JP7481687B2 - Wind turbine without propeller mechanism - Google Patents

Description

The present invention relates to a new technology for wind power generators that convert wind energy into electrical energy.

Currently, propeller-type wind turbine generators are the mainstream device for converting wind energy into electrical energy. However, the conversion rate of wind energy into electrical energy by these propeller-type machines is approximately 40%, which is significantly lower than the conversion rate of water energy (potential energy) into electrical energy by hydroelectric power generation, which is 80-90%.
The main reason for this low performance is that about 30% of the wind energy captured by the propeller is wasted from the propeller mechanism. In other words, this is due to the original principle of the propeller function, which is that the propeller itself will not rotate unless the wind passes from the front to the rear of the propeller. Other factors include the loss of wind energy due to the drag motion of the airflow that occurs around the periphery of the propeller when it rotates, mechanical losses due to the transmission, and resistance losses of electrical equipment. This field is related to new technology for wind machines that eliminates these losses.
A wind turbine is a machine that uses wind energy (wind volume x wind speed) as its power source to generate electrical energy. Therefore, the conversion rate of captured wind energy to electrical energy greatly determines the amount of electrical energy produced. The challenge facing wind turbines is to improve this conversion rate.

The amount of captured wind energy (wind volume x wind speed) determines the amount of electrical energy produced. The definition of the amount of electrical energy produced states that electrical energy increases in proportion to the cube of the wind speed. Therefore, wind speed is the most important factor that determines the amount of electrical energy produced. On the other hand, the strength of the wind speed has a large impact on the environment, so the power of wind speed (wind pressure and impact) is shown below by wind speed grade.
Wind speed (m/sec) Wind pressure (pa, Pascal)/Kgf/m ^∧ 2 Phenomenon 20 245/25 You cannot stand up unless you tilt your body at about 60 degrees. Children are in danger of being blown away.
25 383/39 Roof tiles are blown off. Trees are broken.
The chimney collapses.
30 551/56 Shutters or roofs may be blown off. Electric poles may fall.
35 750/76 Cars and train carriages may tip over.
40 980/100 If you do not tilt your body at a 45 degree angle, you will fall.
Pebbles fly.
50 1531/156 Most wooden houses collapse. Trees are uprooted.
60 2205/225 The tower may collapse.
(Note) This data is taken from the internet website of the Hiroi Laboratory at the University of Tokyo. Wind pressure is defined as wind pressure (pa, Pascal) = 1/2pV^2, p: air density, V: wind speed (m/s).

The present invention aims to provide a wind power generator with a high conversion rate to electrical energy, which has a mechanism that provides approximately 80-90% of the wind energy captured in the atmosphere as rotational energy to the generator by eliminating the propeller mechanism of the wind power generator with a low conversion rate as described above, and also aims to reduce construction costs by simplifying the structure compared to conventional propeller-type machines, and to reduce maintenance costs by installing the generator at ground level.In addition, the present invention aims to provide an environmentally friendly wind power generator that does not emit low-frequency sound during operation, does not kill birds, does not damage the scenery, etc.

This new invention captures wind energy (wind pressure = wind volume x wind speed) in the sky by a wind collecting tower with a structure consisting of multiple wind collecting chambers (2) with bowl-shaped openings and a funnel-shaped wind collector (3) to capture wind pressure, i.e., wind energy, in the sky, and converts the wind energy (wind pressure) into high-pressure dynamic pressure according to Bellaire's theorem (corresponding to the law of conservation of energy ) by adopting different diameter pipes in the fluid (air) flow path in the wind collecting tower, and induces approximately 100% of the energy to the ground level through the ventilation pipe. See attached (Fig. 1) (A) (B). The wind power generator of this invention transfers the induced energy (wind pressure) to a flywheel attached to the wind power generator, which rotates and stores it as kinetic energy inside. Then, the stored energy is released to the generator with a leveled rated torque by the function of the flywheel. The generator receives the torque, rotates, and generates electric energy. By using this production process, we provide a wind power generator that does not have a propeller mechanism and generates electric energy. The power generation system of this generator uses the wind pressure (dynamic pressure) as its energy source. As described above, the dynamic pressure is guided by an air duct to the central control room (20) of the wind power generator installed at ground level, and is guided by piping to the flywheel (9) directly connected to the generator (14) installed in the basement (19) of the control room. See attached figure (Fig. 2) (A). The flywheel (9) is equipped with a number of jet nozzles (10) that jet air onto its circumferential portion, and is equipped with a mechanism for rotating by jetting air from the nozzles, and rotates by the propulsion force of jetting the induced dynamic pressure. By rotating, the flywheel stores kinetic energy in itself.
Due to the special function of the flywheel, the stored kinetic energy is released with a leveled rated rotational torque to the generator (14), which generates electrical energy.
This wind power generator receives the wind energy (wind pressure) captured by the wind collecting tower through a ventilation pipe, and approximately 100% of the wind pressure energy is transferred to a flywheel having a rotation mechanism, and approximately 80 to 90% of the energy is used for rotational force and converted into electrical energy. This provides a wind power generator characterized by highly efficient conversion rate of captured wind energy to electrical energy through this energy conversion process.
For reference, in hydroelectric power generation, stored water energy (potential energy) is transported through a water pipe without any leakage during the process, and approximately 100% of the energy is released to the water turbine, of which approximately 80-90% is converted into electrical energy. For this reason, the energy conversion rate is said to be 80-90%.
The process of generating electrical energy in this wind turbine is exactly the same as that of hydroelectric power generation, in which a water turbine is used as a rotating machine, but in this wind turbine, a flywheel is used as a rotating machine. The wind energy used to generate electrical energy is approximately 80-90%, and the amount of energy leaking is extremely small.
This electrical energy generation process is similar to the above-mentioned water turbine power generation process, and in theory, this wind power generator has no wasteful energy leakage and has a high level of energy conversion rate.

Concept of the power generation of this wind power generator This wind power generator generates electric energy using the wind energy (wind pressure) captured by the ventilation tower described in paragraph (0005) as a power source. Therefore, the amount of electric energy generated depends on the magnitude of the captured wind pressure (wind volume x wind speed). And, by the effect of the variable diameter pipe, the total pressure of the wind energy is converted into approximately dynamic pressure energy.
Physically, according to the law of conservation of energy, the converted kinetic energy is equal to the total pressure of the captured wind energy. In other words, the total pressure F(N) of the captured wind energy on the swept surface is defined as F(N) = 1/2xpxAxV^2. Here, p is the air density of 1.225, A is the swept area (m^2), and V is the wind speed (m/sec.). In the same formula F(N), if the radius of the different diameter pipe is halved, the area (A) of the same different diameter pipe becomes 1/4, and according to Bernoulli's theorem, F(N) is constant and unchanging, so V^2 increases by 4 times. In other words, by reducing the area as much as physically possible, V^2 increases at an accelerated rate. That is, by reducing the area (A) to 1/a, V^2 increases by its reciprocal, a times, and therefore the dynamic pressure (Pa) = 1/2xpxV^2 increases by a times. Here, by reducing the area (A), the total pressure F(N) = 1/2xpxAxV^2 is converted into energy into a dynamic pressure (Pv) = 1/2xpxV^2. This is an application of Bernoulli's theorem, which states that if the area of a fluid flow path is reduced, the captured total pressure energy is converted into dynamic pressure in accordance with a times the reciprocal of the reduction ratio (1/a), but the absolute amount of the total pressure energy remains unchanged.
(Supplementary Note) Bernoulli's Theorem Bernoulli's theorem is a theorem that states that the total amount of kinetic energy (wind energy in this case) of a fluid in any cross section of a pipe with a different diameter is constant and unchanging. In other words, as an example, if the total amount of energy at the inlet of the pipe is Q1 and the total amount of energy at the outlet of the pipe is Q2, then Q1 = Q2, which corresponds to the "law of conservation of energy ." This theorem assumes that the flow is a perfect fluid (non-viscous, non-compressible), but it can also be applied as a phenomenon to air or water that is close to this perfect fluid. In other words, devices such as high-pressure cleaners, water jet cutters, and high-pressure air duster cleaners apply this theorem, but these cutters are devices that can cut any object by using a high dynamic pressure of about 300 MPa with a nozzle outlet area diameter of extremely small 0.1 to 1.0 φ mm/m, creating a high water speed. This is an example of the benefit of high dynamic pressure.
On the other hand, the total amount of wind energy is Q1 = Q2 = 1/2xpxAxV^2, assuming that the wind turbine is installed at ground level, the air density (p) is 1.225, the potential energy is treated as zero due to atmospheric pressure, and the temperature condition is room temperature. Here, A is the cross-sectional area of the pipe, and "pxA" represents the mass per unit time. In other words, in a different diameter pipe, the flow rate of Q2, which has a reduced cross-sectional area, becomes faster, so the mass per unit time is constant and unchanged, and therefore the amount of energy is Q1 = Q2. In other words, this is the "law of conservation of mass of fluids."
The strength of the wind speed determines the absolute amount of this dynamic pressure (Pv) energy, and this wind turbine is a new concept in power generation that uses this dynamic pressure as an energy source to produce electrical energy.
In a wind power generator, the wind speed (V) determines the amount of electrical energy produced. As mentioned above, in a propeller type wind power generator, the cut-out wind speed is set at 25 m/s due to its structure and mechanism, and operation above this is impossible due to the strength of the structure. In other words, it is impossible to rotate a huge rotating body (propeller) with a diameter of approximately 50 m in a strong wind of more than 25 m/s due to the strength related to the structure. Furthermore, a propeller type machine stores heavy objects such as a generator and a speed increaser in a container called a nacelle suspended in the sky. Therefore, this nacelle weighs several tens of tons and is suspended on a support (tower) approximately 80 m above ground level. As a result, the center of gravity of the structure is quite high in the sky.
When the tower encounters the huge wind pressure of a typhoon with its center of gravity in the sky, it will sway back and forth and side to side, resulting in stress distortion and metal fatigue that can lead to the tower collapsing. Under such circumstances, the propeller-type wind turbine has a cut-out wind speed of 25 M/s.
Therefore, in order to generate electricity even in relatively strong winds such as those caused by typhoons, it is physically rational to install the rotating machinery and heavy generating equipment at ground level, as in hydroelectric, thermal, or nuclear power plants, and then to capture wind energy (wind pressure) in the sky and guide it to the ground through ventilation pipes to generate electricity at ground level.
Therefore, the wind-collecting tower described in the above paragraph (0005) was invented, which directly captures high-pressure wind energy (wind pressure) in the sky and directly transmits the same wind pressure to ground level.
The invention of this patent application is a wind power generator that does not use a propeller mechanism and uses the wind energy (wind pressure = dynamic pressure) captured by the wind-collecting tower as an energy source to guide the generator to generate electricity. (See attached Figure 3)

Application of dynamic pressure generated by the wind collecting tower The wind energy (wind pressure) provided to this wind power generator is generated by the wind collecting tower. The wind collecting tower is equipped with multiple funnel-shaped wind collectors, each connected in a vertical configuration with different diameter pipes. The purpose of adopting different diameter pipes as a feature is, as mentioned above, to reduce the pipe area and convert the wind pressure into high dynamic pressure according to Bernoulli's theorem. Commercially available high-pressure cleaners apply this theorem, reducing the tip of the cleaning nozzle to generate dynamic pressure about 37 times that of water supply pressure, and claim to use this for cleaning. Also, in space rockets, the engine gas outlet diameter is narrowed to increase dynamic pressure, obtaining further propulsion and increasing speed.
The wind collecting tower uses different diameter pipes and converts the wind energy (wind pressure) into high level dynamic pressure based on the principle of uniformity. The wind power generator of the present invention is a new technology wind power generator that uses this dynamic pressure as an energy source to generate electrical energy.

圧（Ｐｖ）は、Ｐｖ＝１／２ｐＶ＾２より、２４５（ｐａ，パスカル）→約２５Ｋｇｆ／ｍ＾２）である。（ｐは空気密度で、１．２２５とする）、添付 （図 １）（Ｂ）参照
ここで、前記漏斗型集風器の入口面積（Ｆ）の円半径（２．５ｍ）を１／２（半径１．２５ｍ）にした場合、上記（Ｆ）の面積は、１／４になる。（円の面積、π ｘ ｒ＾２より）因って、上記定理より、異径管の出口部位の動圧は、４倍の９８０（ｐａ）→約

更に、同異径管の管路の円半径を１／２（半径０．６２５ｍ）にすると、４倍の３９２０（ｐａ）

１／ａにすれば、その逆数のａ倍で動圧は増大する。即ち、これは、エネルギー保存の法則に準じるベルヌーイの定理の応用である。
因みに、参考までに、火力発電３０万ＫＷ出力の蒸気タービンの動圧は２５Ｍｐａ

２である。即ち、１ｍ＾２当たり、２，５００トンの重力が作用していることである。以上の計算は管路の抵抗ロスが無い場合の値である。又、通風チャンバーの設置位置レベル、或いは、空気の温度差によって若干の値の変動はある。Calculation example of dynamic pressure: Here, as an example, the inlet area (E) of the wind collecting chamber is 20M^2 (4m length x 5m width), and the circular area of the wind receiving inlet of the funnel-shaped wind collector is (F), and both are approximately the same.

The pressure (Pv) is 245 (pa, pascal) → approximately 25 kgf/m^2) because Pv = 1/2pV^2. (p is the air density, set to 1.225). See attached (Figure 1) (B). Here, if the circle radius (2.5m) of the inlet area (F) of the funnel-shaped air collector is halved (radius 1.25m), the area of (F) above will be 1/4. (Area of a circle, π x r^2) Therefore, according to the above theorem, the dynamic pressure at the outlet of the different diameter pipe will be 4 times as much, 980 (pa) → approximately

Furthermore, if the radius of the pipes is halved (radius 0.625 m), the pressure will be four times as much, 3920 (pa).

If the ratio is 1/a, the dynamic pressure increases by a factor of a, which is the inverse of the ratio. In other words, this is an application of Bernoulli's theorem, which conforms to the law of conservation of energy .
For reference , the dynamic pressure of a steam turbine for a 300,000kW thermal power plant is 25MPa.

2. In other words, 2,500 tons of gravity is acting per 1 m^2. The above calculations are for cases where there is no resistance loss in the pipeline. Also, the values may vary slightly depending on the installation level of the ventilation chamber or the air temperature difference.

Calculating output from wind energy The formula for calculating output from a wind power generator is defined as follows: Wind energy = P (W, watts) = 1/2πp・R ^∧ 2・V ^∧ 3. Here, p is the air density, which is 1.225, R (m) is the radius of the swept area (circle), and V (m/s) is the wind speed. (Incidentally, the wind-receiving chamber that receives the wind from the wind-collecting tower is funnel-shaped, and the wind-receiving part is a perfect circle.) From this formula, it can be seen that the key to increasing the output P is to increase the wind speed (V), which is proportional to the cube. Also, from the conversion formula from wind speed to dynamic pressure, dynamic pressure (Pa, pascal) = 1/2pV ^∧ 2, it can be seen that dynamic pressure is proportional to the square of the wind speed. In other words, this shows that wind speed is an important factor for wind energy, and if the wind speed doubles, the dynamic pressure increases fourfold. However, due to the law of conservation of energy, the total amount of energy passing through the ventilation pipe does not change (ignoring the resistance and temperature conditions inside the pipe).
Here, the wind pressure energy F(N) acting on the wind receiving surface of the wind collecting chamber in the wind collecting tower is expressed as F(N) = 1/2xpxAxV^2, where p is the air density (1.225), A is the wind receiving area (m^2), and V is the wind speed (m/sec.). And the work output P(kW) is defined as P(kW) = Cp (conversion rate) x 1/2xpxAxV^3 = Tn/9548.
Here, T represents the torque generated by the rotating body, and n represents the rotation speed of the rotating body.
Here is an example of the calculation of F(N) above.
That is, when p = 1.225, A = 8m length x 6m width = 48m^2, V = 20m, and V^2 = 400m, F(N) = 1/2 x 1.225 x 48 x 400 = 11,760 (N) / unit chamber, when the chamber is in three stages (one wind collection tower), the wind energy of one wind collection tower is 35,280 (N).
Here, the required torque of a 1000kW output generator (rotation speed 100 rpm) is calculated backwards from the definition formula P(kW)=Tn/9548, and the torque required by the generator is T=95,480 (Nm). The tangential force F(N) of the flywheel is calculated backwards from this torque. That is, in the definition formula T=F(N)xR(m), if R=3m, F(N)=95,480/3≒31,830(N). The wind energy transferred from the wind collecting tower is 35,280(N) as mentioned above, which satisfies the tangential force F(N), 31,280(N), which constitutes the torque (T) required by the generator.
(Note) This is a theoretical calculation related to output, and ignores piping resistance related to piping ventilation and temperature conditions.
Furthermore, in the case of a 3000kW output generator (rotation speed: 100 rpm), three of these wind-collecting towers are connected together to generate wind energy and transmit it to the wind power generator. See attached (Figure 4).
It is recommended that this wind turbine be installed offshore where the weather conditions are favorable for wind power.
Attached (Figure 5) is an illustration of the wind turbine installed on an offshore platform. Japan is surrounded by ocean on all sides, so offshore wind power generation is a prime candidate for the development and utilization of renewable energy.

The system flow for generating electricity with this wind power generator is as follows. See attached (Figure 6). 1. Wind pressure control needle valve (1) detects the set wind pressure (hereafter referred to as dynamic pressure) →
2) The solenoid valve (5) opens in response to a command from the central control panel (18), causing the compressor (11) to spray compressed air.
▲3▼Starting the flywheel (9) →
4. After 4 to 5 seconds from the start of the start-up, the wind pressure control needle valve (1) opens to release the dynamic pressure. At the same time, the solenoid valve (5) closes and the solenoid valve (4) opens.
5. The flywheel (9) rotates at an increased speed due to the dynamic pressure. The flywheel itself stores kinetic energy.
6) Controlling the rotation speed of the flywheel (9) by controlling the dynamic pressure of the needle valve (1) (maintaining the set rotation speed)
▲7▼ Fluid coupling (13) clutch ON operation →
8. The kinetic energy stored in the flywheel (9) is released to the generator (14) as a rated torque.
▲9▼Generator (14) Rotation start-up and power generation →
▲10▼Creation of Electric Energy → Converters, Energy Storage, and Energy Transmission

Flywheel characteristics and power calculations A flywheel is a rigid body with uniform density. It has the function of storing kinetic energy by rotating. It also has a special function of releasing the torque required by the connected generator as a leveled rated torque. This wind turbine generator is a power generation system that effectively utilizes the characteristics of the flywheel.
That is, the central mechanism of this wind power generator is the flywheel (9) and the generator (14). As mentioned above, the flywheel (9) has a special function of storing kinetic energy by rotating and releasing a leveled rated torque to the load side (generator).
The torque (T) generated is the flywheel's contact force, F (N), which is the mass of the flywheel (kg) multiplied by the acceleration of gravity (9.8N) multiplied by the radius of the wheel (R), i.e. T = F (N) * R.
On the other hand, energy is defined as the ability to do work. That work L is defined as:- Work L (Nm) = Force F (N) x Distance S (m). Here, the distance traveled by a rotating body is 2πRn (m), which is the circumference 2πR multiplied by the number of rotations (n). Therefore, the formula for work is:- Work L (Nm) = Force F (N) x 2πRn (m)
= 2πFRn (N m)
= 2πTn (N m)
It is defined as follows.
The above is the amount of work done in one minute. When converted to seconds (power = power), it is:
Power P = 2πTn (N m) / 60 (sec) = Tn / 9549 (kW)
Here, P = power (kW), T = torque (Nm), n = rotation speed (rpm).
As an example, when the mass of the flywheel is 3,500 (kg), the radius (R) is 3 (m), and the rotation speed (rpm) is 100 (rpm), the power per stage of the flywheel is as follows.
Torque (N m) = tangential force (N) (3,500 kG x 9.8) x 3 (radius, m) = 102,900 (N m)
Power P = Torque 102,900 (N) x 100 (rpm) / 9,549 ≒ 1,100 kW
In other words, the flywheel stores 1,100 kW of kinetic (power) energy by rotating (rpm) 100 times.
For this purpose, it is necessary to transfer the external force kinetic energy of the torque of 102,900 (N) to the flywheel. Here, the wind collecting tower captures wind energy (wind pressure) and creates kinetic energy. That is, it is necessary to create the required energy of 102,900 (N) with the target output of 1,100 kW.
As an example, let us assume that the number of wind collecting chambers that make up the wind collecting tower is three. See attached (Fig. 1). At a wind speed of 20 m, the wind receiving area per chamber (8 m long x 6 m wide) is 48 m^2. With three chambers, the wind receiving area is 144 m ^{^} 2. Therefore, the wind energy (wind pressure, F(N)) on the wind receiving surface is calculated as F(N) = 1/2 x 1.225 (air density) x A (wind receiving area) x V^2 (wind speed), and is calculated as F(N) = 1/2 x 1.225 x 144 x 400 = 35,280 (N).
Here, multiple wind collecting towers are connected to increase the amount of captured wind energy and increase the output. As an example, the attached (Figure 4) is an image of a triple wind collecting tower. Therefore, the total wind energy (N) is 35,280 (N) x 3 ≒ 106,000 (N) of kinetic energy generated by the three wind collecting towers. The energy, 106,000 (N), satisfies the above required energy of 102,900 (N). The energy, 106,000 (N), is converted into dynamic pressure energy by the mechanism of the wind collecting tower (applied with a different diameter pipe for the ventilation pipe), and transferred to the flywheel, which generates rotational torque by mechanical (rotational) energy. Then, the flywheel releases the torque required for the generator to generate electricity, generating electrical energy.

The main components of this wind turbine are as follows. The equipment is stored in the central control room (20) and the underground storage room (20). See attached (Figure 2) (A). ○ Dynamic pressure control needle valve (1)
It is one of the most important mechanisms for controlling the rotation speed of the flywheel (9) by controlling the wind energy (wind pressure ⇒ dynamic pressure) captured by the wind collecting tower.
The flywheel (9) is directly connected to the generator (14) via a fluid coupling (13), but it is necessary to maintain the rated rotation speed required by the generator. To meet this requirement, the rotation speed of the flywheel (9) must be matched to the rated rotation speed of the generator. To achieve this, the dynamic pressure emitted by the wind pressure control needle valve (1) is controlled to automatically control the opening and closing of the needle valve (1) to control the strength of the dynamic pressure, thereby automatically controlling the rotation speed. The structure of the needle valve (1) is shown in the attached drawing (7). The control operation of the needle valve (1) is hydraulically operated and is performed automatically by commands from the central control panel.
○ Flywheel (9)
This wind power generator is started by a command from the central control room when the needle valve (1) detects that the dynamic pressure (Pa, Pascal) sent by the wind collecting tower through the ventilation pipe is equal to or greater than a specified value. The flywheel (9) is a heavy object weighing several tons. Therefore, the starting torque required for starting is extremely large. Therefore, in order to start the generator reliably and quickly, a starting method using compressed air from a compressor (11) is applied. The mechanism of this starting method applies the mechanism of Patent Registration No. 5413757 .
That is, in this starting mechanism, the electromagnetic valve (5) attached to the air bottle (pre-filled with compressed air) attached to the compressor (11) opens in response to a command from the central control panel, and compressed air is pumped through the piping to the main shaft (hollow shaft). The compressed air passes through the hollow part of the hollow shaft and is jetted out from multiple air ejection nozzles provided on the circumference of the flywheel (9), causing the flywheel (9) to start rotating. Compressed air is also used in torpedo launchers for submarines, and its power has been proven, so there is no problem with this as a rotation starting method. The compressed air stops being pumped out by closing the electromagnetic valve (5) immediately after starting. After starting, the flywheel (9) continues to rotate for a while due to inertia. Thus, 4 to 5 seconds after startup, the needle valve (1) and its associated solenoid valve (4) are opened by a command from the central control room, and the dynamic pressure is pumped to the flywheel (9), continuing the rotation. After the rotation speed reaches the set rated rotation speed as detected by the sensor, the associated fluid coupling (13) is turned ON, and the rated torque required by the generator (14) is released. The generator (14) starts rotating at the rated torque, generating electricity and creating electrical energy.
○Fluid coupling (13)
The fluid coupling (13) used in transmitting the torque to the generator (14) is effective as a mechanism that absorbs shocks that occur when transmitting power to start rotation by the flywheel (9) and shocks that occur when the flywheel suddenly stops, as these shocks are absorbed through the liquid, and do not adversely affect the generator.
○Disc brake (11)
If a system malfunction makes it impossible to control the rotation of the flywheel (9), it is predicted that the rotation speed of the flywheel will rapidly increase, destroying the rotation mechanism.
To prepare for this situation, an upper limit is set for the rotational speed of the flywheel, and when this set value is detected by a sensor, the solenoid valve (12a) attached to the disk brake (12) opens according to a command from the central control room, releasing compressed air to the disk brake (12), activating the brake and bringing it to an emergency stop. At the same time, the solenoid valve (12a) closes according to a command from the central control room, stopping the pumping of dynamic pressure. The disk brake (12) is a necessary piece of equipment as a safety mechanism for the system.
○Generator (14)
Specification Type: Vertical shaft permanent magnet type multi-pole synchronous generator Output: 500kW to 3000kW
Rotation speed: 100 rpm to 200 rpm
The purpose of the generator (14) is to receive the leveled rated torque released from the flywheel (9) and generate electricity using a rotating mechanism.
Here, if the value of the torque released from the flywheel (9) is (T1) and the rated torque required by the generator (14) is (T2), then in terms of design planning, T1 must be equal to or greater than T2. Note that the generator requests and absorbs only the set rated torque from the flywheel during rated operation, and does not absorb any torque greater than that. Even if the torque stored on the flywheel side is greater than the required torque, that is, T1-T2=T3, the T3 torque is stored in the flywheel as residual energy. Thus, the electrical energy generated by the generator is converted to AC power by the converter and stored and transmitted.
○Compressor (10)
The first purpose of the compressor (10) is to start the flywheel (9) with compressed air, as described above, and the second purpose is to send compressed air to the disc brake (12) in the event of an emergency, to stop the flywheel (9).
As for the first objective, starting, the flywheel is a heavy rotating body with a mass of over 1 ton, and therefore the torque required to start the rotation of the wheel is extremely large, so the objective is to force the wheel to rotate using compressed air in order to ensure the start. The power of the compressed air is well known, as it is used in torpedo launchers for submarines (compressed air pressure is approximately 70 kgf/cm^2 to 140 kgf/cm^2).
The flywheel starting system applies the starting method of Patent Registration No. 5413757. That is, a hollow shaft is used as the main rotating shaft, and compressed air is injected through the hollow shaft from multiple air injection nozzles installed around the circumference of the flywheel (9) to forcibly rotate the flywheel.
The compressed air pressure and injection volume are set according to the scale of the flywheel (9). The air tank attached to the compressor (11) is always kept at a specified air pressure, and the mechanism is such that compressed air can be pumped out immediately at any time by command from the central control panel.

Power supply for control operations and power supply for running equipment The power supply for the central control panel and the power supply for running the compressor, hydraulic equipment, etc. will be provided by the solar panels installed on the facility.

First, by using it in conjunction with the wind collecting tower described in paragraph (0005) that captures wind energy, it is possible to operate the generator at a wind speed above the cut-out wind speed (25 m/sec). The upper wind speed at which the generator can be operated depends on the construction strength of the ventilation tower against wind pressure. In practice, the cut-out wind speed of this generator can be raised to at least 40 m/sec, and the wind power generator of the present invention can operate at a wind speed level higher than that of conventional propeller-type wind power generators.
Secondly, by using this machine in conjunction with the ventilation tower, the conversion efficiency of wind energy to electrical energy is more than twice that of conventional propeller type wind power generators, that is, it is possible to operate at a conversion efficiency of 80 to 90% of the captured wind energy to electrical energy, which is almost the same as the conversion rate of water energy (potential energy) to electrical energy in hydroelectric power generation.
Thirdly, it has become possible to use this power generation system at ground level, similar to hydroelectric and thermal power generation, which means that the overall construction cost is cheaper than building at high altitudes, the installation cost of the equipment is also cheaper, and since equipment maintenance can be easily performed at ground level, the maintenance cost is also cheaper.
Fourth, it is an environmentally friendly wind turbine. Propeller-type wind turbines do not emit low-frequency noise during operation, which is harmful to the health of nearby residents, nor do they cause many bird strikes while the propellers are rotating, which kill migratory birds. Furthermore, although they are built together with the ventilation towers, they do not spoil the scenery as a structure, just like lighthouses along the coast.

(A) External view of the wind collection tower 1 and an enlarged view of the Y part. (B) Assembly concept of the funnel-shaped wind collector and wind collection and pressurization concept of the wind collection chamber 2. (A) External view of the wind turbine (B)-1 Detailed view of labyrinth 6 (B)-2 View of the flywheel from the "E" arrow and "Y-Y" cross section A power generation system that combines the wind turbine of this invention with a wind-collecting tower (Utility Model Registration No. 323707) Image of a triple wind-collection tower Image of an offshore wind power plant equipped with the wind turbine of the present invention Flowchart of the power generation system of the wind power generator of the present invention FIG. 1 shows the opening and closing operation and function of the air pressure control needle valve 1. (A) The closing operation of the needle valve. (B) The opening operation of the needle valve. (C) The hydraulic opening and closing operation of the needle valve.

1 Air pressure control needle valve 1a Hydraulic drive unit 1b Wormkier 1c Air injection nozzle 2 Needle valve control hydraulic pressure generating unit 3 Small pipe, for dynamic pressure pumping 4 Solenoid opening and closing valve, needle valve side 5 Solenoid opening and closing valve, compressor side 6 Labyrinth 7 Thrust & radial bearing 8 Hollow shaft 9 Flywheel 10 Jet injection nozzle 11 Compressor 12 Disc brake 12a Solenoid opening and closing valve, disc brake 13 Fluid joint 14 Generator 15 Radial bearing 16 Storage battery 17 Silencer 18 Central control panel 19 Underground storage room, flywheel 20 Central control room

Claims (1)

This wind power generator is characterized by the following structure: high-pressure dynamic pressure (i.e., kinetic energy) generated from wind energy in the sky is guided by piping through a variable-diameter ventilation pipe to a central control room (20) installed at ground level, via a wind pressure control needle valve (1) installed in the control room, and connected to a flywheel (9) directly connected to a generator (14) installed in a basement storage room (19) of the control room. The kinetic energy is released to the flywheel (9) which is started by a compressor (11) installed in the control room, so that the flywheel (9) continues to rotate and stores kinetic energy in itself. The kinetic energy is released to the generator (14) as a rotational torque, thereby generating electrical energy.