JPS598669B2 - power generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power generation device that generates power by using fluctuating fluid energy such as wind power and waves. This refers to a power generation device that uses wind power to convert the energy into electricity, uses the rotational force to turn a generator, converts it into electrical energy, charges a storage battery with the electricity, and supplies stable electricity from the storage battery. The present invention relates to a wind power generation device that generates electricity.

This type of power generation equipment uses a variable pitch propeller and controls the rotation speed to maintain a stable rotation speed when converting fluid energy such as wind power, which is easily fluctuated, into rotational force of mechanical energy. For example, a mechanical governor using centrifugal force is used to smooth energy fluctuations and rotational speed.

The rotational force obtained in this way is used to turn a generator. Conventionally, generators have been separately excited or self-excited using a core-wound rotor or a core-wound stator. A generator was used.

These generators require a large rotational torque to start.

Therefore, even if the rotation of the propeller is directly transmitted to the generator, the generator rotates slowly and cannot generate the desired amount of electricity.

For this reason, the rotation of the propeller is transmitted to the speed increaser to increase the rotation speed, and the rotation of the speed increaser turns the generator to generate the desired amount of electricity.

In addition, since torque energy such as wind power is generally small, it is necessary to increase the torque energy with the governor mentioned above. A latch is mechanically interposed between the propeller and the propeller, and the clutch is disengaged to allow the propeller to idle until the propeller rotation speed and torque reach a certain value (a value that is sufficient to rotate the generator). In many cases, the clutch is connected to turn the generator when the propeller rotation speed and torque rise to the above-mentioned predetermined values.

The present invention provides anisotropic manganese. By using a generator with low starting torque that has a multi-pole magnetized rotor made of aluminum permanent magnets and an air-core winding stator, fluid energy such as wind and waves is small and unstable. This eliminates the need for complex mechanical transmission mechanisms such as clutches and speed increasers, and simplifies the device without degrading power generation performance.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of the wind power generator, and FIG. 2 shows the appearance of its main parts.

In the figure, reference numeral 1 denotes a variable pitch propeller serving as a wind motor, and has a rotating shaft 2.

3 is a tail wing, 4 is a strut, and 5 is a turntable rotatably attached to the upper end of the strut 4.

The propeller 1 and the tail 3 are mounted on the turntable 5 so that the propeller 1 always faces upwind due to the action of the tail 30.

The propeller 1 is equipped with a governor 6 that operates by centrifugal force, and when the number of revolutions of the propeller increases above a predetermined value, the governor 6 works to change the pitch of the propeller to stabilize the number of revolutions of the propeller.

7 is a generator directly connected to the rotating shaft 2 of the propeller 1, and the electric power obtained here is charged to a storage battery 9 via a constant voltage device 8.
Stable power is supplied from the storage battery 9 to the load 10.

3 and 4 show the configuration of the generator 7. FIG.

In the figure, 21 is a rotating shaft directly connected to the rotating shaft 2 of the propeller 10, 22 is a rotor that rotates integrally with the rotating shaft 21, 23 is an air-core wire-wound stator disposed on the outer periphery of the rotor 22, 24 is an iron yoke that also serves as an outer case, and 25 is a bearing.

The rotor 22 is made of a non-directional manganese-aluminum permanent magnet, and is magnetized with multiple poles throughout its diameter.

In addition, the air-core type winding stator 23 refers to a stator that does not have a magnetic material such as an iron core in the winding stator, for example, a winding coil fixed with synthetic resin, or a non-magnetic insulator such as synthetic resin. There is one in which coils made of a group of conductors are formed on both sides of a carrier made of material using printed wiring technology.

Anisotropic manganese and aluminum permanent magnets are 68.
0 to 73. owt% manganese (Mn), (
1/10Mn-6.6)~('/3Mn-
2 2. 2) It is an Mn-ht-C alloy with a basic composition of wt% carbon (C) and the balance aluminum (At), and is subjected to the necessary heat treatment after melting and casting, and then
36) It is made anisotropic by warm plastic working in the temperature range of ~830°C.

Its magnetic properties are Br-6000~6500G, BHc-
2000~3000Qe, (BH)max=5~8X
1 0' G, reaches Qe.

Further, when extrusion force is applied as warm plastic working, an axially anisotropic magnet is obtained, and when upsetting is performed, a diametrically anisotropic magnet is obtained.

In addition, this plastic working process results in a permanent magnet with extremely strong mechanical strength, for example, a tensile strength of 50 kg.
/'-mm2t transverse rupture strength 30kg/1n7IL2, anti-pressure 250k (j/TILIIL2), it can have several times the strength of conventional ferrite magnets and alnico magnets, and can also be cut. It can have a certain degree of toughness.

In addition, with conventional ferrite magnets and alnico magnets,
In order to achieve anisotropy, molding in a magnetic field and heat treatment in a magnetic field are required, so multi-pole magnetization with anisotropy in the diametrical direction is extremely difficult. However, anisotropic manganese/aluminum magnets can be made anisotropic in all diametrical directions by warm upsetting molding without a magnetic field, so there is no limit to the number of poles. radial multipole magnetization is possible.

In addition, the specific gravity is light at approximately 5.1, and the temperature coefficient of magnetic flux is approximately 0.
It is as small as 1%/'c and has excellent heat resistance, weather resistance, and heat shock resistance.

In Figure 4, the rotor magnet of the generator is 12 mm in the diameter direction.
Although an example of a polarized anisotropic manganese aluminum magnet rotor has been shown, it goes without saying that the number of poles can be further increased.

It is also possible to use manganese aluminum magnets with axial anisotropy as rotor magnets for multipole magnetization, and multiple permanent magnets can be mounted around the rotating shaft by methods such as press-fitting. It can also be used to construct a rotor.

As described above, according to the present invention, by using a generator whose rotor is an anisotropic manganese aluminum magnet magnetized with multiple poles in the diametrical direction, it is possible to generate large output power even at low speed rotation, and the speed can be increased. Mechanism becomes unnecessary/necessary.

In addition, because the rotor magnet has high mechanical strength and high toughness, even when the rotation speed increases due to strong winds, etc.
The rotor is strong and safe.

In addition, it is possible to rationalize assembly by press-fitting the shaft to the rotor magnet.

In addition, since the rotor magnet is lightweight and an air-core winding stator is used as the stator, the starting torque is low.
No clutch etc. required.

In addition, since the air-core winding part is used as a stator and is not rotated, there is no damage to the winding part due to high-speed rotation, and the structure is easy to manufacture, and brushes are not required.
It has a long lifespan.

Furthermore, as a rotor magnet, anisotropic manganese with a large coercive force (BHc) is used. Since aluminum permanent magnets are used, there is no need for assembly and magnetization as with conventional alnico magnets, simplifying the assembly process.

As a generator, it is possible to reduce the weight and size, and there is no need for a transmission mechanism such as a clutch or a speed increaser, so in the case of wind power generation, for example, the direction can be easily changed depending on the direction of the wind, and responsiveness is good.

Therefore, maintenance is easy, long life and economical power generation can be achieved, and there is a great effect in terms of resource saving.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a wind power generator according to an embodiment of the present invention, FIG. 2 is an external perspective view of the main parts thereof, and FIGS. 3 and 4 are sectional views of the generator. 1... Propeller (fluid prime mover), 2... Rotating shaft, 1
... Generator, 8... Constant voltage device, 9... Storage battery,
DESCRIPTION OF SYMBOLS 10... Load, 21... Rotating shaft, 22... Rotor, 23... Stator.

Claims (1)

[Scope of Claims] 1. A fluid prime mover that converts fluctuating fluid energy such as wind power and waves into rotational force of mechanical energy, and a rotor that is rotated by the rotational force of this prime mover and converts mechanical energy into electrical energy. It is equipped with a generator and a power stabilization circuit that charges electricity generated by the generator into a storage battery and supplies it from the storage battery to the load.The generator is made of anisotropic manganese. This generator has a diametrically multi-pole magnetized rotor made of aluminum-based permanent magnets and an air-core winding stator. A power generation device characterized by being directly connected to a rotating shaft. 2 Anisotropic manganese/aluminum permanent magnets are
6 8.0-7 3. Of %.・Manganese and
('/ioMn6.6)~(''/3Mn-2 2.
2) A special alloy containing wt% carbon and the balance aluminum. - The power generation device according to claim 1. 3. The power generation device according to claim 1 or 2, wherein the fluid prime mover is a wind prime mover that rotates by wind power.