JP2007113562A - Wind power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind power generation device, capable of efficiently converting rotation of a Darrieus vane and a Savonius vane to electric energy, and improving the rotation startability of the Darrieus vane. <P>SOLUTION: The Darrieus vane is adapted to rotate a Darrieus vane output rotator in a first axial direction by wind of a predetermined direction, and the Savonius vane is adapted to rotate a Savonius vane output rotator in a second axial direction reverse to the first direction by the wind of the predetermined direction. A planetary transmission mechanism is disposed among the Darrieus vane output rotator, the Savonius vane output rotator, and a generator. An internal member, a carrier member, and a sun member of the planetary transmission mechanism are operationally operably to the Darrieus vane output rotator, the Savonius vane output rotator, and the generator, respectively. When the Darrieus vane starts to rotate, a starting torque to the second axial direction is given to the sun member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wind turbine generator that converts wind energy into electric energy, and more particularly, to a wind turbine generator that includes a Darrieus wing and a Savonius wing.

As a type of wind power generation apparatus that converts wind energy into electric energy, a composite wing type wind power generation apparatus including a Darrieus wing and a Savonius wing is used.
Such a composite wing-type wind turbine generator is excellent in high-speed rotation characteristics when the wind speed exceeds a predetermined value while utilizing the rotation by the Savonius blade excellent in low-speed rotation characteristics at the time of start-up or in a light wind state where the wind speed is a predetermined value or less. In addition, it is effective in that the rotation by the Darius blade can be used, but in a general composite blade type wind power generator, since the Savonius blade and the Darrieus blade are supported on the same rotation shaft, the rotation speed is high. In some cases, the Savonius wing becomes a rotational resistance to the Darrieus wing.

  In this regard, the Darrieus wing rotation shaft that supports the Darrieus wing is extrapolated to the Savonius wing rotation shaft that supports the Savonius wing, and the Darrieus wing rotation shaft is used as the Savonius wing rotation shaft in the low speed range. There has been proposed a configuration in which the engagement is performed and the engagement between the Darrieus blade rotation shaft and the Savonius blade rotation shaft is released in a high speed range (see Patent Document 1 below).

  The wind power generator described in Patent Document 1 generates power by the cooperation of the Savonius blade rotation shaft and the Darrieus blade rotation shaft at the time of start or light wind, and then increases the wind speed to increase the rotation speed of the Darius blade. Switch to only power generation. However, at this time, the Savonius blade rotating shaft is not involved in power generation even though it is rotated by the wind.

  Furthermore, the conventional wind turbine generator including the configuration described in the patent document is configured such that the Darrieus wing and the Savonius wing rotate in the same direction around the axis, and there is room for improvement in terms of power generation efficiency.

Further, in the conventional wind turbine generator, the Darrieus blade that does not have a self-starting property is configured to start using the rotational torque of the Savonius blade, but rotates in the same direction. Since the Darrieus wing and the Savonius wing arranged in this way are merely engaged, it is not sufficient.
JP-A-9-287546

  The present invention has been made in view of the prior art, and is a wind power generator including a Darrieus wing and a Savonius wing, which can efficiently convert the rotation of the Darrieus wing and the Savonius wing into electric energy. Another object is to provide a wind turbine generator that can improve the rotational startability of the Darrieus blade.

  In order to achieve the above object, the present invention provides a Darrie wing, a Savonius wing, an output rotator for a Darius wing that rotates around the axis along with the rotation of the Darius wing, and an axis along with the rotation of the Savonius wing. A wind power generator comprising an output rotating body for Savonius blades rotating around, a generator, and an output rotating body for Darrieus blades, and a planetary transmission mechanism that operatively connects the output rotating body for Savonius blades and the generator. The Darius wing is operatively connected to the Darrieus wing output rotator so as to rotate the Darrieus wing output rotator in a first direction around an axis by wind in a predetermined direction, and the Savonius wing is The Savonius blade output rotating body is operatively connected to the Savonius blade output rotating body so as to rotate the Savonius blade output rotating body in a second direction opposite to the first direction by a wind in a predetermined direction. The internal member, the carrier member and the sun member constituting the planetary transmission mechanism are operatively connected to the Darrieus wing output rotator, the Savonius wing output rotator and the generator, respectively. Provided is a wind turbine generator that is configured such that a starting torque is applied to the sun member around an axis in the second direction at the start of rotation.

  Preferably, the starting torque can be applied to the sun member when the number of rotations of the output rotating body for the Savonius blade in the second direction exceeds a predetermined threshold value.

Preferably, the application of the starting torque to the sun member is canceled when the number of rotations of the output rotating body for the Darrieus blade in the first direction exceeds a predetermined threshold value. it can.
Instead of or in addition to this, the application of the starting torque to the sun member can be configured to be released after a predetermined time has elapsed.

  In the various aspects, preferably, the starting torque is applied to the sun member by supplying power to the generator.

  In order to achieve the above object, the present invention provides a Darrie wing, a Savonius wing, an output rotator for a Darius wing that rotates about the axis along with the rotation of the Darius wing, and a rotation of the Savonius wing. A wind turbine comprising an output rotator for Savonius wings rotating around an axis, a generator, an output rotator for Darrieus wings, and a planetary transmission mechanism for operatively connecting the output rotator for Savonius wings and the generator. The Darrieus wing is operatively connected to the Darrieus wing output rotator so as to rotate the Darius wing output rotator in a first direction around an axis by wind in a predetermined direction, and the Savonius wing is The Savonius blade output rotating body is operatively connected to the Savonius blade output rotating body so as to rotate the Savonius blade output rotating body in a second direction opposite to the first direction by the wind in the predetermined direction. The planetary transmission mechanism includes a sun member operatively connected to the generator, an internal member operatively connected to the Darrieus wing output rotator, and a first Savonius wing output rotator. And the second carrier member, the first planetary member pivotally supported by the first carrier member in a state of being engaged with the sun member, and the state of being engaged with both the first planetary member and the internal member. A second planetary member pivotally supported by the second carrier member, wherein the Savonius wing starts rotating on the sun member, but the Darius wing is not rotated, and the Savonius wing rotates. Accordingly, a wind power generator is provided to which a Darrieus blade starting braking force of a size capable of preventing the sun member from rotating is operatively applied.

In one embodiment, an endless transmission mechanism that operatively connects the sun member and the generator may be provided.
Preferably, the endless belt transmission mechanism is adjustable in tension.
More preferably, the endless belt transmission mechanism is configured to transmit the rotation of the sun member to the generator at an increased speed.

In another embodiment, a brake mechanism that operatively applies a braking force to the sun member is provided, and the braking force for starting the Darrieus blade is obtained by the brake mechanism.
Preferably, the brake mechanism is configured to release the Darrieus blade starting braking force when the number of rotations of the Darrieus blade output rotor in the first direction exceeds a predetermined threshold.
Preferably, the brake mechanism is configured to apply the Darrieus blade starting braking force to the input shaft of the generator.

  In the various aspects, preferably, the output rotator for Darrieus wing and the output rotator for Savonius wing may be arranged concentrically.

  In the various aspects, preferably, a speed increasing transmission mechanism is provided between the sun member and the generator.

According to the wind turbine generator according to one aspect of the present invention, the Darius blade rotates the Darrieus blade output rotating body in the first direction around the axis by the wind in a predetermined direction, and the Savonius blade is driven by the wind in the predetermined direction. The output rotating body for the Savonius wing is rotated in the second direction opposite to the first direction around the axis, and the internal member, the carrier member, and the sun member constituting the planetary transmission mechanism are respectively used for the Darrieus wing. Since it is operatively connected to the output rotator, the output rotator for the Savonius blade, and the generator, the rotation can be input to the generator in a state where the rotation of the Darrieus blade and the rotation of the Savonius blade are added. . Therefore, the power generation efficiency can be improved by effectively using the rotation of the Darrieus blade and the rotation of the Savonius blade.
Furthermore, according to the present invention, at the time of starting rotation of the Darrieus wing, the sun member is configured to apply a starting torque around the axis in the second direction, so that self-rotation is possible regardless of the wind speed. It is possible to start rotation of the Darrieus blade that does not have startability. Therefore, it is possible to effectively generate power even in a wind speed state that could not be in a power generation state in a conventional wind power generator.

  When the rotational speed in the second direction of the output rotating body for the Savonius blades exceeds a predetermined threshold, if the start torque is applied to the sun member, the wind speed suitable for power generation is reached. It is possible to automatically start power generation, thereby further improving the power generation efficiency.

  Further, if the start torque is applied to the sun member when the rotational speed in the first direction of the output rotating body for the Darius blade exceeds a predetermined threshold, the Darius blade is The rotation can be reliably started, and the power generation action of the generator can be started with the release, so that the power generation efficiency can be further improved.

  Further, if the start torque is applied to the sun member by supplying power to the generator, the effect can be achieved without providing an additional member, and the cost can be reduced. Can do.

According to the wind turbine generator according to one aspect of the present invention, the Darius blade rotates the Darrieus blade output rotating body in the first direction around the axis by the wind in a predetermined direction, and the Savonius blade is driven by the wind in the predetermined direction. The output rotating body for the Savonius blade is rotated in the second direction opposite to the first direction around the axis, and the rotation of the output rotating body for the Darrieus blade and the output rotating body for the Savonius blade is transmitted to the generator. A planetary transmission mechanism includes a sun member operatively connected to the generator, an internal member operatively connected to the Darrieus wing output rotator, and first and first operatively connected to the Savonius wing output rotator. 2 engaged with both the carrier member, the first planetary member pivotally supported by the first carrier member in a state engaged with the sun member, and both the first planetary member and the internal member. Since the second planetary member pivotally supported by the second carrier member in the state is provided, the rotation can be input to the generator in a state where the rotation of the Darius wing and the rotation of the Savonius wing are added. . Therefore, the power generation efficiency can be improved by effectively using the rotation of the Darrieus blade and the rotation of the Savonius blade.
Further, according to the present invention, when the Savonius wing starts rotating on the sun member, but the Darrie wing is not rotated, the sun member rotates with the rotation of the Savonius wing. Since the braking force for starting the Darius blade that can be prevented is operatively added, the rotation of the Darius blade that does not have the self-rotating startability can be performed using the rotation of the Savonius blade. it can. Therefore, it is possible to effectively generate power even in a wind speed state that could not be in a power generation state in a conventional wind power generator.

If an endless belt-type transmission mechanism that operatively connects the sun member and the generator is provided, the Darrieus blade starting braking force is obtained by the internal resistance of the generator and the rotational resistance of the endless belt-type transmission mechanism. be able to. Therefore, the Darius wing can be self-started while eliminating the need for complicated and costly rotation sensors and the associated electric control system.
If the tension of the endless belt transmission mechanism can be adjusted, the Darrieus blade starting braking force can be easily adjusted.

If the brake mechanism for operatively applying the braking force to the sun member is provided, and the braking force for starting the Darius blade is obtained by the brake mechanism, the braking force for starting the Darius blade is applied at a desired timing. Can be made.
For example, when the rotational speed of the Darrieus wing output rotator in the first direction is equal to or less than a predetermined threshold, the Darius wing starting braking force is applied, and the Darrieus wing output rotator is If the Darrieus blade starting braking force is released when the rotational speed in one direction exceeds the threshold, the Darrieus blade starting braking force improves the power generation efficiency. It can be prevented from getting worse.
If the brake mechanism is configured to apply the Darrieus blade starting braking force to the input shaft of the generator, the brake mechanism can be downsized.

  Further, if the output rotating body for Darrieus blades and the output rotating body for Savonius blades are arranged on the same core, the entire wind power generator can be reduced in size.

  Further, if a speed increasing transmission mechanism is provided between the sun member and the generator, it is possible to further increase the rotational speed of the input to the generator. A rotary generator can be used. Accordingly, it is possible to use an automobile alternator that has a large amount of commercial distribution and is inexpensive as the generator, and the cost can be reduced.

Embodiment 1
Hereinafter, a preferred embodiment of a wind turbine generator according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a schematic front view of a wind turbine generator 1A according to the present embodiment.

As shown in FIG. 1, the wind power generator 1 </ b> A is a composite wing type wind power generator including a Darrieus blade 20 and a Savonius blade 40.
Specifically, the wind power generator 1 </ b> A includes a Darius wing 20, a Savonius wing 40, a Darrieus wing output rotating body 10 that rotates about the axis along with the rotation of the Darius wing 20, and the Savonius wing 40. The output rotator 30 for Savonius wings that rotates around the axis along with the rotation, the generator 200, the output rotator 10 for Darrieus wings, the planetary output rotator 30 for Savonius wings, and the generator 200 that operatively connects the generator 200. A transmission mechanism 50 is provided.

In the present embodiment, the Darrieus wing output rotator 10 and the Savonius wing output rotator 30 are arranged concentrically with each other.
Specifically, as shown in FIG. 1, the Savonius wing output rotating body 30 is a rotating shaft that is erected in a substantially vertical direction and has a total length substantially equal to the total length of the wind turbine generator 1A.
On the other hand, the Darrieus blade output rotator 10 has a hollow shape that is extrapolated relative to the lower part of the rotating shaft constituting the Savonius wing output rotor 30.

The Darius blade 20 is operatively connected to the Darrieus blade output rotator 10 so as to rotate the Darius wing output rotor 10 in the first direction around the axis by wind in a predetermined direction.
On the other hand, the Savonius blade 40 rotates the Savonius blade output rotating body 30 in the second direction opposite to the first direction around the axis by the wind in the predetermined direction. It is operatively connected to the body 30.

In the present embodiment, the Darrieus wing 20 and the Savonius wing 40 are supported by the Darrieus wing output rotator 10 and the Savonius wing output rotator 30 arranged on the same core so as not to be relatively rotatable. Has been.
Accordingly, the Darrieus wing 20 and the Savonius wing 40 are supported by the corresponding output rotators 10 and 30 in such a direction that the wings rotate in opposite directions by wind in a predetermined direction.

FIG. 2 is a schematic plan view of the Darius wing 20 and the Savonius wing 40.
As shown in FIG. 2, the Darrieus wing 20 is in a state in which the wing direction is set so that the Darrieus wing output rotating body 10 is rotated in the first direction R1 around the axis by wind in a predetermined direction X. It is supported by the Darrieus wing output rotor 10 so as not to be relatively rotatable.
As shown in FIG. 1, the Darius blade 20 is supported at its lower end portion so as not to rotate relative to the Darrieus blade output rotor 10, and its upper end portion is rotated through the bearing member for output rotation of the Savonius blade. The body 30 is supported so as to be relatively rotatable.

On the other hand, as shown in FIG. 2, the Savonius wing 40 moves the Savonius wing output rotor 30 around the axis in the second direction R2 opposite to the first direction R1 by the wind in the predetermined direction X. In a state where the direction of the blade is set so as to rotate, the Savonius blade output rotor 30 is supported so as not to be relatively rotatable.
As shown in FIG. 1, the wind turbine generator 1A according to the present embodiment includes first and second Savonius blades 40a and 40b arranged vertically as the Savonius blades 40.

  As shown in FIG. 1, the wind turbine generator 1A according to the present embodiment further supports the Darrieus wing output rotator 10 and the Savonius wing output rotator 30, and the planetary transmission mechanism 50 and the A support box 100 that houses the generator 200 is provided.

FIG. 3 shows a longitudinal front view of the support box 100.
As shown in FIGS. 1 and 3, the support box 100 includes a base plate 101 placed on an installation surface provided on a rooftop of a building, a tower, or a power transmission tower, and a peripheral wall portion extending upward from the periphery of the base plate 101. 102, an upper plate 103 provided at an upper end portion of the peripheral wall portion 102, and an intermediate plate 104 extending substantially horizontally between the upper plate 103 and the base plate 101.
In the present embodiment, as shown in FIGS. 1 to 3, the intermediate plate includes first to third intermediate plates 104a, 104b, and 104c in order from the top to the bottom.

As shown in FIG. 3, the output rotating body 10 for Darrieus wing has an upper end portion and a lower end portion that are supported by the upper plate 103 and the first intermediate plate 104a so as to be rotatable about an axis via bearing members, respectively. ing.
The Savonius blade rotating shaft 30 is supported by an inner peripheral surface of the Darrieus blade output rotating body 10 having a hollow shape through a plurality of bearing members spaced apart from each other so as to be rotatable about its axis.

  The planetary transmission mechanism 50 includes a sun member 51 and a planetary member 54 that engages with the sun member 51. The planetary member 54 revolves around the sun member 51 while rotating, and the planetary member 54 pivots. A supporting carrier member 52 and an internal member 53 engaged with the planetary member 54 are provided.

In the present embodiment, as shown in FIGS. 1 and 3, a planetary gear mechanism is used as the planetary transmission mechanism 50. The planetary gear mechanism includes a sun gear, a carrier, an internal gear, and a planetary gear as the sun member 51, the carrier member 52, the internal member 53, and the planetary member 54, respectively.
Instead of such a planetary gear mechanism, the planetary transmission mechanism 50 may be a traction type, that is, a friction transmission type.
The friction transmission type planetary transmission mechanism includes a sun wheel, a carrier, an internal ring, and a planetary wheel as the sun member 51, the carrier member 52, the internal member 53, and the planetary member 54, respectively. The solar wheel, the internal ring, and the planetary wheel are pressed against each other so as to frictionally transmit torque.

  As shown in FIG. 3, the internal member 53 is operatively connected to the Darrieus wing output rotor 10, the carrier member 52 is operatively connected to the Savonius wing output rotor 30, and the sun member 51. Is operatively connected to the generator 200.

Preferably, the sun member 51 is operatively connected to the generator 200 via the speed increasing transmission mechanism 60.
By providing such a speed increasing transmission mechanism 60, it is possible to increase the rotational input to the generator 200, and as a result, it is possible to use a higher speed rotating generator as the generator 200. It becomes possible.

In the present embodiment, as shown in FIG. 3, a second planetary gear mechanism is used as the speed increasing transmission mechanism 60.
Specifically, the second planetary gear mechanism includes a second internal gear 63, a second planetary gear 64 that engages with the second internal gear 63, and a second carrier that pivotally supports the second planetary gear 64. 62 and a second sun gear 61 that engages with the second internal gear 63 via the second planetary gear 64.
The second internal gear 64 is fixed to the second intermediate plate 104b so as not to rotate, the second carrier 62 is operatively connected to the sun member 51, and the second sun gear 61 is Operatively connected to machine 200.

  As a matter of course, a friction transmission type planetary transmission mechanism can be used as the speed increase transmission mechanism 60, and an endless belt type speed increase transmission mechanism 60B such as a belt and pulley type can also be used (FIG. 4). reference).

The generator 200 is operatively connected to the sun member 51 of the planetary transmission mechanism 50.
In the present embodiment, as described above, the speed increasing transmission mechanism 60 is interposed between the sun member 51 and the generator 200.
The generator 200 is supported by the third intermediate plate 104c.

  In the wind turbine generator 1A according to the present embodiment, the generator 200 rotates the Darrieus blade 20 in addition to the power generation action of converting the rotational power of the Darius blade 20 and the Savonius blade 40 into electric energy. The motor is configured to give a starting torque to the Darius blade 20 at the start.

FIG. 5 shows a cross-sectional plan view of the planetary transmission mechanism 50.
FIGS. 5A to 5C show a starting torque application state and a power generation state to the Darrieus blade 20 when the Savonius blade 40 starts rotating.

In the light wind state, the Savonius blade 40 having self-starting properties starts to rotate, whereby the Savonius blade output rotor 30 and the carrier member 52 operatively connected to the Savonius blade output rotor 30 are operated. Rotates in the second direction R2 (see FIG. 5A).
At this time, the Darius blade 20 that does not have a self-starting property cannot start rotating depending on the wind force.
The internal member 51 operatively connected to the Darrieus blade output rotating body 10 slightly rotates in the second direction R2 as the carrier member 52 rotates in the second direction, but the Darius blade 20 Stop by rotating resistance.
The sun member 51 operatively connected to the generator 200 is in a fixed state, and therefore the planetary member 54 rotates in the second direction R2 around the carrier member 52.

In this state, power is supplied to the generator 200, and the motor action by the generator 200 is performed.
Due to the motor action of the generator 200, the sun member 51 rotates in the second direction R2 that is the same as the rotation direction of the carrier member 52, and thereby the internal member 53 moves in the first direction R1 (FIG. 5). (See (b)). Due to the rotation of the internal gear member 53 in the first direction R1, the Darrieus blade 20 starts to rotate in the first direction R1.
At this time, the planetary member 54 rotates around the carrier member 52 in the first direction opposite to the time when the Savonius blade 40 starts rotating.

Once the Darius wing 20 starts to rotate, it continues to rotate in the first direction R1 even in a light wind due to its own moment of inertia (see FIG. 5 (c)).
When the Darrieus wing 20 starts to rotate, the power supply to the generator 200 is stopped, and the generator 200 is caused to generate power.

In the wind turbine generator 1A having such a configuration, the following effects can be obtained.
That is, in the present embodiment, the rotation direction (first direction R1) of the Darrieus blade output rotor 10 when the Darius blade 20 is rotated by the wind in a predetermined direction, and the Savonius by the wind in the predetermined direction. The rotation direction (second direction R2) of the Savonius blade output rotating body 30 when the blade 40 rotates is opposite to the rotation of the Darrieus blade output rotating body 10 in the first direction R1 and the Savonius blade output. The rotation of the output rotating body 30 in the second direction R <b> 2 is input to the internal member 53 and the carrier member 52, respectively, and a combined output is output from the sun member 51 toward the generator 200.
Therefore, a high rotational speed obtained by adding the rotational speed of the Darrieus blade 20 and the rotational speed of the Savonius blade 40 can be output to the generator 200, thereby improving the power generation efficiency.

In the present embodiment, as described above, in addition to the planetary transmission mechanism 50, the speed increase transmission mechanism 60 also increases the input rotational speed to the generator 200.
That is, in the wind power generator 1A, the planetary transmission mechanism 50 and the speed increasing transmission mechanism 60 are used to change the input rotational speed to the generator 200 at a high speed such as an automobile alternator that has a large amount of commercial distribution and is inexpensive. The speed can be increased to a high rotational speed (for example, about 1000 rpm) at which the type generator can stably generate power. Therefore, the cost of the generator 200 can be reduced.

Further, in the present embodiment, as described above, it is configured to give a starting torque to the Darius blade 20 at the start of power generation. Therefore, the Darius blade 20 having no self-starting property can be changed according to the wind speed. Regardless, the rotation can be started.
With such a configuration, it is possible to generate power even in a light wind state in which the conventional wind power generator cannot be shifted to the power generation operation state, thereby improving power generation efficiency.
Once the Darius wing 20 starts to rotate, it can continue to rotate even in a slight breeze due to its rotational moment of inertia.

In the present embodiment, as described above, the generator 200 is also used as a starter motor by supplying power to the generator 200, thereby eliminating the need for additional members. However, it is also possible to separately provide a dedicated starting motor 70 (see FIG. 7). In FIG. 7, the same members as those of the wind power generator shown in FIG.
The starting motor 70 can be operatively connected to the sun member 51 through, for example, an endless belt type transmission mechanism 60C.
As described above, in the configuration separately including the starting motor, for example, an inexpensive generator 200C having no motor action such as an alternator can be used as the generator.

Preferably, the wind power generator 1A may be provided with a battery as a power supply for supplying power to the generator 200 or a dedicated starter motor, and the electric energy generated by the generator 200 or the generator 200C may be provided. A portion may be configured to charge the battery.
By providing such a configuration, it is possible to substantially perform power generation work in a self-contained state.
Examples of the battery include a street light power source, a communication power source at an evacuation site, a simple power source for teaching materials, and an auxiliary power source used in an unmanned area.

In the present embodiment, the application of the starting torque to the Darrieus blade 20 is automatically performed when the rotational speed of the Savonius blade 40 exceeds a predetermined threshold.
Specifically, the wind power generator 1 </ b> A includes a Savonius blade rotation speed sensor 45 that detects the rotation speed of the Savonius blade 40.
In the present embodiment, as shown in FIG. 3, the Savonius blade rotation speed sensor 45 detects the rotation speed of a later-described brake disk 151 that is supported by the Savonius blade output rotor 40 so as not to be relatively rotatable. It is configured as follows.
Specifically, the Savonius blade rotation speed sensor 45 is configured to detect the rotation speed of the detected object 46 provided on the brake disk 151.

  In this way, by applying the starting torque to the Darrieus blade 20 based on the rotation speed of the Savonius blade 40, the power generation operation is automatically started when the wind speed is suitable for power generation. Can be made.

In the present embodiment, the application state of the starting torque to the Darius blade 20 is automatically canceled when the rotational speed of the Darius blade 20 exceeds a predetermined threshold.
Specifically, the wind power generator 1 </ b> A includes a Darius blade rotation speed sensor 25 that detects the rotational speed of the Darius blade 20.
In the present embodiment, the Darrieus blade rotational speed sensor 25 is configured to detect the rotational speed of the Darrieus blade output rotor 10 as shown in FIG.
Specifically, the Darius blade rotation speed sensor 25 is configured to detect the rotation speed of the detected body 26 provided on the outer peripheral surface of the output rotor 10 for the Darrieus blade.

  In this way, by applying the release of the starting torque to the Darius blade 20 based on the rotational speed of the Darius blade 20, the Darius blade 20 can continue to rotate by its own rotational inertia moment. When the state is reached, the generator 200 can be automatically switched from the motor operation state to the power generation operation state, thereby improving the power generation efficiency.

Instead of or in addition to such a configuration, it is also possible to automatically release the application of the starting torque to the Darrieus blade 20 after a predetermined time has elapsed.
Needless to say, it is also possible to perform a manual operation to apply and release the starting torque to the Darrieus blade 20.

Furthermore, 1 A of wind power generators which concern on this Embodiment are provided with the brake device 150 in addition to the said structure, as shown in FIG.1 and FIG.3.
The brake device 150 is provided to selectively set the wind power generator 1A to a power generation enabled state or a power generation stopped state when the rotation of the Savonius blade 40 and the Darrieus blade 20 is stopped.
Accordingly, the brake device 150 is configured to be able to apply a braking force to the Savonius blade 40 having a self-starting property.

Specifically, as shown in FIG. 3, the brake device 150 includes the brake disk 151 supported on the lower end portion of the Savonius wing output rotating body 30 so as not to be relatively rotatable and axially movable. And a pair of brake pads 155 arranged opposite to each other with the brake disc 151 interposed therebetween.
At least one of the pair of brake pads 155 is a movable pad that presses the brake disk 151 based on an external operation.
In the present embodiment, both of the pair of brake pads 155 are movable pads.

Further, the brake device 150 includes a brake actuator 180 and an operation mechanism 160 operated by the brake actuator 180.
In the present embodiment, the operating mechanism 160 is configured to operate the brake pad 155 by hydraulic pressure.

FIG. 6 shows a schematic diagram of the hydraulic operation mechanism 160.
As shown in FIG. 6, the hydraulic operation mechanism 160 includes a brake pad holding case 161 that holds the brake pad 155 so as to be movable in a direction orthogonal to the brake disk 151, and one end portion on the back side of the brake pad 155. A hydraulic line 162 fluidly connected to the side opposite to the surface facing the brake disc 151, a master cylinder 163 fluidly connected to the other end of the hydraulic line 162, and a hydraulic line connecting end of the master cylinder 163 A hydraulic piston 164 that is axially slidable and liquid-tightly inserted into an end opposite to the portion 163a, and that biases the hydraulic piston 164 toward the opposite side of the hydraulic line connecting end 163a. The hydraulic piston 164 against the urging force of the urging member 165 and the urging member 165, and the hydraulic line connection end 163a. As it can be pushed towards, and a pushing arm 166 configured to be pivot shaft 166a around swinging perpendicular to the moving direction of the piston 164.

The piston 181 of the electric actuator acting as the brake actuator 180 is configured to swing the push arm 166 around the pivot shaft 166a.
In the present embodiment, the push arm 166 has an engaging portion 166c for manual operation in addition to the engaging portion 166b for the piston 167 so that manual operation is possible ( The manual operation member 190 is engaged with the manual operation engagement portion 166c (see FIG. 6).

Embodiment 2
Hereinafter, other embodiments of the wind turbine generator according to the present invention will be described with reference to the accompanying drawings.
FIG. 8 shows a schematic front view of a wind turbine generator 1D according to the present embodiment.
In the figure, the same members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIG. 8, the wind turbine generator 1D according to the present embodiment includes the Darius wing 20, the Savonius wing 40, the Darrieus wing output rotator 10, and the Savonius wing output rotator 30. The generator 200C, the Darrieus wing output rotator 10, the Savonius wing output rotator 30, and the generator 200C are connected to the planetary transmission mechanism 50D.
Further, the wind power generator 1D includes the Darrieus wing output rotator 10, the Savonius wing output rotator 30, the planetary transmission mechanism 500D, and a support frame 100D that supports the generator 200C.

FIG. 9 shows a longitudinal front view of the support frame 100D.
As shown in FIGS. 8 and 9, the planetary transmission mechanism 50D is a double planetary transmission mechanism.
Specifically, the planetary transmission mechanism 50D includes the sun member 51 and a first planetary member 541 that engages with the sun member 51. The first planetary member 541 revolves around the sun member 51 while rotating. A first carrier member 521 that pivotally supports the first planetary member 541, the internal member 53, and a second planetary member 542 that engages both the first planetary member 541 and the internal member 53. A second planetary member 542 that revolves along the inner periphery of the internal member 53 while rotating, and a second carrier member 522 that pivotally supports the second planetary member 542 are provided.

As in the first embodiment, the internal member 53 and the sun member 51 are operatively connected to the Darrieus wing output rotor 10 and the generator 200C, respectively.
On the other hand, the Savonius blade output rotor 30 is operatively connected to both the first carrier member 521 and the second carrier member 522.
The operation of the planetary transmission mechanism 50D will be described later.
In the present embodiment, as shown in FIGS. 8 and 9, a planetary gear mechanism is used as the planetary transmission mechanism 50D, but it is of course possible to use a traction type, that is, a friction transmission type. is there.

As shown in FIGS. 8 and 9, the support frame 100D includes the base plate 101, and the first intermediate plate 104a and the third intermediate plate 104c supported by the base plate 101 via support columns. Yes.
8 and 9 is a cover attached to the base plate 101 and the intermediate plates 104a and 104c so as to cover the generator 200C and the planetary gear mechanism 50D.

Further, as shown in FIGS. 8 and 9, the wind turbine generator 1D includes a brake device 150D in addition to the above-described configuration.
As with the brake device 150 in the first embodiment, the brake device 150D selectively puts the wind power generator 1D into a power generation enabled state or a power generation stopped state when the Savonius blade 40 and the Darrieus blade 20 stop rotating. Provided for setting.
Therefore, the brake device 150D is also configured to apply a braking force to the Savonius blade 40 having self-starting properties.

  The brake device 100D according to the present embodiment includes a toggle mechanism, which will be described in detail later, and is configured so that once the brake is activated, the brake is not released unless an external force is applied.

  Specifically, the brake device 150D includes a fixing member 700, the brake disc 151, a pair of brake arms 710, a pair of crank arms 730, a pair of operation arms 740, and the corresponding operation arms 740 and A pair of toggle mechanisms 750 for connecting the crank arm 730, a manual actuator 760, and an electric actuator 770 are provided.

  The pair of brake arms 710 are arranged along a direction substantially orthogonal to the brake disk so as to face each other with the brake disk 151 interposed therebetween, and each base end is connected to the corresponding crank arm 730. And a brake pad is provided at a free end facing the brake disc 151.

Each of the pair of crank arms 730 is disposed substantially parallel to the brake disc 151 in a state where the corresponding brake arm 710 is supported.
Specifically, the crank arm 730 is pivotably connected to the fixing member 700 via a first pivot pin 781 whose base end is substantially parallel to the brake disk 151, and the base end is further The second pivot pin 782 that is substantially parallel to the first pivot pin 781 is pivotally connected to the distal end of the operation arm 740.
Each of the pair of crank arms 730 is braked by being swung to one side around the first pivot pin 781 (the side where the tip is close to the brake disk 151) by the corresponding operation arm 740. The brake release position is taken by taking the operating position and swinging around the first pivot pin 781 to the other side (the side where the tip is separated from the brake disk 151).

Each of the pair of toggle mechanisms 750 includes a link member 751 that connects the corresponding distal end portion of the operation arm 740 to the fixing member 700.
One end of the link member 751 is swingably connected to the fixing member 700 via a third pivot pin 783 substantially parallel to the first and second pivot pins 781 and 782, and The other end portion is swingably connected to the tip end portion of the corresponding operation arm 740 via a fourth pivot pin 784 substantially parallel to the third pivot pin 783.

When the corresponding crank arm 730 is positioned at the brake release position, the toggle mechanism 750 has the fourth pivot pin 784 centered with respect to the second pivot pin 782 and the third pivot pin 783. When the corresponding crank arm 730 is positioned at the brake operation position and is located closer to the base end side of the operation arm 740 than the imaginary line passing through the center position, the center of the fourth pivot pin 784 is centered. The position is located on the virtual line or on the distal end side of the operation arm 740 corresponding to the virtual line.
By providing the toggle mechanism 750, when the crank arm 730 is positioned at the brake operating position, the crank arm 730 can be held at the brake operating position unless an external force is applied to the operation lever 740.

The manual actuator 760 and the electric actuator 770 are connected to the base end portion of the operation arm 740, respectively.
That is, in the present embodiment, the operation arm 740 can be moved by either the manual actuator 760 or the electric actuator 770.

The manual actuator 760 has a long manual operation member 761.
The manual operation member 761 is movable in the longitudinal direction with one end connected to the base end of the operation arm 740.
When the manual operation member 761 is moved to one side in the longitudinal direction (upward in the illustrated embodiment), the operation arm 740 moves the crank arm 730 to the brake operating position in conjunction with this movement.
On the contrary, when the manual operation member 761 is moved to the other side in the longitudinal direction (downward in the illustrated form), the operation arm 740 moves the crank arm 730 to the brake release position in conjunction with this movement. It has become.

The electric actuator 770 includes an electric motor 771 and an operation member 272 that connects the electric motor 771 and the base end of the operation arm 740.
The operation member 772 can be moved in the longitudinal direction by the electric motor 771.
In such an electric actuator 770, the electric motor 771 is connected to one of the pair of operation arms 740, and the free end of the operation arm 772 is connected to the other of the pair of operation arms.

  In the electric actuator 770, when the operating member 772 is moved in the extending direction by the electric motor 771, the operating arm 740 moves the crank arm 730 to the brake operating position in conjunction with this, and When the operation member 772 is moved in the shortening direction by the electric motor 771, the operation arm 740 moves the crank arm 730 to the brake release position in conjunction with this movement.

Next, in the wind turbine generator 1D according to the present embodiment, a configuration that is employed for self-starting the Darrieus wing will be described.
In the wind power generator 1D according to the present embodiment, the Savonius wing 40 starts to rotate on the sun member 51, but the Darrieus wing 20 is not rotated and is accompanied by the rotation of the Savonius wing 40. Thus, a Darrieus blade starting braking force having a size capable of preventing the sun member 51 from rotating is added, so that the self-starting of the Savonius blade 20 is complicated and expensive. It is realized without the need for an attached rotation sensor and its associated electrical control system.

This point will be described in detail with reference to FIG.
FIG. 10 is a transverse plan view for explaining the operation of the planetary transmission mechanism 50D. FIG. 10 (a) shows a state in which a starting torque is applied to the Darrieus wing 20, and FIG. The power generation possible state by the generator 200C is shown.

In the light wind state, first, the Savonius blade 40 having self-starting properties starts to rotate in the second direction R2 (FIG. 10 (a)). At this time, as described above, the Darrieus blade starting braking force is applied to the sun member 51. Therefore, the sun member 51 does not rotate when only the Savonius blade 40 is rotating. It is like that.
That is, the first carrier member 521 and the second carrier member 522 that are operatively connected to the Savonius blade output rotor 30 revolve in the R2 direction as the Savonius blade 40 rotates. The sun member 51 remains held in a fixed state by the Darius blade starting braking force.
Accordingly, as the first and second carrier members 521 and 522 revolve in the R2 direction, the first planetary member 541 rotates in the R2 direction around the first carrier member 521, and the first planetary member 541 is rotated. The second planetary member 542 engaged with is rotated in the R1 direction around the second carrier member 522 (FIG. 10A).
The rotation of the second planetary member 542 in the R1 direction acts as a starting torque in the R1 direction on the internal member 53, and thereby the Darius blade 20 starts to rotate in the R1 direction.

Once the Darius blade 20 starts to rotate in the R1 direction, the Darius blade 20 continues to rotate in the first direction R1 even in a slight wind due to its inertial moment (see FIG. 10B).
Accordingly, the sun member 51 rotates at a rotational speed obtained by combining the rotational speed of the Savonius blade 40 in the R2 direction and the rotational speed of the Savonius blade 20 in the R1 direction, and according to the rotational speed according to the combined rotational speed. The generator 200C generates power.

Note that the Darius blade starting braking force is applied to the sun member 51. However, once the Darius blade 20 starts rotating, the moment of inertia of the Darius blade 20 exceeds the Darius blade starting braking force. It will be.
Accordingly, after the Darius wing 20 starts to rotate in the R1 direction, the sun member 51 is brought into the braking force for starting the Darius wing by the combined rotation of the rotation of the Savonius wing 40 and the rotation of the Darius wing 20. Rotate in the R1 direction.

In this way, by applying the Darius blade starting braking force to the sun member 51, the rotational force of the Savonius blade 40 based on self-starting can be used as the starting torque of the Darius blade 20.
Therefore, the Darius blade 20 having no self-starting property can be effectively rotated and started.

As shown in FIGS. 8 and 9, in the present embodiment, the generator 200C is operatively connected to the sun member 51 via an endless belt type transmission mechanism 60B.
In such a configuration, the Darrieus blade starting braking force is obtained by the internal resistance of the generator 200C and the rotational resistance of the endless transmission mechanism 60B.

Preferably, the tension of the endless belt in the endless belt transmission mechanism 60B can be adjusted.
In the present embodiment, as shown in FIG. 9, the generator 200 </ b> C is supported by a mounting stay 300 erected on the base plate 101 so that the relative position with respect to the sun member 51 can be adjusted. Thereby, the tension of the endless belt type transmission mechanism 60B can be changed.

Specifically, the mounting stay 300 includes a bottom wall 301 fixed to the base plate, a side wall 302 extending upward from the bottom wall 301, and an upper wall 303 extending horizontally from the upper end of the side wall 302. And have.
The generator 200 </ b> C is supported by the upper wall portion 303 through a support plate 350.
The support plate 350 includes a placement portion 351 placed on the upper wall portion 303 and a facing portion 352 extending downward from the placement portion 351 so as to face the side wall portion 302.
The side wall 302 is provided with a tension applying member 330 such as a bolt so that the axial position of the side wall 302 can be adjusted, and the free end of the tension applying member 330 is in contact with the facing portion 352.

With this configuration, by adjusting the axial position of the tension applying member 330 with respect to the side wall portion 302, the relative position of the generator 200C with respect to the sun member 51 is changed, whereby the endless belt transmission mechanism is changed. The tension of 60B changes.
Thus, by making the tension of the endless belt type transmission mechanism 60B variable, the Darrieus blade starting braking force can be adjusted. Therefore, the Darrieus blade starting braking force can be easily adjusted to a desired magnitude.

In the wind power generator 1D having such a configuration, as in the first embodiment, the power generation efficiency can be improved by effectively using the rotation of the Darius blade 20 and the rotation of the Savonius blade 40, and The startability of the Darius blade 20 can be improved.
Further, in the present embodiment, as described above, a starting torque is applied to the Darrieus blade 20 by utilizing the rotation of the Savonius blade 40, and therefore, the motor action as the generator 200C. It is not necessary to employ a generator equipped with the above, and it is not necessary to provide a dedicated drive motor. Therefore, the cost can be reduced while improving the startability of the Darius blade 20.

Furthermore, in the present embodiment, the endless belt transmission mechanism 60B is configured to increase the rotational speed of the sun member 51 and transmit it to the generator 200C.
Therefore, a high-speed rotary generator such as an inexpensive automobile alternator can be suitably used as the generator 200C.

Embodiment 3
Hereinafter, still another embodiment of the wind turbine generator according to the present invention will be described with reference to the accompanying drawings.
In FIG. 11, the schematic front view of the wind power generator 1E which concerns on this Embodiment is shown.
In the figure, the same members as those in the first or second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As described above, in the wind turbine generator 1D according to the second embodiment, the Darrieus blade starting braking force is obtained by the internal resistance of the generator 200C and the rotational resistance of the endless belt transmission mechanism 60B.
On the other hand, the wind turbine generator 1E according to the present embodiment includes a starting brake mechanism 400 that operatively applies a braking force to the sun member 51, and the starting brake mechanism 400 causes the Darius blade to start. The braking force is obtained.
In the present embodiment, since the Darrieus blade starting braking force is obtained by the starting brake mechanism 400, the wind power generator 1D is replaced by the planetary transmission mechanism 60B. A type transmission mechanism 60 is provided.

Preferably, the starting brake mechanism 400 may be configured to apply the Darrieus blade starting braking force to the input shaft 210 of the generator 200C.
By providing such a configuration, the Darius blade starting braking force can be added to the input shaft 210 that rotates at a high speed, whereby the starting brake mechanism 400 can be reduced in size.

More preferably, the starting brake mechanism 400 may be configured to selectively engage or release the application of the Darius blade starting braking force.
By providing such a configuration, the Darius blade starting braking force can be applied only when the Darius blade 20 is started, and the Darius blade starting braking force can be released during the power generation of the generator 200C.
Therefore, it is possible to improve the power generation efficiency of the power generator 200C while improving the startability of the Darius blade 20.

The engagement or release of the starting brake mechanism can be switched based on, for example, a detection signal from the Darrieus blade rotation speed sensor 25 (see FIG. 3).
That is, when the rotational speed of the Darrieus blade output rotating body 10 in the first direction R1 is equal to or less than a predetermined threshold, the starting brake mechanism 400 applies the Darius blade starting braking force, and When the rotational speed of the Darrieus blade output rotator 10 in the first direction R1 exceeds the threshold value, the starter brake mechanism 400 may be automatically controlled so as to release the Darrieus blade starter braking force.

FIG. 1 is a schematic front view of a wind turbine generator according to Embodiment 1 of the present invention. FIG. 2 is a schematic plan view of a Darrieus wing and a Savonius wing in the wind power generator shown in FIG. FIG. 3 is a longitudinal front view of a support box in the wind turbine generator shown in FIG. 1. FIG. 4 is a schematic front view of a modified example of the wind turbine generator according to the first embodiment. FIG. 5 is a cross-sectional plan view of the planetary transmission mechanism in the wind turbine generator shown in FIGS. 1 and 4. FIGS. 5 (a) to 5 (c) are respectively directed to the Darius wing when the Savonius wing starts rotating. The starting torque application state and the power generation state are shown. FIG. 6 is a schematic diagram of a hydraulic operation mechanism in the brake device provided in the wind turbine generator shown in FIGS. 1 and 4. FIG. 7 is a schematic front view of another modification of the wind turbine generator according to the first embodiment. FIG. 8 is a schematic front view of the wind turbine generator according to Embodiment 2 of the present invention. FIG. 9 is a longitudinal front view of the vicinity of the support frame in the wind turbine generator shown in FIG. FIG. 10 is a cross-sectional plan view of the planetary transmission mechanism in the wind turbine generator according to the second embodiment. FIGS. 10 (a) and 10 (b) show a state where starting torque is applied to the Darrieus wing, respectively. And the power generation possible state by the generator is shown. FIG. 11 is a schematic front view of a wind turbine generator according to Embodiment 3 of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A-1E Wind generator 10 Output rotator for Darius wing 20 Darius wing 30 Output rotator for Savonius wing 40 Savonius wing 50 Planetary transmission mechanism 51 Sun member 52 Carrier member 53 Internal member 60 Speed increase transmission mechanism 60B Endless belt type transmission Mechanism 200, 200C Generator 400 Darius blade starting brake mechanism X Wind direction R1 First direction R2 Second direction

Claims (13)

A Darius wing, a Savonius wing, an output rotator for a Darius wing that rotates about an axis in accordance with the rotation of the Darius wing, an output rotator for a Savonius wing that rotates about an axis in accordance with the rotation of the Savonius wing, A wind power generator comprising a generator, a planetary transmission mechanism that operatively connects the generator and the output rotor for the Darius blade and the output rotor for the Savonius blade, and the generator;
The Darius wing is operatively connected to the Darrieus wing output rotator so as to rotate the Darius wing output rotator in a first direction around an axis by wind in a predetermined direction;
The Savonius blade is operatively connected to the Savonius blade output rotor so as to rotate the Savonius blade output rotor in a second direction opposite to the first direction around the axis by the wind in the predetermined direction;
The internal member, the carrier member and the sun member constituting the planetary transmission mechanism are operatively connected to the Darrieus wing output rotator, the Savonius wing output rotator and the generator, respectively.
A wind turbine generator configured to apply a starting torque in the second direction around an axis to the sun member when the Darrieus blade starts rotating.   2. The wind turbine generator according to claim 1, wherein the starting torque is applied to the sun member when a rotational speed of the output rotating body for the Savonius blade in the second direction exceeds a predetermined threshold value.   The application of the starting torque to the sun member is canceled when the number of rotations of the output rotating body for the Darrieus wing in the first direction exceeds a predetermined threshold value. The wind power generator described.   The wind power generator according to any one of claims 1 to 3, wherein the application of the starting torque to the sun member is canceled after a predetermined time has elapsed.   The wind power generator according to any one of claims 1 to 4, wherein the starting torque is applied to the sun member by supplying power to the generator. A Darius wing, a Savonius wing, an output rotator for a Darius wing that rotates about an axis in accordance with the rotation of the Darius wing, an output rotator for a Savonius wing that rotates about an axis in accordance with the rotation of the Savonius wing, A wind power generator comprising a generator, a planetary transmission mechanism that operatively connects the generator and the output rotor for the Darius blade and the output rotor for the Savonius blade, and the generator;
The Darius wing is operatively connected to the Darrieus wing output rotator so as to rotate the Darius wing output rotator in a first direction around an axis by wind in a predetermined direction;
The Savonius blade is operatively connected to the Savonius blade output rotor so as to rotate the Savonius blade output rotor in a second direction opposite to the first direction around the axis by the wind in the predetermined direction;
The planetary transmission mechanism includes a sun member operatively connected to the generator, an internal member operatively connected to the Darrieus wing output rotator, and a first and second operatively connected to the Savonius wing output rotator. The second carrier member, the first planetary member pivotally supported by the first carrier member in a state of being engaged with the sun member, and the state of being engaged with both the first planetary member and the internal member. A second planetary member pivotally supported by the second carrier member;
The Sun member has a size that can prevent the Sun member from rotating with the rotation of the Savonius wing when the Savonius wing starts rotating but the Darrie wing is not rotated. A wind power generator characterized in that a starting braking force is operatively added.   The wind power generator according to claim 6, further comprising an endless belt type transmission mechanism that operatively connects the sun member and the generator.   The wind power generator according to claim 7, wherein tension of the endless belt type transmission mechanism is adjustable. A brake mechanism for operatively applying a braking force to the sun member;
The wind turbine generator according to claim 6, wherein the brake mechanism is configured to obtain the Darrieus blade starting braking force.   The brake mechanism applies the Darius wing starting braking force when the number of rotations of the Darrieus wing output rotator in the first direction is equal to or less than a predetermined threshold, and the Darius wing output rotator. 10. The wind turbine generator according to claim 9, wherein the Darrieus blade starting braking force is released when the rotational speed of the first in the first direction exceeds the threshold value. 11.   The wind turbine generator according to claim 9 or 10, wherein the brake mechanism is configured to apply the Darrieus blade starting braking force to the input shaft of the generator.   The wind power generator according to any one of claims 1 to 11, wherein the output rotating body for Darrieus blades and the output rotating body for Savonius blades are arranged concentrically.   The wind power generator according to any one of claims 1 to 12, wherein a speed increasing transmission mechanism is provided between the sun member and the generator.

Images