WO2019017754A1

WO2019017754A1 - Wind power generator

Info

Publication number: WO2019017754A1
Application number: PCT/KR2018/008301
Authority: WO
Inventors: 윤진목
Original assignee: 윤진목
Priority date: 2017-07-21
Filing date: 2018-07-23
Publication date: 2019-01-24

Abstract

Provided is a wind power generator comprising: a rotor; a nacelle assembly in which a main shaft for increasing rotational kinetic energy of the rotor is mounted; a power transmission shaft connected perpendicular to the main shaft so as to transmit the rotational kinetic energy of the rotor; a tower part which supports the nacelle assembly and in which the power transmission shaft is installed; and a power generation unit to which the rotational kinetic energy is transmitted through the power transmission shaft. In the wind power generator of the present invention, driving torque of the power transmission shaft and reaction torque of the nacelle assembly are compensated with each other by an electromagnetic force generated according to Lenz's law between a rotor of the power generation unit, which receives the driving torque, and a stator of the power generation unit, which receives the reaction torque.

Description

[Correction according to Rule 26, 14.08.2018] Wind power generator

The present invention relates to a wind power generator having a power generating unit coupled to a nacelle assembly installed at a lower portion of a tower for installing a wind turbine generator. More particularly, the present invention relates to a wind turbine generator, To a wind power generator having a reaction torque canceling mechanism for canceling by a mechanism using an electromagnetic force of a power generation unit.

2. Description of the Related Art Generally, a rotor blade type wind turbine generator mainly includes a rotor for converting wind power into mechanical rotational kinetic energy, a nacelle assembly composed of devices for converting rotational kinetic energy of the rotor into electric energy, And a tower (not shown). The horizontal axis wind turbine is influenced by the wind while the vertical axis wind turbine operates regardless of the direction of the wind. However, the vertical axis wind turbine is divided into the vertical axis wind turbine and the horizontal axis wind turbine depending on whether the direction of the rotation axis of the blade to the ground is horizontal or vertical. There is a disadvantage that the starting is not desirable or the efficiency is low.

The rotor of a typical horizontal axis wind power generator includes a hub-nose cone assembly with a plurality of blades radially disposed at equal intervals from each other, and the hub-nose cone assembly is installed in a nacelle assembly The hub-and-nose cone assembly rotates as the blade rotates by the wind while the power generating unit is assembled to the horizontal main shaft, and the rotational force is transmitted to the main shaft to generate power by driving the power generating unit .

Since the conventional horizontal axis wind turbine is constructed in such a structure that heavy equipment such as a heavy power unit is installed inside a nacelle assembly installed at the top of the tower, it is difficult to construct, install, check, maintain and repair, There is a problem that the cost is increased and the importance of seismic design for a heavy weight generator unit and nussel assembly installed in the air is increased and the construction cost is accordingly increased.

In Korean Patent No. 10-1027055 (registered on Mar. 29, 2011), which is a prior art invented to solve this problem, the rotational kinetic energy of the rotor is increased at the main shaft in the nacelle assembly, Through the vertical power transmission shaft connected vertically, it transmits the increased rotational force to the ground mounted generator at the bottom of the tower. The reaction generated by the load, which operates the generator by the vertical power transmission shaft in the tower, The present invention provides a wind turbine generator capable of simplifying the structure of the nacelle assembly and free-yawing by canceling the reaction torque to be turned by the upper and lower yoke portions of the mechanical structure of the mechanical structure, .

However, the wind turbine disclosed in the above-mentioned prior art has a problem in that the weight of the reaction torque canceling mechanism is increased by the yoke mechanism which operates in the reciprocating motion of the mechanical structure. Further, The thrust bearing which enables free-yawing of the nacelle assembly also has a problem of causing up-and-down vibration due to its large weight, which may lead to failure, and the overall structure of the reaction torque canceling mechanism is complicated, And the manufacturing and maintenance costs are also increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a wind power generator that can cancel out a reaction torque only by an electromagnetic force according to the law of HFE Lenz (Heinrich Friedrich Emilentz; .

It is another object of the present invention to provide a wind power generator having a handling torque, such as a vertical power transmission shaft, a power unit, and the like, which is improved in handleability and has a reaction torque canceling mechanism that prevents vibration during power generation operation after installation.

It is an object of the present invention to provide a rotor having a main shaft for converting wind power into mechanical rotational kinetic energy and installed horizontally to the ground;

A nacelle assembly in which the main shaft of the rotor is embedded;

A power transmitting shaft connected vertically by gear engagement with a main shaft of the nacelle assembly to transmit rotational kinetic energy of the rotor;

A hollow shaft portion having an upper end coupled to a bottom surface of the nacelle assembly and a lower end extending downwardly and a tower body coupled to an outer circumferential surface of the hollow shaft portion by upper and lower yaw bearings and having a lower end fixed to the support portion, A tower portion in which a power transmission shaft is disposed inside the hollow shaft portion; And

The housing has a rotator shaft, a multipolar rotor coupled to the rotor shaft, and a stator of a multiple pole disposed at a distance from the rotor. The housing is fixed to a lower end of a hollow shaft portion of the tower portion, A power generating unit installed on the power transmitting shaft, the power generating unit being connected to the power transmitting shaft via a coupling and being generated by the rotational kinetic energy transmitted through the power transmitting shaft; , &Lt; / RTI >

Wherein the reaction torque of the nucelle assembly transmitted to the stator of the power generation unit is canceled by a drive torque generated by an electromagnetic force in accordance with a law of a lens Lenz of a rotating magnetic field from a rotor of the power generation unit Lt; / RTI >

According to one aspect of the present invention, it is possible to further comprise a turning base mechanism having a structure in which a core shaft coaxially coupled to a rotor shaft of the power generation unit is rotatably supported by an installation place support portion of the power generation unit.

According to another aspect of the present invention, there is provided a wind turbine according to the present invention, wherein the hollow shaft portion and the power transmission shaft are divided into a plurality of sub-assemblies, and the plurality of hollow shaft sub-assemblies and the power transmission shaft sub- And a power transmitting shaft connecting port of the power transmitting shaft is vertically coupled to form a combined body of the hollow shaft portion and the power transmitting shaft.

According to another aspect of the present invention, there is provided a reaction torque transmitting mechanism including a reaction torque transmitting shaft rotatably gear-connected between a nacelle ring gear of a hollow shaft portion and a turning base mechanism And the like.

According to another aspect of the present invention, there is provided a wind turbine generator comprising a housing provided with a bearing support to be fitted to a power transmission shaft and coupled to a lower portion of the hollow shaft, a lower end of the power transmission shaft penetrating the bearing support, A plurality of sub-gears axially coupled to a lower portion of the housing at a predetermined angle so as to be rotatably engaged with and rotatable with respect to the main gear; and a plurality of sub- And a parallel operation mechanism, which is configured to include a unit.

According to another aspect of the present invention, there is provided a wind turbine generator comprising: a housing provided with a bearing support to be fitted to a power transmission shaft and installed between a lower portion of a hollow shaft portion and a turning base assembly; And a power generation unit having a bevel gear attached to a lower portion of the power transmission shaft and a bevel gear coupled to the bevel gear coupled to an end of the horizontal rotary shaft.

According to another aspect of the present invention, there is provided a wind turbine comprising: a push rod which is formed by a main spindle of a nacelle assembly as a hollow main shaft and installed in the hollow main shaft; And the connecting rod is connected to a pivot pin joint which is connected to the blade so that the blade center axis and the blade center axis are attached to one end of the hollow main shaft, And a pitch control mechanism configured to include a pivot pin joint installed on the hub in which the pivot pin joint is installed.

According to the present invention, in transmitting the rotational kinetic energy of the rotor to the power generation unit attached to the lower end of the hollow shaft portion under the nacelle assembly through the power transmission shaft installed vertically in the tower, the power generation load of the power generation unit When the gear coupled to the power transmission shaft receiving the power transmission shaft is rotated by the gear of the main shaft, the power transmitting shaft gear is subjected to the rotating force at the contact point (moment equivalent average point) A rotational moment is generated by the reaction force and the distance between the rotation center axis (AXIS) of the gear coupled to the power transmission shaft in the direction perpendicular to the direction of the force at this point and acts as a reaction torque for rotating the nacelle assembly This allows the reaction torque to be canceled by the electromagnetic force of the power generating unit, simplifying the structure of the nussel assembly, Free-yawing can be implemented, and at the same time, the facility cost can be reduced by reducing the overall weight.

Additional advantages and features of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings, in which like or corresponding reference numerals denote like elements.

1 is a schematic cross-sectional view showing a configuration of a wind power generator according to a first embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views taken along the line a-a 'of FIG. 1, respectively, and a conceptual diagram for explaining a reaction torque received by the nacelle assembly.

Figs. 3A and 3B are partial detail views showing the internal construction of the power generating unit of Fig. 1 and cross-sectional views taken along line b-b 'of Fig. 1, respectively.

4 is a schematic cross-sectional view showing the configuration of a wind power generator having a reaction torque canceling mechanism according to a second embodiment of the present invention.

5 to 7 are sectional views taken along line c-c ', line d-d', and line e-e ', respectively, in FIG.

8A and 8B are a schematic cross-sectional view showing the configuration of a wind power generator according to a third embodiment of the present invention and a cross-sectional view taken along the line f-f 'in FIG. 8A, respectively.

9A and 9B are a schematic cross-sectional view showing the configuration of a wind power generator according to a fourth embodiment of the present invention and a cross-sectional view taken along the line g-g 'in FIG. 9A.

FIGS. 10A and 10B are a schematic cross-sectional view showing the configuration of a wind turbine according to a fifth embodiment of the present invention and a cross-sectional view taken along the line h-h 'of FIG. 10A.

Figs. 11A and 11B are a schematic cross-sectional view showing the configuration of a wind power generator according to a sixth embodiment of the present invention and a cross-sectional view taken along the line i-i 'in Fig. 11A.

12A to 12B are schematic diagrams showing the configuration of a pitch control mechanism of a wind power generator having a reaction torque canceling mechanism according to a seventh embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings of the present invention. Like reference numerals in the drawings denote like elements.

FIG. 1 shows a configuration of a wind turbine according to a first embodiment of the present invention. FIG. 2 (a) is a cross-sectional view taken along line aa 'of FIG. 1, FIG.

Referring to FIGS. 1, 2A and 2B, a wind turbine according to a first embodiment of the present invention includes a tower unit 100, a nacelle assembly 200, and a rotor 300 sequentially assembled, 200 and an upper end of the tower unit 100 are coupled to each other, an adapter unit 160 having a bearing assembly for pre-yawing is installed in the hollow shaft unit 120 of the tower unit 100.

The wind turbine generator according to the first embodiment of the present invention is constructed such that the nacelle assembly 200 is freely turned by the adapter unit 160 provided in the hollow shaft portion 120 of the tower unit 100, So that the nacelle assembly 200 freely rotates freely by the drag force of the wind received by the blade 310 without the wind direction control motor, thereby realizing free yawing.

The nacelle assembly 200 includes a main shaft 220 rotatably supported by a supporting frame 210 having a bearing therein and a bevel gear 230 mounted on the

main shaft

220, 300 includes a hub 320 attached to one end of the main shaft 220 of the nacelle assembly 200 and a plurality of blades 310 attached to the hub 320 at a predetermined angle, As the blade 310 rotates, the main shaft 220 also rotates. A brake 240 is attached to the other end of the main shaft 220.

The tower unit 100 includes a hollow shaft 120 coupled to a lower portion of the nacelle assembly 200 and a bearing assembly 102 rotatably mounted to the bearing assembly 102 inside the hollow shaft 120, A power transmission shaft 140 attached with a bevel gear 142 at an upper end thereof so as to be coupled with the bevel gear 230 of the hollow shaft portion 120 and an outer surface of the hollow shaft portion 120 so that the hollow shaft portion 120 can be rotated And a tower main body 180 for supporting a lower portion of the adapter unit 160. The adapter unit 160 includes an adapter unit 160,

The rotational force of the main shaft 220 is transmitted to the power transmitting shaft 140 as the bevel gear 142 of the power transmitting shaft 140 is coupled to the bevel gear 230 of the main shaft 220. [

The adapter unit 160 includes inner and

outer adapters

164 and 166 each of which is coupled with a yaw bearing 162 to fasten the bearing to the outer surface of the

hollow shaft unit

120, 162 may be positioned between the protrusions 122 protruding from the outer surface of the hollow shaft portion 120 and the external adapter 166. In the drawing, the inner adapter 164 is located at the upper portion and the outer adapter 166 is located at the lower portion, but it may be located in the opposite direction.

A plate flange 602 is disposed under the hollow shaft portion 120 to attach the power generator unit 600.

The power generation unit 600 includes a rotor shaft 610 connected to a lower portion of the tower shaft 140 by a coupling 604 and a rotor 620 coupled to the rotor shaft 610 and a rotor 620 And a pair of

stators

630 and 635 attached to the outer surface at a predetermined distance. A housing 640 surrounding the sides of the

stators

630 and 635 and having bearings disposed on upper and lower portions of the rotor shaft 610 is attached.

The foundation 180 of the tower body is installed in the foundation insert 184 at the foundation site after the foundation insert 182 is installed and then the foundation insert 182 As shown in FIG.

As described above with reference to FIGS. 1 and 2, when the wind power generator of the first embodiment of the present invention pre-yaws is winded in the direction of arrow Z in FIG. 1, The rotational force of the main shaft 220 is transmitted to the power transmitting shaft 140 and the rotational force transmitted to the power transmitting shaft 140 is transmitted to the rotation of the power generating unit 600 And is transmitted to the magnetic axis 610.

Fig. 3A and Fig. 3B respectively show the internal configuration of the power generating unit of Fig. 1 and a section taken along the line b-b 'of Fig.

1, 2 and 3, the wind turbine according to the first embodiment of the present invention cancels the reaction torque using the electromagnetic force of the power generation unit.

The bevel gear 230 of the bevel gear 230 receives the power generation load and the bevel gear 142 of the power transmission shaft 140 is driven by the arrow torque Fc by the rotation torque H of the main shaft 220, The bevel gear 230 of the bevel gear 230 applies the arrow Fc and at the same time the reaction torque Fd which is generated by the reaction force Fd causes the reaction force D is a housing 640 of the power generation unit 600 coupled to the lower end of the hollow shaft 120 through which the nosepiece assembly 200 is coupled and a stator 630 integrally coupled to the housing 640, (735).

The rotational torque H of the main shaft 220 causes the bevel gear 230 of the main shaft 220 to be coupled to the power transmitting shaft 140 coupled to the bevel gear 142 of the power transmitting shaft 140 receiving the power generation load, The rotors 620 of the power generating unit 600 are rotated by the magnets of N and S poles on one side and the other side of the rotor 620 of the power generating unit 600 by rotating the rotors 620 of the power generating unit 600 And the stators 630 and 635 are provided with the power generation coils 632 and 634 on one side and the other side respectively to rotate the rotor 620 in the direction of the arrow C to the rotor shaft 610, 620 generates a rotating magnetic field so that an electromagnetic force based on the principle of the lens Lenz acts on the power generation coils 632 634 of the stator 630 635 and the magnetic poles N pole of the rotor 620 An N pole which interferes with the motion of the rotor 620 is induced in the stator 630 and the generating coil 632 in the advancing direction and a repulsive force which is in contact with the N pole of the rotor 620 acts, The electron (620) The S pole is induced in the other stator 635 and the power generation coil 634 by the same principle as the movement of the moving magnet is interfered with the S pole of the rotor 620, And the torque of the arrow U generated by the action of the attraction force and the repulsion force, respectively, as a reaction received from the stator 630 or 635 by the rotor 620 in the direction of the arrow T, And the stator 630 and 635 are firmly coupled to the housing 640 and connected to the housing 640 and the nacelle assembly 200 that is transmitted to the housing 640 through the hollow shaft 120 as a unitary structure. And the

stator

630 or 635 receives the reaction torque D received by the rotor 620 by the repulsive force of the rotor 620 and the attracting force of the rotor 620 by the electromagnetic force according to the Lenz's law in the rotating magnetic field Lt; RTI ID = 0.0 > V < / RTI > The

reaction shafts

630 and 635 receive the reaction torque D through the hollow shaft portion 120 and the driving torque V received from the rotor 620 according to the law of Lenz, (U + V = U - U = 0), and the reaction torque and the drive torque are canceled out to cancel each other. As a result, the nacelle assembly (200) The power generation unit 600 at the lower part of the tower is operated without generating any rotation by the power generator.

The power generation unit has described the operation of canceling the reaction torque when the rotor 620 has two poles and the

stator

630 and 635 have two poles. However, when the rotor 620 is not a two pole but a multi- And the

stator

630 and 635 are not two poles but have multiple poles, in the case of using a rotating magnetic field, the result that the two torques cancel each other as described above by the electromagnetic force of the Lenz law is the same , Contrary to the above embodiment, even if the

stator

630, 635 is a magnet and the coil is provided in the rotor 620, the result of canceling the reaction torque is the same.

Further, the coupling between the hollow shaft and the tower main body can use other known configurations as long as it allows pre-yawing of the nacelle assembly.

Since the nacelle assembly 200 is relatively supported by the hollow shaft portion 120 having a diameter smaller than that of the tower body 180, the projected area of the wind when the wind is blown toward the rotor 300 is relatively small, And the blade 310. In addition, the present invention has been made in view of the above-described problems.

FIG. 4 shows a configuration of a wind power generator according to a second embodiment of the present invention, and FIGS. 5 to 7 each show a cross section taken along lines c-c ', d-d' and e-e 'in FIG.

4 to 7, the wind turbine generator according to the second embodiment of the present invention is the same as that of the first embodiment except that it further includes a turning base mechanism 700, Only the base mechanism 700 will be described.

The turning base mechanism 700 includes a plate 710 attached to the lower portion of the housing 640 of the power generating unit 600 and a receiving portion for receiving the rotor shaft 610 of the power generating unit 600, A turntable 720 attached to the turntable 720 and a base plate 730 installed on the ground or the ground of the insert mounting portion 182 and a thrust bearing (not shown) installed between the turntable 720 and the base plate 730 740).

A core shaft 722 coaxial with the rotor shaft 610 is inserted and fastened by a coupling nut 728 into a hollow shaft of the turntable 720 and a shaft supporting portion 732 provided at the center of the base plate 730, And a thrust bearing 724 and a radial bearing 726 are installed on the shaft 722 of the hollow portion.

The turning base mechanism 960 is not limited to the structure described above so long as the structure is such that the shaft 722 coaxially coupled to the rotor shaft 610 of the power generator unit 600 is rotatably supported by the support portion of the installation place of the power generator unit 600, The structure can be different from the above.

The turning base mechanism 700 in this embodiment can freely turn and support the power generating unit 600 of a considerable weight freely on the thrust bearing 740. [

Figs. 8A and 8B show the construction of a wind turbine generator according to a third embodiment of the present invention, respectively, taken along the line f-f 'in Fig. 8A.

8, a wind turbine generator according to a third embodiment of the present invention includes a power transmission shaft multi-stage connection mechanism 800 in which a plurality of power transmission shaft coupling holes 860 and a plurality of hollow shaft portion sub- Except that the power transmitting shaft 140 and the hollow shaft portion 120 below the yaw bearing 162 are constituted by a plurality of partial bodies, as described above. Therefore, in the present embodiment, (800) will be described.

The hollow shaft portion body 820 is divided into upper and lower first and second hollow

shaft powder portions

822 and 824 of the power transmission shaft connecting hole 860 at the upper and lower portions thereof. The upper first hollow shaft portion body 822 is engaged with the second hollow shaft powder 824 of the lower end of the hollow shaft portion 120 of the first embodiment or the power transmission shaft connecting portion 860 of the adjacent upper portion, The engagement is achieved by the insertion of the power transmitting shaft 140 of the power transmitting shaft inserting and supporting portion 826 described below and the length of the

hollow shaft portions

120 and 820 and the length of the power transmitting shaft 140 In FIG. 8A in order to absorb the amount of change, and other known joining methods such as couplings other than spline coupling may be used. A power transmission shaft insertion portion 826 is formed coaxially with the power transmission shaft 140 so as to be coupled thereto. The power generation unit 600 is attached to the lowermost second connection hollow shaft portion 824.

The power transmission shaft coupling hole 860 has an inner bearing support disposed around the power transmission shaft insertion support portion 826 of the first hollow shaft portion 822 and an outer bearing disposed around the inner bearing support 862 Two pairs of bearings 670 disposed on the outer periphery of the outer bearing support 864 between the outer bearing support 864 and the support 864 and between the inner and outer bearing supports 862 and 864, And a circular rim 866 having three protrusions that are equidistantly spaced from the outer periphery of the pair of bearings 870 and attached within the tower main body 180.

The protrusion of the rim 866 has been described above as three protrusions. However, the protrusion of the rim 866 is not limited thereto. Four or more protrusions may be used. In order to fix the assembly of the bearing support and the bearing to the inside of the hollow shaft, Can be used.

The power transmission shaft multi-stage connection mechanism 800 separates the power transmission shaft 140 into a plurality of sub sorts, and by the upper portion of the yaw bearing 162 of the power transmission shaft 14 and the sub- Vibration during rotation of the power transmission shaft constituted by the sub-bodies can be prevented, and it is possible to perform the assembly mode, thereby shortening the construction period and reducing the construction cost.

9A and 9B show the construction of the wind power generator according to the fourth embodiment of the present invention, respectively, and show cross sections taken along the line g-g 'in FIG. 9A.

9, the wind turbine according to the fourth embodiment of the present invention further includes a separate reaction torque transmitting mechanism for transmitting a reaction torque between the lower end of the hollow shaft portion and the turning base mechanism at the lower end of the power generation unit. The structure of the second embodiment is the same as that of the second embodiment, and therefore only a separate reaction torque transmitting mechanism 900 will be described for this embodiment.

The reaction torque transmission mechanism 900 includes a hollow shaft portion 920 provided with a nussel ring gear 924 on a flange 922 formed at a lower end portion thereof and a tower 942 having a plurality of support portions 942 provided at predetermined intervals on the inner wall surface thereof. A turning base mechanism 960 provided with a main body 940 and a turntable gear 964 attached to the outer surface of the turntable 962 and a nose ring gear 924 meshing with the nocell ring gear 924 of the hollow shaft portion 920 at one end, And a reaction transmission pinion gear 984 engaged with the turntable gear 964 provided on the turning base mechanism 960 is attached to the other end of the pinion gear 982, And a reaction torque transmitting shaft 980 that is rotatably attached to the base member 910. [

The coupling between the hollow shaft portion 920 of the reaction torque transmitting mechanism 900 and the turning base mechanism 960 may be different from the above structure as long as the rotation thereof is possible. The turning base mechanism 960 also has a structure in which the shaft 722 coaxial with the rotor shaft 6100 of the power generating unit 600 is rotatably supported by the supporting portion of the power generating unit 600 As described above.

The flange 922 is integrally formed at the lower end of the hollow shaft portion 120. The flange 922 may be separately formed and attached to the lower end of the hollow shaft portion 120. [

According to the present embodiment, since the reaction torque is canceled by the reaction torque transmission shaft 980 provided inside the tower main body 940, handling of the installation and management is improved easily.

To summarize the above, in the wind turbine of this embodiment,

A rotor 300 provided with a main shaft 220 for converting wind power into mechanical rotational kinetic energy, and installed horizontally with the ground;

A nacelle assembly 200 in which the main shaft 220 of the rotor 300 is embedded;

A power transmitting shaft 140 connected to the main shaft 220 of the nacelle assembly 200 by gear engagement and transmitting rotational kinetic energy of the rotor 300;

A hollow shaft portion 920 having an upper end extending downwardly from the bottom of the nacelle assembly 200 and a lower end extending downwardly and having a flange 922 formed at the lower end thereof, And

And a tower main body 940 coupled to the outer circumferential surface of the hollow shaft portion 920 by upper and lower yaw bearings 162 and having a lower end fixed to the installation place support portion, A tower portion 960 extending from the inside of the housing 920;

And has a housing 640, a rotor shaft 610, a multipolar rotor 620 coupled to the rotor shaft 610, and a multipolar stator 635 installed at a distance from the

rotor

620, 640 are connected to the power transmission shaft 140 and connected to the power transmission shaft 140 and connected to the power transmission shaft 140. The power transmission shaft 140 is connected to the power transmission shaft 140, (600);

A base mechanism 700 for rotatably supporting a shaft 722 coaxially coupled to the rotor shaft 610 of the power generating unit 600 to a mounting place support portion of the tower portion 960;

And a reaction torque transmitting shaft 980 rotatably coupled between the nacelle ring gear of the hollow shaft portion 920 and the turning base mechanism 960.

FIGS. 10A and 10B show a configuration of a wind power generator according to a fifth embodiment of the present invention, respectively, taken along the line h-h 'of FIG. 10A.

10, the wind turbine generator according to the fifth embodiment of the present invention is the same as that of the second embodiment except for adopting a parallel operation structure of a plurality of small generation units arranged vertically in accordance with the generation capacity, Only the parallel operating mechanism 1000 will be described with respect to this embodiment.

The parallel operation mechanism 1000 of the plurality of power generation units is provided with a central bearing support portion 922 for inserting a bearing to which the power transmission shaft 140 is supported and two bearing support portions 925 formed to face the outer peripheral bottom face A main gear 940 attached to a lower end of a power transmission shaft 140 passing through the bearing support 922 and a main gear 940 attached to a lower end of the housing 920, And the power unit 980 is axially coupled to the two bearings 930 and the two sub-teeth 960 which are axially coupled to the bearings 925 and are rotatably engaged with the main gear 940 so as to face each other.

However, it is also possible to connect the small power generation units in parallel with each other by using three or more bearing support portions 925 and nine sub-teeth 960, It has an easy transportation effect.

Figs. 11A and 11B show the construction of the wind power generator according to the embodiment of Fig. 6 of the present invention, respectively, taken along the line i-i 'in Fig. 11A.

Referring to FIG. 11, the wind turbine generator according to the embodiment of FIG. 6 of the present invention has the same structure as that of the fifth embodiment described above except that the horizontal power generating unit mechanism 1100 is provided between the lower portion of the hollow shaft portion 120 and the turning base mechanism 700. And therefore, only the horizontal power generation unit mechanism 1100 will be described with respect to this embodiment.

The horizontal power generating unit mechanism 1100 is formed with a bearing support 922 at the center where a bearing to which the power transmission shaft 140 is to be inserted is formed so that the lower portion of the hollow shaft portion 120 and the turning base assembly 700 A bevel gear 148 attached to a lower portion of the power transmission shaft 140 so as to be exposed through the housing 1120 and a bevel gear 142 coupled to the bevel gear 148, , And the horizontal rotary shaft of the power generation unit 600 is coupled to the bevel gear 142. According to this embodiment, since the power generating unit can be installed horizontally instead of vertically, it is easy to assemble and maintain the generator.

FIG. 12 shows a pitch control mechanism of a wind power generator according to a seventh embodiment of the present invention, FIG. 12A is a structural explanatory view at a stroke control position, and FIG. 12B is a partial enlarged view of FIG. 12A.

12, the wind turbine generator according to the seventh embodiment of the present invention can adopt the configurations of the above-described embodiments, except for the configuration of the pitch control mechanism that adjusts the rotation angle of the blades according to the wind speed and the operating conditions. Only the pitch control mechanism 1200 will be described for the embodiment.

The pitch control mechanism 1200 includes a push rod 1240 inserted into the hollow spindle 1220 and formed with a hollow spindle 1220 by drilling the spindle 220 of the nacelle assembly 200 into the inside thereof, A connecting rod 1260 and an actuator 1280 attached to one end portion and the other end portion of the push rod rod 1240 and a hub portion 320 attached to one end of the hollow main shaft 1220, And the blade 310 is connected to the connecting rod 1260 such that the blade 310 is at a predetermined angle and is pivotally mounted on the end of the blade 310 disposed at the hub 320 to change to the control position according to the angle. And includes a pin joint 1300. As the blade 310 rotates by the wind, the hollow spindle 1220 also rotates. As the push-pull rod 1240, whose one end is coupled by the operation of the actuator 1280 according to the speed of the wind, The other end of the connecting rod 1260 rotatably coupled to the other end of the blade 310 rotates to rotate the blade 310 by operating a pivot pin joint 13 eccentrically provided at the end of the blade 310 to rotate the blade 310 ) To change the angle as needed.

Therefore, in the known eccentric pivot type blade pitch control mechanism, the eccentric pivot pin joint 1300 is connected to the connecting rod 1260, the push pull rod 1240, the hollow main shaft 1220, and the actuator 1280 As it works, it eliminates the wear due to wear of the connections, reduces the weight of the rotor, and achieves the balance of the weight of the nacelle assembly.

As described above, the wind turbine generator according to the present invention transmits the rotational kinetic energy of the rotor to the power generation unit attached to the lower portion through the power transmission shaft vertically installed in the tower, and the drive torque generated in the power transmission shaft The reaction force received from the nacelle assembly, that is, the reaction torque, is canceled by using the electromagnetic force of the power generation unit, thereby simplifying the structure of the reaction torque canceling mechanism and the nacelle assembly while realizing free-yawing, Can be reduced.

Further, the wind power generator according to the present invention is characterized in that the turning base assembly flexibly and pivotally supports the heavy-weight power generation unit attached to the lower portion of the vertical power transmission shaft, And even when the wind direction changes frequently, the response speed is faster than the active yawing, so that the occurrence time of the yawing error can be reduced.

The wind turbine according to the present invention further comprises a plurality of power transmission shafts which are separated from each other by a plurality of power transmission shafts which can be connected to each other in a multi-stage manner, It is possible to reduce the height of the unit power transmission shaft and the height of the tower main body, thereby preventing self vibration during rotation, shortening the construction period and reducing the construction cost.

While the present invention has been described above by way of non-limiting examples, such embodiments and description are not intended to limit the scope and spirit of the present invention, Variations, and / or modifications may be made without departing from the scope of the present invention. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Accordingly, it is to be understood that the scope of the present invention is not limited by the above-described exemplary embodiments, but is defined by the following claims and includes equivalents thereof.

Claims

A rotor provided with a main shaft for converting the wind force into mechanical rotational kinetic energy, and installed horizontally with the ground;

A nacelle assembly in which the main shaft of the rotor is embedded;

A power transmitting shaft connected vertically by gear engagement with a main shaft of the nacelle assembly to transmit rotational kinetic energy of the rotor;

A hollow shaft portion having an upper end coupled to a bottom surface of the nacelle assembly and a lower end extending downward;

And a tower main body having an upper portion coupled to the hollow shaft portion and a lower end portion fixed to the installation place support portion, wherein the power transmission shaft is disposed inside the hollow shaft portion; And

The housing has a rotator shaft, a multipolar rotor coupled to the rotor shaft, and a stator of a multiple pole disposed at a distance from the rotor. The housing is fixed to a lower end of a hollow shaft portion of the tower portion, A power generating unit installed on the power transmitting shaft, the power generating unit being connected to the power transmitting shaft via a coupling and being generated by the rotational kinetic energy transmitted through the power transmitting shaft; , &Lt; / RTI >

Wherein a reaction torque of the nacelle assembly transmitted to a stator of the power generation unit is canceled by a drive torque generated by an electromagnetic force in accordance with a law of a rotating magnetic field lens from a rotor of the power generation unit,
The method according to claim 1,

The tower unit includes:

And an adapter portion which is fitted to the outer surface of the hollow shaft portion so that the hollow shaft portion can be rotated for pre-yawing and is supported by the tower body,

The adapter unit includes an inner and an outer adapter each having a pair of yaw bearings coupled to the outer surface of the hollow shaft,

And the pair of yaw bearings are positioned between protrusions protruding above and below the outer surface of the hollow shaft portion.
3. The method according to claim 1 or 2,

Further comprising a turning base mechanism for rotatably supporting a shaft 722 coaxially coupled to the rotor shaft 610 of the power generating unit 600 to a mounting place support portion of the power generating unit 600. [ Wind power generator.
3. The method according to claim 1 or 2,

Wherein the power transmission shaft and the hollow shaft portion to which the power generating unit is attached are each formed of a plurality of sub members, and a power transmission shaft coupling hole to which the sub member is coupled.
5. The method of claim 4,

Wherein the power transmission shaft connector has:

An inner bearing support body having a central portion of a power transmission shaft insertion portion of the hollow shaft portion body, an outer bearing support body disposed to surround the inner bearing support body, and a plurality of outer bearing support bodies spaced equidistantly from the outer surface of the outer bearing support body, Wherein the inner bearing support and the outer bearing support are each provided with a bearing assembly comprising two upper and lower stages, respectively.
3. The method according to claim 1 or 2,

A housing coupled to the lower portion of the hollow shaft portion for supporting the nacelle assembly and having a bearing support portion fitted to the power transmission shaft;

A main gear attached to a lower end of the power transmission shaft passing through the bearing support,

A plurality of sub-teeth axially coupled to a lower portion of the housing at a predetermined angle so as to be engaged with the main gear,

Further comprising a parallel operation mechanism including a plurality of power generation units each of which is rotatably coupled to a shaft of each tooth of the sub-gear.
6. The method of claim 5,

Further comprising a horizontal power generating unit mechanism installed between a lower portion of the hollow shaft portion supporting the nacelle assembly and the turning base assembly,

The horizontal power generation unit mechanism comprises:

A housing provided with a bearing support to be fitted to the power transmission shaft and installed between a lower portion of the hollow shaft portion and the turning base assembly;

A bevel gear attached to a lower portion of the power transmitting shaft to be exposed in the housing,

Further comprising a power generating unit, wherein a bevel gear coupled to the bevel gear is coupled to an end of a horizontal rotator shaft.
3. The method according to claim 1 or 2,

Further comprising a pitch control mechanism for adjusting an angle of wind of the blades of the rotor,

The pitch control mechanism includes:

A push pull rod horizontally installed in the hollow spindle to form a hollow spindle by drilling the center of the spindle of the nacelle assembly;

A connecting rod and a linear actuator attached to one end and the other end of the push rod,

A rotation center axis of the rotor attached to one end of the hollow main shaft,

And a pivot pin joint that is connected to the connecting rod such that the blade is at an angle and eccentrically installed at an end of the blade disposed at the hub to change to the control position according to the angle.
A rotor provided with a main shaft for converting the wind force into mechanical rotational kinetic energy, and installed horizontally with the ground;

A nacelle assembly in which the main shaft of the rotor is embedded;

A power transmitting shaft connected vertically by gear engagement with a main shaft of the nacelle assembly to transmit rotational kinetic energy of the rotor;

A hollow shaft portion having an upper end coupled to a bottom surface of the nacelle assembly and a lower end extending downwardly,

And a tower main body having an upper portion coupled to the hollow shaft portion and a lower end fixed to the support portion of the installation place, wherein the power transmission shaft extends from the inside of the hollow shaft portion;

A housing having a rotor, a rotor shaft, a multipolar rotor coupled to the rotor shaft, and a multi-pole stator disposed at a distance from the rotor, the housing being disposed to be coupled to the power transmission shaft, A power generation unit that is generated by rotational kinetic energy;

A turning base mechanism rotatably supporting a shaft coaxially coupled to a rotor shaft of the power generating unit to a mounting place support portion of the power generating unit; and

And a reaction torque transmitting shaft rotatably geared between the nacelle ring gear of the hollow shaft portion and the turning base mechanism.