JP2835370B2 - Wind turbine generator for magnetic levitation vehicles - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle auxiliary power supply for supplying electric energy consumed inside a vehicle other than the propulsion of a high-speed railway such as a magnetic levitation railway. There is no wind power generator driven by an axial turbine that can change the pitch of the stationary blade and turbine with ram air obtained by propulsion, and an air path with non-uniform cross section with sound absorbing means is provided inside the body structure The present invention relates to a wind turbine generator for a magnetically levitated vehicle, which enhances the efficiency of taking air into a wind path and exhausting air and reducing noise outside the vehicle.

2. Description of the Related Art At present, a magnetic levitation railway is being developed as a high-speed, safe, and non-polluting mass transportation method in the future.
The propulsion principle is characterized in that the vehicle is levitated and propelled in a non-contact state with the track by the action of the levitation coil on the track side and the action between the propulsion coil and the superconducting magnet on the vehicle.

Due to such a propulsion principle, the traveling speed can be as high as 500 km / h. Therefore, the supply of electric energy such as lighting and air conditioning consumed in the vehicle is difficult due to the above-mentioned high speed in a contact type such as a panda graph, which is a typical conventional method, and therefore, non-supply is difficult. A contact type is desired.

In the present situation of the applicant for the test track vehicle, a storage battery having a capacity corresponding to the power demand is employed.

However, in the future practical use of a magnetic levitation railway, if all necessary power is supplemented by a rechargeable secondary battery, the volume and weight of current battery technology will be enormous. This means an increase in the load on the magnetic levitation coil, or a reduction in the effective payload and a reduction in the effective cabin space.

Also, from the orbital levitation coil and the propulsion coil,
A linear generator for inductive current collection has also been studied, but at present it is not always efficient in terms of current collection capacity, efficiency, and current collector weight.

The present invention relates to a magnetic levitation vehicle power generation device having a configuration that can efficiently supply electric power consumed in a vehicle other than propulsion in a magnetic levitation vehicle and that does not adversely affect the magnetic levitation propulsion when mounted on a vehicle. The purpose is to provide.

SUMMARY OF THE INVENTION The present invention has been studied for various power generators that can be mounted on a vehicle for the purpose of a power generator for a magnetic levitation vehicle capable of efficiently generating power without adversely affecting magnetic levitation propulsion. Focusing on power generation and power storage systems that combine a turbine-type wind power generation device that uses wind pressure generated by the vehicle relative to the stationary atmosphere with a rechargeable storage battery because it travels at high speed, and is derived from its practicality As a result of studying various technical issues, it was found that air resistance, which increases with the increase in effective output of power generation, was reduced, aerodynamic noise and vibration generated by turbines were reduced, and air from the wing surface during wide-range operation. The inventors have found a solution which can prevent the generation of vortices and the increase of noise, and have completed the present invention.

That is, the present invention provides an air passage having a non-uniform cross-section having sound absorbing means and having high efficiency in taking in and exhausting air into the air passage inside the body structure of the magnetic levitation vehicle. A turbine for driving a generator, and a stationary blade disposed upstream and / or downstream of the turbine. The pitch of the turbine and at least the upstream stationary blade can be changed. A wind power generator for a magnetic levitation vehicle, wherein power generation is enabled.

Further, the present invention is the wind turbine generator for a magnetically levitated vehicle according to the above configuration, in which the resistance generated by the turbine is increased by controlling the pitch of the stator vanes and / or the turbine to obtain the braking force of the vehicle. .

Further, according to the present invention, in the above configuration, in order to rotate the turbine as a propeller and reversely inject air from the air intake port to obtain a braking force of the vehicle, a generator driven by the turbine connects a power supply path from another power supply. Provided,
A wind turbine generator for a magnetically levitated vehicle, wherein a generator is operable as the reverse injection motor.

Further, according to the present invention, the wind turbine generator for a magnetically levitated vehicle according to the above configuration, wherein a sound absorbing means made of a material and / or a structure having a sound absorbing effect is used for a hub and a fairing which are support members of the stationary blade. It is.

The present invention focuses on a power generation system that combines a wind power generation device using wind pressure generated by relative running of a magnetically levitated vehicle (hereinafter referred to as a vehicle) with respect to a stationary atmosphere with a rechargeable storage battery. In order to be able to respond to a wide range of speeds and to enable bidirectional driving, the airflow of the trailing vehicle in the direction of travel that occurs when wind power generators are installed at both ends of the train set to enable In this case, the solution of the power generation capacity in the case where the direction is opposite to the normal state (the traveling direction) is proposed, and the above-described problem of the storage battery can be avoided.

Since the output of a wind turbine with the turbine shaft as the drive shaft of the generator is approximately proportional to the cube of the traveling speed, the difference between the amount of power generated during low-speed running and high-speed running must be matched with the power demand of the vehicle. Is required.

This problem is caused by determining the capacity of the wind turbine generator so as to have surplus output when the vehicle is running at high speed, storing the surplus output during power storage, and generating power with a rechargeable storage battery that supplements the output shortage at low speed with the output during power storage. This can be solved by using a charging system, and has the advantage that weight and space can be significantly reduced as compared with the case where the entire demand described above is supplemented by a storage battery.

On the other hand, in order to make the wind power generator light and compact, it is effective to operate the turbine at several thousand to about 10,000 revolutions per minute, but the aerodynamic noise and vibration generated by the turbine increase. It is expected that.

Further, since the turbine generates a resistance in the direction opposite to the traveling direction simultaneously with the effective output, it is necessary to suppress the resistance while increasing the effective output, and it is important to improve the efficiency of the entire apparatus.

Improving the air performance of the turbine is one of the most important factors in increasing the efficiency of the wind turbine, and the performance of introducing air into the turbine and discharging air that has passed through the turbine to the outside of the vehicle is one of the most important factors. It is a close task.

Therefore, the cross-sectional area of the duct in the air passage is not made uniform in the direction of flow, but optimal air compression and expansion are performed in accordance with the operating conditions, that is, conditions such as vehicle speed and turbine speed. Need to be changed to

That is, depending on the position of the vehicle on which the wind power generator is provided in the train composed of required trains, the design and air characteristics of the vehicle, the position of the air intake, the position of the exhaust, etc., the air path between the air intake and the exhaust It is necessary to determine the shape, various wind path arrangements can be considered as described later, for example,
The shape of the air passage itself is not uniform in the flow direction, and if the duct is configured to have a divergent taper so that the downstream side of the turbine expands, air performance is improved.

Furthermore, it is necessary to suppress the noise generated by the turbine from propagating to the outside of the wind power generator as much as possible so that the noise generated by the turbine does not hinder the low noise characteristics inherent in the vehicle. It is necessary to incorporate sound absorbing means made of a material and / or structure having a sound absorbing effect, to absorb noise energy radiated from the turbine, and to use the sound absorbing means also for a hub, a fairing and the like which are support members of the turbine. .

Since wind turbine generators for vehicles are required to operate over a wide range of speeds, it is not possible to maintain a good angle of attack over the entire turbine area by using only a turbine alone. And noise increases.

In order to cope with this, in the present invention, the stator blades are arranged on both or one of the front and rear sides of the turbine, and the pitch of the stator blades is controlled in accordance with the vehicle speed or the wind speed introduced into the wind path to increase the angle of attack of the turbine. It should always be optimal.

In addition, in response to a request for high-speed mass transportation, a train of a plurality of vehicles is taken in accordance with the bidirectional operation of the vehicle with respect to the provided track, and vehicles at both ends thereof are equipped with a wind power generator according to the present invention. To ensure that the wind turbine installed on the last vehicle in the direction of travel does not result in a dead load,
A configuration that enables power generation in the opposite direction, that is, in addition to the above-mentioned pitch-variable stationary blades, the turbine also has a variable pitch,
This increases the power generation efficiency of the entire train set.

Further, as a method of using the variable pitch stator vanes and the turbine outside of the power generation, the resistance generated by the turbine is increased by the pitch control to obtain the braking force of the vehicle, so that the vehicle wind power generator can be used for vehicle operation. This ensures operation in all areas.

Also, in an emergency or the like, the generator driven by the turbine can be supplied with power from another power source such as a rechargeable battery, and the generator is used as a motor, and the turbine is rotated as a propeller to rotate the air from the air intake port. In reverse, and a large braking force of the vehicle can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective explanatory view of a magnetic levitation vehicle showing an example of a wind turbine generator according to the present invention. FIG. 2 is an explanatory view of a magnetic levitation vehicle showing a wind path of a wind power generator according to the present invention, wherein FIGS. A, c, and e are side explanatory views, and FIG. d is an explanatory top view of FIG.

FIG. 3a is an explanatory view of a magnetic levitation vehicle showing the wind path of the wind turbine generator according to the present invention, FIG. 3b is a longitudinal sectional view showing the combined speed of the turbine blades in a forward operation, and FIG. FIG. 5 is a vertical explanatory view showing a combined speed during reverse operation.

FIGS. 4a and 4b are longitudinal explanatory views showing an example of the combined speed of the turbine blade according to the present invention.

FIG. 5 is an explanatory diagram showing a relationship between a turbine blade and a stationary blade in an air passage.

FIGS. 6a, 6b and 6c are longitudinal sectional explanatory views showing the combined speed during the reverse operation of the turbine blade.

FIG. 7 is an explanatory longitudinal sectional view of an air path showing an example of a turbine used in a wind power generator according to the present invention.

FIG. 8a is a longitudinal sectional view of a wind path showing a material and a structure having a sound absorbing effect used in a wind power generator according to the present invention;
FIGS. B and c are cross-sectional explanatory views of the air path wall showing details of the material having the sound absorbing effect and the structure.

FIG. 9a is a graph of frequency and noise level showing an example of noise characteristics of a turbine, and FIG. 9b is a graph of frequency and sound absorption level of an example of a material or structure having a sound absorbing effect. .

Wind path arrangement An example of an air path arrangement of a wind power generator and an example of an air path shape will be described below. Here, an example in which the wind power generator is provided in the leading vehicle will be described. However, as described above, the wind power generator can be provided in any vehicle position of the required train.

Configuration 1 An example of the arrangement of the air path (11) shown in FIGS. 1 and 2a is the opening (1) provided at the lower part of the leading end of the cowling of the leading vehicle (1).
After the air taken in from (0) passes through an air passage (11) of a required length, the air is discharged from an exhaust port (12) opened in the ceiling of the vehicle (1).

The turbine (13) in the air passage (11) is disposed at a required position selected so that the air introduced into the air passage is appropriately compressed, and is actuated. (11) Power is transmitted to a generator (14) provided outside by a transmission mechanism (not shown).

Configuration 2 In the example of the arrangement of the air path (15) shown in FIGS. 2b and 2c, the air taken in from the opening (10) similar to the configuration 1 is introduced horizontally into the turbine (13), and then the vehicle (1) The exhaust port (16) opened to the floor is configured to release the air. The driving force of the turbine (13) shaft is transmitted to a generator (14) provided outside the air passage (15) by a transmission mechanism (not shown).

Configuration 3 In the example of the arrangement of the air paths (17) shown in FIGS. 2 d and e, the air taken in from the opening (10) similar to the configuration 1 is introduced horizontally,
The air passage (17) is divided into two passages (17 ₁ ) and (17 ₂ ) from the middle for exhausting in the horizontal direction, and turbines (13 ₁ ) and (13 ₂ ) are arranged in each passage. The exhaust ports (18 ₁ ) and (18 ₂ ) opened on both side walls are configured to discharge air.

The turbines (13 ₁ ) and (13 ₂ ) in the wind path (17)
The air introduced into the two branched passages (17 ₁ ) (17 ₂ ) as described above is disposed at a required position selected so as to act after being appropriately compressed, and is provided at the shaft of the turbine (13 ₁ ) (13 ₂ ). In this case, the driving force is generated by one generator (14) provided outside the air path (17).
Is transmitted by a transmission mechanism (not shown).

Turbine Above, an example of the wind path in the case where the wind power generator is provided in the leading vehicle has been described.In each case, the aerodynamic characteristics such as the original air resistance of the leading vehicle are not changed as much as possible, and the lift and the down direction are not changed. Care must be taken not to change the coefficients.

Therefore, the air path shape and the aerodynamic characteristics of the turbine in the air path, particularly the blade shape, are important. Hereinafter, an example of the turbine will be described.

Configuration 4 FIG. 3a shows an example in which the wind turbine generator using the wind path (11) of the configuration 1 shown in FIG. 1 and FIG. FIG. 2B is a schematic view showing the magnitude of the combined speed of each blade (20) of the turbine. The blade (20) has an axial wind speed V and a peripheral speed acting relatively to the rotation of the blade. _The combined speed U expressed by the vector sum of _RΩ acts.

Compared to a wind turbine that operates in natural wind, the wind turbine used in a magnetic levitation vehicle has an extremely large wind speed of 80 m / s when traveling at 300 kg / h and 140 m / s when traveling at 500 km / h, which limits the speed of sound. Considered design is required.

In addition, the Mach number of the combined speed acting on the blade easily reaches about 0.8 to 0.95, and at this Mach number, the compressibility of air is effective, so compressibility is important for performance analysis and selection of airfoil. Must be considered. The blade airfoil is
A transonic type with thin wings is suitable.

Further, since the rated wind speed is sufficiently large even if the speed ratio is small, the actual rotation speed is large, on the order of 5,000 to 9,000 rpm. Therefore, the disk load can be as large as 400 to 700 kW / m ^2, and a compact turbine can be used for the required power.

Since the stationary wind turbine generator is required to operate in a wide speed range, the turbine alone cannot maintain a good angle of attack in the entire turbine region alone. For example, the turbine blade shown in FIG. If the angle of attack (20) is in a proper angle of attack, the same speed (20) will cause a stall under some conditions, and the air will peel off from the wing surface, generating eddies and increasing noise.

Configuration 5 To cope with this, in the present invention, FIGS.
As shown in FIG. 7, the stationary blades (22) and (24) are arranged in front and rear positions of the turbine (13), and the vehicle (1) speed or the wind path (1) is set.
1) The pitch of either or both of the stationary blades (22) and (24) is controlled in accordance with the internal wind speed so that the angle of attack of the turbine (13) is always optimized.

Referring to FIGS. 5 and 7, a variable pitch turbine can be employed to obtain the above-mentioned operation and effect. The stationary vanes (22) and (24) of the vanes (22) and (24) are fixedly arranged in the air passage (11).
3) It is easy to provide a variable pitch mechanism in (25), and its control becomes easy. The advantage of such a configuration can be said to be extremely large. The blade (25) of the rear stationary blade (24) in FIG. 7 shows a configuration of a fixed pitch.

In addition, the rear stator vanes (24) can also have the effect of reducing vortex loss, excluding vortex components downstream of the turbine (13).

Further, both the front and rear vanes (22) and (24) are provided with sound absorbing means described later on the hub (27) and the fairing (26), which are support portions thereof, thereby further reducing the noise of the apparatus. Can be achieved.

Bidirectional operation To enable bidirectional operation, as shown in FIG.
When placed on the first car and the last car of the required train,
When the direction of the airflow of the trailing vehicle in the traveling direction is opposite to that in the normal state (the traveling direction), the power generation capacity becomes a problem.

That is, assuming that the airflow is reversed in the state of FIG. 5, the rotation direction of the turbine (13) does not change.
As shown in FIG. 6b, the airflow impinges on the camber side of the blade (20) and the blade (20) is twisted (the torsion angle increases toward the tip as viewed from the root of the blade). In most cases, the angle of attack is large and the operation is performed in a stall state, so that the power generation efficiency is significantly reduced.

Therefore, as shown in FIGS. 3c and 6c, when the blade (20) of the turbine (13) is rotated by 180 ° from the position at the time of the normal motion, it can be said that the operation is most efficient.
The mechanism for changing the pitch by 0 degrees has a drawback that the stroke becomes large and large and complicated.

Further, as described above, the air passage (11) is optimized by increasing the cross-sectional area from the entrance to the exit so as to obtain the maximum efficiency during normal operation. Therefore, in the case of the direction, since the cross-sectional area is reduced, the efficiency is considerably reduced.

Configuration 6 In the example shown in FIG. 7, stationary vanes (22) and (24) are arranged in front and rear positions of the above-mentioned turbine (13), and the stationary vanes (22) and (24) are arranged in accordance with the speed of the vehicle (1) or the wind introduced into the air path (11). By controlling the pitch of one or both of the wings (22) and (24), the turbine (1
3) The aiming angle is always optimized.

In addition, a turbine (1
Incorporating a pitch variable mechanism (not shown) in which the change angle of the plate (20) of 3) is several tens of degrees, which is almost the same as the normal change pitch range, as shown in FIG. When the airflow enters the exhaust port (12) in reverse, the pitch of the blade (20) is changed from the normal state, as shown in FIG. 6a, and one of the stationary blades (22) and (24) is further changed. Alternatively, both pitches can be controlled so that the angle of attack from the root to the tip of the blade (20) is equal to or less than the stall angle. In addition, a in FIG. 6A is a deflection speed component by pitch control of the stationary blade.

In the configuration example shown in FIG. 7, the blade (20) of the turbine (13) is provided with a simple variable pitch mechanism so that the airflow direction of the trailing vehicle is normal (traveling direction).
Even if the direction is reversed, the rotation direction of the generator is the same as during forward driving, and with a slight pitch control, power generation becomes possible.During bidirectional driving, both the leading vehicle and the trailing vehicle are efficiently operated. It has the advantage of being able to generate electricity.

Braking Further, in the configuration diagram shown in FIG. 7, as a method of using the variable-pitch stationary blade and the turbine outside the power generation, the resistance generated by the turbine is increased by the pitch control to obtain the control force of the vehicle. Wind power generators for vehicles,
Operation in all areas of vehicle operation can be ensured.

When obtaining this braking force, in the wind power generator provided in the leading vehicle in the traveling direction, for example, the stationary blade (22)
By controlling the pitch of the brood (23), the resistance is increased to obtain the control force of the vehicle. In the wind power generator installed in the trailing vehicle, the blade (25) of the stationary blade (24) and the turbine (13) By controlling the pitch of the blade (20), the resistance can be increased and the braking force of the vehicle can be obtained.

In addition, a power supply path from another power source such as a rechargeable battery is provided in the generator driven by the turbine so that the generator can be used as a motor, and power is supplied from the other power source to the generator in an emergency or the like. The generator is used as a motor, and pitch control is performed so as to have an appropriate pitch angle as a propeller.
When the turbine is driven and rotated as a propeller, air can be reversely injected from the air intake port to apply a large braking force to the vehicle.

Sound Absorbing Means In order to suppress the transmission of noise generated by the turbine to the outside of the wind power generator, a configuration in which a sound absorbing structure is incorporated in the inner wall of the wind path to absorb noise energy radiated from the turbine will be described.

Configuration 7 The wind path allocated to the vehicle, for example, the air path (1
The sound absorbing means (30) is applied to the entire inner wall as shown in FIG. 8A.

The following structure can be adopted as a specific example of the sound absorbing means (30).

In the example shown in FIG. 8b, a perforated plate (31) is used for the inner wall material, and the honeycomb material (3) is placed between the outer wall (33) and the perforated plate (31).
2) A structure combining a sound-absorbing material and a sound-absorbing structure in which an air layer is provided by arranging the above.

The porosity of the perforated plate (31) and the volume of the air layer formed by the honeycomb material (32) are designed, for example, in accordance with the low-order mode frequency of turbine noise.

That is, the noise generated by the turbine has a plurality of peaks as shown in FIG. 9a, for example, whereas the sound absorbing means has a sound absorption characteristic having a peak at a set frequency as shown in FIG. 9b. Therefore, one noise absorbing means cannot absorb all noises.

Therefore, where the sound absorbing means shown in FIG. 8b is arranged in the air path (11) and which frequency has the sound absorbing characteristic is studied, and the sound absorbing means is designed so as to be able to give a unique sound absorbing characteristic.

Configuration 8 The example shown in Fig. 8c uses a porous material (34) such as various ceramics and sintered bodies for the inner wall material, and a suitable air layer on the back side, that is, the outer wall (33) and the porous material. This is a configuration in which a sound absorbing material in which a honeycomb material (32) or the like is disposed between (34) and an air layer is provided is combined with a sound absorbing structure.

In this case, since the porous material (34) is used for the inner wall material, it is designed in accordance with a relatively higher turbine noise frequency.

Configuration 9 It is effective to provide the sound absorbing means not only on the inner wall of the air passage (11) but also on the turbine (13) side and the stationary blades (22) and (24) side. For example, as shown in FIG. The fairing (26) and the hub (27) may be provided with the sound absorbing means shown in FIGS. 8b and 8c, or may be made of a sound absorbing material having a sound absorbing effect in a required frequency range, or may be attached thereto.

The present invention relates to a rechargeable battery that determines the capacity of a wind turbine generator so as to have a surplus output during high-speed running of a vehicle, stores the surplus output in a storage battery, and compensates for output shortage at low speed with the output of the storage battery. A power generation and charging system is used, and the air resistance that increases with an increase in the effective output of the generated power is suppressed to a small value.

In addition, by arranging the stationary blades, it is possible to maintain a good angle of attack of the turbine in all speed ranges, improve power generation efficiency, and reduce aerodynamic noise and vibration generated by the turbine.

Furthermore, by the pitch control of the stationary blades and the turbine, even in the reverse airflow in the wind power generator of the trailing vehicle in the traveling direction,
This is a turbine-type wind turbine generator that can generate power with a slight pitch control, can generate power efficiently in both the leading and trailing vehicles during bidirectional operation, and has no adverse effect on magnetic levitation propulsion.

[Brief description of the drawings]

FIG. 1 is a perspective view of a magnetic levitation vehicle showing an example of a wind power generator according to the present invention. FIG. 2 is an explanatory view of a magnetic levitation vehicle showing the wind path of the wind turbine generator according to the present invention, wherein FIGS. A, c and e are side explanatory views, FIG. 2 b is a top explanatory view of FIG. d is an explanatory top view of FIG. FIG. 3a is an explanatory view of a magnetic levitation vehicle showing the wind path of the wind turbine generator according to the present invention, FIG. 3b is a longitudinal sectional view showing the combined speed of the turbine blades in a forward operation, and FIG. FIG. 5 is a longitudinal sectional view showing a combined speed during reverse operation. FIGS. 4a and 4b are longitudinal explanatory views showing an example of the combined speed of the turbine blade according to the present invention. FIG. 5 is an explanatory diagram showing a relationship between a turbine blade and a stationary blade in an air passage. FIGS. 6a, 6b and 6c are longitudinal sectional explanatory views showing the combined speed during the reverse operation of the turbine blade. FIG. 7 is an explanatory longitudinal sectional view of an air path showing an example of a turbine used in a wind power generator according to the present invention. FIG. 8a is a longitudinal sectional view of a wind path showing a material and structure having a sound absorbing effect used in a wind power generator according to the present invention, and FIGS. 8b and 8c are wind path walls showing details of the material and structure having a sound absorbing effect. FIG. Fig. 9a is a graph of frequency and noise level showing an example of noise characteristics of a turbine, and Fig. 9b is a graph of frequency and sound absorption level of an example of a material or structure having a sound absorbing effect. . 1 ... Lead vehicle, 10 ... Opening, 11, 15, 17 ... ... Airway, 12, 16, 18 ₁ , 18 ₂ ... ... Exhaust port, 13, 13 ₁ , 13 ₂ ... Turbine, 14 ... Generator, 17 ₁ , 17 ₂ ... passage, 20, 23, 25 ... blade, 21 ... rotating surface, 22, 24 ... stationary blade, 26 ... fairing, 27 ... hub, 30 ... sound absorption Means, 31: perforated plate, 32: honeycomb material, 33: outer wall, 34: porous material.

Continuation of the front page (72) Inventor Rinzo Tokue 2-6-6 Nishi-Nagasu Hondori, Amagasaki City, Hyogo Prefecture Inside Sumitomo Precision Industries, Ltd. (56) References Shiro 59-4769 (JP, U) Shiro 56 −20076 (JP, U) Actual opening 57-33285 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F03D 9/00 B61B 13/08 B60L 13/04 B60L 8/00

Claims (4)

(57) [Claims] An air passage having a non-uniform cross-section having sound absorbing means and having high efficiency in taking in and exhausting air into the air passage is provided in the body structure of the magnetic levitation vehicle. A turbine for driving a generator is provided, and a stationary blade is disposed on the upstream and / or downstream side of the turbine. The pitch of the turbine and at least the upstream stationary blade can be changed, and power generation in both forward and reverse directions can be performed. A wind turbine generator for a magnetic levitation vehicle, characterized in that: 2. A wind turbine generator for a magnetically levitated vehicle according to claim 1, wherein the resistance generated by the turbine is increased by controlling the pitch of the stator vanes and / or the turbine to obtain the braking force of the vehicle. 3. A generator driven by the turbine is provided with a power supply path from another power source to rotate the turbine as a propeller and reversely inject air from an air intake to obtain a braking force of the vehicle. The wind turbine generator for a magnetic levitation vehicle according to claim 1 or 2, wherein the wind turbine generator is operable as the reverse injection motor. 4. A wind turbine generator for a magnetic levitation vehicle according to claim 1, wherein sound absorbing means is used for a hub and a fairing which are support members of the stationary blade.