JP2011089492A - Wind turbine generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind turbine generator providing quality electric power according to wind power without dropping on-wind availability. <P>SOLUTION: This generator includes a retarder device 30 heating mineral oil when a wind turbine 2 is decelerated, a heat accumulation device 40 accumulating the mineral oil heated by the retarder device 30, a Starling engine 17 operated by heat of the mineral oil accumulated in the heat accumulation device 40, and an engine generator 18 driven by the Starling engine 17. The engine generator 18 is driven by the Starling engine 17 operated by heat provided by wind power, and the engine generator 18 is operated in a stable state thereby. Consequently, output voltage, output frequency and phase are equalized and quality electric power is provided without dropping on-wind availability by using wind power. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wind turbine generator that generates power using a windmill that rotates by receiving wind power.

2. Description of the Related Art Conventionally, there has been used a wind turbine generator that includes a wind turbine that rotates by receiving wind force, and that generates power by using wind power by connecting the rotation shaft of the wind turbine to an input shaft of a generator.
According to such a wind power generator, wind power that can be said to be inexhaustible in nature is adopted as a power source, so there is no possibility of exhaustion like fossil fuels. In addition, there is no need to burn fuel during power generation, so no carbon dioxide is generated.
For this reason, if the number of wind power generators is increased and the power generation amount is increased, the amount of fossil fuel burned by thermal power generation can be reduced, the amount of carbon dioxide generated can be reduced, and global warming can be suppressed. Can contribute.

Here, the wind in nature does not blow continuously at a constant wind speed, and the wind speed constantly fluctuates. For this reason, the conventional wind turbine generator selects a wind turbine and a generator so that a predetermined amount of power can be secured regardless of fluctuations in the wind speed. In other words, even when the wind speed is high, the wind speed is low. By designing so that the same constant power can be generated, an operation rate above a certain level is secured.
Specifically, a wind turbine of a conventional wind power generator has a blade whose pitch changes according to the wind speed, and when receiving wind that is faster than a predetermined wind speed, the pitch is changed so that the wind force is released. As a result, even if the wind speed changes, the windmill rotates at a constant rotational speed, and a predetermined power is stably generated by the generator. In addition, overheating of the generator due to this over rotation is prevented in advance.

In such conventional wind turbine generators, the operating rate is secured by limiting the power that can be generated, so if you try to increase the generated power according to the wind power, the operating rate suddenly decreases, and practical use In other words, there is a problem that power corresponding to wind power cannot be obtained without lowering the operating rate.
In addition, in the conventional wind power generator, when an AC induction machine is used as a generator, the output voltage and the output frequency also fluctuate due to fluctuations in the wind speed, and high-quality power that does not fluctuate the output voltage and output frequency is supplied There is also the problem that you can't.
By the way, in order to take out the energy according to a wind force, the wind-heat generation apparatus which generate | occur | produces frictional heat with a wind force and stored the generated heat | fever is known (for example, refer patent document 1).

More specifically, the wind power generator described above rotates a rotating blade provided rotatably in a heat storage device filled with water, thereby generating frictional heat between the rotating blade and water. Heat storage. Here, a plurality of fixed blades are fixed to the hub constituting the central portion of the rotating blades, and a plurality of swinging blades are provided so as to be able to project and retract in the radial direction from between these fixed blades.
According to such a wind heat generator, when the rotating blades are rotated by receiving wind force, heat energy can be generated by friction, and in addition, when the rotating blades rotate, centrifugal force activates the swinging blades. Since the amount of protrusion of the swing blade changes according to the rotational speed, the generation rate of thermal energy can be increased or decreased according to the strength of the wind force.

For this reason, since the swing blades do not protrude when the wind power is weak, the windmill can rotate even with weak wind power, and heat energy can be generated even though there is little, and if the generated heat energy is accumulated in the heat storage device, to some extent When this amount is accumulated in the heat storage device, this heat energy can be effectively utilized as a heat source for hot water supply, a heat source for air conditioning and heating, and a heat source for greenhouse cultivation.
On the other hand, when the wind power is strong, the swinging blades protrude and instantly generate a lot of heat energy, so the generated heat energy is used as it is for the hot water supply heat source, the air conditioner heat source, and the greenhouse cultivation. It can be effectively used as a heat source.
Therefore, it is not necessary to limit the amount of heat energy that can be acquired in order to ensure the operating rate, and an amount of heat energy corresponding to the wind power at that time can be acquired.

JP-A-5-10249

In the wind heat generator as described above, liquid-phase water is used as a heat medium, and the liquid-phase water can reach a temperature at which the generator can be driven efficiently even when heated. It is not possible to take out electrical energy from wind power and use it, and solving the above-mentioned problem, that is, it is not possible to acquire electric power according to wind power without reducing the operation rate Can not.
A swing blade whose projection amount changes according to the rotational speed is provided on the rotating shaft of the generator, and the rotational speed of the generator is adjusted by changing the resistance of the swing blade so that the rotational speed of the generator is within a predetermined range. However, if the rotating speed of the generator does not change, the amount of protrusion of the swinging blade will not change and the generator will rotate at a predetermined speed. It cannot be operated at a speed, and therefore the output voltage and output frequency fluctuate. Therefore, the problem that it is not possible to supply high-quality power that does not fluctuate the output voltage and output frequency cannot be solved. .

  Then, each invention described in each claim aims at providing a wind power generator capable of obtaining high-quality electric power according to wind power without reducing the operating rate.

Each invention described in each claim is made to achieve the above-mentioned object. The features of each invention will be described below with reference to the embodiments of the invention shown in the drawings.
In addition, a code | symbol shows the code | symbol used in embodiment of this invention, and does not limit the technical scope of this invention.
(Claim 1)
(Feature point)
The invention described in claim 1 is characterized by the following points.
That is, the invention described in claim 1 is a wind power generator (1, 1A, 1B) that generates power using a windmill (2) that rotates by receiving wind power, and the windmill (2) is generated. By converting the driving force into heat, the rotational speed of the wind turbine (2) is reduced, and the retarder device (30, 90) formed so that the heat medium can be heated by the converted heat, and the retarder device ( (30, 90), a heat storage device (40) that accumulates heat by accumulating the heat medium heated by the heat medium, a motor (17) that drives the heat stored in the heat storage device (40) as a motive power, and this motor ( And an engine generator (18) that generates power by being driven by the driving force of (17).

Here, as the windmill, either a propeller type or the like in which the rotation axis is horizontally arranged, or a Darrie type or gyromill type or the like in which the rotation axis is arranged vertically can be adopted.
In addition, as a retarder device, a rotor that rotates with respect to the stator is provided close to the stator, and oil is filled between the stator and the oil is stirred by the rotation of the rotor. A permanent magnet is embedded in a fluid retarder device that decelerates the rotor, or a stator fixed so as to be stationary with respect to the rotating rotor, and an eddy current is generated on the rotor surface by the rotation of the rotor. A permanent magnet type retarder device that decelerates the rotor by utilizing the reaction force of the induced electromotive force due to the generation of current can be employed.

(Claim 2)
(Feature point)
The invention described in claim 2 is the invention described in claim 1, and has the following characteristic points.
That is, the invention according to claim 2 is a hydraulic pump that pumps hydraulic oil between the wind turbine (2) and the retarder device (30, 90) by receiving a driving force generated by the wind turbine (2). 11) and a hydraulic motor (12) that rotates by receiving hydraulic oil fed from the hydraulic pump (11) and rotates the retarder device (30, 90), and the wind turbine (2) The driving force generated is transmitted to the retarder device (30, 90) via hydraulic oil.

(Claim 3)
(Feature point)
The invention described in claim 3 is the invention described in claim 1 or 2 described above, and has the following characteristics.
In other words, the invention according to claim 3 detects the rotational speed of the windmill (2) by detecting the rotational speed of the windmill (16) and the windmill generator (16) that generates power by wind power with the input shaft engaged with the rotational axis of the windmill (2). And a control device (50) for adjusting the deceleration force of the retarder device (30, 90) so that the rotational speed of the windmill (2) becomes a predetermined speed.

(Claim 4)
(Feature point)
The invention described in claim 4 is the invention described in claim 3 described above, and has the following characteristics.
That is, in the invention according to claim 4, when the power generation amount of the wind turbine generator (16) is insufficient as the control device (50) with respect to the power demand, the power generation amount of the wind turbine generator (16) is reduced. In order to compensate, the engine (17) is driven by the heat stored in the heat storage device (40), and the engine generator (18) is caused to generate power by the driving force of the motor (17). It is characterized by.

Here, if a plurality of prime movers and a plurality of engine generators driven by the prime movers are provided and the number control for operating the number corresponding to the power demand is performed, the power demand can be widely met.
(Claim 5)
(Feature point)
The invention described in claim 5 is the invention described in any one of claims 1 to 4 described above, and has the following characteristic points.
That is, in the invention according to claim 5, an auxiliary heat source (20) for heating the heat medium stored in the heat storage device (40) is provided separately from the retarder device (30, 90), and the heat storage device ( When the temperature of the heat medium stored in 40) falls below a predetermined value, the heat medium can be heated by the heat of the auxiliary heat source (20).

(Claim 6)
(Feature point)
The invention described in claim 6 is the invention described in claim 5, which is provided with the following characteristic points.
That is, the invention according to claim 6 is a solar heat collector that heats a heat medium using solar radiation heat, a geothermal sampler that heats a heat medium using geothermal heat, and burns fuel in a combustion furnace. At least one of the combustion furnace apparatuses that heat the heat medium with the heat generated at the time is employed as the auxiliary heat source (20).

(Claim 7)
(Feature point)
The invention described in claim 7 is characterized by the following points.
In other words, the invention described in claim 7 is a wind power generator (1, 1A, 1B) that generates power using a windmill (2) that rotates by receiving wind power, and is driven by the windmill (2). By converting the force into heat, the rotational speed of the wind turbine (2) is reduced, and the retarder device (30, 90) formed so that the heat medium can be heated by the converted heat, and the retarder device (30 , 90), a heat storage device (40) that accumulates heat by storing the heat medium heated, and a thermoelectric conversion device (19) that converts heat accumulated in the heat storage device (40) into electric power by a thermoelectric element, It is characterized by having.

(Effect of Claim 1)
The present invention configured as described above has the following effects.
That is, according to the first aspect of the invention, the retarder device that converts the driving force generated by the windmill into heat to heat the heat medium, and the heat storage device that stores heat by accumulating the heat medium heated by the retarder device, In addition, since a prime mover that operates with the heat of the heat medium stored in the heat storage device and an engine generator that is driven by the prime mover are provided, the heat medium can be heated when the retarder device decelerates the wind turbine, The heat applied to the heat medium is stored in the heat storage device, and the engine is operated by using the accumulated heat as a driving force to drive the engine generator, thereby generating power. If the mineral oil used as the engine oil for automobiles is adopted as the heat medium, the heat medium can be heated to a temperature at which the generator can be driven sufficiently, thereby extracting electric energy from the wind power. It can be used effectively.

Moreover, since the retarder device can continuously adjust the deceleration force of the windmill due to its mechanism, it can obtain electric power according to the wind force.
When the wind power is weak, if the retarding power of the retarder device is weakened, the wind turbine can be rotated to obtain thermal energy even with weak wind power, and the obtained thermal energy can be stored in the heat storage device. it can.
On the other hand, when the wind power is strong, the retarding power of the retarder can be increased and the amount of heat energy obtained from the wind power per unit time can be increased. The generated thermal energy is also stored in the heat storage device.

When sufficient heat energy is accumulated in the heat storage device in this way, the engine can be driven by operating the prime mover with this heat energy, so that power can always be supplied in response to demand and the operating rate of the wind power generation device Can be made excellent.
At this time, if a motor whose output can be adjusted so that the rotation speed is constant is adopted as the prime mover, the operation of the prime mover can be controlled so that the output voltage and output frequency of the generator are constant. As a result, the power output from the generator is of good quality with a constant output voltage and output frequency.
Therefore, high-quality electric power can be obtained by using wind power without lowering the operation rate, thereby achieving the object.

(Effect of claim 2)
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is obtained.
That is, according to the second aspect of the present invention, the hydraulic pump and the hydraulic motor are provided between the windmill and the retarder device so that the driving force generated by the windmill is transmitted to the retarder device via the hydraulic oil. Therefore, the windmill and the retarder device can be arranged apart from each other, and the retarder device and the heat storage device can be arranged close to each other, so that when the heat energy is transferred by the transfer of the heat medium, the heat medium , The energy loss accompanying the conveyance of the heat medium can be remarkably reduced, and the power generation efficiency of the wind turbine generator can be improved.

(Effect of claim 3)
According to invention of Claim 3, in addition to the effect of the invention of Claim 1 or 2 mentioned above, there exist the following effects.
That is, according to the third aspect of the present invention, the wind turbine generator driven by the wind turbine and the control device that detects the rotational speed of the wind turbine and adjusts the deceleration force of the retarder device are provided, and the rotational speed of the wind turbine generator is provided. Since the wind turbine generator rotates at a constant rotational speed even when the wind speed changes, the wind turbine generator can stably generate predetermined power.
For this reason, even if the wind turbine generator is directly driven by wind power, high-quality electric power can be obtained, and furthermore, the wind turbine generator is directly driven by wind power to obtain electric power. Since there is no need for conversion, there is no energy loss that occurs during energy conversion. From this point as well, the power generation efficiency of the wind turbine generator can be improved.

In addition, the heat generated when the retarder device decelerates is not discarded, but is collected and stored in the heat storage device through the heat medium and used to drive the prime mover. Even if a part of the wind turbine generator cannot be converted into electric power, the portion is converted into electric power by the engine generator, so that wind energy can be used without waste.
(Effect of claim 4)
According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the following effect is obtained.

  That is, according to the fourth aspect of the present invention, when the power generation amount of the wind turbine generator is insufficient with respect to the power demand, in order to supplement the power generation amount of the wind turbine generator, the prime mover is driven by the heat accumulated in the heat storage device. , And the control device that causes the engine generator to generate power with the driving force of the prime mover, the wind energy obtained by the change in wind speed fluctuates, even if the fluctuation in wind energy does not match the power demand, When wind energy is surplus, the surplus wind energy is converted into heat energy and accumulated in the heat storage device.When the wind energy is insufficient, the prime mover is driven by the heat energy accumulated in the heat storage device, It is possible to compensate for the shortage of energy, and thereby it is possible to supply power corresponding to the power demand.

(Effect of Claim 5)
According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the following effect is obtained.
That is, according to the fifth aspect of the invention, the auxiliary heat source for heating the heat medium stored in the heat storage device is provided separately from the retarder device, and the temperature of the heat medium stored in the heat storage device falls below a predetermined value. In this case, since the heat medium can be heated by the heat of the auxiliary heat source, even if the windless climate lasts for a long time, it becomes possible to always store a predetermined amount of heat energy in the heat storage device. Thus, stable power supply can be performed without interrupting power supply with respect to demand.

(Effect of claim 6)
According to invention of Claim 6, in addition to the effect of invention of Claim 5, there exist the following effects.
That is, according to the invention described in claim 6, any one of the solar heat collecting device that heats the heat medium using solar radiation and the geothermal heat collecting device that heats the heat medium using geothermal heat is used as the auxiliary heat source. In the case of adopting as, since it is not necessary to burn the fuel at the time of heating, no carbon dioxide is generated, thereby contributing to the suppression of global warming.
On the other hand, when it is adopted as a combustion furnace device that heats the heat medium with the heat generated when burning the fuel in the combustion furnace, biodiesel fuel made from plants that grow by photosynthesis or biodiesel fuel from raw materials If the residue generated after burning is burned as fuel, these fuels are derived from carbon dioxide absorbed from the atmosphere, so even if burned as a whole, the amount of carbon dioxide in the atmosphere is not increased Therefore, it is possible to contribute to the suppression of global warming.

(Effect of Claim 7)
According to invention of Claim 7, there exists an effect as described below.
That is, according to the seventh aspect of the invention, the retarder device that converts the driving force generated by the windmill into heat and heats the heat medium, and the heat storage device that stores heat by accumulating the heat medium heated by the retarder device, Since the thermoelectric conversion device that converts the heat accumulated in the heat storage device into electric power with a thermoelectric element is provided, the heat medium can be heated when the retarder device decelerates the windmill, and in addition to the heat medium Since the generated heat is stored in the heat storage device and the accumulated heat is converted into electric power by the thermoelectric conversion device, electric power can be obtained by decelerating the windmill with the retarder device. If the mineral oil used as the engine oil for automobiles is adopted as the heat medium, the heat medium can be heated to a temperature at which the thermoelectric conversion device can be sufficiently operated. Energy can be extracted and used effectively.

Moreover, since the retarder device can continuously adjust the deceleration force of the windmill due to its mechanism, it can obtain electric power according to the wind force.
When the wind power is weak, if the retarding power of the retarder device is weakened, the wind turbine can be rotated to obtain thermal energy even with weak wind power, and the obtained thermal energy can be stored in the heat storage device. it can.
On the other hand, when the wind power is strong, the retarding power of the retarder can be increased and the amount of heat energy obtained from the wind power per unit time can be increased. The generated thermal energy is also stored in the heat storage device.

When sufficient heat energy is accumulated in the heat storage device in this way, the engine can be driven by operating the prime mover with this heat energy, so that power can always be supplied in response to demand and the operating rate of the wind power generation device Can be made excellent.
At this time, if the DC power output from the thermoelectric converter is converted into DC power by the inverter device, power with a constant output voltage and output frequency can be obtained, and the power output from the wind turbine generator is The voltage and output frequency are constant and the quality is good.
Therefore, high-quality electric power can be obtained by using wind power without lowering the operation rate, thereby achieving the object.

It is a mimetic diagram showing a schematic structure of a 1st embodiment of the present invention. It is a schematic instrumentation figure which shows the control system of the said 1st Embodiment. It is a schematic diagram which shows schematic structure of 2nd Embodiment of this invention. It is a schematic diagram which shows schematic structure of 3rd Embodiment of this invention. It is sectional drawing which shows the principal part of the retarder apparatus which concerns on the said 3rd Embodiment. It is a schematic diagram for demonstrating operation | movement of the retarder apparatus which concerns on the said 3rd Embodiment. It is a schematic diagram which shows schematic structure of 4th Embodiment of this invention.

DESCRIPTION OF EMBODIMENTS Embodiments that are embodiments for carrying out the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 shows a wind turbine generator 1 according to the first embodiment.
In FIG. 1, a wind power generator 1 generates power using wind power received by a windmill 2. As shown in FIG. 1, the wind power generator 1 includes a tower portion 3 that extends upward from the ground, a nacelle portion 4 that rotatably supports the windmill 2 at the top of the tower portion 3, and a device necessary for power generation. There is a machine shed 5 for storing the kind.

The windmill 2 has a plurality of blades 2A extending radially from the center, and rotates by receiving wind power with these blades 5A.
The tower portion 3 is a building formed in a tall tower shape in order to place the windmill 2 at a high position where a wind force stronger than that near the ground is obtained.
The tower section 3 is provided with a tower frame (not shown) in which steel frame assemblies and the like are combined in a tower shape, and a cylindrical cover 3A in which the tower frame is housed.
Among these, the top of the tower-like frame is provided with a pivot support shaft (not shown) that supports the nacelle 4 so as to be pivotable and extends substantially horizontally.

The nacelle part 4 is formed in a bowl-shaped frame (not shown) that combines steel frame assemblies and the like, and a container shape that covers the bowl-shaped frame, and has a predetermined weather resistance and rigidity, For example, a protective cover 4A made of fiber reinforced plastic is provided.
Among these, the bowl-shaped frame is rotatably supported by the above-described rotation support shaft provided at the top of the tower-shaped frame of the tower section 3, and supports the windmill 2 rotatably. In addition, a rotation support shaft 4B extending substantially horizontally is provided.
One end of the rotation support shaft 4B is coupled to the center of the windmill 2, and serves as a rotation shaft of the windmill 2 that transmits torque, which is a driving force generated by the windmill 2 receiving wind power, to the other end side.

In such a nacelle section 4, a wind pump 2 is directed upwind based on a hydraulic pump 11 driven by wind power, an anemometer (not shown) for measuring the wind direction, and the wind direction detected by the anemometer. A yaw adjustment mechanism (not shown) is provided.
Here, the input shaft of the hydraulic pump 11 is coupled to the other end of the rotation support shaft 4B, and the torque generated by the windmill 2 is transmitted through the rotation support shaft 4B, so that it is driven by wind power. It has become.
The hydraulic pump 11 drives a hydraulic motor 12 provided inside the machine shed 5. That is, the hydraulic pump 11 and the hydraulic motor 12 are connected to each other by a hydraulic forward pipe 13 and a hydraulic return pipe 14 that extend from the tower section 3 provided at the top of the tower section 3 to the inside of the machine shed 5.

Each of the hydraulic forward pipe 13 and the hydraulic return pipe 14 is divided into a tower section 3 side and a nacelle section 4 side. Each of the hydraulic outward pipe 13 and the hydraulic return pipe 14 is divided into a swivel joint (not shown) so that the portion on the nacelle portion 4 side can be rotated with respect to the portion on the tower portion 3 side. Are connected to each other.
The windmill 2 supported by such a nacelle portion 4 is adjusted in direction by an anemometer and a yaw adjustment mechanism, and is always formed so as to face the windward and reliably receive wind force.
The wind energy received by the windmill 2 is converted into hydraulic energy by the hydraulic pump 11 and transmitted to the hydraulic motor 12 in the machine shed 5 through the hydraulic forward pipe 13. The hydraulic oil pumped from the hydraulic pump 11 to the hydraulic motor 12 rotates the hydraulic motor 12 and then returns to the hydraulic pump 11 through the hydraulic return pipe 14.

The machine shed 5 is a prefabricated small building that can be easily constructed on site, or a container house that has been previously formed in a box shape at a factory and then transported to the site. A machine room is provided for installing the machine.
In such a machine shed 5, the hydraulic motor 12 driven by hydraulic oil pumped by the hydraulic pump 11, an accumulator 15 that absorbs fluctuations in the hydraulic pressure in the hydraulic forward pipe 13, and the hydraulic motor 12 are driven. The wind turbine generator 16, the retarder device 30 interposed between the hydraulic motor 12 and the wind turbine generator 16, the heat storage device 40 for storing thermal energy converted from wind energy, and the heat storage device 40 In order to control the operation of the Stirling engine 17, which is a prime mover driven by thermal energy, the engine generator 18 driven by the Stirling engine 17, the retarder device 30, and the like, a control device 50 described later is provided. .

The accumulator 15 uses pressure compression / expansion to absorb pressure pulsation generated inside the pipe. That is, the accumulator 15 is divided into two chambers with a flexible diaphragm inside, one chamber is a gas chamber filled with gas, and the other chamber is a pressure receiving chamber connected to the hydraulic forward pipe 13. Yes.
The accumulator 15 compresses / expands the gas in the gas chamber when the pulsation of the discharge pressure of the hydraulic pump 11 due to the fluctuation of the wind speed and the pulsation of the hydraulic pressure due to the fluctuation of the load of the hydraulic motor 12 are introduced into the pressure receiving chamber. Thereby, the above-mentioned pulsation is absorbed.
Such an accumulator 15 suppresses the pulsation of the hydraulic pressure inside the hydraulic forward pipe 13, and by extension, the hydraulic return pipe 14, so that the hydraulic pressure is stabilized.

The wind turbine generator 16 is a generator that generates power with wind power by connecting the rotating shaft of the wind turbine 2 to the input shaft via the hydraulic pump 11 or the like.
That is, the windmill 2 rotates when receiving wind force, and drives the hydraulic pump 11 with the torque.
The hydraulic motor 12 is operated by hydraulic oil that is pumped from the hydraulic pump 11. The wind turbine generator 16 is coupled to the tip of the output shaft 12A of the hydraulic motor 12 and is driven by the hydraulic motor 12.
Thereby, the torque of the windmill 2, in other words, the wind energy is transmitted to the wind turbine generator 16, and the wind turbine generator 16 generates power by this wind energy.

Moreover, the torque which is the driving force which the windmill 2 generate | occur | produces is transmitted also to the retarder apparatus 30 via hydraulic fluid.
The retarder device 30 is a braking device that engages with the output shaft 12A of the hydraulic motor 12 and reduces the rotational speed of the windmill 2 by reducing the rotational speed of the output shaft 12A.
This retarder device 30 reduces the rotational speed of the windmill 2 by converting the torque (driving force) generated by the windmill 2 receiving wind power into heat, and the converted heat is a mineral oil that is a heat medium. It is formed to heat.
With such a retarder device 30, the rotational speed of the wind turbine generator 16 is controlled so as to rotate at a preset rotational speed. The rotational speed control of the retarder device 30 will be described in detail later.

The heat storage device 40 is a tank having a predetermined capacity for storing the mineral oil heated by the retarder device 30, and stores heat by storing the heated mineral oil.
Here, the heat storage device 40 has a hollow structure in which the outer shell is formed of stainless steel or the like, and the hollow portion is evacuated to form a container having excellent heat insulation performance.
The heat storage device 40 is connected to the retarder device 30 by a mineral oil forward pipe 31 and a mineral oil return pipe 32, and an oil pump 33 described later is provided in the middle of the mineral oil return pipe 32.
Thereby, the mineral oil circulates between the retarder device 30 and the heat storage device 40. More specifically, the mineral oil heated by the retarder device 30 is sent to the heat storage device 40 through the mineral oil forward pipe 31, while the mineral oil radiated by the heat storage device 40 passes through the mineral oil return pipe 32 and the retarder device 30. To be sent back to.

Here, the temperature of the mineral oil stored in the heat storage device 40 is controlled so as not to depart from the range of 200 to 350 ° C. The temperature control of the mineral oil stored in the heat storage device 40 will be described in detail later.
The Stirling engine 17 is an external combustion engine that uses the mineral oil in the heat storage device 40 as a heat source. In other words, the Stirling engine 17 operates using the heat stored in the heat storage device 40 as a driving force.
Here, in the Stirling engine 17, the heater 17A is inserted into the heat storage device 40, and the heater is heated by the heat stored in the heat storage device 40.
The Stirling engine 17 is arranged at a position where a cooler (not shown) is in contact with the air in the machine shed 5 so that the cooler is cooled by the air in the machine shed 5.

The engine generator 18 is coupled to the tip of the output shaft 17B of the Stirling engine 17 and is driven by the Stirling engine 17.
Here, since the engine generator 18 is driven by the Stirling engine 17, in other words, the engine generator 18 operates using the thermal energy stored in the heat storage device 40 and, in turn, the wind energy taken in by the windmill 2 as a driving force. .
Further, the rotation speed of the engine generator 18 is controlled so as to rotate at a preset rotation speed by adjusting the excitation current. The rotational speed control of the engine generator 18 will be described in detail later.

The control device 50 is provided to perform the rotational speed control of the retarder device 30, the temperature control of the mineral oil sent to the heat storage device 40, and the rotational speed control of the engine generator 18.
That is, as shown in FIG. 2, the control device 50 includes a retarder control unit 60 that controls the rotational speed of the retarder device 30, a temperature control unit 70 that controls the temperature of mineral oil to be sent to the heat storage device 40, and an engine generator And a generator control unit 80 for controlling 18 rotation speeds.
Here, the retarder device 30 is a fluid type retarder device that decelerates with frictional resistance of oil stirred inside.
That is, the retarder device 30 includes, as shown in FIG. 2, a case 34 formed in a box shape, a stator 35 that is formed so as to be immovable inside the case 34, and has a flow path for circulating mineral oil. A rotor 36 that is formed so as to be rotatable with respect to the case 34 and that is disposed in the vicinity of the stator 35 is provided.

In such a retarder device 30, mineral oil is put into a gap 34A formed between the stator 35 and the rotor 36, and the rotor 36 is coupled to the output shaft 12A of the hydraulic motor 12, and as the output shaft 12A rotates. When the rotor 36 rotates, the mineral oil flows through the flow path of the stator 35, and the rotor 36 is decelerated by the resistance generated by the flow of the mineral oil.
Here, when the bulk of the mineral oil entering the gap 34A increases, the retarder device 30 increases the distribution resistance of the mineral oil and increases the deceleration force of the rotor 36, and if the bulk of the mineral oil decreases, the distribution resistance of the mineral oil decreases. It is formed so as to decrease and the deceleration force of the rotor 36 becomes weaker.
The retarder control unit 60 operates the deceleration force of the rotor 36 by adjusting the volume of mineral oil entering the gap 34A of the retarder device 30, thereby controlling the rotational speed of the retarder device 30 to be constant, and thus The frequency and phase of the output voltage of the wind turbine generator 16 are adjusted appropriately.

That is, as shown in FIG. 2, the retarder device 30 is provided with a mineral oil tank 37 for storing mineral oil to be put into the gap 34A, and a circulation pump 38 for always circulating mineral oil between the gap 34A and the mineral oil tank 37. ing.
Among these, the mineral oil tank 37 has a sealed structure in which mineral oil and air are stored. When the internal air pressure is increased, the mineral oil tank 37 is sent to the gap 34A to increase the bulk of the mineral oil in the gap 34A. On the other hand, when the internal air pressure is reduced, the mineral oil returns from the gap 34A. The bulk of the mineral oil in the gap 34A is reduced.
Then, the retarder control unit 60 has a rotational speed regulator 61 that adjusts the rotational speed of the input shaft of the wind turbine generator 16, in other words, the rotational speed of the retarder device 30, and the demand supplied by the wind turbine generator 16. A voltage detection coil 62 that detects a voltage waveform between the lines of the side electric wires, an air source device 63 that supplies compressed air to be injected into the inside of the mineral oil tank 37, and air is injected into and discharged from the mineral oil tank 37. A three-way solenoid valve 64 is provided.

Here, the air source device 63 includes a compressor 64A that takes in and compresses ambient air, an air tank 64B that stores compressed air compressed by the compressor 64A, and an air cooler and an air filter (not shown). Is.
The three-way solenoid valve 64 includes a solenoid (not shown). When the solenoid is not energized, that is, a so-called normal state, the inside of the mineral oil tank 37 is opened to the atmosphere, and the internal air of the mineral oil tank 37 is discharged to the outside. It is like that. Thereby, the bulk of the mineral oil in the gap 34A formed in the retarder device 30 is reduced.
In contrast, when the three-way solenoid valve 64 enters an energized state in which a solenoid (not shown) is energized, that is, an operating state, the air tank 64B of the air source device 63 is connected to the mineral oil tank 37 and compressed air is injected into the air tank 64B. It is supposed to be. Thereby, the bulk of the mineral oil in the gap 34A formed in the retarder device 30 is increased.

The rotation speed adjuster 61 receives an output signal of a rotary encoder (not shown) provided on the input shaft of the wind turbine generator 16, and based on this output signal, calculates the rotation speed and phase of the input shaft of the wind turbine generator 16. It can be detected.
The rotation speed adjuster 61 detects the frequency and phase of the voltage applied to the demand side electric wire based on the output signal of the voltage detection coil 62.
The rotation speed controller 61 is a solenoid (not shown) of the three-way solenoid valve 64 so that the rotation speed and phase of the input shaft of the wind turbine generator 16 correspond to the frequency and phase of the voltage applied to the demand side electric wire. Is to be activated.

Specifically, the rotational speed regulator 61 is used when the rotational speed of the input shaft of the wind turbine generator 16 is larger than the line voltage frequency of the demand side electric wire, or when the phase of the input shaft of the wind turbine generator 16 is When the voltage is ahead of the line voltage phase of the demand side electric wire, a solenoid (not shown) of the three-way solenoid valve 64 is energized to increase the volume of mineral oil in the gap 34A formed in the retarder device 30. As a result, the rotor 36 of the retarder device 30 has an increased deceleration force, and its rotational speed, that is, the rotational speed of the input shaft of the wind turbine generator 16 is reduced.
On the contrary, the rotational speed controller 61 is used when the rotational speed of the input shaft of the wind turbine generator 16 is smaller than the line voltage frequency of the demand side electric wire, or when the phase of the input shaft of the wind turbine generator 16 is on the demand side. When the voltage is behind the line voltage phase of the electric wire, energization of a solenoid (not shown) of the three-way solenoid valve 64 is stopped, and the volume of mineral oil in the gap 34A formed in the retarder device 30 is reduced. As a result, the rotor 36 of the retarder device 30 has a reduced deceleration force, and its rotational speed, that is, the rotational speed of the input shaft of the wind turbine generator 16 is increased.

In the above, the retarder control unit 60 detects the rotational speed of the windmill 2 with a rotary encoder (not shown) of the windmill generator 16 and adjusts the deceleration force of the retarder device 30 so that the rotational speed of the windmill 2 becomes a predetermined speed. It is supposed to be.
That is, the retarder control unit 60 adjusts the volume of the mineral oil contained in the gap 34A of the retarder device 30 according to the rotation state of the input shaft of the wind turbine generator 16, and thereby the rotational speed of the wind turbine generator 16 is adjusted. As a result, the frequency and phase of the output voltage of the wind turbine generator 16 are adjusted to a predetermined state corresponding to the line voltage of the demand side electric wire.
The temperature control unit 70 controls the temperature of the mineral oil flowing out from the mineral oil forward pipe 31 toward the inside of the heat storage device 40 so as to be a predetermined value.

That is, as shown in FIG. 2, the temperature controller 70 detects the temperature of the mineral oil flowing out from the mineral oil forward pipe 31, and the intermediate portions of the mineral oil forward pipe 31 and the mineral oil return pipe 32 communicate with each other. An electric mixing three-way valve 73 that adjusts the flow rate of mineral oil to the bypass pipe 72 that operates, and a temperature controller 74 that operates the electric mixing three-way valve 73 to adjust the temperature of the mineral oil flowing out of the mineral oil outgoing pipe 31 ing.
Here, in the retarder device 30, the mineral oil in the gap 34A is heated by the rotation of the rotor 36, and the mineral oil heated to a high temperature is accumulated in the mineral oil tank 37.
The oil pump 33 sucks in the mineral oil on the low temperature side of the heat storage device 40 and returns it to the mineral oil tank 37 of the retarder device 30 through the mineral oil return pipe 32 and also stores the high-temperature mineral oil accumulated in the mineral oil tank 37 through the mineral oil forward pipe 31 It is to be sent to the high temperature side of 40.

The bypass pipe 72 is a flow path that bypasses the heat storage device 40, and connects the middle part of the mineral oil forward pipe 31 and the part on the suction port side of the oil pump 33 provided in the middle of the mineral oil return pipe 32. In this way, the mineral oil passing through the mineral oil outgoing pipe 31 is returned to the mineral oil return pipe 32 on the way.
The electric mixing three-way valve 73 includes a first inlet through which mineral oil from the heat storage device 40 that has passed through the mineral oil return pipe 32 flows, a second inlet through which mineral oil that has passed through the bypass pipe 72 flows, and an oil pump 33. A three-way valve 73A having three outlets for discharging mineral oil to the suction port of the engine and a motor 73B for driving a valve plug (not shown) inside the three-way valve 73A, and the position of the valve plug is moved by the motor 73B. The ratio between the flow rate of mineral oil from the heat storage device 40 and the flow rate of mineral oil that has passed through the bypass pipe 72 is adjusted according to the position of the valve plug.

The temperature controller 74 operates the motor 73B of the electric mixing three-way valve 73 according to the temperature of the mineral oil detected by the temperature detector 71 to move the position of the valve plug, and the flow rate of the mineral oil from the heat storage device 40, The ratio with the flow rate of the mineral oil that has passed through the bypass pipe 72 is adjusted.
Such a temperature control unit 70, when the temperature of the mineral oil detected by the temperature detector 71 is low, the flow rate of the mineral oil that has passed through the bypass pipe 72, that is, the mineral oil that is returned to the retarder device 30 without being sent to the heat storage device 40. The flow rate of the mineral oil is increased, the heating time of the mineral oil in the retarder device 30 is substantially extended, and the temperature of the mineral oil supplied to the heat storage device 40 is increased.
On the other hand, when the temperature of the mineral oil detected by the temperature detector 71 increases, the temperature control unit 70 reduces the flow rate of the mineral oil that has passed through the bypass pipe 72, that is, the flow rate of the mineral oil that is sent to the heat storage device 40, and the retarder device 30 The heating time of the mineral oil is substantially shortened, and the temperature of the mineral oil supplied to the heat storage device 40 is suppressed and further lowered.

In short, the temperature control unit 70 operates the electric mixing three-way valve 73, thereby adjusting the bypass flow rate, which is the flow rate of the mineral oil flowing through the bypass pipe 72, so that the temperature of the mineral oil supplied to the heat storage device 40 is reduced. Temperature control is performed so as to obtain a predetermined temperature.
The generator control unit 80 adjusts the excitation current of the engine generator 18 to control the rotational speed of the engine generator 18 at a constant level, and thus the frequency and phase of the output voltage of the engine generator 18 are appropriate. It has become something to arrange.
That is, the generator control unit 80 includes a rotation speed controller 81 that adjusts the rotation speed of the input shaft of the engine generator 18, and a demand-side electric wire that is supplied with power by the engine generator 18 and the wind turbine generator 16 described above. And a voltage detection coil 82 for detecting the line voltage waveform.

The rotation speed adjuster 81 receives an output signal of a rotary encoder (not shown) provided on the input shaft of the engine generator 18, and based on this output signal, determines the rotation speed and phase of the input shaft of the engine generator 18. It is to be detected.
Further, the rotation speed adjuster 81 can detect the frequency and phase of the voltage applied to the demand side electric wire based on the output signal of the voltage detection coil 82.
Then, the rotation speed regulator 81 adjusts the excitation current of the engine generator 18 so that the rotation speed and phase of the input shaft of the engine generator 18 correspond to the frequency and phase of the voltage applied to the demand side electric wire. It comes to adjust.

Specifically, the rotation speed regulator 81 is used when the rotational speed of the input shaft of the engine generator 18 is greater than the line voltage frequency of the demand side electric wire, or when the phase of the input shaft of the engine generator 18 is When it is ahead of the line voltage phase of the demand side electric wire, the excitation current to the engine generator 18 is increased, thereby reducing the rotational speed of the engine generator 18.
On the contrary, the rotation speed regulator 81 is used when the rotational speed of the input shaft of the engine generator 18 is smaller than the line voltage frequency of the demand side electric wire or when the phase of the input shaft of the engine generator 18 is on the demand side. When it is behind the line voltage phase of the electric wire, the excitation current to the engine generator 18 is reduced, thereby increasing the rotational speed of the engine generator 18.

In the above, the generator control unit 80 detects the rotational speed of the engine generator 18 with a rotary encoder (not shown) of the engine generator 18 and sets the engine generator 18 so that the rotational speed of the engine generator 18 becomes a predetermined speed. The rotational speed of 18 is controlled, and consequently the frequency and phase of the output voltage of the engine generator 18 are adjusted to a predetermined state corresponding to the line voltage of the demand side electric wire.
Here, when the power generation amount of the wind turbine generator 16 is insufficient with respect to the power demand, the rotational speed regulator 81 of the control device 50, in other words, in the heat storage device 40 to supplement the power generation amount of the wind turbine generator 16. The Stirling engine 17 is driven by the accumulated heat, and the engine generator 18 is caused to generate power by the driving force of the Stirling engine 17.

That is, the rotation speed adjuster 61 of the retarder control unit 60 detects the value of the line voltage applied to the demand side electric wire based on the output signal of the voltage detection coil 62.
Then, the rotational speed controller 61 of the retarder control unit 60 is configured so that the rotational speed of the retarder device 30 is such that the voltage value of the output terminal of the wind turbine generator 16 becomes the rated voltage set as the line voltage of the demand side electric wire. Is to control.
On the other hand, the rotation speed adjuster 81 of the generator control unit 80 detects the value of the line voltage applied to the demand side electric wire based on the output signal of the voltage detection coil 82.
A power generation start voltage value is set in advance in the rotation speed adjuster 81 of the generator control unit 80 as a predetermined voltage value that causes the engine generator 18 to start power generation.

This power generation start voltage value is set lower than the value of the rated voltage set as the line voltage of the demand side electric wire.
The rotation speed regulator 81 starts the Stirling engine 17 when the voltage between the lines applied to the demand side electric wire, in other words, the voltage at the output terminal of the wind turbine generator 16 falls below the power generation start voltage value, and the Stirling The engine generator 18 starts power generation with the driving force of the engine 17.
In other words, the rotation speed controller 81 increases the load on the demand side, increases the current flowing through the demand side electric wire, and reduces the voltage at the output terminal of the wind turbine generator 16 below the power generation start voltage value. On the other hand, it is detected that the power generation amount of the wind turbine generator 16 is insufficient, and when the shortage of power generation is detected, the engine generator 18 starts to generate power with the driving force of the Stirling engine 17 .

There are various methods for stopping control of the Stirling engine 17. For example, a thermostat is attached to the high temperature side portion of the heat storage device 40, and the temperature of the mineral oil accumulated in the high temperature side portion of the heat storage device 40 is a predetermined value. If it falls below this, a method of stopping the Stirling engine 17 by a thermostat may be adopted.
According to the first embodiment as described above, the following effects can be obtained.
That is, the retarder device 30 that converts the driving force generated by the windmill 2 into heat and heats the mineral oil, the heat storage device 40 that stores the mineral oil heated by the retarder device 30, and the mineral oil that is stored in the heat storage device 40 The Stirling engine 17 that operates with the heat of the engine and the engine generator 18 that is driven by the Stirling engine 17 are provided, and the mineral oil is heated by the retarder device 30 that decelerates the windmill 2, and the heated mineral oil is stored in the heat storage device 40. As a result, the engine generator 18 is driven by the Stirling engine 17 that accumulates heat and operates with the accumulated heat, so that the Stirling engine 17 keeps the engine generator 18 in a stable state even if the wind speed fluctuates. The electric power can be driven and stable electric power can be obtained. Therefore, electric energy can be extracted from the wind force and used effectively.

In addition, the retarder device 30 can continuously adjust the deceleration force of the windmill 2 due to its mechanism, so that it is possible to obtain electric power according to the wind force.
That is, when the wind power is weak, if the deceleration force of the retarder device 30 is weakened, the wind turbine 2 can be rotated to obtain thermal energy even with the weak wind power, and the obtained thermal energy is stored in the heat storage device 40. can do.
On the other hand, when the wind power is strong, the retarding power of the retarder device 30 can be increased, the amount of thermal energy obtained from the wind power per unit time can be increased, and a large amount of thermal energy can be generated instantaneously, The heat energy thus generated can also be stored in the heat storage device 40.

If sufficient heat energy is accumulated in the heat storage device 40, the Stirling engine 17 can be stably operated using the heat energy of the heat storage device 40, and the engine generator can be operated with the Stirling engine 17 operating stably. If 18 is driven, the stable supply of the electric power always corresponding to the demand can be performed, and the operating rate of the wind turbine generator 1 can be made excellent.
At this time, since the rotation speed of the Stirling engine 17 is controlled to be constant and the output voltage, output frequency, and phase of the engine generator 18 are constant, the electric power output from the engine generator 18 Thus, the output voltage, the output frequency, and the like are good in quality, and thereby, high-quality power can be obtained using wind power without lowering the operating rate.

Further, since the hydraulic pump 11 and the hydraulic motor 12 are provided between the windmill 2 and the retarder device 30, the driving force generated by the windmill 2 is transmitted to the retarder device 30 via the hydraulic oil. 2 and the retarder device 30 can be arranged close to the heat storage device 40 even if the retarder device 30 is spaced apart from the heat storage device 40. When performing, the conveyance distance of mineral oil becomes short and the energy loss accompanying conveyance of mineral oil can be remarkably reduced, Therefore The power generation efficiency of the wind power generator 1 can be improved.
In addition, a wind turbine generator 16 driven by the wind turbine 2 and a control device 50 that detects the rotational speed of the wind turbine 2 and adjusts the deceleration force of the retarder device 30 are provided. Since the rotation speed of the machine 16 is made constant, even if the wind speed changes, the wind turbine generator 16 rotates at a constant rotation speed, and the wind turbine generator 16 can stably generate a predetermined power. it can.

For this reason, even if the wind turbine generator 16 is directly driven by wind power, high-quality electric power can be obtained. In addition, the wind turbine generator 16 is directly driven by wind power to obtain electric power. Since there is no need to convert energy between the energy sources and energy loss caused during the energy conversion is eliminated, the power generation efficiency of the wind turbine generator 1 can also be improved from this point.
In addition, the heat generated when the retarder 30 is decelerated is absorbed in mineral oil and accumulated in the heat accumulator 40 without being discarded, and is used to drive the Stirling engine 17. Even if a portion of the wind energy cannot be converted into electric power by the wind turbine generator 16 due to braking, the portion of the wind energy is converted into electric power by the engine generator 18, so that the wind energy can be used without waste.

  Furthermore, when the power generation amount of the wind turbine generator 16 is insufficient with respect to the power demand, the Stirling engine 17 is driven by the heat accumulated in the heat storage device 40 to supplement the power generation amount of the wind turbine generator 16, and the Stirling engine Since the control device 50 that causes the engine generator 18 to generate power with 17 driving forces is provided, the wind energy obtained by the change in wind speed fluctuates, and even if the fluctuation in wind energy does not match the power demand, the wind energy When there is a surplus, the surplus wind energy is converted into heat energy and accumulated in the heat storage device 40. When the wind energy is insufficient, the Stirling engine 17 is driven by the heat energy accumulated in the heat storage device 40. Thus, the shortage of energy can be compensated, and thereby power supply corresponding to the power demand can be performed.

[Second Embodiment]
FIG. 3 shows a second embodiment of the present invention. In the second embodiment, the wind power generation apparatus 1 that directly converts a part of wind power into the electric energy in the first embodiment, after converting all the wind energy into heat energy, then converts the heat energy into electric energy. The wind power generator 1A is used.
That is, as shown in FIG. 3, the wind turbine generator 1A does not have the wind turbine generator 16 in the first embodiment, and has a combustion furnace device 20 as an auxiliary heat source for heating the mineral oil stored in the heat storage device 40. Is provided.

Combustion furnace device 20 is a device that generates heat by burning fuel such as biodiesel fuel made from plant raw material, and the residue generated after making biodiesel fuel from the raw material can also be used as fuel. is there.
The combustion furnace apparatus 20 heats molten salt as a heat medium by burning fuel.
On the other hand, a heat exchanger 23 is provided inside the heat storage device 40. Inside the heat exchanger 23, a molten salt as a heated heat medium flows.
A heat exchanger 23 provided inside the heat storage device 40 is connected to the combustion furnace device 20 by a molten salt outgoing pipe 21 and a molten salt return pipe 22.

In addition, a molten salt circulation pump (not shown) is provided inside the combustion furnace device 20 in order to circulate the molten salt with the heat exchanger 23. By the operation of the molten salt circulation pump, the molten salt heated in the combustion furnace device 20 is sent to the heat exchanger 23, and the mineral oil in the heat storage device 40 is heated.
At this time, the heat storage device 40 is provided with a thermostat (not shown) for detecting the temperature on the high temperature side.
When the temperature of the mineral oil accumulated on the high temperature side of the heat storage device 40 falls below a predetermined value, the thermostat starts combustion in the combustion furnace device 20 and heats the mineral oil accumulated in the heat storage device 40 with the combustion heat. It is supposed to be.

In other words, the operation of the combustion furnace device 20 is controlled so that the mineral oil accumulated in the heat storage device 40 does not become lower than a predetermined set temperature.
Here, the set temperature described above is set higher than the solidification temperature of the molten salt flowing through the heat exchanger 23, and the molten salt circulation pump (not shown) of the combustion furnace device 20 is set so as to always continue operation. Has been. Thereby, molten salt can always maintain a liquid phase.
According to the second embodiment, the same operation and effect as those of the first embodiment can be achieved, and the following operation and effect can be added.
That is, the combustion furnace device 20 for heating the mineral oil stored in the heat storage device 40 is provided separately from the retarder device 30, and the combustion is performed when the temperature of the mineral oil accumulated in the heat storage device 40 falls below the set temperature value. Since the furnace device 20 starts combustion and heats the mineral oil with that heat, it becomes possible to always store a predetermined amount of heat energy in the heat storage device 40 even if the windless climate lasts for a long time. Thus, stable power supply can be performed without interrupting power supply with respect to demand.

In addition, as an auxiliary heat source, a biodiesel fuel made from a plant that grows by photosynthesis or a combustion furnace device 20 that uses a residue generated after making biodiesel fuel from raw materials as fuel is used. Even if carbon dioxide is generated by combustion because it is derived from carbon dioxide absorbed from the atmosphere, it is considered that the amount of carbon dioxide in the atmosphere is not increased as a whole, and therefore global warming is suppressed. Can contribute.
[Third Embodiment]
FIG. 4 shows a third embodiment of the present invention.
In the third embodiment, the fluid type retarder device 30 in the first embodiment is replaced with a permanent magnet type retarder device 90.

Further, as shown in FIG. 4, the wind turbine generator 1B according to the third embodiment is obtained by adding the combustion furnace device 20 in the second embodiment to the wind turbine generator 1 in the first embodiment. ing.
The retarder device 90 provided in the wind turbine generator 1B decelerates the rotor 36 by a braking force generated when an eddy current flows on the surface of the rotor 36 by a magnetic field emitted from the permanent magnet toward the rotating rotor 36. Is to do.
As shown in FIG. 5, the retarder device 90 is rotatably provided inside a case 34 (not shown), and has a cylindrical rotor 36 made of a material having high magnetic permeability, and a concentric inner side of the rotor 36. A cylindrical stator 35 disposed at a position is provided.

Among these, the stator 35 includes a cylindrical pole piece portion 35B disposed so as to be in close contact with the inside of the rotor 36, and a cylindrical magnet portion 35A disposed so as to be in close contact with the inside of the pole piece portion 35B. The cylindrical yoke portion 35C is disposed so as to be in close contact with the inside of the magnet portion 35A.
The magnet portion 35A is formed with a magnet row in which a plurality of permanent magnets 91 are arranged in the circumferential direction at a predetermined pitch. The portions other than the permanent magnet 91 in the magnet portion 35A are formed from members having extremely low magnetic permeability.
The magnet portion 35A is provided so as to be movable along the circumferential direction with respect to the pole piece portion 35B. The magnet portion 35A is reciprocally driven at least between two positions, a position α and a position β, which will be described later, by an actuator (not shown).

The pole piece portion 35B is formed with a pole piece row in which a plurality of pole pieces 92 formed of a material having high magnetic permeability are arranged in the circumferential direction at a pitch corresponding to the permanent magnet 91. Portions other than the pole piece 92 in the pole piece portion 35B are formed of members having extremely low magnetic permeability.
The pole piece 92 has a length along the circumferential direction corresponding to the permanent magnet 91 on the magnet portion 35A side.
At this time, the position α of the magnet portion 35A in the retarder device 90 will be described in more detail, as shown in FIG. 5 (A), in which the pole piece 92 on the pole piece portion 35B side straddles the two permanent magnets 91. This is a position straddling the north pole of one permanent magnet 91 and the south pole of the other permanent magnet 91.

In a state where the magnet portion 35A is disposed at the position α, the magnetic field that has entered the pole piece 92 from the N pole of the permanent magnet 91 passes only through the inside of the pole piece 92 without passing through the rotor 36. In other words, it reaches the S pole of the other permanent magnet 91 through the magnetic path a shown in FIG.
In the retarder device 90, in the state where the magnet portion 35A is disposed at the position α, the magnetic field of the permanent magnet 91 does not reach the rotor 36, so that no eddy current is generated, and therefore neither braking force nor heat is generated. ing.
Further, the position β of the magnet portion 35A in the retarder device 90 is a position where the pole piece 92 on the pole piece portion 35B side and the permanent magnet 91 overlap each other as shown in FIG.

Then, in a state where the magnet portion 35A is disposed at the position α, the magnetic field that has exited from the N pole of the permanent magnet 91 and entered the pole piece 92 once exits the pole piece 92, passes through the rotor 36, and is again poled. A path to return to the S pole of the other permanent magnet 91 after returning to the piece 92, in other words, to reach the S pole of the other permanent magnet 91 through the magnetic path b shown in FIG. Yes.
In the state where the magnet part 35A is disposed at the position β, the retarder device 90 generates a braking force and heat for decelerating the rotor 36 because the magnetic field of the permanent magnet 91 reaches the rotor 36 and eddy current is generated. It has become.
6A to 6C are development views in which the magnet row of the magnet portion 35A and the pole piece row of the pole piece portion 35B in the retarder device 90 are developed in the circumferential direction.

6, the planar shape of the permanent magnet 91 is a rectangular shape having a vertical end edge 93 extending in a direction orthogonal to the moving direction of the magnet portion 35A, as shown in FIG.
As shown in FIG. 6, the pole piece 92 has a parallelogram shape having an inclined end edge portion 94 extending in a direction inclined with respect to the vertical end edge portion 93 of the permanent magnet 91.
Note that the inclined end edge portion 94 of the pole piece 92 only needs to be inclined with respect to the vertical end edge portion 93 of the permanent magnet 91, and is not limited to the one having a side extending in a straight line. It may have.
In the following, when the permanent magnet 91 is moved to the left in FIG. 6 with respect to the pole piece 92, the permanent magnet 91 comes out of the N pole of one permanent magnet 91 and becomes the S pole of the other permanent magnet 91. A description will be given of the magnetic field that reaches, and thus the amount of heat generated by the retarder 90 in this case.

Even when the magnet portion 35A arranged at the position α is driven to leave the position α, the entire inclined end edge portion 94 of the pole piece 92 arranged on the right side in FIG. 6 is shown in FIG. As described above, in the state where the vertical end edge 93 of the permanent magnet 91 is overlapped, the magnetic field that comes out of the N pole of one permanent magnet 91 and enters the inside of the pole piece 92 does not pass through the rotor 36. Only through the interior of 92, the south pole of another permanent magnet 91 is reached.
That is, the magnetic field emitted from the N pole of one permanent magnet 91 passes through only the magnetic path a in the width direction and reaches the S pole of the other permanent magnet 91.
The magnet portion 35A further moves, and a part of the inclined end edge portion 94 arranged on the right side in FIG. 6 of the pole piece 92 is replaced with the vertical end edge portion 93 of the permanent magnet 91 as shown in FIG. In a state where it deviates to a position where it does not overlap, the magnetic field that has exited the N pole of one permanent magnet 91 and entered the pole piece 92 partially passes through the rotor 36 to the S pole of the other permanent magnet 91. To reach.

That is, a part of the magnetic field emitted from the N pole of one permanent magnet 91 in the width direction passes through the magnetic path a and reaches the S pole of the other permanent magnet 91, and the rest passes through the magnetic path b to the other permanent magnet. It reaches the south pole of the magnet 91.
Here, since the edge of the inclined edge 94 provided on the pole piece 92 is inclined with respect to the edge of the vertical edge 93 provided on the permanent magnet 91, the magnet 35A is positioned at the position β. As the value approaches, the number of magnetic fluxes passing through the magnetic path a gradually decreases, while the number of magnetic fluxes passing through the magnetic path b gradually increases.
As a result, the retarder device 90 continuously increases the eddy current generated on the surface of the rotor 36 by moving the magnet portion 35A from the position α to the position β, and continuously increases the amount of heat generated by the retarder device 90. It is possible to increase it.

The magnet portion 35A further moves to the right, and as shown in FIG. 6C, the inclined end edge portion 94 of the pole piece 92 that overlaps with one permanent magnet 91 does not overlap with the other permanent magnet 91, In other words, when the magnet portion 35A reaches the position β, the magnetic field that has exited from the N pole of the permanent magnet 91 and entered the pole piece 92 passes through the rotor 36 and then reaches the S pole of the other permanent magnet 91. It has become.
In other words, the magnetic field emitted from the N pole of one permanent magnet 91 passes through only the magnetic path b in the width direction and reaches the S pole of the other permanent magnet 91.
In such a retarder device 90, the mineral oil accumulated in the heat storage device 40 is circulated in the inside as a lubricating oil, and is cooled with this mineral oil, in other words, the eddy current The mineral oil is heated by the heat generated by

Also according to the third embodiment as described above, the same operations and effects as those of the first and second embodiments can be achieved.
[Fourth Embodiment]
FIG. 7 shows a fourth embodiment of the present invention. In the fourth embodiment, the Stirling engine 17 and the engine generator 18 in the first embodiment are used as a thermoelectric converter 19 that converts heat into electric power.
That is, in the wind turbine generator 1C according to the fourth embodiment, as shown in FIG. 7, a thermoelectric conversion device 19 including a plurality of thermoelectric conversion elements such as bismuth and tellurium is used as a side surface in order to convert heat into electric power. The heat storage device 40 is attached to.

Here, the heat storage device 40 is provided with a side wall formed of a material having excellent thermal conductivity such as copper or aluminum at least at a portion where the thermoelectric conversion device 19 is attached. The outer surface of the heat storage device 40 is covered with a heat insulating coating material except for the portion where the thermoelectric conversion device 19 is attached.
In addition, an inverter device 19A that converts DC power output from the thermoelectric conversion device 19 into AC power is provided inside the machine shed 5C according to the fourth embodiment.
Also according to the fourth embodiment as described above, the same operations and effects as those of the first to third embodiments can be achieved.

In addition, this invention is not limited to the said embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included.
In other words, the wind turbine is not limited to a propeller type rotating shaft that is horizontally arranged, for example, a Darrieus type wind turbine, a gyromill type wind turbine, or the like in which the rotating shaft is vertically arranged is adopted. Also good.
When a wind turbine with a vertical rotation shaft is adopted, the retarder device can be arranged near the ground even if the rotation shaft of the wind turbine is directly connected to the retarder device, so that the retarder device and the heat storage device can be arranged close to each other. As a result, the hydraulic pump and the hydraulic motor can be omitted, and the overall configuration of the wind turbine generator can be simplified.

In the above embodiment, one prime mover such as a Stirling engine and one engine generator are provided, but a plurality of prime movers and engine generators may be provided. Here, in the case where a plurality of sets of prime movers and engine generators are provided, it is possible to deal with a wide range of power demands by performing unit control for operating the number corresponding to the power demand.
Furthermore, in the said embodiment, although the windmill and the retarder apparatus were provided 1 each with respect to one heat storage apparatus, you may provide several sets of a windmill and retarder apparatus with respect to one heat storage apparatus. Here, if a plurality of sets of wind turbines and retarders are provided for one heat storage device, the heat storage device can be increased in volume to increase the heat capacity that can be stored. Even so, the power supply corresponding to the power demand can be performed.

Further, the auxiliary heat source is not limited to the combustion furnace apparatus that heats the heat medium with the heat generated when the fuel is burned in the combustion furnace, or a solar heat collecting apparatus that heats the heat medium using solar radiant heat, or In addition, a geothermal sampling device that heats the heat medium using geothermal heat may be employed, and further, a combination of at least two or more of a combustion furnace device, a solar heat sampling device, and a geothermal sampling device may be employed. .
Furthermore, the prime mover driven by heat energy as a driving force is not limited to a Stirling engine, but may be other types of external combustion engines. Further, low boiling point liquids such as ammonia, butane, pentane, and chlorofluorocarbon are used as mineral oil or the like. A low-temperature-driven turbine prime mover having a turbine driven by the resulting steam and a steam-driven turbine, a saddle type rotor housing having a side wall curved along a peritrochoid curve, and the rotor housing A rotary prime mover that can be driven by relatively low-pressure steam obtained by boiling in a heat medium such as mineral oil, and a relatively low-pressure steam Low-pressure steam turbine or low-pressure steam-powered prime mover, and air motors that can be driven by compressed air Data, even prime mover such as a compressed air utilization with air turbine or air screw can be employed.

1, 1A ~ 1C Wind turbine generator 2 Windmill
11 Hydraulic pump
12 Hydraulic motor
16 windmill generator
17 Stirling engine as a prime mover
18 Engine generator
19 Thermoelectric converter
20 Combustion furnace as an auxiliary heat source
30 Fluidic retarder device
40 Heat storage device
50 Control unit
90 Permanent magnet type retarder device

Claims (7)

A wind turbine generator that generates power using a windmill that rotates by receiving wind power,
A retarder device formed by converting the driving force generated by the windmill into heat, reducing the rotational speed of the windmill, and capable of heating the heat medium with the converted heat,
A heat storage device that accumulates heat by accumulating the heat medium heated by the retarder device; and
A prime mover that drives the heat stored in the heat storage device as a driving force;
An engine generator driven by the driving force of the prime mover to generate electricity;
A wind turbine generator comprising: Between the windmill and the retarder device, a hydraulic pump that receives a driving force generated by the windmill and pumps hydraulic oil;
A hydraulic motor that rotates by receiving hydraulic oil pumped from the hydraulic pump and that rotates the retarder device;
The wind power generator according to claim 1, wherein a driving force generated by the windmill is transmitted to the retarder device via hydraulic oil. A wind turbine generator that generates power with wind power by engaging an input shaft with a rotating shaft of the wind turbine;
The control apparatus which detects the rotational speed of the said windmill, and adjusts the deceleration force of the said retarder apparatus so that the rotational speed of the said windmill may become predetermined speed is provided. Wind power generator.   When the power generation amount of the wind turbine generator is insufficient with respect to the power demand, the control device drives the prime mover with the heat accumulated in the heat storage device to supplement the power generation amount of the wind turbine generator, The wind power generator according to claim 3, wherein the engine generator is configured to generate electric power with the driving force of the prime mover.   An auxiliary heat source for heating the heat medium stored in the heat storage device is provided separately from the retarder device, and when the temperature of the heat medium stored in the heat storage device falls below a predetermined value, the auxiliary heat source The wind power generator according to any one of claims 1 to 4, wherein the heat medium can be heated by the heat of the air.   Solar heat sampling device that heats the heat medium using solar radiant heat, geothermal heat sampling device that heats the heat medium using geothermal heat, and heat medium heated by the heat generated when fuel is burned in a combustion furnace 6. The wind turbine generator according to claim 5, wherein at least one of the combustion furnace devices is employed as the auxiliary heat source. A wind turbine generator that generates power using a windmill that rotates by receiving wind power,
A retarder device formed by converting the driving force generated by the windmill into heat, reducing the rotational speed of the windmill, and capable of heating the heat medium with the converted heat,
A heat storage device that accumulates heat by accumulating the heat medium heated by the retarder device; and
A thermoelectric conversion device that converts heat stored in the heat storage device into electric power by a thermoelectric element;
A wind turbine generator comprising:

Images