KR101161788B1 - aerogenerator having coaxial shaft - Google Patents

Abstract

The present invention relates to a wind power generator, the coaxial wind power device according to the present invention includes a rotating body that is rotated by the wind; A gear train including a hollow input shaft connected to the rotating body and a hollow output shaft which increases and outputs a rotational speed input from the rotating body through the input shaft and is coaxially aligned with the input shaft; A generator having a hollow rotating shaft connected coaxially with the output shaft of the gear train and a rotor coupled to the rotating shaft to produce electricity by rotation of the rotating shaft; It characterized in that it comprises a wire for supplying power by electrically connecting the generator and the rotating body through the hollow of the input shaft and output shaft of the gear train and the generator rotation shaft.

Description

Coaxial Wind Power Generator {aerogenerator having coaxial shaft}

The present invention relates to a generator, and more particularly to a wind turbine.

Wind power is considered to be the most economical and environmentally friendly way of generating wind by turning windmills into natural winds and rotating the shaft of the generator using the rotational force of the windmills.

Wind power generators for such wind power generation is introduced in various forms, the most common type is the wind turbine of the horizontal axis in the form of wind.

The upwind wind turbine is one of the most common types of Horizontal-Axis Wind Turbine (HAWT), where the axis of rotation of the wing is parallel to the wind flow, and the wing is placed at the rear of the fuselage. Compared to the downwind type, it is an upwind type generator that receives the wind blowing from the wings.

This upwind type horizontal axis wind turbine is usually installed at a top of a tower such that a nacelle can be rotated horizontally about a vertical axis, and one or more blades are provided at a hub of the body end. It is installed, the rotation shaft (rotor) is installed to the rear of the hub, that is, the inside of the body, it is configured in such a form that the speed gear train and the generator is sequentially connected to the end of the rotation shaft.

1 of the accompanying drawings shows an example of the configuration of a conventional wind turbine, the rotary shaft of the wind turbine is composed of a main shaft 15, a low speed shaft 16, the output shaft 17, such a rotating shaft As shown in Fig. 1, they are usually connected in a biaxial type.

The biggest reason for the parallel axis of rotation is to supply some of the electricity produced into the hub 12.

That is, for the initial driving of the wind turbine, etc., the hub 12 and the generator 14 should be connected to the electric wire 19 to supply electricity. In this case, the electric wire 19 is connected to the gear train 13. The low speed shaft 16 and the main shaft 15 can be connected through the core part, but since the generator 14 needs to be connected to the outside, the rotating shaft of the wind turbine is a parallel shaft type. It is composed.

The gear train 13 is a technology intensive device requiring low speed, high torque, high reliability, high speed ratio and high power density. Therefore, it is common that the gear train 13 uses a planetary gear unit which is advantageous for this.

However, when connected in parallel shaft type due to the above reason, the helical gear unit, which is disadvantageous to the high speed ratio and the high power density, cannot be used for the last gear stage, which causes a problem of inhibiting the power density of the wind turbine.

In addition, since the geartrain 13 and the generator 14 are fixed by separate restraining means, there is a problem in that an axial alignment error occurs severely in external lateral load and torque load.

In addition, the occurrence of such an axis alignment error directly affects the tooth surface damage of the gear inside the gear train, which is a major cause of the decrease in reliability of the wind turbine.

And the gear train provided in the wind turbine is composed of a combination of planetary gear units of 1 to 3 stages, each planetary gear unit is composed of a planetary gear and the sun gear, ring gear, carrier, which are the connecting elements of the planetary gear do.

However, the combination of simple planetary gear units constructed in the conventional gear train is not only suitable for the gear train for wind power generation that requires a high speed ratio, but also adds to the weight of the gear train so as to increase the reliability of the wind turbine. Not only can cause a big problem, but also bulky, life expectancy also has a problem that does not meet the expectations of the wind turbine.

The present invention is to solve the above problems, the present invention is to provide a coaxial wind turbine generator that can connect the rotational axis of the gear train and the generator of the wind turbine generator on the same axis.

Another object of the present invention is to provide a coaxial wind power generator having a gear train that can ensure reliability under operating conditions of high power, low speed, and high torque, and can also meet life expectancy.

In order to achieve the above object, a coaxial wind power device according to the present invention includes a rotating body rotating by wind power; A gear train including a hollow input shaft connected to the rotating body and a hollow output shaft which increases and outputs a rotational speed input from the rotating body through the input shaft and is coaxially aligned with the input shaft; A generator having a hollow rotating shaft connected coaxially with the output shaft of the gear train and a rotor coupled to the rotating shaft to produce electricity by rotation of the rotating shaft; It characterized in that it comprises a wire for supplying power by electrically connecting the generator and the rotating body through the hollow of the input shaft and output shaft of the gear train and the generator rotation shaft.

Coaxial wind power generator according to the present invention can reduce the total weight of the wind power generator by connecting the gear train and the generator in the same axis, and can reduce the shaft alignment error between the gear train and the generator caused by damage to the gear The probability of failure can be reduced.

In addition, by connecting the connection between the wind turbine hub and the generator through the wiring pipe through the rotating shaft of the gear train and the rotating shaft through hole of the generator there is an advantage that can facilitate the wiring of the wire.

In addition, when the gear train and the generator of the wind turbine are integrally formed, the wind turbine can be easily manufactured and repaired, and the manufacturing and maintenance costs can be reduced.

In addition, the speed ratio is effectively increased by using planetary gear units instead of helical gear units at the last gear stage of the gear train of the wind turbine. Wind turbines are maximized by maximizing the power branch by varying two to three planetary gear units. It can greatly improve the power density, and can guarantee the reliability of 99% or more under the operation condition of high power, low speed, and high torque, and can also meet the life expectancy of 20 years or more.

1 is a view showing an example of the configuration of a conventional wind power generator.
2 is a view schematically showing the configuration of a wind turbine generator according to an embodiment of the present invention.
3 is a view showing the configuration of a wind power generator according to another embodiment of the present invention.
4 is a conceptual diagram illustrating a series coupling method of the gear train of the wind turbine generator according to the preferred embodiment of the present invention.
5 to 8 show embodiments of the configuration of the gear train of the series coupling method of Figure 4 of the configuration of the gear train according to the present invention.
9 is a conceptual diagram illustrating a rear coupling forming method of the gear train of the wind turbine generator according to the preferred embodiment of the present invention.
10 and 11 show embodiments of the configuration of the gear train of the rear coupling coupling method of Figure 9 of the configuration of the gear train according to the present invention.
12 is a conceptual diagram illustrating a forward coupling forming method of the gear train of the wind turbine generator according to the preferred embodiment of the present invention.
13 to 16 show embodiments of the configuration of the gear train of the front coupling coupling method of Figure 12 of the configuration of the gear train according to the present invention.
17 is a cross-sectional view illustrating a structure of a series gear train in a gear train of a conventional parallel shaft wind turbine generator.
18 is a cross-sectional view showing the structure of a flexible gear train of the gear train of a conventional parallel shaft wind turbine generator.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the preferred embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the preferred embodiments disclosed below, but can be implemented in various forms, and only the present preferred embodiments make the disclosure of the present invention complete, and are common in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 2 shows the configuration of a wind turbine generator according to a preferred embodiment of the present invention, the wind turbine generator 100 of the present invention is largely composed of a rotor and the body.

The rotating body is composed of a hub 120 and a plurality of wings 110 installed radially extending to the hub 120. Here, the wing 110 and the hub 120 may be applied as it is used in the conventional wind power generator. The configuration and operation of the wing 110 and the hub 120 has already been introduced through various documents, so detailed description thereof will be omitted.

The body is largely composed of a gear train 200, a generator 300 and a case (not shown).

The gear train 200 is for increasing the rotational speed input from the rotating body at high speed, and the generator 300 is a rotor 310 by using the rotational speed increased at a high speed by the gear train 200. It is an apparatus which produces electricity by rotating (refer FIG. 5).

The generator 300 is largely composed of a generator rotating shaft 320 and the rotor 310. The rotary shaft 320 is coaxially connected to the output shaft 220 of the gear train 200 is rotated at high speed by receiving a rotational force. In addition, the rotor 310 is disposed outside the rotation shaft 320, and generates electricity as the rotation shaft 320 rotates at a high speed.

The gear train 200 is connected to the central portion of the hub 120 and rotates to increase the low speed rotational force of the blade 110 at high speed, and the rotational force input to the input shaft 210 at high speed It is composed of a planetary gear unit for increasing the speed and the output shaft 220 which is an output terminal for outputting the rotational force is increased at high speed by the planetary gear unit.

The input shaft 210, the low speed shaft 212, the middle speed shaft 215, and the output shaft 220 of the gear train 200 are coaxially connected, and the output shaft 220 is connected to the generator 300 by the coupler 420. It is connected coaxially with the generator rotary shaft 320 which is coupled to the rotor 310 (see FIG. 5). Here, the input shaft 210, the low speed shaft 212, the middle speed shaft 215, the output shaft 220, the generator rotation shaft 320 has a structure in which a hollow is formed in the central shaft portion (Core Part) to penetrate in the axial direction Each axis is connected sequentially on the coaxial line.

In addition, the wire 400 for supplying the power of the generator 300 to the hub 120 is the input shaft 210 and the low speed shaft 212, the intermediate speed shaft 215, the output shaft 220, generator rotation shaft 320 The hub 120 and the generator 300 are electrically connected to each other through the hollow portion of the). The wire 400 directly connects the hub 120 and the generator 300 by directly passing through the hollow of the input shaft 210, the low speed shaft 212, the middle speed shaft 215, the output shaft 220, and the generator rotation shaft 320. Although, the wire pipe 410 may be installed in the hollow of the input shaft 210, the low speed shaft 212, the intermediate speed shaft 215, the output shaft 220, and the generator rotation shaft 320, and then through the wire pipe 410. By connecting the wires 400, it is desirable to prevent rotational interference that may occur from the axes.

On the other hand, the wind turbine generator of the above embodiment is made of a structure in which the gear train 200 and the generator 300 are spaced apart from each other, as shown in Figure 3 the generator 300 on the rear surface of the gear train 200 It can also be configured to be integrally fixed. In this case, the rotation shaft 320 of the generator 300 may be connected to each other by means such as a coupler (not shown) to the output shaft 220 of the gear train 200, but the output shaft 220 and the generator rotation shaft ( 320 may be made in one piece. Of course, the wind turbine generator of this second embodiment also has an input shaft 210 and a low speed shaft 212, a middle speed shaft 215, and an output shaft 220 of the gear train 200. Consists of a shaft is connected coaxially to each other, the wire 400 connected to the generator 300 is connected to the hub 120 through the hollow portion of each shaft to supply power to rotate the hub 120.

As described above, in the wind turbine generator of the present invention, the shaft of the gear train 200 and the rotating shaft 320 of the generator 300 are connected on the same axis, and the hub 120 and the generator 300 are connected through the connected shafts. Since the wire 400 is installed, it is possible to reduce the total weight of the wind turbine, and reduce the shaft alignment error between the gear train and the generator, thereby reducing the probability of failure due to damage to the gear.

 In addition, since the shafts of the gear train 200 and the shafts of the generator 300 are directly connected on the same axis, the wind turbine generator of the present invention does not require a conventional helical gear stage (not shown), and thus the weight of the wind turbine generator. This can reduce the power consumption and improve the power density. This will be described in more detail in the description of the configuration of the gear train 200 below.

On the other hand, the gear train 200 constituting the wind power generator of the present invention has a planetary gear unit consisting of a sun gear, a carrier, a planetary gear, a ring gear is composed of three stages to increase the low-speed rotational force at high speed.

Gear trains for wind turbines typically require 20 years of service life with 99% reliability under high power, low speed and high torque operating conditions. Design conditions vary from medium to large, and it is not easy to meet these conditions with conventional planetary gear unit combinations.

Accordingly, the present invention proposes a configuration of a gear train for a wind turbine suitable for design requirements by combining three planetary gear units properly. Three planetary gear units can be combined into three types. A series coupling method in which three planetary gear units are connected in series, and the second and third planetary gear units are connected rearwards. Rear coupled coupling method, this is a front coupled coupling method that combines the first and second planetary gear units and combines them.

(1) Serial Gear Train

4 is a conceptual diagram illustrating a series coupling method, wherein a series gear train is a method of connecting three planetary gear units (PGU1, PGU2, PGU3) in series. That is, in the series coupling method, one of the three elements of the primary spindle (i) and the first planetary gear unit (PGU1), a carrier, a sun gear, and a ring gear (optionally selected from three elements) is connected, and the other ( Means any one of the other two elements except the one already selected) and the case fixing structure, and the other one (the last remaining one of the three elements) connects each of the three connecting elements of the second planetary gear unit. (Carrier, sun gear, ring gear), the other of the second planetary gear unit is connected to the case fixing structure and the other one of each of the three connecting elements of the third planetary gear unit (carrier, sun gear, ring Gear). And, the other one of the third planetary gear unit is connected to the case fixing structure and the other is connected to the output shaft (o) to constitute the whole.

However, not all of these configurations are useful as wind power gear trains having a high speed ratio such that the overall speed ratio is 50 to 200. FIG. 5 to FIG. It is preferred to have the same structures as the illustrated embodiments.

1) Serial Type A

FIG. 5 is a first embodiment of the in-line gear train, wherein the first planetary gear unit includes a first carrier 231, a first planetary gear 232, a first ring gear 233, and a first sun gear 234. The second planetary gear unit includes a second carrier 241, a second planetary gear 242, a second ring gear 243, and a second sun gear 244. The third planetary gear unit includes a third carrier 251, a third planetary gear 252, a third ring gear 253, and a third sun gear 254.

Looking at the connection relationship between the first, second, and third planetary gear units, first, the center of the first planetary gear unit is fixedly coupled to the input shaft 210 and the peripheral portion of the first carrier 231 The first planetary gear 232 is rotatably connected to a plurality of formed carrier shafts 235 (for example, three). The first ring gear 233 is fixed to the case 201, and the first sun gear 234 is connected to the center of the second carrier 241 of the second planetary gear unit via the low speed shaft 212. do. The first planetary gear 232 is engaged with the first ring gear 233 and the first sun gear 234 to transmit rotational force to the first sun gear 234.

In addition, the second planetary gear unit may include a second ring gear 243 and the second planetary gears 242 connected to the carrier shaft 245 of the second carrier 241 and the case 201. The second sun gear 244 is engaged between the second sun gear 244 to transmit rotational force, and the second sun gear 244 is a third carrier 251 of the third planetary gear unit via the medium speed shaft 215. Connected to transmit torque.

The third planetary gear unit includes a third ring gear 253 and a third ring gear in which the third planetary gears 252 connected to the carrier shaft 255 of the third carrier 251 are fixed to the case 201. The third sun gear 254 is engaged between the three sun gears 254 to transmit rotational force to the third sun gear 254, and the third sun gear 254 is connected to the output shaft 220 to rotate the output shaft 220.

The output shaft 220 is connected to the rotating shaft 320 of the generator 300 by a coupler 420 to transmit a rotational force.

The serial gear train thus configured operates as follows. First, when the input shaft 210 rotates, the first carrier 231 connected to the input shaft 210 rotates, thereby rotating the first planetary gears 232 along the first ring gear 233. The rotation force is transmitted to the first sun gear 234, and the first sun gear 234, the low speed shaft 212, and the second carrier 241 rotate together. As the second carrier 241 rotates, the second planetary gears 242 rotate along the second ring gear 243 to rotate the second sun gear 244. As the second sun gear 244 rotates, the intermediate speed shaft 215 and the third carrier 251 coupled thereto rotate, so that the third planetary gear 252 follows the third ring gear 253. While rotating, the rotational force is transmitted to the third sun gear 254 and the output shaft 220.

As described above, the gear train 200 is composed of three stages of planetary gear units to increase the rotational force input at a low speed to output to the output shaft 220 at a high speed.

2) Serial Type B

Next, a second embodiment of the in-line gear train will be described with reference to FIG. 6.

The series gear train of this second embodiment has the same connection structure as the first planetary gear unit and the second planetary gear unit compared to the series gear train of the first embodiment described above, but the third ring gear of the third planetary gear unit ( 253 is fixed to the outer periphery of the ring gear connecting member 256, which is coupled to the medium speed shaft 215 and is not fixed to the case 201, rotates together with the ring gear connecting member 256, and the third planetary gear ( 252 is coupled to the carrier shaft 255 fixed to the case 201 and rotates, and the third planetary gear 252 is configured to mesh with the third ring gear 253 and the third sun gear 254.

Therefore, when the intermediate speed shaft 215 and the ring gear connecting member 256 rotate by the rotation of the second sun gear 244, the third ring gear 253 fixed to the ring gear connecting member 256 becomes the third planetary planet. The third planetary gears 252 are rotated while rotating outside the gears 252, and the third sun gear 254 is rotated by the rotation of the third planetary gears 252 to transmit a rotational force to the output shaft 220.

3) Serial Type C

7 shows a third embodiment of the in-line gear train. The in-line gear train of the third embodiment has the same configuration as that of the first and third planetary gear units compared to the in-line gear train of the first embodiment. The second ring gear 243 of the second planetary gear unit is fixed to the outer circumference of the ring gear connecting member 246 without being fixed to the case 201 and rotates together with the ring gear connecting member 246, and the second planetary gear 242 is connected to the carrier shaft 245 of the carrier plate 203 fixed to the case 201, the second planetary gear 242 is the second ring gear 243 and the second sun gear 244 It is made of a structure fitted to the.

Therefore, when the ring gear connecting member 246 is rotated by the rotation of the first sun gear 234, the second ring gear 243 fixed to the ring gear connecting member 246 is outside the second planetary gears 242. The second planetary gear 242 is rotated while rotating at, and the rotational force is transmitted to the second sun gear 244 by the rotation of the second planetary gear 242 to rotate the intermediate speed shaft 215 and the third carrier 251. Done.

4) Serial Type D

The in-line gear train of the fourth embodiment shown in FIG. 8 is a mixture of the second and third in-line gear train embodiments shown in FIGS. 6 and 7, and only the first ring gear 233 of the first planetary gear unit. A ring gear connecting member 246 coupled to the case 201 and connected to the low speed shaft 212 may be connected to the second ring gear 243 of the second planetary gear unit and the third ring gear 253 of the third planetary gear unit, respectively. And is coupled to the outer circumference of the ring gear connecting member 256 connected to the medium speed shaft 215 to rotate together with the ring gear connecting members 246 and 256, and the second planetary gear 242 and the third planetary gear 252. ) Is rotatably connected to the carrier shaft 245 of the carrier plate 203 fixed inside the case 201 and the carrier shaft 255 of the rear surface of the case 201.

(2) Rear Formed Gear Train

9 is a conceptual view illustrating a rear coupling coupling method, in which a rear coupling gear train connects a first planetary gear unit PGU1 to an input shaft i of three planetary gear units, and a second and third planetary gear units ( PGU2 and PGU3) are connected to each other, and the second planetary gear unit PGU2 is coupled to the output shaft o. More specifically, the input spindle i is connected to any one of the three connecting elements (sun gear, ring gear, carrier) of the first planetary gear unit PGU1 (sun gear, ring gear, carrier) and the first planetary gear. The other of the unit connects with the case fixing structure. Then, any one of the three connecting elements (sun gear, ring gear, carrier) of the second planetary gear unit (PGU2) and one of the three connecting elements (sun gear, ring gear, carrier) of the third planetary gear unit, (Combination 1), of the other three connection elements (sun gear, ring gear, carrier) of the second planetary gear unit (PGU2) and of the three connection elements (sun gear, ring gear, carrier) of the third planetary gear unit (PGU3) The other one is connected to each other (coupling 2), the other one of the three connecting elements (sun gear, ring gear, carrier) of the first planetary gear unit (PGU1) is connected to the coupling 1 (coupling 3), the third planetary gear Connect the other one of the three connecting elements (sun gear, ring gear, carrier) of the unit PGU3 with the case fixing structure, and connect the other one of the three connecting elements (sun gear, ring gear, carrier) of the second planetary gear unit PGU2. It is connected to the output shaft (o) to form the whole.

However, not all of these configurations are useful as wind turbine gear trains having a high speed ratio such that the overall speed ratio (output ratio to the input speed) is about 50 to 200. It is preferred to be provided in the form as shown.

1) Rear Flexible Forming Type A

FIG. 10 shows a first embodiment of a rear soft gear train. The first sun gear 234, the first planetary gear 232, the first ring gear 233, and the first gear in the embodiments of the gear train described below (the same applies to the embodiments of the front-molded gear train). The carriers 231 are components of the first planetary gear unit, and the second sun gear 244, the second planetary gear 242, the second ring gear 243, and the second carrier 241 are the second planetary gear unit. The third sun gear 254, the third planetary gear 252, the third ring gear 253, and the carrier shaft 255 are components of the third planetary gear unit.

In the rear flexible gear train illustrated in FIG. 10, a first carrier 231 of the first planetary gear unit is connected to an input shaft 210, and a first carrier shaft 235 is formed on the first carrier 231. The planetary gears 232 are rotatably connected, the first ring gear 233 is fixed to the case 201, and the first sun gear 234 is a ring gear connecting member 246 via the low speed shaft 212. Combined with. The second ring gear 243 and the third ring gear 253 of the third planetary gear unit are fixed to the outer circumferential surface of the ring gear connecting member 246 together. The third ring gear 253 is engaged with the third planetary gears 252 connected to the carrier shaft 255 of the case 201, and the third planetary gears 252 are connected to the intermediate speed shaft 215. The third sun gears 254 connected to the second carrier 241 are engaged with each other. The second ring gear 243 is engaged with the second planetary gears 242 connected to the carrier shaft 245 of the second carrier 241, and the second planetary gears 242 are output shafts 220. ) Is meshed with the second sun gear 244 coupled with

The rear forming gear train configured as described above operates as follows.

When the input shaft 210 rotates, the first carrier 231 connected thereto rotates, whereby the first planetary gear 232 revolves and rotates along the inner circumference of the first ring gear 233, thereby forming the first sun gear. And transmits a rotational force to 234. As the first sun gear 234 rotates, the low speed shaft 212 and the ring gear connecting member 246 rotate, and the second ring gear 243 and the third ring fixed to the ring gear connecting member 246 are rotated. The gear 253 rotates.

At this time, the third ring gear 253 rotates the third planetary gear 252 to transmit the rotational force to the third sun gear 254, and the intermediate speed shaft 215 and the first by the rotation of the third sun gear 254. The two carriers 241 rotate. At the same time, the second ring gear 243 rotates the second planetary gears 242, and the second planetary gear 242 transmits a rotational force to the second sun gear 244 to rotate the output shaft 220.

2) Rear Flexible Forming B Type

Fig. 11 shows a second embodiment of the rear flexible gear train, and the rear flexible gear train according to the second embodiment is configured of the first and third planetary gear units in comparison with the rear soft gear train of the first embodiment described above. Is similar, but the second gear 241 is connected to the low speed shaft 212, the second carrier 241 is coupled, the ring gear connecting member 256, the second ring gear 243 is connected to the intermediate speed shaft 215 Rotation is coupled to the outer peripheral portion of the), the second planetary gear 242 is made of a structure engaged with the second ring gear 243 and the second sun gear 244, the third ring gear 253 is the first There is a difference in that the structure is coupled to the extension portion 247 fixed to the outer peripheral portion of the two carriers 241 to rotate.

Therefore, when the first sun gear 234 rotates and the low speed shaft 212 and the second carrier 241 rotate, the second planetary gear 242 and the third ring gear 253 become the second carrier 241. And the third planetary gear 252 is rotated by the rotation of the third ring gear 253 to transmit the rotational force to the third sun gear 254. When the rotational force is transmitted to the third sun gear 254, the ring gear connecting member 256 rotates, and the second ring gear 243 coupled to the ring gear connecting member 256 rotates to form the second planetary gear. 242 is rotated. As the second planetary gear 242 rotates, a rotational force is transmitted to the second sun gear 244, and the output shaft 220 rotates.

(3) Forward Formed Gear Train

12 is a conceptual view illustrating a front coupling forming method, wherein the front forming gear train softens the first and second planetary gear units PGU1 and PGU2 among the three planetary gear units and the third planetary gear unit PGU3. Is coupled to the output shaft (o).

Specifically, any one of the three connecting elements (ring gear, sun gear, carrier) of the first planetary gear unit PGU1 and any of the three connecting elements (ring gear, sun gear, carrier) of the second planetary gear unit PGU2 One is connected to each other (coupling 1), the other of the three connecting elements (ring gear, sun gear, carrier) of the first planetary gear unit (PGU1) and the three connecting elements of the second planetary gear unit (ring gear, sun gear, carrier ) Connect the other of the two to each other (coupling 2) and the input spindle (i) to coupling 1. Then, the other one of the three connecting elements (ring gear, sun gear, carrier) of the first planetary gear unit (PGU1) and the case fixing structure, and the other one of the second planetary gear unit (PGU2) to the third planetary gear unit Connect one of the three connecting elements (ring gear, sun gear, carrier) of (PGU3), and the other of the three connecting elements (ring gear, sun gear, carrier) of the third planetary gear unit (PGU3) to the case fixing structure The other one of the three connecting elements (ring gear, sun gear, carrier) of the third planetary gear unit is connected to the output shaft to form a whole.

However, not all of these configurations are useful as wind turbine gear trains having a high speed ratio such that the overall speed ratio (output ratio to the input speed) is about 50 to 200 and is shown in FIGS. 13 to 16. It is preferably provided in the form as shown.

1) Front Flexible Forming Type A

First, a first embodiment of the front-molded gear train shown in FIG. 13 will be described.

In the front flexible gear train illustrated in FIG. 13, an extension 237 coupled to an input shaft 210 of a central portion of the first carrier 231 of the first planetary gear unit and coupled to an outer circumferential portion of the first carrier 231. The second ring gear 243 of the second planetary gear unit is coupled thereto. First planetary gears 232 are rotatably connected to a carrier shaft 235 formed at an intermediate portion of the first carrier 231, and the first planetary gears 232 are ring gears connected to the low speed shaft 212. The first ring gear 233 coupled to the outer circumference of the connecting member 246 and the first sun gear 234 connected to the medium speed shaft 215 are respectively engaged. The second ring gear 243 is engaged with the second planetary gears 242 connected to the carrier shaft 245 of the carrier plate 203 fixed to the case 201 to form the second planetary gears 242. The second planetary gear 242 is engaged with the second sun gear 244 coupled to the center of the ring gear connecting member 246 via the low speed shaft 212.

The rear end of the intermediate speed shaft 215 coupled to the first sun gear 234 is connected to the ring gear connecting member 256, and the third ring gear 253 is coupled to the outer circumference of the ring gear connecting member 256. . The third ring gear 253 is engaged with the third planetary gears 252 connected to the carrier shaft 255 formed on the rear surface of the case 201. The third planetary gears 252 are engaged with the third sun gear 254 coupled with the output shaft 220 to transmit rotational force.

The forward forming gear train according to the first embodiment configured as described above operates as follows.

When the input shaft 210 rotates, the first carrier 231 connected thereto rotates, thereby rotating the first planetary gear 232 and the second ring gear 243. The second ring gear 243 rotates the second planetary gear 242 to transmit rotational force to the third sun gear 254, and the low speed shaft 212 and the ring gear are connected by the rotation of the third sun gear 254. Member 246 is rotated. The first ring gear 233 transmits rotational force to the first planetary gears 232 by the rotation of the ring gear connecting member 246, and the first planetary gear 232 is connected to the first sun gear 234. By transmitting a rotational force to rotate the intermediate speed shaft 215.

As the medium speed shaft 215 rotates, the ring gear connecting member 256 fixed to the medium speed shaft 215 rotates, and accordingly, the third ring gear 253 rotates the third planetary gear 252. The rotational force of the third planetary gear 252 is transmitted to the third sun gear 254 so that the output shaft 220 rotates.

2) Front Flexible Forming B Type

Fig. 14 shows a second embodiment of the front flexible gear train, wherein the front flexible gear train according to the second embodiment is connected to the first and second planetary gear units in comparison with the front flexible gear train of the first embodiment described above. The structure is similar, but the intermediate speed shaft 215 is coupled to the third carrier 251 of the third planetary gear unit, the third ring gear 253 is fixed to the case 201, the third carrier 251 There is a difference in that the connected third planetary gears 252 are configured to engage with the third ring gear 253 and the third sun gear 254.

Therefore, when the third carrier 251 is rotated by the rotation of the first sun gear 234 and the middle speed shaft 215, the third planetary gears 252 revolve along the inner circumference of the third ring gear 253. And rotates the output shaft 220 by transmitting rotational force to the third sun gear 254 while rotating.

3) Forward Flexible Forming C Type

FIG. 15 illustrates a third embodiment of the front-molded gear train, in which the front-geared gear train of the third embodiment is coupled with a ring gear connecting member 236 to the input shaft 210, and the ring gear connecting member 236. FIG. The outer ring portion of the first ring gear 233 and the second ring gear 243 is coupled together to form a structure that rotates. The first ring gear 233 is meshed with the first planetary gears 232 rotatably connected to an outer circumference of the first carrier 231, and the second ring gear 243 is a carrier plate of the case 201. It is engaged with the second planetary gear 242 connected to the carrier shaft 245 of 203 transmits a rotational force. The first sun gear 234 is connected to the ring gear connecting member 256 via the medium speed shaft 215, the third ring gear 253 is fixed to the outer peripheral portion of the ring gear connecting member 256, the case ( The third planetary gear 252 connected to the carrier shaft 255 fixed to 201 is engaged with the third ring gear 253 and the third sun gear 254 to transmit rotational force to the output shaft 220.

4) Forward Forming D Type

16 shows a fourth embodiment of the front flexible gear train, in which the connection structure of the first and second planetary gear units is the same as that of the front flexible gear train of the third embodiment, and the connection structure of the third planetary gear unit is It is the same as the front-molded gear train of the second embodiment described above.

That is, the gear train of this embodiment is coupled to the case 201, the ring gear connecting member 236 coupled to the input shaft 210 to receive the rotational force, and the outer peripheral surface of the ring gear connecting member 236 together. The second ring gear 243 is rotated by being connected to the first ring gear 233 and the second ring gear 243 that rotate, and the carrier shaft 245 of the carrier plate 203 fixed to the case 201. ) Second planetary gear 242 meshed with and rotated, a second sun gear 244 meshed with the second planetary gear 242 at the center of the case 201 to receive rotational force, and a rear end of the second planetary gear 242; A hollow low speed shaft 212 coupled to the two-wire gear 244 and rotating; a first carrier 231 coupled to the front end of the low speed shaft 212 and rotating together with the low speed shaft 212; A plurality of first rotatably connected to the plurality of carrier shafts 235 formed on one carrier 231 and engaged with the first ring gear 233 to rotate; The first gear 234 and the first sun gear 234 that are engaged with the first planetary gears 232 at the center of the case 201 to receive rotational force, and a front end portion is connected to the first sun gear 234. A hollow intermediate speed shaft 215 rotating together with the first sun gear 234, and a third carrier 251 coupled to the rear end of the middle speed shaft 215 and rotating together with the middle speed shaft 215. And a plurality of third planetary gears 252 rotatably connected to the plurality of carrier shafts 255 formed on the third carrier 251, and fixed to the case 201 and the third planetary gears 252. A third ring gear 253 that is engaged with each other, and a third sun gear that is engaged with the third planetary gears 252 at the center of the case 201 to receive rotational force and is fixed to the output shaft 220. 254.

(4) Performance comparison

Hereinafter, a result of comparing the configuration and performance of the coaxial wind turbine 100 and the conventional parallel shaft wind turbine according to an embodiment of the present invention as described above will be described. In the conventional parallel shaft wind turbine generator type, as shown in FIG. 17, two planetary gear units 13a and 13b are connected in series, and the last stage is connected to the helical gear unit 13c. In the flexible molding, as shown in FIG. 18, two planetary gear units 13a and 13b are connected to each other, and a type in which a helical gear unit 13c is connected to the last stage is applied. In FIGS. 17 and 18, reference numerals 14 and 17 denote generators and output shafts, respectively.

Tables 1, 2 and 3 show the results of the optimum design of gearbox weight reduction based on AGMA2001 and ISO281 standards. The material of the gear was Britnel hardness 700 and the life factor of gear tooth bending / surface pressure strength was set to 20 years at 99.99% reliability. The lifetime of each planetary gear unit is designed to be over 9 years at 99.9%.

Comparison of predicted weight of parallel and coaxial wind turbines Gear Train Gross Weight (Ton) Power (MW) One 2 3 4 5 6 7 8 Parallel axis  Serial 8.8 20.1 36.4 59.7 97.7 161.3 287.8 - Soft molding 9.3 20.9 38.4 63.9 105.1 174.8 340.0 - Coaxial Serial Type-A 9.4 17.6 28.0 43.1 64.3 98.2 165.5 385.7 Serial Type-B 8.1 16.8 28.8 44.0 67.3 104.7 180.3 419.2 Serial Type-C 8.8 18.3 29.8 46.4 72.6 115.3 194.4 433.9 Serial Type-D 8.4 18.0 31.3 49.3 78.9 123.4 210.8 523.2 Posterior Formings-A 8.7 17.5 28.6 43.2 64.4 100.3 169.9 386.7 Posterior Formings-B 7.9 16.3 27.7 42.3 64.9 100.9 175.4 416.9 Forward Flexible Molding-A 7.6 16.4 28.6 45.5 70.7 114.9 195.5 437.1 Forward Flexible Molding-B 7.0 16.6 30.8 49.1 71.0 100.9 131.9 166.2 Forward Flexible Molding-C 8.2 17.4 29.9 46.6 72.2 112.3 189.3 408.0 Forward Flexible Molding-D 8.9 18.1 30.0 45.3 68.7 105.7 177.3 390.1

Table 1 is a table according to the present experiment as a result of comparing the total weight of the wind turbine generator having a conventional parallel shaft form and the coaxial wind turbine generator 100 for the ten preferred embodiments of the present invention through a design simulation As shown in FIG. 1, the total weight of the coaxial wind power generator 100 according to the present invention has a total weight reduction effect of about 15 to 30% compared to the conventional wind power generator. In particular, the higher the power it can be seen that more effective.

Comparison of Power Density for Parallel and Coaxial Wind Power Plants Power density (KW / ton) Power (MW) One 2 3 4 5 6 7 8 Parallel axis  Serial 113.1 99.7 82.5 67.0 51.2 37.2 24.3 Soft molding 107.6 95.8 78.1 62.6 47.6 34.3 20.6 Coaxial Serial Type-A 106.6 113.8 107.1 92.7 77.7 61.1 42.3 20.7 Serial Type-B 124.0 119.2 104.3 90.9 74.3 57.3 38.8 19.1 Serial Type-C 113.6 109.5 100.5 86.2 68.9 52.0 36.0 18.4 Serial Type-D 119.3 111.3 95.7 81.2 63.4 48.6 33.2 15.3 Posterior Formings-A 114.6 114.2 104.9 92.7 77.7 59.8 41.2 20.7 Posterior Formings-B 126.1 122.3 108.5 94.6 77.0 59.5 39.9 19.2 Forward Flexible Molding-A 131.3 122.1 104.9 87.9 70.7 52.2 35.8 18.3 Forward Flexible Molding-B 143.8 120.5 97.5 81.4 70.5 59.5 53.1 48.1 Forward Flexible Molding-C 121.5 114.7 100.3 85.9 69.3 53.4 37.0 19.6 Forward Flexible Molding-D 111.9 110.3 99.9 88.3 72.8 56.7 39.5 20.5

Table 2 is a result of comparing the power density of the wind power generator having a conventional parallel axis form and the coaxial wind power generator 100 for the ten preferred embodiments of the present invention through a design simulation, According to the table, when the power density of the coaxial wind turbine 100 according to the present invention is more than 2MW power compared to the conventional wind turbine, the power density appears to be improved to 26.0 ~ 42%. It can be seen that the higher the power, the more the power density increases.

Comparison of the life time of parallel and coaxial wind turbines Life time (yr) Power (MW) One 2 3 4 5 6 7 8 Parallel axis  Serial 21.7 20.6 19.6 18.8 24.4 22.2 20.8 - Soft molding 21.3 20.1 19.3 18.4 24.0 22.2 20.3 - Coaxial Serial Type-A 46.7 24.4 22.6 25.0 25.4 27.7 20.8 19.1 Serial Type-B 24.6 28.8 21.8 25.0 22.8 24.0 19.8 19.0 Serial Type-C 21.9 26.0 27.3 26.8 21.9 20.3 19.5 19.0 Serial Type-D 28.2 23.1 25.3 23.4 22.9 21.4 19.2 20.2 Posterior Formings-A 46.7 38.9 37.8 23.0 28.0 23.8 20.2 19.3 Posterior Formings-B 26.8 25.1 25.1 21.6 27.3 21.8 20.3 19.0 Forward Flexible Molding-A 19.0 22.4 21.8 20.3 20.8 21.3 19.8 20.8 Forward Flexible Molding-B 27.8 24.5 21.5 21.3 20.8 21.1 20.3 20.3 Forward Flexible Molding-C 24.4 19.9 19.6 21.8 21.3 23.2 19.8 19.1 Forward Flexible Molding-D 46.5 25.9 22.8 22.3 21.6 21.5 20.2 19.1

The life time listed in Table 3 is the life time for the entire geartrain obtained at 99.0% reliability. This is the result of setting the life time for each planetary gear unit, which is a preset design standard, from 99.9% to more than 20 years in the design simulation. It can be seen that both the parallel axis model and the coaxial model satisfy the 20 year standard. have. Therefore, the relative comparison of Table 1 and Table 2 is fair.

Outer Diameter Comparison of Parallel and Coaxial Wind Power Generators Outer diameter (m) Power (MW) One 2 3 4 5 6 7 8 Parallel axis  Serial 1.5 1.9 2.3 2.6 3.0 3.6 4.9 Soft molding 1.4 1.9 2.2 2.5 2.9 3.9 5.6 Coaxial Serial Type-A 1.5 1.9 2.1 2.5 2.8 3.1 3.6 5.4 Serial Type-B 1.5 1.8 2.1 2.5 2.8 3.2 3.6 5.7 Serial Type-C 1.5 1.8 2.1 2.5 2.8 3.2 3.6 5.7 Serial Type-D 1.4 1.8 2.1 2.5 2.8 3.2 4.0 6.5 Posterior Formings-A 1.5 1.8 2.1 2.5 2.8 3.1 3.6 5.4 Posterior Formings-B 1.5 1.8 2.1 2.5 2.7 3.2 3.6 5.7 Forward Flexible Molding-A 1.4 1.8 2.1 2.4 2.7 3.1 3.8 5.7 Forward Flexible Molding-B 1.4 1.8 2.1 2.5 2.7 3.0 3.2 3.5 Forward Flexible Molding-C 1.5 1.8 2.2 2.5 2.9 3.2 3.6 5.5 Forward Flexible Molding-D 1.6 1.9 2.2 2.5 2.9 3.2 3.7 5.3

Table 4 is a result of comparing the outer diameter of the conventional wind turbine in the form of a parallel shaft and the coaxial wind turbine 100 according to a preferred embodiment of the present invention through a design simulation test according to the present table Although there is a deviation depending on the power as shown in the coaxial wind turbine 100 according to the present invention appears to reduce the outer diameter by 10% to 17% compared to the conventional wind turbine.

As those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features, the embodiments described above should be understood as illustrative and not restrictive in all respects. Should be.

Therefore, the scope of the present invention is defined by the appended claims rather than the foregoing description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. Should be interpreted.

100: coaxial wind power generator 110: wing 120: hub
200: gear train 201: case 203: carrier plate
210: input shaft 212: low speed axis 215: medium speed axis
220: output shaft 231: first carrier 232: first planetary gear
233: first ring gear 234: first sun gear 235: carrier shaft
236: ring gear connecting member 241: second carrier 242: second planetary gear
243: second ring gear 244: second sun gear 245: carrier shaft
246: ring gear connecting member 251: third carrier 252: third planetary gear
253: third ring gear 254: third sun gear 255: carrier shaft
256: ring gear connecting member 300: generator 310: generator rotary shaft
400: wire 410: wire pipe

Claims (15)

Rotors 110 and 120 rotated by the wind power;
A gear train comprising a hollow input shaft 210 connected to the rotating body, and a hollow output shaft 220 that is coaxially aligned with the input shaft while increasing and outputting a rotational speed input from the rotating body through the input shaft. 200;
A generator (300) having a hollow rotary shaft (320) coaxially connected with the output shaft of the gear train and a rotor (310) coupled to the rotary shaft to produce electricity by rotation of the rotary shaft;
And an electric wire (400) for electrically connecting the generator and the rotating body through the hollow of the input shaft and the output shaft of the gear train and the generator rotating shaft.
The coaxial wind power generator according to claim 1, wherein the generator (300) is integrally fixed to the rear surface of the gear train (200).
The gear train according to claim 1 or 2, wherein the gear train comprises a first planetary gear unit (PGU1), a second planetary gear unit (PGU2), and a third planetary gear unit (PGU3) having a sun gear, a ring gear, and a carrier as components. ) Is a serial gear train connected in series, in which the input shaft 210 is connected to any one of the three components of the first planetary gear unit PGU1 and the other component of the first planetary gear unit PGU1 is connected. It connects to the fixed structure fixed to the case of the gear train and connects the other component of the first planetary gear unit (PGU1) with any one of the components of the second planetary gear unit (PGU2), the second planetary gear unit ( The other component of PGU2) is connected to the fixed structure of the case, and the other component is connected to any one of the components of the third planetary gear unit PGU3, and the other component of the third planetary gear unit PGU3 is Connect the element with the case fixing structure and the other sphere Coaxial wind turbines, characterized in that consisting of a component connected to the output shaft 220.
The method of claim 3, wherein the gear train,
A first carrier 231 coupled to the case 201, the first shaft 231 coupled to the input shaft 210, and a plurality of carrier shafts 235 formed on the first carrier 231. A planetary gear 232, a first ring gear 233 fixed to the case 201 and engaged with the first planetary gear 232, and the first planetary gear 232 at the center of the case 201. And a first sun gear 234 that is coupled to the first sun gear 234 to receive the rotational force, a front end portion is fixedly coupled to the first sun gear 234, and a hollow low speed shaft 212 disposed coaxially with the input shaft 210; The second carrier 241 is fixedly coupled to the rear end of the low speed shaft 212 and rotates together with the low speed shaft 212, and rotates on a plurality of shafts 257 formed on one side of the second carrier 241. A plurality of second planetary gears 242 connected to each other and a second ring gear fixed to the case 201 and meshed with the second planetary gears 242 ( 243, a second sun gear 244 that is engaged with the second planetary gear 242 at the center of the case 201, and receives a rotational force, and a front end part is fixedly coupled to the second sun gear 244. A hollow intermediate speed shaft 215 disposed coaxially with the low speed shaft 212, and a third carrier 251 fixedly coupled to the rear end of the middle speed shaft 215 and rotating together with the middle speed shaft 215; And a plurality of third planetary gears 252 rotatably connected to the plurality of carrier shafts 255 formed on the third carrier 251, and fixed to the case 201 and the third planetary gears 252. A third ring gear 253 that is engaged with each other, and a third sun gear that is engaged with the third planetary gears 252 at the center of the case 201 to receive rotational force and is fixed to the output shaft 220. A coaxial wind turbine comprising: (254).
The method of claim 3, wherein the gear train,
A first carrier 231 coupled to the case 201, the first shaft 231 coupled to the input shaft 210, and a plurality of carrier shafts 235 formed on the first carrier 231. A planetary gear 232, a first ring gear 233 fixed to the case 201 and engaged with the first planetary gear 232, and the first planetary gear 232 at the center of the case 201. And a first sun gear 234 that is coupled to the first sun gear 234 to receive the rotational force, a front end portion is fixedly coupled to the first sun gear 234, and a hollow low speed shaft 212 disposed coaxially with the input shaft 210; The second carrier 241 is fixedly coupled to the rear end of the low speed shaft 212 and rotates together with the low speed shaft 212, and rotates on a plurality of shafts 257 formed on one side of the second carrier 241. A plurality of second planetary gears 242 connected to each other and a second ring gear fixed to the case 201 and meshed with the second planetary gears 242 ( 243, a second sun gear 244 that is engaged with the second planetary gear 242 at the center of the case 201, and receives a rotational force, and a front end part is fixedly coupled to the second sun gear 244. A hollow middle speed shaft 215 disposed coaxially with the low speed shaft 212 and a ring gear connecting member 256 that is fixedly coupled to the rear end of the middle speed shaft 215 and rotates together with the middle speed shaft 215. And a third ring gear 253 coupled to an outer circumference of the ring gear connecting member 256, and rotatably connected to a plurality of carrier shafts 255 formed in the case 201. 253 and a plurality of third planetary gears 252 rotated to be engaged with the third planetary gears 252 at the center of the case 201 to receive rotational force and to be fixed to the output shaft 220. A coaxial wind turbine comprising a third sun gear 254 coupled thereto.
The method of claim 3, wherein the gear train,
A first carrier 231 coupled to the case 201, the first shaft 231 coupled to the input shaft 210, and a plurality of carrier shafts 235 formed on the first carrier 231. A planetary gear 232, a first ring gear 233 fixed to the case 201 and engaged with the first planetary gear 232, and the first planetary gear 232 at the center of the case 201. And a first sun gear 234 that is coupled to the first sun gear 234 to receive the rotational force, a front end portion is fixedly coupled to the first sun gear 234, and a hollow low speed shaft 212 disposed coaxially with the input shaft 210; A ring gear connecting member 246 fixedly coupled to the rear end of the low speed shaft 212 and rotating together with the low speed shaft 212, and a second ring gear fixed to an outer circumference of the ring gear connecting member 246 ( 243 and the second ringer rotatably connected to the plurality of carrier shafts 245 of the carrier plate 203 fixed to the case 201. A plurality of second planetary gears 242 meshed with the second gears 243 and a second sun gear 244 meshed with the second planetary gears 242 at the center of the case 201 to receive rotational force; A front end portion is fixedly coupled to the second sun gear 244 and is fixed to the rear end of the hollow middle speed shaft 215 disposed coaxially with the low speed shaft 212 and the middle speed shaft 215. A third carrier 251 rotating together with the shaft 215, a plurality of third planetary gears 252 rotatably connected to a plurality of carrier shafts 255 formed on the third carrier 251, and A third ring gear 253 fixed to the case 201 and engaged with the third planetary gears 252, and engaged with the third planetary gears 252 at the center of the case 201 to provide rotational force. Coaxial wind power generator, characterized in that it comprises a third sun gear (254) that is received and fixedly coupled to the output shaft (220).
The method of claim 3, wherein the gear train,
A first carrier 231 coupled to the case 201, the first shaft 231 coupled to the input shaft 210, and a plurality of carrier shafts 235 formed on the first carrier 231. A planetary gear 232, a first ring gear 233 fixed to the case 201 and engaged with the first planetary gear 232, and the first planetary gear 232 at the center of the case 201. And a first sun gear 234 that is coupled to the first sun gear 234 to receive the rotational force, a front end portion is fixedly coupled to the first sun gear 234, and a hollow low speed shaft 212 disposed coaxially with the input shaft 210; A ring gear connecting member 246 fixedly coupled to the rear end of the low speed shaft 212 and rotating together with the low speed shaft 212, and a second ring gear fixed to an outer circumference of the ring gear connecting member 246 ( 243 and the second ringer rotatably connected to the plurality of carrier shafts 245 of the carrier plate 203 fixed to the case 201. A plurality of second planetary gears 242 meshed with the second gears 243 and a second sun gear 244 meshed with the second planetary gears 242 at the center of the case 201 to receive rotational force; A front end portion is fixedly coupled to the second sun gear 244 and is fixed to the rear end of the hollow middle speed shaft 215 disposed coaxially with the low speed shaft 212 and the middle speed shaft 215. A ring gear connecting member 256 rotating together with the shaft 215, a third ring gear 253 fixed to an outer circumference of the ring gear connecting member 256, and a plurality of carrier shafts formed in the case 201. A plurality of third planetary gears 252 rotatably connected to 255 and engaged with the third ring gear 253 and rotated, and the third planetary gears 252 at the center of the case 201. And a third sun gear 254 that is engaged with and receives rotational force and is fixedly coupled to the output shaft 220. The same axis wind turbine generator.
The gear train according to claim 1 or 2, wherein the gear train comprises a first planetary gear unit (PGU1), a second planetary gear unit (PGU2), and a third planetary gear unit (PGU3) having a sun gear, a ring gear, and a carrier as components. The first planetary gear unit PGU1 is connected to the input shaft, the second and third planetary gear units PGU2 and PGU3 are connected to each other, and the second planetary gear unit PGU2 is connected to the output shaft. As a forming gear train, the input shaft 210 is connected to any one of the components of the first planetary gear unit PGU1 and the other component of the first planetary gear unit PGU1 is connected to the fixed structure of the case of the gear train. And connect any one of the components of the second planetary gear unit PGU2 with any one of the components of the third planetary gear unit (combination 1) and the other of the components of the second planetary gear unit PGU2. One and the other of the components of the third planetary gear unit (PGU3) are connected to each other (combination 2) , Connecting the other one of the components of the first planetary gear unit (PGU1) with the coupling 1, and connecting the other one of the components of the third planetary gear unit (PGU3) with the case and the second planetary gear unit (PGU2) A coaxial wind turbine, characterized in that consisting of a configuration in which the other one of the components connected to the output shaft.
The method of claim 8, wherein the gear train,
A first carrier 231 coupled to the case 201, the first shaft 231 coupled to the input shaft 210, and a plurality of carrier shafts 235 formed on the first carrier 231. A planetary gear 232, a first ring gear 233 fixed to the case 201 and engaged with the first planetary gear 232, and the first planetary gear 232 at the center of the case 201. And a first sun gear 234 that is coupled to the first sun gear 234 to receive the rotational force, a front end portion is fixedly coupled to the first sun gear 234, and a hollow low speed shaft 212 disposed coaxially with the input shaft 210; A ring gear connecting member 246 fixedly coupled to the rear end of the low speed shaft 212 and rotating together with the low speed shaft 212, and a second ring gear coupled to an outer circumference of the ring gear connecting member 246. 243 and the third ring gear 253 and the third ring gear 2 rotatably connected to the plurality of carrier shafts 255 formed in the case 201. 53 and the third planetary gear 252 rotated in engagement with the third planetary gear, the third sun gear 254 engaged with the third planetary gear 252 at the center of the case 201 to receive the rotational force, and the rear end of the third planetary gear 252. A hollow intermediate speed shaft 215 coupled to the third sun gear 254 to rotate, a second carrier 241 coupled to the front end of the middle speed shaft 215 to rotate together with the middle speed shaft 215, and A plurality of second planetary gears 242 rotatably connected to the plurality of carrier shafts 245 formed on the second carrier 241 and engaged with the second ring gear 243 and the case 201. Coaxial wind power generator comprising a second sun gear (244) is engaged with the second planetary gear (242) in the center of the rotational force and is fixedly coupled to the output shaft (220).
The method of claim 8, wherein the gear train,
A first carrier 231 coupled to the case 201, the first shaft 231 coupled to the input shaft 210, and a plurality of carrier shafts 235 formed on the first carrier 231. A planetary gear 232, a first ring gear 233 fixed to the case 201 and engaged with the first planetary gear 232, and the first planetary gear 232 at the center of the case 201. And a first sun gear 234 that is coupled to the first sun gear 234 to receive the rotational force, a front end portion is fixedly coupled to the first sun gear 234, and a hollow low speed shaft 212 disposed coaxially with the input shaft 210; A second carrier 241 fixedly coupled to a rear end of the low speed shaft 212 and rotating together with the low speed shaft 212, and a third ring gear 253 coupled to an outer circumference of the second carrier 241. And a third oil rotatably connected to the plurality of carrier shafts 255 formed in the case 201 and engaged with the third ring gear 253 to rotate. Gear 252, the third sun gear 254 is meshed with the third planetary gear 252 at the center of the case 201 and receives a rotational force, and the rear end is coupled to the third sun gear 254 to rotate A hollow middle speed shaft 215, a ring gear connecting member 256 coupled to the front end of the middle speed shaft 215 and rotating together with the middle speed shaft 215, and an outer peripheral portion of the ring gear connecting member 256. A second ring gear 243 coupled to the third carrier 251 and rotating together with the third carrier 251, and rotatably connected to a plurality of carrier shafts 245 formed on the second carrier 241. A plurality of second planetary gears 242 meshed with the second planetary gear 242 and rotated with the second planetary gear 242 at the center of the case 201 to receive a rotational force and to be fixed to the output shaft 220. A coaxial wind turbine comprising a second sun gear (244).
The gear train according to claim 1 or 2, wherein the gear train comprises a first planetary gear unit (PGU1), a second planetary gear unit (PGU2), and a third planetary gear unit (PGU3) having a sun gear, a ring gear, and a carrier as components. Among the first planetary gear unit (PGU1) of the first planetary gear unit (PGU1) of the first planetary gear unit (PGU1, PGU2) and the third planetary gear unit (PGU3) coupled to the output shaft One of the components and one of the components of the second planetary gear unit PGU2 are connected to each other (combination 1), and the other of the components of the first planetary gear unit PGU1 and the second planetary gear unit ( The other one of the components of the PGU2 is connected to each other (combination 2), the input shaft 210 is connected to the coupling 1, and the other of the components of the first planetary gear unit (PGU1) fixed structure of the case of the gear train And the other one of the second planetary gear units PGU2 is connected to one of the components of the third planetary gear units PGU3. And any one of the components of the third planetary gear unit PGU3 to the case, and the other one of the components of the third planetary gear unit PGU3 to the output shaft. Coaxial wind power generator.
The method of claim 11, wherein the gear train,
A case 201, a first carrier 231 coupled to the input shaft 210 to receive rotational force, a second ring gear 243 coupled to an outer circumferential surface of the first carrier 231, and the case ( A second planetary gear 242 connected to the plurality of carrier shafts 245 of the carrier plate 203 fixed to 201 and engaged with the second ring gear 243 and rotating, and a center portion of the case 201. A second sun gear 244 meshed with the second planetary gear 242 to receive rotational force, a hollow low speed shaft 212 having a rear end coupled to the second sun gear 244 to rotate, and the low speed shaft A ring gear connecting member 246 coupled to the front end of the 212 and rotated together with the low speed shaft 212, and a first ring gear 233 coupled to the outer circumference of the ring gear connecting member 246 and rotated together. And rotatably connected to a plurality of carrier shafts 235 formed at an intermediate portion of the first carrier 231 and meshed with the first ring gear 233. A plurality of first planetary gears 232 receiving electric power, a first sun gear 234 engaged with the first planetary gears 232 at the center of the case 201, and receiving a rotational force, and a front end of the first planetary gear 232; A hollow middle speed shaft 215 connected to the first sun gear 234 and rotating together with the first sun gear 234, and a ring coupled to the rear end of the middle speed shaft 215 to rotate together with the middle speed shaft 215. A gear connecting member 256, a third ring gear 253 coupled to the outer circumference of the ring gear connecting member 256 and rotating together, and a plurality of carrier shafts 255 formed on the rear surface of the case 201; A plurality of third planetary gears 252 rotatably connected to the third ring gear 253 and engaged with the third planetary gears 252 at a central portion of the case 201 to rotate; Receiving the same and the third, characterized in that it comprises a third sun gear 254 is fixedly coupled to the output shaft 220 Wind power generation equipment.
The method of claim 11, wherein the gear train,
A case 201, a first carrier 231 coupled to the input shaft 210 to receive rotational force, a second ring gear 243 coupled to an outer circumferential surface of the first carrier 231, and the case ( A second planetary gear 242 connected to the plurality of carrier shafts 245 of the carrier plate 203 fixed to 201 and engaged with the second ring gear 243 and rotating, and a center portion of the case 201. A second sun gear 244 meshed with the second planetary gear 242 to receive rotational force, a hollow low speed shaft 212 having a rear end coupled to the second sun gear 244 to rotate, and the low speed shaft A ring gear connecting member 246 coupled to the front end of the 212 and rotated together with the low speed shaft 212, and a first ring gear 233 coupled to the outer circumference of the ring gear connecting member 246 and rotated together. And rotatably connected to a plurality of carrier shafts 235 formed at an intermediate portion of the first carrier 231 and meshed with the first ring gear 233. A plurality of first planetary gears 232 receiving electric power, a first sun gear 234 engaged with the first planetary gears 232 at the center of the case 201, and receiving a rotational force, and a front end of the first planetary gear 232; The hollow medium speed shaft 215 connected to the first sun gear 234 and rotating together with the first sun gear 234 is fixedly coupled to the rear end of the middle speed shaft 215 to rotate together with the middle speed shaft 215. A third carrier 251, a plurality of third planetary gears 252 rotatably connected to a plurality of carrier shafts 255 formed in the third carrier 251, and fixed to the case 201. The third ring gear 253 meshed with the third planetary gears 252 and the third planetary gears 252 are engaged with the third planetary gears 252 at the center of the case 201 to receive a rotational force and the output shaft 220. And a third sun gear 254 fixedly coupled to the same axis wind turbine.
The method of claim 11, wherein the gear train,
A case 201, a ring gear connecting member 236 coupled to the input shaft 210 to receive a rotational force, and a first ring gear 233 rotated together coupled to an outer circumferential surface of the ring gear connecting member 236. And a second planetary gear connected to the second ring gear 243 and the plurality of carrier shafts 245 of the carrier plate 203 fixed to the case 201 and engaged with the second ring gear 243 to rotate. Gear 242, the second sun gear 244 is meshed with the second planetary gear 242 at the center of the case 201 and receives a rotational force, and the rear end is coupled to the second sun gear 244 to rotate A hollow low speed shaft 212, a first carrier 231 coupled to a front end of the low speed shaft 212 and rotating together with the low speed shaft 212, and a plurality of first carriers 231 formed in the first carrier 231. A plurality of first planetary gears 232 rotatably connected to the carrier shaft 235 and engaged with the first ring gear 233 and the case 201 A first sun gear 234 engaged with the first planetary gears 232 at the center of the first gear 234 to receive a rotational force, and a front end connected to the first sun gear 234 to rotate together with the first sun gear 234. A middle gear shaft 215, a ring gear connecting member 256 coupled to a rear end of the middle shaft 215, and rotating together with the middle speed shaft 215, and an outer peripheral portion of the ring gear connecting member 256. And a third ring gear 253 rotating together with the ring gear connecting member 256 and a plurality of carrier shafts 255 formed on the rear surface of the case 201 and rotatably connected to the third ring gear ( 253 and a plurality of third planetary gear 252 is rotated to be engaged with the third planetary gear 252 in the center of the case 201 receives a rotational force and is fixedly coupled to the output shaft 220 A coaxial wind turbine comprising: a third sun gear (254).
The method of claim 11, wherein the gear train,
A ring gear connecting member 236 coupled to the case 201, the input shaft 210 to receive rotational force, and a first ring gear 233 coupled to the outer circumferential surface of the ring gear connecting member 236 to rotate together. And a second planetary gear connected to the second ring gear 243 and the plurality of carrier shafts 245 of the carrier plate 203 fixed to the case 201 and engaged with the second ring gear 243 to rotate. Gear 242, the second sun gear 244 is meshed with the second planetary gear 242 at the center of the case 201 and receives a rotational force, and the rear end is coupled to the second sun gear 244 to rotate A hollow low speed shaft 212, a first carrier 231 coupled to a front end of the low speed shaft 212 and rotating together with the low speed shaft 212, and a plurality of first carriers 231 formed in the first carrier 231. A plurality of first planetary gears 232 rotatably connected to the carrier shaft 235 and engaged with the first ring gear 233 and the case 2 The first sun gear 234 is engaged with the first planetary gears 232 at the center of the first gear 232 to receive the rotational force, and the front end portion is connected to the first sun gear 234 to rotate together with the first sun gear 234. A hollow intermediate speed shaft 215, a third carrier 251 fixedly coupled to the rear end of the intermediate speed shaft 215, and rotating together with the intermediate speed shaft 215, and formed in the third carrier 251. A plurality of third planetary gears 252 rotatably connected to a plurality of carrier shafts 255 and third ring gears 253 fixed to the case 201 and engaged with the third planetary gears 252. And a third sun gear 254 that is engaged with the third planetary gears 252 at the center of the case 201 to receive a rotational force and is fixedly coupled to the output shaft 220. Coaxial wind turbines.

Images