JP2010001747A - Wind turbine generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind turbine generator capable of securing a desired amount of power even when a wind power is small. <P>SOLUTION: A connection shaft 11 is connected, through a non-contact drive transmission mechanism utilizing magnetic force, to the rotating shaft of each of three wind turbines 6 which are attached to a side frame 2. A connection shaft 12 is connected, through a non-contact drive transmission mechanism utilizing magnetic force, to the rotating shaft of each of three wind turbines 7 which are attached to a side frame 3. The connection shafts 11 and 12 are connected, through non-contact drive transmission mechanisms utilizing magnetic force, to both ends of connection shafts 13 and 14 which serve also as the rotating shafts of wind turbines 8 and 9 which are attached between the side frame 2 and the side frame 3. The drive shaft of a generator 10 is connected to one end of the connection shaft 13. The rotating forces of the rotating shafts of the wind turbines 6-9 are collected, and the collected force is transmitted to the drive shaft 23 of the generator 10 and the generator 10 is driven. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wind power generator, and more particularly to an apparatus for generating power by rotating a plurality of wind turbines.

In recent years, wind power generation has attracted attention as the use of clean energy. A wind turbine such as a so-called propeller type or Darius type receives wind to rotate the output shaft, and a generator connected to the output shaft is driven to generate power.
In such wind power generation, it is required to secure a desired power generation amount by effectively using natural wind power.
For example, Patent Document 1 proposes a wind power generator that arranges a plurality of wind turbines in a straight line and secures a power generation amount by directly connecting a dedicated generator to each of the plurality of wind turbines.

JP 2003-227455 A

However, in the apparatus of Patent Document 1, the corresponding generator is driven by each windmill. However, if the energy density of wind power is small, the amount of power generation that can be generated by one windmill becomes extremely small, and the desired power generation amount is reduced. It becomes difficult to secure the amount of power generation.
The present invention has been made to solve such problems, and an object of the present invention is to provide a wind turbine generator that can secure a desired power generation amount even when the wind power is small.

  A wind turbine generator according to the present invention includes a plurality of wind turbines having different rotation shafts, one output shaft, a rotation transmission mechanism for transmitting the rotational force of the rotation shafts of the plurality of wind turbines to the output shaft, and an output And one generator connected to the shaft.

Preferably, at least one of the plurality of wind turbines has a rotation axis oriented in a direction different from the rotation axes of the other wind turbines.
The rotation transmission mechanism preferably includes a non-contact type drive transmission mechanism using magnetic force.
Further, a support structure made of an aluminum profile is further provided, and a plurality of wind turbines, an output shaft, and a generator can be supported by the support structure.
The wind turbine support unit further includes a main body part surrounded by a windbreak wall and opened upward, and a windmill support part that supports a plurality of windmills and is attached to the main body part so as to be undulated. May be configured such that a plurality of windmills are positioned above the main body portion, and the windmill support portion is tilted to accommodate the plurality of windmills inside the main body portion during a storm.

  According to the present invention, the rotational force of the rotating shafts of the plurality of windmills is transmitted to the output shaft by the rotation transmission mechanism, so that the generator can be driven by collecting the rotational forces obtained by the plurality of windmills. Even if it is small, it is possible to secure a desired power generation amount.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows the overall configuration of the wind turbine generator according to Embodiment 1. The wind turbine generator has a support structure 1 incorporated in a substantially frame-like frame shape. The support structure 1 includes a pair of side frames 2 and 3 that face each other, and connecting members 4 and 5 that connect lower portions of the side frames 2 and 3 to each other. The side frame 2 includes a pair of horizontal members 2a and 2b and a pair of vertical members 2c and 2d. Similarly, the side frame 3 includes a pair of horizontal members 3a and 3b and a pair of vertical members 3c and 3d.

Three wind turbines 6 each having a vertical axis of rotation are attached to the side frame 2 so as to be rotatable at a predetermined interval, and each of the side frames 3 also has a vertical axis of rotation. Three wind turbines 7 are rotatably mounted at a predetermined interval.
In addition, wind turbines 8 and 9 having a horizontal rotation shaft between the upper end corner of the side frame 2 and the upper end corner of the side frame 3 are rotatably mounted above the connecting members 4 and 5, respectively. It has been.
Each of these wind turbines 6 to 9 has blades having a blade shape, and the rotation shafts of the wind turbines 6 to 9 are connected to each other by a rotation transmission mechanism described later.
Furthermore, one generator 10 is arranged outside one upper end corner of the side frame 2.

  The connecting members 4 and 5, the horizontal members 2a, 2b, 3a and 3b, and the vertical members 2c, 2d, 3c and 3d are each formed from an aluminum profile having a cross-sectional shape as shown in FIG. Since this aluminum profile has a hollow portion, it is lightweight, and by using a plurality of grooves D formed along the longitudinal direction, the aluminum profiles can be assembled together and various members can be attached to the aluminum profile. It can be done easily and reliably.

Here, the rotation transmission mechanism will be described. As shown in FIG. 3, the connecting shaft 11 is connected to the rotation shafts of the three wind turbines 6 attached to the side frame 2 via non-contact type drive transmission mechanisms using magnetic force, A connecting shaft 12 is connected to the rotating shafts of the three wind turbines 7 attached to the side frame 3 through non-contact type drive transmission mechanisms using magnetic force.
Further, a non-contact type drive transmission mechanism using a magnetic force is provided at both ends of the connecting shaft 13 that also serves as the rotating shaft of the windmill 8 attached between the side frame 2 and the side frame 3. The connecting shafts 11 and 12 are connected to each other, and magnetic forces are respectively used at both ends of the connecting shaft 14 that also serves as the rotating shaft of the windmill 9 attached between the side frame 2 and the side frame 3. The connecting shafts 11 and 12 are connected via the non-contact type drive transmission mechanism. The connecting shaft 13 forms the output shaft in the first embodiment, and the drive shaft of the generator 10 is connected to one end of the connecting shaft 13.

As shown in FIG. 4, a ball bearing 16 is fixed to the horizontal member 2a of the side frame 2 via a holder 15, and a connection shaft 11 is supported by the ball bearing 16 so as to be rotatable around its axis. ing. A ball bearing 17 is fixed to the lower part of the horizontal member 2a, and a rotating shaft 18 of the wind turbine 6 is supported on the ball bearing 17 so as to be rotatable around the axis.
A cylindrical magnetic member 19 is fixed coaxially to the connecting shaft 11 extending in the horizontal direction, and a cylindrical magnetic member 20 is fixed coaxially to the rotating shaft 18 of the wind turbine 6 extending in the vertical direction. These magnetic members 19 and 20 form a non-contact type drive transmission mechanism using magnetic force. That is, the magnetic member 19 and the magnetic member 20 are arranged in close contact with each other, but the rotational torque of one magnetic member is transmitted to the other magnetic member.
Similarly, the rotation shafts of the three wind turbines 6 and the connection shaft 11 are connected to each other via a non-contact type drive transmission mechanism, and the rotation shafts of the three wind turbines 7 and the connection shaft 12 are each set to a non-contact type. It is connected via a drive transmission mechanism.

As shown in FIG. 5, a ball bearing 21 is fixed to the horizontal member 2 a of the side frame 2, and a connection shaft 13 that also serves as a rotating shaft of the windmill 8 is attached to the ball bearing 21 around the axis. It is rotatably supported. Further, the generator 10 is attached to the vertical member 2 c of the side frame 2 via a bracket 22, and the drive shaft 23 of the generator 10 is connected to one end portion of the connecting shaft 13 via a coupling 24.
A cylindrical magnetic member 25 is fixed coaxially to one end portion of the connection shaft 11 adjacent to the connection shaft 13, and is coaxially cylindrical to the connection shaft 13 in a portion adjacent to the connection shaft 11. The magnetic member 26 is fixed, and the magnetic members 25 and 26 form a non-contact type drive transmission mechanism using magnetic force. That is, the magnetic member 25 and the magnetic member 26 are arranged in close contact with each other, but the rotational torque of one magnetic member is transmitted to the other magnetic member.
Similarly, the connecting shafts 11 and 12 are connected to both ends of the connecting shaft 13 via a non-contact type drive transmission mechanism using magnetic force, respectively, and the both ends of the connecting shaft 14 are connected to each other using magnetic force. The connecting shafts 11 and 12 are connected via a contact type drive transmission mechanism.

The above-described connecting shafts 11 to 14, ball bearings 16 and 21, and magnetic members 19, 20, 25, and 26 constitute a rotation transmission mechanism.
By this rotation transmission mechanism, the three wind turbines 6 attached to the side frame 2, the three wind turbines 7 attached to the side frame 3, and the part frame 2 and the side frame 3 are attached. The rotational force of the rotating shafts of the wind turbines 8 and 9 is transmitted to the connecting shaft 13 that is the output shaft.

Therefore, when the wind turbines 6 to 9 receive wind and rotate around the rotation shaft, the rotational forces of the rotation shafts of the wind turbines 6 to 9 are collected and transmitted to the connection shaft 13, and the generator 10 is driven from the connection shaft 13. A rotational force is transmitted to the shaft 23 to drive the generator 10 to generate power. For this reason, even if the wind power is small, it is possible to obtain a large amount of power generation.
In addition, since the wind turbines 6 and 7 having the vertical rotation axis and the wind turbines 8 and 9 having the horizontal rotation shaft are provided, any wind turbine can wind against the wind from any direction. In response to this, all the windmills 6 to 9 are rotated via the rotation transmission mechanism.

  In the first embodiment, since the support structure 1 is formed from an aluminum profile and only one generator 10 is used, the entire wind power generator can be reduced in weight and the manufacturing cost can be reduced.

Since the wind turbines 6 to 9 require a predetermined amount of wind power to rotate once stopped, the generator 10 is rotated as a motor by supplying a small amount of power from a battery or the like to the generator 10 when there is no wind. It is preferable to drive and rotate the wind turbines 6 to 9 at a low speed via the rotation transmission mechanism.
On the other hand, in the event of a storm due to a typhoon or the like, it is desirable to force the wind turbines 6 to 9 to be in a rotation prohibited state in order to prevent damage to the device. For example, as shown in FIG. 6, a rod-shaped rotation restricting member 28 is rotatably attached to the side frame 2 via the arm portion 27, and the rotation restricting member 28 is brought into contact with each windmill 6 during a storm. Thus, the wind turbine 6 can be in a rotation prohibited state. It is preferable to attach the same rotation restricting member to the other wind turbines 7 to 9 as well.

  In the first embodiment, the wind turbine generator having the six wind turbines 6 and 7 having the vertical rotation shaft and the two wind turbines 8 and 9 having the horizontal rotation shaft has been described. However, the present invention is not limited to this, as long as the rotational force of two or more wind turbines having different rotation shafts is transmitted to the output shaft by the rotation transmission mechanism to drive one generator. At this time, if at least one of the plurality of wind turbines has a rotation axis directed in a direction different from the rotation axis of the other wind turbines, more stable power generation is performed regardless of the wind direction. be able to.

Embodiment 2
FIG. 7 shows the configuration of the wind turbine generator according to the second embodiment. A windmill support portion 32 is attached to the box-shaped main body portion 31, and a plurality of windmills 33 are rotatably attached to the windmill support portion 32. The main body 31 includes a solar cell panel 35 that is surrounded by a windbreak wall 34 and that is open at the top and is further installed in the front. The windmill support portion 32 is formed in a substantially planar frame shape, and supports a total of 20 windmills 33 arranged in four rows and five rows and having rotation axes parallel to each other.

  In FIG. 7, horizontal connection shafts 36 are connected to the rotation shafts of the top five wind turbines 33 and the second five wind turbines 33 through non-contact type drive transmission mechanisms using magnetic force. Similarly, the horizontal connecting shaft 37 is connected to the rotation shafts of the five wind turbines 33 at the third stage and the five wind turbines 33 at the fourth stage via non-contact type drive transmission mechanisms using magnetic force. Has been. Further, the connecting shafts 36 and 37 are connected to the connecting shaft 38 arranged in the vertical direction on one side of the windmill support portion 32 through a non-contact type drive transmission mechanism using magnetic force. The connecting shaft 38 forms the output shaft in the second embodiment, and the drive shaft of the generator 39 is connected to one end of the connecting shaft 38.

  As shown in FIG. 8, a horizontal connection shaft 36 is supported on the windmill support portion 32 via a ball bearing 40 so as to be rotatable around the axis, and is coaxial with the rotation shaft 41 of the uppermost windmill 33. A non-contact type drive transmission mechanism using magnetic force is formed by the cylindrical magnetic member 42 fixed on the upper surface and the cylindrical magnetic member 43 fixed on the same axis with respect to the connecting shaft 36. Similarly, a magnetic force is generated by a cylindrical magnetic member 45 coaxially fixed to the rotating shaft 44 of the second-stage wind turbine 33 and a cylindrical magnetic member 46 coaxially fixed to the connecting shaft 36. A non-contact type drive transmission mechanism utilizing the above is formed.

Further, a vertical connecting shaft 38 is supported by the windmill support portion 32 via a ball bearing 47 so as to be rotatable around its axis, and is a cylindrical magnetic member 48 coaxially fixed to one end of the connecting shaft 36. And a cylindrical magnetic member 49 fixed coaxially with respect to the connecting shaft 38 forms a non-contact type drive transmission mechanism using magnetic force.
Similarly, the rotating shaft of the third-stage windmill 33 and the rotating shaft of the fourth-stage windmill 33 are connected to the connecting shaft 37 in the horizontal direction and connected by a non-contact type drive transmission mechanism using magnetic force. One end of 37 is coupled to the vertical coupling shaft 38 by a non-contact type drive transmission mechanism using magnetic force.

The above-described connecting shafts 36 to 38, ball bearings 40 and 47, and magnetic members 42, 43, 45, 46, 48, and 49 constitute a rotation transmission mechanism.
By this rotation transmission mechanism, the rotational force of all the rotation shafts of the 20 wind turbines 33 is transmitted to the connecting shaft 38 which is an output shaft.

  As shown in FIG. 9, the windmill support portion 32 is attached to the main body portion 31 so as to be raised and lowered. For this reason, when the windmill support portion 32 is erected, all of the 20 windmills 33 are positioned above the main body portion 31 to receive the wind, but when the windmill support portion 32 is tilted, it is shown by a broken line in FIG. As described above, all of the 20 wind turbines 33 are housed inside the main body 31.

At the time of driving the wind turbine generator, as shown in FIGS. 7 and 9, the windmill support portion 32 is erected and receives wind from the 20 windmills 33. Thereby, the rotational force of the rotating shafts of the 20 wind turbines 33 is collected and transmitted to the connecting shaft 38, and further, the rotating force is transmitted from the connecting shaft 38 to the driving shaft of the generator 39 to drive the generator 39, Power generation is performed. For this reason, even if the wind power is small, it is possible to obtain a large amount of power generation.
On the other hand, during a storm, as shown by a broken line in FIG. 10, the windmill support portion 32 is tilted and the 20 windmills 33 are stored inside the main body portion 31. Thereby, the windmill 33 can be protected from the wind by the windbreak wall 34.

Since the wind turbine generator according to the second embodiment includes the solar cell panel 35 disposed in the main body 31, wind power generation by the windmill 33 and solar power generation by the solar cell panel 35 are performed as necessary. It becomes possible to charge a battery (not shown) selectively or simultaneously.
In addition, the windmill support part 32 can be formed from an aluminum profile or the like.
In the second embodiment, the wind turbine support portions 32 support a total of 20 wind turbines 33 arranged in four rows and five rows. However, the present invention is not limited to this and has different rotation axes. It is only necessary to support two or more windmills.

  The rotation transmission mechanism in the first and second embodiments described above includes a non-contact type drive transmission mechanism using magnetic force, but may instead include a drive transmission mechanism using a mechanical gear or the like. However, if a non-contact type drive transmission mechanism using magnetic force is used as in the first and second embodiments, energy loss due to friction can be avoided and high-efficiency power generation can be performed. In addition, if a non-contact type drive transmission mechanism using magnetic force is used, when an excessive rotational load is applied to each windmill during strong winds, the paired magnetic members are idled to generate torque. It has a limiter function and prevents damage.

  In the first and second embodiments, the windmills 6 to 9 and 33 are Darrieus type or gyromill type windmills having wing-shaped blades. However, the present invention is not limited to this, and a propeller type, Various wind turbines such as a multi-blade type, a paddle type, a Savonius type, and a cross flow type can be used.

It is a perspective view which shows the wind power generator which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the aluminum profile used for the support structure. FIG. 3 is a plan view schematically showing a rotation transmission mechanism in the first embodiment. FIG. 3 is a partial side cross-sectional view showing a main part of the wind turbine generator according to Embodiment 1. FIG. 3 is a partial plan cross-sectional view showing a main part of the wind turbine generator according to Embodiment 1. It is a fragmentary perspective view which shows the wind power generator which concerns on the modification of Embodiment 1. It is a front view which shows the wind power generator which concerns on Embodiment 2. FIG. FIG. 6 is a partial front view schematically showing a rotation transmission mechanism in a second embodiment. It is a side view which shows the wind power generator which concerns on Embodiment 2. FIG. FIG. 6 is a plan view showing a wind turbine generator according to Embodiment 2.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Support structure, 2, 3 Side frame, 4,5 Connection member, 6-9,33 Windmill, 10,39 Generator, 11-14, 36-38 Connection shaft, 15 Holder, 16, 17, 21, 40, 47 Ball bearing, 18, 41, 44 Rotating shaft, 19, 20, 25, 26, 42, 43, 45, 46, 48, 49 Magnetic member, 22 Bracket, 23 Drive shaft, 24 Coupling, 27 Arm , 28 Rotation restricting member, 31 body portion, 32 windmill support portion, 34 windbreak wall, 35 solar cell panel, 2a, 2b, 3a, 3b horizontal member, 2c, 2d, 3c, 3d vertical member, D groove.

Claims (5)

A plurality of windmills having different rotation axes;
One output shaft,
A rotation transmission mechanism for transmitting the rotational force of the rotation shafts of the plurality of wind turbines to the output shaft;
A wind turbine generator comprising: a generator coupled to the output shaft.   2. The wind turbine generator according to claim 1, wherein at least one of the plurality of wind turbines has a rotation shaft directed in a direction different from a rotation shaft of another wind turbine.   The wind power generator according to claim 1, wherein the rotation transmission mechanism includes a non-contact type drive transmission mechanism using magnetic force.   The wind turbine generator according to any one of claims 1 to 3, further comprising a support structure that supports the plurality of wind turbines, the output shaft, and the generator and is made of an aluminum profile. A body part surrounded by a windbreak wall and opened upward;
A windmill support portion that supports the plurality of windmills and is attached to the main body portion so as to be undulated;
The wind turbine support part is erected at the time of driving to position the plurality of wind turbines above the main body part, and the wind turbine support part is tilted and stored in the main body part during a storm. The wind power generator according to any one of 3.

Images