KR101239077B1 - Generater module and aerogenerator having the same - Google Patents

Abstract

PURPOSE: A generator module and a wind power generator including the same are provided to easily increase or decrease electricity generation capacity by arranging a stator and a plurality of rotors in an axial direction. CONSTITUTION: A first and a second rotors(170a,170b) are rotatably arranged in an axial direction of a stator(140). The first and the second rotors are respectively arranged on the sides of the stator along the axial direction. The stator includes a frame, an outer coil(165), and an inner coil(167). The outer coil is arranged in an outer slot of the frame. The inner coil is arranged in an inner slot of the frame.

Description

Generator module and wind turbine with same {GENERATER MODULE AND AEROGENERATOR HAVING THE SAME}

The present invention relates to a generator module and a wind power generator including the same, and more particularly, to a generator module and a wind power generator including the same to facilitate increase and decrease of the power generation capacity.

As is well known, a generator or generator module (hereinafter, referred to as a 'generator module') is a device that converts mechanical energy into electrical energy.

Typically the generator module may be composed of a rotor having a rotor that rotates with respect to the stator.

Such a generator module may include a magnet for forming a magnetic field and a conductor for generating an electromotive force.

The generator module may be configured to rotate the magnet or the conductor.

Hydroelectric power, wind power, and thermal power may be used as a power source for rotating the magnet or conductor of the generator module.

Recently, the development and use of wind power generators that do not use fuel due to exhaustion of energy resources and / or environmental pollution have increased.

Such a wind turbine generator may include a stator, a rotor rotatably disposed with respect to the stator, and a windmill or a fan assembly (hereinafter, referred to as a 'fan assembly') for rotating and driving the rotor. .

1 is a view showing an example of a conventional wind power generator.

As shown in FIG. 1, the wind power generator includes a support 10 arranged vertically, a generator module 20 provided in an upper region of the support 10, and a generator module 20. The fan assembly 30 may be provided.

The fan assembly 30 may include a hub 31 and a plurality of blades 32 extending radially with respect to the hub 31 and spaced apart in a circumferential direction.

A shaft of the hub 31 is provided with a rotating shaft (not shown) arranged horizontally, the rotating shaft is connected to the generator module 20 to provide a driving force for driving the rotor of the generator module 20. Can be.

By the way, such a conventional wind power generator is a so-called "horizontal-shaft windmill" having a horizontally arranged rotary shaft, and the influence of the wind speed and the wind direction is large, which places limitations on the installation place.

In consideration of this point, the wind turbine generator can be configured to have a relatively large size so that it can be installed in an area (for example, a seaside) having an appropriate wind speed and wind direction. For example, the support 10 may have a size of several tens of meters to one hundred tens of meters, and the rotation radius of the blade 32 may be configured to have several tens of meters to hundreds of tens of meters. Accordingly, the size of the generator module 20 is also increased to be configured to have a weight of several tens to hundreds of tons.

In consideration of the problems of the wind power generator having a horizontal axis windmill, in some cases, a wind power generator having a so-called 'vertical axis windmill' having a relatively small influence of wind speed and wind direction has been developed and used.

By the way, in the conventional wind power generators comprising a horizontal axis windmill or a vertical axis windmill, in order to increase the power generation capacity of the generator module 20 (stator and rotor) and / or fan assembly 30 Since it is to increase the size of the self, when the power generation capacity increases, the generator module 20 and the fan assembly 30 must be newly produced, which may take a relatively long time and effort. In addition, the cost can be greatly increased due to this.

Accordingly, an object of the present invention is to provide a generator module that can easily increase or decrease the power generation capacity and a wind power generator having the same.

In addition, another object of the present invention is to provide a generator module capable of improving power generation efficiency and a wind power generator having the same.

In addition, another object of the present invention is to provide a wind power generator that can reduce the constraints of the installation site.

The present invention, to achieve the above object, the stator; It provides a generator module comprising: a first rotor and a second rotor rotatable about the stator about the same rotation axis, respectively disposed on both sides of the stator in the axial direction.

The stator may include a frame having an outer slot and an inner slot formed concentrically with each other; An outer coil provided in the outer slot; And inner coils provided in the inner slots, wherein the outer slots and the inner slots may be formed to be spaced apart at equal intervals along each circumferential direction.

The first rotor and the second rotor may be provided with an outer permanent magnet corresponding to the outer coil and an inner permanent magnet corresponding to the inner coil, respectively.

Each of the inner coils may be configured such that the center of the circumferential direction is disposed between the centers of two outer coils adjacent to each other in the circumferential direction.

Each of the inner permanent magnets may be configured such that the center of the circumferential direction is disposed between the centers of two outer permanent magnets adjacent to each other in the circumferential direction.

The stator may be configured to include a first stator and a second stator spaced apart from each other along the axial direction.

The first stator and the second stator may be configured to include an outer coil and an inner coil disposed concentrically with each other.

It may be configured to further include a third rotor disposed between the first stator and the second stator.

The third rotor, the frame disposed between the first stator and the second stator; And an outer permanent magnet and an inner permanent magnet disposed on both sides of the frame to correspond to the outer coil and the inner coil of the first stator and the second stator, respectively.

The first rotor and the second rotor, the disk-shaped frame is provided with the outer permanent magnet and the inner permanent magnet on one side; And a permanent permanent magnet disposed along the circumferential direction at the other edge of the frame.

The generator module may further include a magnetic support unit disposed on one side of the first rotor and the second rotor along the axial direction to magnetically support the first rotor and the second rotor, respectively. Can be configured.

The first rotor, the first rotor frame a) respectively disposed on one side of the first stator; An outer permanent magnet and an inner permanent magnet provided on one side of the first rotor frame a) to correspond to the outer coil and the inner coil of the first stator, wherein the second rotor frame comprises: a second rotor frame, It may be configured to include an outer permanent magnet and an inner permanent magnet provided on one side of the second rotor frame to correspond to the outer coil and the inner coil of the second stator.

The first rotor and the second rotor is provided with a rim permanent magnet respectively disposed on the edge of each other side of the first rotor frame a) and the second rotor frame,

And a magnetic support unit that magnetically supports the first rotor, the second rotor, and the third rotor, respectively, from the outside of the first rotor, the second rotor, and the third rotor.

On the other hand, according to another field of the present invention, the rotating shaft; A fan assembly rotatably coupled to the rotation shaft; And the generator module operatively connected to the fan assembly to generate a current when the fan assembly is rotated.

Here, the rotation shaft is disposed in the vertical direction, the fan assembly may be composed of a plurality of coupled to be spaced apart in the axial direction.

As described above, according to an embodiment of the present invention, by configuring the stator and the plurality of rotors in the axial direction, it is possible to facilitate the increase and decrease of power generation capacity.

In addition, the stator coils are arranged concentrically, but the inner coils are disposed between the outer coils, and the permanent magnets of the rotors are disposed to correspond to the outer coils and the inner coils, thereby allowing the rotor to have a relatively small rotational force. It can be rotated smoothly. In addition, the rotational resistance of the rotor can be reduced to improve the power generation efficiency.

In addition, by having a magnetic support unit for supporting the rotor magnetically, the rotor can be stably supported and smoothly rotated even by an external force acting in the transverse direction with respect to the rotation axis. By this, the rotational resistance of the rotor can be reduced, so that the power generation efficiency can be further improved.

In addition, the rotation axis is arranged in the vertical direction and the fan assembly is composed of a plurality of to be coupled to be spaced apart in the axial direction can reduce the radius of rotation and can be limited in the installation site constraints.

1 is a view showing an example of a conventional wind power generator,
2 is a perspective view of a wind power generator according to an embodiment of the present invention;
3 is a perspective view of the generator module of FIG.
4 is a cross-sectional view of the generator module of FIG.
5 is an exploded perspective view of the generator module of Figure 3,
6 is a plan view of the first stator of FIG. 4, FIG.
7 is a cross-sectional view of the first stator of FIG. 6, FIG.
8 is an enlarged view illustrating main parts of FIG. 7;
9 is a view for explaining the connection of the coil of the first stator of FIG.
10 is a perspective view of the first rotor of FIG. 4, FIG.
FIG. 11 is a bottom perspective view of the first rotor of FIG. 10;
12 is a longitudinal cross-sectional view of FIG. 11;
13 is a view for explaining the arrangement of the permanent magnet of FIG.
14 is a perspective view of the third rotor of FIG. 5, FIG.
15 is a cross-sectional view of FIG.
16 is a perspective view of the lower bearing of FIG. 5, FIG.
17 is a longitudinal cross-sectional view of FIG. 16;
18 is a perspective view of the fan assembly of FIG.
19 is a plan view of FIG. 18;
20 is a perspective view of the blade of FIG. 18;
21 is a plan view of FIG. 20;
22 is a sectional view of a generator module according to another embodiment of the present invention;
FIG. 23 is a perspective view of a coupling state of the bearing unit and the first rotor of FIG. 22.

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

As shown in FIG. 3, the wind power generator according to the embodiment of the present invention includes a rotation shaft 111, a fan assembly 120 rotatably coupled to the rotation shaft 111, and the fan assembly 120. It may be configured to include a generator module 130 that is connected to the interlockable to generate a current when the fan assembly 120 rotates.

The fan assembly 120 may be formed of a plurality of spaced apart from each other along the axial direction. Accordingly, in addition to increasing or decreasing the rotation radius or axial size of the fan assembly 120 when the capacity is increased or decreased, it is possible to cope with the increase or decrease in capacity by controlling the number of the fan assembly 120. Can be.

In addition, the rotating shaft 111 of the fan assembly 120 may be disposed along the vertical direction. Thereby, not only the influence of the wind direction can be reduced, but also the restriction of the installation site can be reduced.

One side of the rotating shaft 111 may be provided with a generator module 130 is connected to the fan assembly 120 to generate a current when the fan assembly 120 is rotated. In this embodiment, the generator module 130 is coupled to the lower region of the rotary shaft 111 is illustrated.

As shown in FIGS. 4 to 6, the generator module 130 is rotatable about the stator 140 with respect to the same rotation shaft 111 as the stator 140 and the stator along the axial direction. The first rotor 170a and the second rotor 170b disposed on both sides of the 140 may be provided. Here, the rotation shaft 111 may be configured to be arranged along the vertical direction.

The stator 140 may include a first stator 141a and a second stator 141b spaced apart from each other along the axial direction. For example, the first stator 141a and the second stator 141b may be configured to be spaced apart from each other along the vertical direction. More specifically, the second stator 141b may be spaced apart from the lower side of the first stator 141a.

One side of the first stator 141a may be provided with a first rotor 170a. More specifically, the first rotor 170a may be disposed above the first stator 141a.

A second rotor 170b may be disposed below the second stator 141b.

A third rotor 190 may be provided between the first stator 141a and the second stator 141b.

On one side of the first rotor (170a) and the second rotor (170b) is a magnetic support unit 210 is disposed so that the repulsive force acts with the first rotor (170a) and the second rotor (170b), respectively Each may be provided.

The magnetic support unit 210 may be provided at an upper side of the first rotor 170a and a lower side of the second rotor 170b, respectively.

Each of the magnetic support units 210 may be coupled to the support plate 214, respectively.

Each of the support plates 214 may be coupled to the rotation shaft 111 so as to be relatively movable.

On the other hand, the stator 140 may be configured to have a substantially rectangular plate shape having a relatively thin thickness.

The first stator 141a and the second stator 141b may include a stator frame 143 and a stator coil 163 coupled to the stator frame 143. Here, since the configurations of the first stator 141a and the second stator 141b are similar, the first stator 141a will be described below by way of example.

As shown in FIGS. 7 and 8, the stator frame 143 may have a rectangular plate shape having a relatively thin thickness. Here, the stator frame 143 may be composed of a nonmagnetic material. For example, the stator frame 143 may be made of a synthetic resin member or aluminum (Al).

The stator frame 143 may be provided with a plurality of slots 145.

The slot 145 may be configured to include an outer slot 146 and an inner slot 147 disposed concentrically with each other.

The slot 145 may be formed through the stator frame 143.

The slot 145 may have a substantially rectangular shape.

The outer slot 146 and the inner slot 147 may be configured to be spaced apart at equal intervals along each circumferential direction. Here, the second stator 141b has the same position along the size and radial direction of the first stator 141a, the outer slot 146 and the inner slot 147, but different positions along the circumferential direction. Can be configured.

For example, the outer slot 146 of the first stator 141a may be disposed between two outer slots 146 adjacent to each other in the circumferential direction of the second stator 141b in a plane projection. In addition, the outer slot 146 of the second stator 141b may be disposed between two outer slots 146 adjacent to each other in the circumferential direction of the first stator 141a during a plane projection.

The through hole 148 may be formed in the central region of the stator frame 143.

The rotating shaft 111 may pass through the through hole 148.

The through hole 148 may be configured to have an extended size compared to the rotation shaft 111. Here, the through hole 148 may reduce the weight of the stator frame 143 in addition to the rotation shaft 111 passes.

Coupling holes 149 may be provided in corner regions of the stator frame 143, respectively.

Support members 152 may be coupled to the coupling holes 149, respectively.

The support member 152 may include, for example, a rod-shaped rod 153 and a plurality of spacers having a reduced length compared to the rod 153 and into which the rod 153 is inserted. The stator frame 143 may be supported at predetermined positions, respectively, to maintain a predetermined air gap with the rotors 170a, 170b, and 190.

The stator coil 163 may be wound in a predetermined direction. For example, the stator coil 163 may be configured to be wound along the circumferential direction of the slot 145.

The stator coil 163 may be configured to include an outer coil 165 inserted into the outer slot 146 and an inner coil 167 inserted into the inner slot 147.

The outer coil 165 and the inner coil 167 may be wound along the circumferential direction of the outer slot 146 and the inner slot 147, respectively. Here, the outer coil 165 and the inner coil 167 may be configured to have the same wire diameter and the number of turns.

Here, the outer coil 165 and the inner coil 167 may be configured such that, for example, the outer coil 165 and the inner coil 167 are arranged in a zigzag so that the centers along the circumferential direction do not coincide with each other. .

More specifically, the inner coil 167 may be configured such that the center c2 is disposed between each center c1 of the two outer coils 165 adjacent to each other in the circumferential direction. As a result, cogging torque may be reduced when the rotors 170a, 170b, and 190 are rotated, and vibration and noise caused by cogging torque may be suppressed. Here, the centers along the circumferential direction of the inner coil 167 and the outer coil 165 may be arranged so that they do not coincide with each other as much as possible, thereby reducing cogging torque during rotation of the rotors 170a, 170b, and 190. It may be desirable.

In the present embodiment, as shown in FIG. 6, the outer coil 165 may be configured as sixteen, and the inner coil 167 may be configured as ten. The centers of some of the outer coil 165 and the inner coil 167 shown in FIG. 6 may be disposed to coincide with each other. More specifically, the centers of the outer coil 165 and the inner coil 167 disposed on the upper side and the lower side of FIG. 6 are disposed to coincide with each other. However, except for these, all of them are configured such that the center c2 of the inner coil 167 is disposed between the centers c1 of two outer coils 165 adjacent to each other, thereby reducing cogging torque when the rotor is rotated. Can be. According to this configuration, the rotor (170a. 170b, 190) can be relatively rotated with respect to the stator 140 even if a relatively small external force acts on the rotary shaft (111). 6, the outer coil 165 and the inner coil 167 of the second stator 141b have an outer coil 165 and an inner coil whose centers of the first stators 141a coincide with each other. It can be seen that the center (line) of the outer coil 165 and the center (line) of the inner coil 167 are arranged to coincide with each other at a position rotated by a predetermined angle in the circumferential direction as compared with 167. Here, when the sizes of the stators 140, 141a and 141b are changed, the centers of the outer coil 165 and the inner coil 167 may be arranged in a zigzag without being coincident with each other.

The core 168 may be provided at the center of the stator coil 163.

The core 168 may be formed of a ferrite core.

The stator coil 163 may be wound around the core 168.

An insulating member 169 may be provided between the stator coil 163 and the core 168. As a result, the stator coil 163 and the core 168 may be insulated from each other.

The stator coil 163 may be configured to have a single phase or three phases. Hereinafter, the case where the stator coil 163 is provided with three phases will be described by way of example.

More specifically, as shown in FIG. 10, the stator coil 163 may be arranged in three phases (eg, 'u-phase', 'v-phase', 'w-phase') in the circumferential direction. have.

The stator coil 163 may be configured such that the same phases are connected in series with each other.

One end of each phase of the stator coil 163 may be drawn out to be connected to a load (not shown) side, and the other ends may be simultaneously connected to each other at one point (N). Here, the outer coil 165 and the inner coil 167 may be connected to each other by various methods. For example, each phase of the outer coil 165 and the inner coil 167 may be connected in series, and the first stator 141a and the second stator 141b may be connected in series or in parallel with each other.

On the other hand, the first rotor (170a) and the second rotor (170b), the disk-shaped frame 171 (actually the first rotor frame 172a and the second rotor frame 172b and the frame, An outer permanent magnet 175 and an inner permanent magnet 176 disposed concentrically on one side of 171, and a border permanent magnet 177 disposed along the circumferential direction on the other edge of the frame 171. Each may be provided.

The frames 171 (172a and 172b) may be made of a magnetic material.

The first rotor 170a may be disposed above the first stator 141a.

The second rotor 170b may be disposed below the second stator 141b.

More specifically, the first rotor 170a may include a first rotor frame 172a disposed on one side (upper side in the present embodiment) of the first stator 141a and the first stator ( The outer permanent magnet 175 and the inner permanent magnet provided on one side (bottom surface in the present embodiment) of the first rotor frame 172a to correspond to the outer coil 165 and the inner coil 167 of 141a. 176 may be provided. An edge permanent magnet 177 may be provided on an upper surface of the first rotor frame 172a.

The second rotor 170b may include a second rotor frame 172b disposed on one side of the second stator 141b (lower side in this embodiment), and an outer coil of the second stator 141b. 165 and the outer permanent magnet 175 and the inner permanent magnet 176 provided on one side (top surface in the present embodiment) of the second rotor frame 172b to correspond to the inner coil 167, Can be configured. A bottom permanent magnet 177 may be provided on the bottom surface of the second rotor frame 172b.

Here, the second rotor 170b differs only in the installation position from the first rotor 170a, but substantially similar in structure to each other, and thus a detailed description thereof will be replaced with the description of the first rotor 170a.

More specifically, as shown in FIGS. 10 to 12, the first rotor 170a may include a disc shaped first rotor frame 172a.

The first rotor frame 172a may be composed of a disc or disc of relatively thin thickness.

A shaft hole 173 may be formed in the center region of the first rotor frame 172a to allow the rotation shaft 111 to be inserted therethrough.

An outer permanent magnet 175 and an inner permanent magnet 176 are provided on the bottom of the first rotor frame 172a to correspond to the outer coil 165 and the inner coil 167 of the first stator 141a, respectively. Can be. More specifically, the virtual circle (circumference) in which the outer permanent magnet 175 and the inner permanent magnet 176 are disposed, respectively, is a virtual circle (circumference) in which the outer coil 165 and the inner coil 167 are disposed. It may have the same diameter as.

The outer permanent magnet 175 and the inner permanent magnet 176 may be configured to be provided with different magnetic poles (N pole, S pole) in the thickness direction.

The outer permanent magnet 175 and the inner permanent magnet 176 may be configured to have the same size.

Meanwhile, a plurality of edge permanent magnets 177 may be provided on an upper surface of the first rotor frame 172a along the edge.

The frame permanent magnet 177 may be supported by the support frame 180.

The support frame 180 may be configured, for example, in a ring shape.

The support frame 180 may include an outer frame 181 and an inner frame 182.

The edge permanent magnet 177 may be inserted between the outer frame 181 and the inner frame 182.

A gap maintaining member 183 may be provided between the outer frame 181 and the inner frame 182 so that the frame permanent magnet 177 may maintain a constant gap.

Here, the edge permanent magnet 177 may be magnetized along the radial direction. That is, the edge permanent magnet 177 may be configured to have magnetic poles (N pole, S pole) different from the outer surface and the inner surface along the radial direction.

Each of the edge permanent magnets 177 may be disposed in the same direction to have the same magnetic poles.

As shown in FIG. 13, the outer permanent magnet 175 and the inner permanent magnet 176 may be configured to be arranged in zigzag, for example, such that centers along the circumferential direction do not coincide with each other.

More specifically, the inner permanent magnet 176 is such that the center (line) c2 along the circumferential direction is disposed between the center (line) c1 of two outer permanent magnets 175 adjacent to each other along the circumferential direction. Can be configured. As a result, cogging torque during rotation of the rotor can be reduced, and vibration and noise caused by cogging torque can be suppressed.

Meanwhile, as shown in FIGS. 14 and 15, the third rotor 190 includes a frame 191 disposed between the first stator 141a and the second stator 141b and the frame 191. The outer permanent magnet 175 and the inner permanent magnet 176 disposed on both sides of the first stator 141a and the second stator 141b to correspond to the outer coil 165 and the inner coil 167, respectively. It may be configured to include. Here, the outer permanent magnet 175 and the inner permanent magnet 176 of each rotor may be formed in the same size.

The frame 191 may be composed of a circular plate having a relatively thin thickness.

A shaft hole 193 may be formed through the central region of the frame 191 so that the rotating shaft 111 can be inserted therein.

Upper and lower surfaces of the frame 191 correspond to the outer coil 165 and the inner coil 167 of the first stator 141a and the second stator 141b, respectively. Magnets 176 may be provided respectively. Here, the outer permanent magnet 175 on the upper side of the frame 191 and the outer permanent magnet 175 on the lower side of the frame 191 may be disposed such that their centers have phase differences with each other in the circumferential direction. For example, in the planar projection, each outer permanent magnet 175 provided on the upper surface of the frame 191 may be disposed between two adjacent outer permanent magnets 175 provided on the bottom of the frame 191, respectively. Can be configured. On the contrary, each of the outer permanent magnets 175 provided on the bottom of the frame 191 may be disposed between the two outer permanent magnets 175 disposed on the upper surface of the frame 191 in the plane projection.

On the other hand, the generator module 130 of the present embodiment is disposed on each side of the first rotor (170a) and the second rotor (170b) in the axial direction, respectively, the permanent rim of the first rotor (170a) The magnet 177 and the edge permanent magnet 177 of the second rotor 170b and the magnetic support unit 210 which is disposed to act on the repulsive force may be further included.

More specifically, the magnetic support unit 210 is a first magnetic support unit 211a disposed above the first rotor 170a and a second disposed below the second rotor 170b. The magnetic support unit 211b may be provided.

Since the first magnetic support unit 211a and the second magnetic support unit 211b have similar configurations, the second magnetic support unit 211b will be described below by way of example for convenience of description.

The second magnetic support unit 211b may include a plurality of permanent magnets 212 disposed to be spaced apart from the edge permanent magnet 177 of the second rotor 170b with a predetermined gap in the axial direction. Can be.

The voids may be, for example, about 10 mm. Here, of course, the gap can be appropriately adjusted in consideration of the strength of the magnet.

The second magnetic support unit 211b may include a support frame 213 for supporting the plurality of permanent magnets 212 spaced apart at predetermined intervals along the circumferential direction.

The support frame 213 may have a circular ring shape.

The plurality of permanent magnets 212 may be coupled to the inner diameter surface of the support frame 213 at predetermined intervals.

The permanent magnet 212 may be configured to have different magnetic poles (N pole, S pole) in the radial direction.

The permanent magnets 212 may be disposed to have the same magnetic poles (N pole, S pole) along the circumferential direction. Accordingly, the permanent magnet 212 may have a repulsive force between the edge permanent magnet 177 of the second rotor 170b. As a result, the second rotor 170b and the magnetic support unit 211b may rotatably support the second rotor 170b at a predetermined position while maintaining a constant interval therebetween.

The second magnetic support unit 211b may be coupled to the support plate 214. As a result, the second magnetic support unit 211b may stably support the second rotor 170b at a predetermined position.

The support plate 214 may be configured in a substantially square plate shape.

A shaft hole 215 may be formed through the center of the support plate 214 so that the rotation shaft 111 can be inserted therein.

The bottom surface of the support plate 214 may be provided with a bearing 216 for rotatably supporting the lower region of the rotary shaft 111 inserted into the shaft hole 215. Although not illustrated in detail, the bearing 216 may be configured to include a radial bearing (not shown) and / or a thrust bearing (not shown).

Coupling holes 217 may be formed through each corner of the support plate 214. As a result, the support member 152 may be coupled.

On the other hand, each fan assembly 120, as shown in Figure 18 and 19, a plurality of blades 122 spaced apart around the rotation axis 111, and the upper and lower parts of the blade 122 It may be configured to include a support member 124 disposed on each of which supports the blade 122.

As shown in FIGS. 20 and 21, the blade 122 may have a curved surface in which the radiuses of curvature r1, r2, and r3 increase as the distance from the rotational axis 111 increases.

The blade 122 may be spaced apart from the rotation shaft 111 by a predetermined distance.

For example, the blade 122 may be configured such that the inner end portion is positioned on a virtual circumference (actually, the disc portion 125 to be described later) having a predetermined diameter around the rotation shaft 111.

The blades 122 may be spaced apart at equal intervals along the rotational direction.

The support member 124 may be provided on the upper side and the lower side of the blade 122, respectively.

Each of the supporting members 124 includes a disk portion 125 having a predetermined diameter and a blocking portion extending radially around the disk portion 125 to block the upper and lower sides of the blade 122. 127 may be provided. As a result, the blade 122 may be configured to have a bucket shape in which both ends (upper and lower sides in the drawing) of the blade 122 are blocked along the axial direction.

A shaft hole 126 may be formed in the central region of the disc 125 to allow the rotation shaft 111 to be inserted therethrough.

The outer edge of the blocking part 127 may be configured to have the same radius of curvature as the radius of curvature r1, r2, r3 of the blade 122. The inner edge of the blocking part 127 may be configured to have, for example, a radius of curvature similar to the second radius of curvature r2 of the blade 122. As a result, as shown in FIG. 20, the interval between the blocking portions 127 may be gradually reduced from the outer end of the blade 122 toward the inner end. According to this configuration, the torque for rotating the fan assembly 120 is increased when the inflow of wind between the blades 122, the resistance of the air acting in the opposite direction of the fan assembly 120 is relatively small The fan assembly 120 can be smoothly rotated even at a relatively low air flow rate.

The fan assembly 120 of the present embodiment having such a configuration does not need to limit the rotational speed of the fan assembly 120 because the rotational speed does not increase more than a certain speed even if the wind speed is increased. Accordingly, a speed limiting device having a relatively small capacity may be provided when a speed limiting device (not shown) such as a brake device is not added or provided in advance.

In this configuration, when the fan assembly 120 rotates, the rotational force of the fan assembly 120 may be transmitted to the rotors 170a, 170b, and 190 through the rotation shaft 111. As a result, the rotors 170a, 170b, and 190 may move relative to the stator 140.

When the rotors 170a, 170b, and 190 rotate relative to the stator 140, electromotive force is generated by the electromagnetic induction in the stator coil 163, so that an induced current may flow. That is, the first rotor 170a, the second rotor 170b, and the third rotor 3 with respect to each of the outer coil 165 and the inner coil 167 of the first stator 141a and the second stator 141b. When the outer permanent magnet 175 and the inner permanent magnet 176 of the rotor 190 rotates relative to each other, the outer coil 165 and the inner coil 167 of the first stator 141a and the second stator 141b. ), An induced current may flow. Induction currents of the outer coil 165 and the inner coil 167 may be connected to a load circuit (not shown) through a predetermined line.

Here, each inner permanent magnet 176 of each rotor 170a, 170b, 190 is disposed between the outer permanent magnet 175, each inner coil 167 of each stator 140 is each By being arranged between the outer coil 165, the cogging torque can be reduced during the rotation of the rotor (170a, 170b, 190). As a result, the rotational resistance becomes small, and the rotors 170a, 170b, and 190 are smoothly rotated by a relatively small force (wind force) to perform a power generation function. In addition, the first rotor (170a) and the second rotor (170b) is supported by the magnetic support unit 210 to maintain a magnetically balanced even when the external force acting in the transverse shaft 111 The rotors 170a, 170b, and 190 may rotate smoothly. Accordingly, the speed of the rotor (170a, 170b, 190) can be relatively further increased. As a result, current induced in the stator coil 163 may be increased, and power generation efficiency may be improved.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 23 and 24. The same and equivalent parts as those of the foregoing and illustrated embodiments may be described by omitting the same reference numerals for convenience of description of the drawings. In addition, duplicate descriptions of some components may be omitted.

As described above, the wind power generator according to another embodiment of the present invention, the rotary shaft 111, the fan assembly 120 rotatably coupled to the rotary shaft 111, and the fan assembly 120 is interlocked with It may be configured to include a generator module 130 that is connected to be possible to generate a current during the rotation of the fan assembly 120.

The fan assembly 120 may be configured in plural and may be simultaneously coupled to the rotation shaft 111 to be spaced apart along the axial direction of the rotation shaft 111.

The generator module 130 is rotatable about the stator 140 with respect to the stator 140 and the same rotating shaft 111, and are disposed on both sides of the stator 140 along the axial direction, respectively. The first rotor 170a and the second rotor 170b may be provided.

The stator 140 may include, for example, a first stator 141a and a second stator 141b spaced apart along the axial direction.

The first stator 141a and the second stator 141b may be spaced apart from each other in the vertical direction in the drawing.

The first rotor 170a may be provided above the first stator 141a.

The second rotor 170b may be disposed below the second stator 141b.

A third rotor 190 may be provided between the first stator 141a and the second stator 141b.

On the other hand, the generator module 130 of the present embodiment, the magnetic support unit 230 for magnetically supporting the first rotor 170a, the second rotor 170b and the third rotor 190. Can be configured.

More specifically, the magnetic support unit 230, the first rotor (170a), third outside the first rotor (170a), the second rotor (170b) and the third rotor (190) The second rotor 170b and the third rotor 190 may be configured to magnetically support each.

Each of the magnetic support units 230 includes a square plate-shaped frame 233 having a rotor accommodating portion 235 at the center and accommodating an inner diameter of the rotor accommodating portion 235. It may be configured with a plurality of permanent magnets 241 to be.

The rotor accommodating part 235 and the permanent magnet 241 may be configured to maintain a predetermined air gap with the rotors 170a, 170b, 190 accommodated therein. For example, the pores may be configured to about 10 mm. Here, the voids can be adjusted appropriately.

The magnetic support unit 230 may include a first magnetic support unit 231a for magnetically supporting the first rotor 170a and a second magnetic force for magnetically supporting the second rotor 170b. A support unit 231b and a third magnetic support unit 231c for magnetically supporting the third rotor 190 may be provided.

The first magnetic support unit 231a and the second magnetic support unit 231b may have the edges such that the edge permanent magnets 177 and the repulsive force of the first rotor 170a and the second rotor 170b act on each other. It may be configured to have a magnetic pole opposite to the permanent magnet 177. That is, the permanent magnets 241 may be disposed to have the same magnetic poles (N pole, S pole) as the edge permanent magnet 177.

Meanwhile, the third magnetic support unit 231c may be configured to have the same magnetic pole array as the magnetic pole array along the circumferential direction of the outer permanent magnet 175 of the third rotor 190. That is, the permanent magnets 241 of the second magnetic support unit 231c may be configured such that the N pole and the S pole are alternately disposed along the circumferential direction. As a result, magnetic forces (human and repulsive forces) between the third magnetic support unit 231c and the outer permanent magnet 175 of the third rotor 190 may be balanced.

In this configuration, when the fan assembly 120 rotates, the rotational force of the fan assembly 120 is transmitted through the rotation shaft 111 so that the rotors 170a, 170b, and 190 may rotate. In this case, each of the rotor (170a, 170b, 190) each inner permanent magnet 176 is disposed between the outer permanent magnet 175, respectively, the stator 140 is the inner coil between the outer coil 165 Since 167 is configured to be disposed respectively, cogging torque during rotation of the rotors 170a, 170b, and 190 may be reduced. As a result, the rotational resistance becomes small, and the rotors 170a, 170b, and 190 may be smoothly rotated by a relatively small force (wind force). In addition, the first rotor (170a) and the second rotor (170b) is supported by the magnetic support unit 230 to maintain a magnetically balanced when the external force acts on the rotation axis 111 Edo is easily returned to the initial position by the magnetic force can be rotated smoothly. Accordingly, the speed of the rotor (170a, 170b, 190) can be relatively further increased. As a result, an electric current induced in the stator coil 163 may be increased to increase power generation efficiency.

In the above-described and illustrated embodiments, the case in which the rotating shaft of the fan assembly and the rotating shaft of the rotor are configured to be the same is described, for example. May be interconnected.

In addition, between the rotation axis of the fan assembly and the rotation axis of the rotor may be provided with a transmission or a speed increaser capable of varying the speed.

In the above-described and illustrated embodiments, the case where the stator is configured to include the first stator and the second stator is described as an example. However, the stator may be one or three or more.

In the above, specific embodiments of the present invention have been shown and described. However, the present invention can be embodied in various forms without departing from the spirit or essential features thereof, so the embodiments described above should not be limited by the details of the detailed description.

Further, even when the embodiments not listed in the detailed description have been described, it should be interpreted broadly within the scope of the technical idea defined in the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

111: rotating shaft 120: fan assembly
122: blade 124: support member
125: disc portion 127: blocking portion
130: generator module 140: stator
141a: first stator 141b: second stator
143: stator frame 146: outer slot
147: inner slot 163: stator coil
165: outer coil 167: inner coil
170a: first rotor 170b: second rotor
175: outer permanent magnet 176: inner permanent magnet
177: permanent permanent magnet 180,213: support frame
181: outer frame 182: inner frame
183: spacing member 190: third rotor
210: magnetic support unit 212: permanent magnet
214: support plate

Claims (12)

Stator;
First and second rotors rotatable about the stator about the same rotation axis and disposed on both sides of the stator in an axial direction, respectively;
Generator module comprising a. The method of claim 1, wherein the stator,
A frame having an outer slot and an inner slot formed concentrically with each other;
An outer coil provided in the outer slot; And
An inner coil provided in the inner slot;
The outer slot and the inner slot is a generator module, characterized in that each formed spaced at equal intervals along the circumferential direction. The method of claim 2,
The first rotor and the second rotor generator module characterized in that it comprises an outer permanent magnet corresponding to the outer coil and the inner permanent magnet corresponding to the inner coil, respectively. The method of claim 2,
Each of the inner coils are generator modules, characterized in that the center of the circumferential direction is disposed between the center of the two outer coils adjacent to each other in the circumferential direction. The method of claim 3,
Each of the inner permanent magnets is a generator module, characterized in that the center of the circumferential direction is disposed between the center of the two outer permanent magnets adjacent to each other in the circumferential direction. The method of claim 1,
The stator includes a first stator and a second stator spaced apart from each other along the axial direction generator module. The method according to claim 6,
The first stator and the second stator, the generator module characterized in that it comprises an outer coil and the inner coil are arranged concentrically with each other. The method of claim 7, wherein
The generator module further comprises a third rotor disposed between the first stator and the second stator. The method of claim 3,
And a magnetic support unit disposed on each side of the first rotor and the second rotor along an axial direction to magnetically support the first rotor and the second rotor, respectively. 9. The method of claim 8,
Generator module further comprising a magnetic support unit for magnetically supporting the third rotor. A rotating shaft;
A fan assembly rotatably coupled to the rotation shaft; And
The generator module of claim 1, wherein the generator module is connected to the fan assembly and generates a current when the fan assembly is rotated.
Wind power generator comprising a. The method of claim 11,
The rotating shaft is disposed in the vertical direction,
The fan assembly is a wind power generator, characterized in that consisting of a plurality of coupled to the axial spaced apart.

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