CN116201697A - Transmission chain and topological structure of wind generating set - Google Patents
Transmission chain and topological structure of wind generating set Download PDFInfo
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- CN116201697A CN116201697A CN202310159915.6A CN202310159915A CN116201697A CN 116201697 A CN116201697 A CN 116201697A CN 202310159915 A CN202310159915 A CN 202310159915A CN 116201697 A CN116201697 A CN 116201697A
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- gear
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- speed regulating
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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
- F03D15/00—Transmission of mechanical power
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
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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
Abstract
The invention discloses a wind generating set transmission chain and a topological structure, and relates to the field of wind power technology, wherein the wind generating set transmission chain comprises a differential gear speed regulating box, a speed regulating driver and a synchronous generator, the speed regulating driver and the synchronous generator are both connected with the differential gear speed regulating box, the differential gear speed regulating box comprises an annular gear, a planet carrier, a planet wheel, a sun wheel and a speed regulating gear, the planet wheel, the sun wheel and the speed regulating gear are all positioned in the annular gear, and the speed regulating gear is meshed with the annular gear; the topological structure comprises a wind generating set transmission chain and a power grid, and the synchronous generator is electrically connected with the power grid. The invention has the advantages of low comprehensive cost, friendly power grid and high reliability.
Description
Technical Field
The invention relates to the field of wind power technology, in particular to a transmission chain and a topological structure of a wind generating set.
Background
In recent years, the gradually developed power grid friendly wind power technology takes a front stepless speed regulation technology as a core, and adopts a constant-speed synchronous generator to keep the rotating speed of the generator near the synchronous rotating speed all the time, so that the electric energy generated by the generator is directly connected with the power grid when a converter is not arranged between the generator and the power grid.
The prepositive stepless speed regulating technology mainly comprises three technologies of hydraulic torque variable speed regulation, electromagnetic coupling speed regulation and differential gear speed regulation. The German Voith company develops a WinDrive system based on speed regulation of a hydraulic torque converter, and the WinDrive system has high cost and low transmission efficiency and cannot be popularized in a large scale. By utilizing the speed regulation mode of the electromagnetic coupler, the efficiency is not high because the slip power loss and the iron loss cannot be eliminated, and no prototype exists at present.
The mode of using differential gear speed regulation is most efficient, and the related technology provides a wind generating set transmission chain which comprises a differential speed regulation gear box and a speed regulation motor. The differential speed regulating gear box comprises a gear ring, a planetary gear train arranged in the gear ring and a speed regulating gear arranged outside the gear ring, wherein the speed regulating gear is meshed with the outer teeth of the gear ring, and the planetary gear train is meshed with the inner teeth of the gear ring. The motor is connected with the speed regulating gear to regulate the rotation of the wind wheel of the input differential gear box.
In the above scheme, the gear ring is required to be provided with gear teeth on both the inner ring and the outer ring, so that the gear ring has a complex structure and is difficult to manufacture, and there is room for improvement.
Disclosure of Invention
The invention aims to overcome the defects of complex gear ring structure and difficult manufacture when differential gear speed regulation is adopted in the prior art, and provides a transmission chain and a topological structure of a wind generating set, which have the advantages of low comprehensive cost, friendly power grid and high reliability.
The invention solves the technical problems by the following technical scheme:
in a first aspect, the invention provides a drive train of a wind turbine generator system, comprising a differential gear speed box, a speed regulation driver and a synchronous generator, both of which are connected with the differential gear speed box,
the differential gear speed regulating box comprises an annular gear, a planet carrier, a planet wheel, a sun wheel and a speed regulating gear, the speed regulating driver is connected with the speed regulating gear, the synchronous generator is connected with the sun wheel, and an input shaft of the planet carrier is used for receiving power from the wind wheel;
the planet wheel, the sun wheel and the speed regulating gear are all positioned in the annular gear, the sun wheel and the annular gear are coaxially arranged, the planet wheel is arranged on the planet carrier, the planet wheel is meshed with the annular gear and the sun wheel at the same time, and the speed regulating gear is meshed with the annular gear.
In the scheme, the rotating speed from the wind wheel is input to the planet carrier of the differential gear speed regulating box, the planet carrier drives the planet wheel to revolve, the speed regulating driver drives the inner gear ring to rotate through the speed regulating gear, the planet wheel is meshed with the inner gear ring, the planet wheel synthesizes the rotating speed from the planet carrier and the rotating speed from the inner gear ring and then drives the sun wheel to rotate, and the sun wheel outputs the synthesized rotating speed to the synchronous generator to generate electricity. When the rotation speed of the wind wheel changes, the rotation speed of the speed regulating driver is regulated to enable the synthesized rotation speed to be stable, so that the synchronous generator can stably generate power.
The speed regulating gear and the planet gears are both positioned in the gear ring and meshed with the teeth of the inner gear ring, so that the inner gear ring is only required to be provided with the teeth of the inner gear ring, tooth forming on the outer gear is not required, and the difficulty degree of gear manufacturing is reduced; compared with the mode that the speed regulating gear is meshed with the external teeth of the gear ring, the speed regulating gear is meshed with the internal teeth of the gear ring, the whole size of the differential gear speed regulating box is smaller, and the occupied space of equipment is saved.
Preferably, the speed regulation driver comprises a speed regulation motor and a motor reduction gear box, an input shaft of the motor reduction gear box is connected with a rotating shaft of the speed regulation motor, and an output shaft of the motor reduction gear box is connected with the speed regulation gear.
In the scheme, the output rotating speed of the speed regulating motor is reduced by the speed regulating motor reduction gearbox and then is output to the speed regulating gear, so that the speed regulating gear obtains low rotating speed and large torque, the requirement of speed regulating of the speed regulating gear can be met when the torque of the motor is smaller, a squirrel-cage motor or a permanent magnet motor with lower power and lower cost can be adopted, and the cost of the speed regulating motor is reduced.
Preferably, the motor reduction gear box comprises a primary planetary gear train, the primary planetary gear train comprises a reduction sun gear, a reduction planet carrier, a reduction planet gear and a reduction inner gear ring, the reduction sun gear and the reduction planet gear are both positioned in the reduction inner gear ring, a rotating shaft of the speed regulating motor is connected with the reduction sun gear, and the reduction planet gear is arranged on the reduction planet carrier and meshed with the reduction sun gear and the reduction inner gear ring.
In the scheme, a structure of a motor reduction gear box is disclosed, a reduction sun gear of a primary planetary gear train is connected with a rotating shaft of a speed regulating motor, and a reduction planet gear is meshed with a reduction inner gear ring and a reduction sun gear simultaneously. The first-stage planetary gear train is used for decelerating the rotating speed input to the sun gear and outputting the decelerating rotating speed to the speed regulating gear through the planet carrier. Therefore, the torque and the rotating speed of the speed regulating motor are regulated, and after the speed is reduced through the motor reduction gearbox, the torque and the rotating speed required by the speed regulating gear of the differential gear speed regulating box are met. Meanwhile, the speed regulating driver is integrated, on one hand, the torque required by the speed regulating motor is smaller, and on the other hand, the whole manufacturability and maintainability are better.
Preferably, the speed regulating driver is provided with a plurality of speed regulating gears, the speed regulating gears are connected with the speed regulating driver in one-to-one correspondence, and the speed regulating gears are meshed with the annular gear.
In the scheme, a plurality of speed regulating drivers are arranged, and the speed regulating gears are connected with the speed regulating drivers in a one-to-one correspondence manner so as to convey the rotation of each speed regulating driver to the differential gear speed regulating box, so that the torque required by a single speed regulating motor can be further reduced, the cost of the speed regulating motor is reduced, the fault tolerance of the speed regulating drivers is improved, and when one speed regulating driver fails, the other speed regulating drivers can work.
Preferably, the wind turbine generator system drive train further comprises a coupling arranged between and coupled to the output shaft of the differential gear box and the input shaft of the synchronous generator.
In the scheme, the coupling is additionally arranged between the synchronous generator and the differential gear speed regulating box, so that the synchronous generator is independent, and the synchronous generator has good manufacturability and maintainability.
Preferably, in the axial direction of the ring gear, the width of the ring gear is larger than the sum of the width of the planet gear and the width of the speed regulating gear.
In this scheme, the width of planet wheel and the width sum of speed governing gear are less than the width of ring gear, and planet wheel and speed governing gear all can be located the ring gear completely and with the ring gear meshing to make planet wheel and speed governing gear and ring gear meshing better, joint strength is great.
In a second aspect, the invention provides a topology comprising a wind park drive train as described above, the topology further comprising a power grid, the synchronous generator being electrically connected to the power grid.
In the scheme, the speed of the synchronous generator is always kept near the synchronous speed due to the speed regulation of the speed regulation driver and the differential gear speed regulation box, a converter is not required to be arranged between the synchronous generator and the power grid, and electric energy generated by the synchronous generator is directly combined into the power grid.
Preferably, the topology structure further comprises a first transformer, the first transformer is provided with a first input end and a first output end, the synchronous generator is electrically connected with the first input end, and the power grid is electrically connected with the first output end.
In the scheme, the first transformer is connected between the synchronous generator and the power grid, and the voltage of the power generated by the synchronous generator is regulated through the first transformer, so that the power generated by the synchronous generator can be integrated into the power grid with different output voltage, and the suitability of the wind generating set is improved.
Preferably, the topology structure further comprises a low-voltage frequency converter and a second transformer, the first transformer is further provided with a second input end and a second output end, the second transformer is provided with a third input end and a third output end, the second input end is electrically connected with the power grid, the second output end is electrically connected with the third input end, the third output end is electrically connected with the low-voltage frequency converter, and the low-voltage frequency converter is electrically connected with a speed regulating motor of the speed regulating driver.
In the scheme, a power grid is connected with a speed regulating motor through a first transformer, a second transformer and a low-voltage frequency converter; the power of the power grid is transformed twice by a first transformer and a second transformer and then is converted by a low-voltage frequency converter to drive a speed regulating motor to rotate; the synchronous generator and the speed regulating motor share a first transformer. Therefore, the electricity in the power grid is subjected to primary transformation through the first transformer, the transformation range of the second transformer is reduced, the first transformer is fully utilized, and the cost is saved.
Preferably, the speed regulation driver comprises a speed regulation motor, the topological structure further comprises a low-voltage frequency converter and a second transformer, the second transformer is provided with a third input end and a third output end, the third input end is electrically connected with the power grid, the third output end is electrically connected with the low-voltage frequency converter, and the low-voltage frequency converter is electrically connected with the speed regulation motor of the speed regulation driver.
In the scheme, when the power generated by the synchronous generator is integrated into the distributed power grid, the power grid is connected with the speed regulating motor through the second transformer and the low-voltage frequency converter, the power of the power grid is transformed through the second transformer and then is converted through the low-voltage frequency converter, and then the power is transmitted to the speed regulating motor to drive the speed regulating motor to rotate.
The invention has the positive progress effects that:
according to the wind generating set transmission chain, rotation of wind wheel input is regulated through the differential gear speed regulating box and the speed regulating driver, the synchronous generator is connected with the sun wheel of the differential gear speed regulating box, the wind wheel is connected with the planet carrier of the differential gear speed regulating box, the speed regulating gear is meshed with the inner gear ring, and the speed regulating gear and the planet wheel are both positioned in the gear ring, so that the inner gear ring is only required to be provided with gear teeth in the inner ring, tooth forming in the outer ring is not required, and the manufacturing difficulty of the inner gear ring is reduced; the speed regulating gear, the speed regulating motor reduction gearbox and the speed regulating motor are integrated into a whole, so that the cost of the speed regulating motor is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a differential gear speed box according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a timing driver according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a topology of grid connection of a wind turbine generator system according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of another topology of a wind turbine generator system grid connection according to an embodiment of the present invention.
Reference numerals illustrate:
Speed increasing gear box 2
Differential gear speed regulating box 3
Planet wheel 32
Sun gear 34
Speed regulating driver 4
Motor reduction gear box 42
Speed reducing sun gear 423
Reduction planetary gear 424
Low-voltage frequency converter 7
Detailed Description
The invention is further illustrated by means of examples which follow, without thereby restricting the scope of the invention thereto.
Example 1
The present embodiment 1 discloses a wind turbine generator system transmission chain, and referring to fig. 1, the wind turbine generator system transmission chain includes a differential gear speed box 3, a speed regulation driver 4, and a synchronous generator 6. The wind wheel 1 of the wind generating set is connected with a speed increasing gear box 2, and an output shaft of the speed increasing gear box 2 is connected with an input shaft of a differential gear speed regulating box 3. The output shaft of the differential gear speed regulating box 3 is connected with the synchronous generator 6 to drive the synchronous generator 6 to generate electricity, and the speed regulating driver 4 is connected to the differential gear speed regulating box 3. The rotation of the wind wheel 1 is accelerated by the acceleration gear box 2, then is transmitted to the differential gear speed regulating box 3, is synthesized with the rotating speed of the speed regulating driver 4, and then is output to the synchronous generator 6 for power generation.
Referring to fig. 1 and 2, the differential gear speed box 3 includes a first box body 36, an annular gear 33, a carrier 31, a planet wheel 32, a sun wheel 34, and a speed gear 35. The ring gear 33, the planet carrier 31, the planet gears 32, the sun gear 34 and the speed gear 35 are all mounted in a first housing 36. The ring gear 33 is rotatably provided in the first casing 36, and the planet gears 32, the sun gear 34, and the speed gear 35 are rotatably mounted in the first casing 36.
The input shaft of the planet carrier 31 passes through the first box 36 and is connected with the output shaft of the speed increasing gear box 2, and the planet wheel 32 is rotatably arranged on the planet carrier 31. The sun gear 34 is coaxially disposed with the ring gear 33, and an output shaft of the sun gear 34 is connected with the synchronous generator 6. The planet gears 32 mesh with both the sun gear 34 and the ring gear 33.
The speed adjusting gear 35 is engaged with the ring gear 33 while the input shaft of the speed adjusting gear 35 is connected with the output shaft of the speed adjusting driver 4. The speed regulating driver 4 drives the speed regulating gear 35 to rotate so as to drive the gear ring to rotate, and the rotation of the planet carrier 31 which is input into the differential gear speed regulating box 3 with the speed increasing gear box 2 is synthesized into the constant rotation of the sun gear 34 through the planet gears 32 so as to drive the synchronous generator 6 to generate electricity. The speed regulating gear 35 and the planet gear 32 are arranged in a staggered manner, that is, the positions of the speed regulating gear 35 and the planet gear 32 meshed with the annular gear 33 are not overlapped, so that the interference of the planet gear 32 and the speed regulating gear 35 is avoided.
When the rotating speed of the wind wheel 1 changes, the rotating speed of the speed regulating driver 4 is regulated to ensure that the synthesized rotating speed is kept stable, so that the synchronous generator 6 is driven to generate electricity.
Wherein, because the speed regulating gear 35 and the planet wheel 32 are both positioned inside the annular gear 33 and the speed regulating gear 35 and the planet wheel 32 are both meshed with the annular gear 33, the annular gear 33 only needs to be provided with gear teeth on the inner ring, and the outer ring does not need to be provided with gear teeth, thereby reducing the structural complexity of the annular gear 33 and reducing the manufacturing difficulty of the annular gear 33. Compared with the mode that the speed regulating gear 35 is meshed with the external teeth of the gear ring, the speed regulating gear 35 is meshed with the internal teeth of the gear ring 33, the whole size of the differential gear speed regulating box 3 can be smaller, and the occupied space of equipment is saved.
In this embodiment, in the axial direction of the ring gear 33, the width of the ring gear 33 is greater than the sum of the width of the ring gear 35 and the width of the planet gear 32, so that the planet gear and the speed gear can be completely located in the ring gear and meshed with the ring gear, and the meshing of the planet gear and the speed gear with the ring gear is better, and the connection strength is higher.
Referring to fig. 1 to 3, the speed adjusting drive 4 includes a speed adjusting motor 41 and a motor reduction gear box 42. The speed-adjusting motor 41 is connected to a motor reduction gear box 42, and the motor reduction gear box 42 is used for adjusting the output rotation speed of the speed-adjusting motor 41.
The motor reduction gear box 42 includes a second case 421 and a primary planetary gear train provided in the second case 421. The second case 421 is fixed outside the first case 36. In the present embodiment, the second case 421 is fixed to the first case 36 by flanges and bolts, and in other embodiments, the second case 421 may be fixed to the first case 36 in other suitable manners.
The primary planetary gear train includes a reduction sun gear 423, a reduction planetary gear 424, a reduction ring gear 422, and a reduction planet carrier 425. The reduction ring gear 422 is fixed to the second case 421. The reduction sun gear 423 and the reduction planet gears 424 are both disposed inside the reduction ring gear 422. The reduction sun gear 423 is coaxially disposed with the reduction ring gear 422, and the reduction planetary gear 424 is disposed between the reduction sun gear 423 and the reduction ring gear 422 while being engaged with both the reduction sun gear 423 and the reduction ring gear 422. One end of the reduction planetary carrier 425 is rotatably connected with the reduction planetary wheels 424, and an output shaft of the reduction planetary carrier 425 extends out of the second case 421 to be connected with the speed adjusting gear 35.
The casing of the speed-adjusting motor 41 is fixedly connected with the second box 421, and the rotating shaft of the speed-adjusting motor 41 is fixedly connected with the input shaft of the reduction sun gear 423. Therefore, the speed reduction and torque increase of the speed regulating motor 41 are realized through the motor reduction gearbox 42, and the speed regulating requirement of the differential gear speed regulating box 3 can be met when the torque of the speed regulating motor 41 is smaller, so that in the embodiment, the speed regulating motor 41 can adopt a squirrel cage motor or a permanent magnet motor with smaller power and lower cost, and the cost of the speed regulating motor 41 is reduced. Meanwhile, the speed regulating motor 41 and the motor reduction gearbox 42 are integrated, so that the overall manufacturability and maintainability are better.
In this embodiment, the speed adjusting driver 4 and the speed adjusting gear 35 are provided with a plurality of speed adjusting gears, so that the torque required by a single speed adjusting motor 41 can be further reduced, the cost of the speed adjusting motor 41 is reduced, and meanwhile, when one speed adjusting driver 4 fails, another speed adjusting driver 4 can also work, and the fault tolerance of the speed adjusting driver 4 is improved.
Referring to fig. 1, the wind turbine drive train further comprises a coupling 5. The coupling 5 is connected between the output shaft of the differential gear box 3 (i.e., the output shaft of the sun gear 34) and the input shaft of the synchronous generator 6, thereby making the synchronous generator 6 independent from the differential gear box 3, and the synchronous generator 6 is excellent in manufacturability and maintainability.
Example 2
With reference to fig. 1 to 4, the present embodiment further discloses a topology structure based on embodiment 1, including a wind wheel 1, a speed increasing gearbox 2, a wind turbine generator set drive train and a power grid 10. The wind wheel 1 is connected with an input shaft of a speed increasing gear box 2, an output shaft of the speed increasing gear box 2 is connected with an input shaft of a transmission chain of the wind generating set, and a synchronous generator 6 of the transmission chain of the wind generating set is electrically connected with a power grid 10.
The drive train of the wind turbine generator system of this embodiment is the same as that of embodiment 1. The rotational speed of the wind wheel 1 is input into the differential gear speed regulating box 3 after being increased by the speed increasing gear box 2, and then is synthesized with the rotational speed of the speed regulating motor input into the differential gear speed regulating box 3 to form constant rotational speed to drive the synchronous generator 6 to generate power. The rotational speed of the synchronous generator 6 is thus always kept near the synchronous rotational speed, and no converter is required between the synchronous generator 6 and the power grid 10.
In this embodiment, the synchronous generator 6 is a 10.5kV synchronous generator, and the power grid 10 is a 10.5kV distributed power grid. The 10.5kV synchronous generator has mature and reliable technology, and the synchronous generator 6 has high electric energy quality and friendly power grid. In addition, 10.5kV is a common grid-connected voltage of distributed energy, so that electricity generated by the synchronous generator 6 can be directly connected to the grid without transformation.
In this embodiment, the topology further comprises a low voltage inverter 7 and a second transformer 8. The speed regulating motor 41, the low-voltage frequency converter 7, the second transformer 8 and the power grid 10 are connected in sequence. The second transformer 8 has a third input which is electrically connected to the power grid 10 and a third output which is electrically connected to the low-voltage converter 7. The second transformer 8 transforms the voltage of the power grid 10, then transmits the voltage to the low-voltage frequency converter 7, and transmits the voltage to the speed-regulating motor 41 to drive the speed-regulating motor 41 to work after the frequency is converted by the low-voltage frequency converter 7.
In this embodiment, the speed regulating motor 41 selects the existing mature 380V squirrel cage motor or permanent magnet motor in the market, the corresponding low-voltage frequency converter 7 is the 380V low-voltage frequency converter 7, the input voltage of the second transformer 8 is 10.5Kv, and the output voltage is 380V.
In addition, in other embodiments, other suitable motors may be used for the speed-adjusting motor 41, and the voltages of the corresponding low-voltage inverter 7 and the second transformer 8 are adapted to the speed-adjusting motor 41.
Example 3
This embodiment is substantially the same as embodiment 2 except that:
referring to fig. 5, in the present embodiment, the power grid 10 is a land wind power centralized power grid, and the grid-connected voltage is 35kV. The topology further comprises a first transformer 9, the first transformer 9 having a first input, a first output, a second input and a second output. The input voltage of the first input end is 10.5kV, and the output voltage of the first output end is 35kV. The input voltage of the second input end is 35kV, and the output voltage of the second output end is 10.5kV. The first input is electrically connected to the synchronous generator 6 and the first output is electrically connected to the grid 10. The second input is electrically connected to the grid 10 and the second output is electrically connected to the third input of the second transformer 8.
Thereby, the 10.5kV power generated by the synchronous generator 6 is boosted to 35kV by the first transformer 9 and then is incorporated into the power grid 10. The power of the 35kV power grid 10 is reduced to 10.5kV through a first transformer 9, is further reduced to 380V through a second transformer 8, and is sent to a low-voltage frequency converter 7 to drive a speed regulating motor 41 to rotate in a frequency conversion manner; the synchronous generator 6 and the speed regulating motor 41 share the first transformer 9, so that the first transformer 9 is fully utilized, and the cost is saved.
Example 4
This embodiment is substantially the same as embodiment 3 except that:
in this embodiment, the power grid 10 is an offshore wind power centralized power grid, and the grid-connected voltage is 66kV. The output voltage of the first output end is 66kV. The input voltage of the second input terminal is 66kV.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. The utility model provides a wind generating set drive chain, includes differential gear speed adjusting box, speed governing driver and synchronous generator, the speed governing driver with synchronous generator all with differential gear speed adjusting box links to each other, its characterized in that:
the differential gear speed regulating box comprises an annular gear, a planet carrier, a planet wheel, a sun wheel and a speed regulating gear, the speed regulating driver is connected with the speed regulating gear, the synchronous generator is connected with the sun wheel, and an input shaft of the planet carrier is used for receiving power from the wind wheel;
the planet wheel, the sun wheel and the speed regulating gear are all positioned in the annular gear, the sun wheel and the annular gear are coaxially arranged, the planet wheel is arranged on the planet carrier, the planet wheel is meshed with the annular gear and the sun wheel at the same time, and the speed regulating gear is meshed with the annular gear.
2. The wind turbine generator system of claim 1, wherein the speed-adjusting drive includes a speed-adjusting motor and a motor-reduction gearbox, an input shaft of the motor-reduction gearbox being coupled to a rotating shaft of the speed-adjusting motor, an output shaft of the motor-reduction gearbox being coupled to the speed-adjusting gear.
3. The wind generating set transmission chain as recited in claim 2, wherein the motor reduction gearbox comprises a primary planetary gear train including a reduction sun gear, a reduction planet carrier, a reduction planet gear and a reduction ring gear, the reduction sun gear and the reduction planet gear are both located in the reduction ring gear, a rotating shaft of the speed regulating motor is connected with the reduction sun gear, the reduction planet gear is disposed on the reduction planet carrier, and the reduction planet gear is meshed with the reduction sun gear and the reduction ring gear.
4. The wind generating set transmission chain as claimed in claim 1, wherein a plurality of speed adjusting drives are provided, the speed adjusting gears are connected with the speed adjusting drives in one-to-one correspondence, and the speed adjusting gears are meshed with the annular gear.
5. The wind turbine power train of claim 1, further comprising a coupling disposed between and coupled to the output shaft of the differential speed gearbox and the input shaft of the synchronous generator.
6. The drive train of a wind turbine generator system according to claim 1, wherein the ring gear has a width in an axial direction of the ring gear that is larger than a sum of the width of the planet wheels and the width of the timing gear.
7. A topology comprising a drive train of a wind park according to any of claims 1-6, wherein the topology further comprises an electrical grid, to which the synchronous generator is electrically connected.
8. The topology of claim 7, further comprising a first transformer having a first input and a first output, said synchronous generator being electrically connected to said first input, said power grid being electrically connected to said first output.
9. The topology of claim 8, further comprising a low voltage inverter and a second transformer; the first transformer is further provided with a second input end and a second output end, the second transformer is provided with a third input end and a third output end, the second input end is electrically connected with the power grid, the second output end is electrically connected with the third input end, the third output end is electrically connected with the low-voltage frequency converter, and the low-voltage frequency converter is electrically connected with a speed regulating motor of the speed regulating driver.
10. A topology as recited in claim 7, wherein said speed governing drive includes a speed governing motor, said topology further comprising a low voltage inverter and a second transformer, said second transformer having a third input and a third output, said third input being electrically connected to said power grid, said third output being electrically connected to said low voltage inverter, said low voltage inverter being electrically connected to a speed governing motor of said speed governing drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310159915.6A CN116201697A (en) | 2023-02-23 | 2023-02-23 | Transmission chain and topological structure of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310159915.6A CN116201697A (en) | 2023-02-23 | 2023-02-23 | Transmission chain and topological structure of wind generating set |
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| Publication Number | Publication Date |
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| CN116201697A true CN116201697A (en) | 2023-06-02 |
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| CN202310159915.6A Pending CN116201697A (en) | 2023-02-23 | 2023-02-23 | Transmission chain and topological structure of wind generating set |
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2023
- 2023-02-23 CN CN202310159915.6A patent/CN116201697A/en active Pending
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