabin, the downwind impeller also drives one generator to generate power through the gear box in an acceleration mode, and the two generators generate power simultaneously and output the power to a transformer substation through two converters.
2. The upper and lower wind direction coaxial wind generating set of claim 1, wherein: the engine room is of a T-shaped structure, and the upwind impeller and the downwind impeller are respectively arranged at two ends of a transverse cabin body of the engine room.
3. The upper and lower wind direction coaxial wind generating set of claim 1, wherein: the wind power generation system comprises a wind power generation unit, a wind speed variation control system and a control system, wherein the wind power generation unit is used for generating wind power, the control system is used for controlling blade pitch angles of two impellers respectively, adjusting the blade pitch angles of the two impellers according to wind speed variation and vibration conditions of a machine room and a tower so as to capture maximum wind energy and inhibit vibration at the same time, and the control system is also used for controlling the wind power generation unit to execute yaw wind alignment according to wind direction variation.
4. The upper and lower wind direction coaxial wind generating set of claim 1, wherein: the hydraulic lubrication system is shared by the two impellers, and lubrication, impeller locking and hydraulic braking of the two gear boxes are respectively controlled through the electromagnetic control valve and the valve block.
5. The upper and lower wind direction coaxial wind generating set of claim 1, wherein: the upwind impeller and the downwind impeller are three-blade impellers or two-blade impellers.
6. The control method of the up-down wind direction coaxial wind generating set according to any one of claims 1 to 5, characterized in that: when the wind speed reaches the starting torque of the up-wind and down-wind impellers, the two impellers are accelerated through the gear boxes connected with the two impellers to drive the corresponding generators to generate electricity, when the vibration of the up-wind impellers exceeds the limit in the operation process, the control system controls the blades of the down-wind impellers to change the pitch so as to inhibit the vibration of the up-wind impellers, and if the vibration still exists, the blades of the up-wind impellers need to be adjusted to change the pitch so as to inhibit the vibration;
when the wind direction changes, the control system can control the action of the yaw system of the main machine to execute yaw wind alignment according to the wind direction;
when the system detects that the wind speed is larger than the cut-off wind speed, the control system executes a unit cut-off program, and the up-wind impeller and the down-wind impeller both execute feathering actions.
CN202210315838.4A 2022-03-29 2022-03-29 Up-down wind direction coaxial wind generating set and control method thereof Pending CN114738194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210315838.4A CN114738194A (en) 2022-03-29 2022-03-29 Up-down wind direction coaxial wind generating set and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210315838.4A CN114738194A (en) 2022-03-29 2022-03-29 Up-down wind direction coaxial wind generating set and control method thereof

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Publication Number Publication Date
CN114738194A true CN114738194A (en) 2022-07-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115585091A (en) * 2022-09-08 2023-01-10 若光若盐(南京)科技有限公司 Horizontal shaft up-down wind direction double-wind wheel direct-drive wind generating set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115585091A (en) * 2022-09-08 2023-01-10 若光若盐(南京)科技有限公司 Horizontal shaft up-down wind direction double-wind wheel direct-drive wind generating set
CN115585091B (en) * 2022-09-08 2024-01-26 若光若盐(南京)科技有限公司 Double wind wheel direct-drive wind generating set with horizontal shaft up-down wind direction

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