JP2003193954A - Wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide, at a low cost, a small-size domestic wind power generator which obtains a practical output, is simple in constitution, obtains a larger output, is easily unloaded at maintenance, and easily takes out a power so as to prevent a permanent magnet for magnetic field from coming into contact with an armature at a gust. <P>SOLUTION: The armature is a double rotor which dispenses with a step-up gear and does not rotate, and equipped with an elevating device for the maintenance of the wind power generator in which the output is doubled. A roller is provided in order to prevent the permanent magnet for magnetic field from coming into contact with the armature. A horizontal shaft wind power generator mechanism is realized in which slip ring for taking out electric power is not necessary. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention aims to be a small-sized, low-priced upwind wind turbine generator of horizontal axis, which is small in size and has a large output for use in general households.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 7-174067 and Japanese Unexamined Patent Publication No. 5-23
The 1297 has a double rotor wind power generator, but both are large and expensive to use at home.

Maintenance and inspection is a work at a high place and cannot be easily performed.

[0004]

[PROBLEMS TO BE SOLVED BY THE INVENTION] The efficiency of a wind power generator is improved, and it is a practical product having a large output for its size. Since it is a double rotor and the change in magnetic flux is approximately doubled, the generated voltage is large, and the configuration without a gearbox reduces the cost.

To make maintenance and inspection easy. Also, when the typhoon approaches, the wind power generator can be easily lowered.

The armature 2 and the permanent magnets 16 of the field magnets 4A, 4B
It is necessary to keep the gap between and appropriately. The structure is as simple as possible and the cost is low.

It is necessary to take out the electric power generated by the armature 2 to the ground. The conventional rotating armature system requires a slip ring. In addition, the armature 2 is
The direction automatically follows the direction of the inflow of wind, but a slip ring device is also required to handle this.

[0008]

[Means for Solving the Problems] As shown in FIG. 1, the generator is of a fixed type in which the armature 2 does not rotate in order to simplify the structure. This eliminates the need for a slip ring device for taking out the generated electric power.

The armature 2 has a roller 15 as shown in FIG. 2, which prevents the permanent magnet 16 from coming into contact with the armature 2 when there is a sudden unbalanced change in wind speed.
However, the roller 15 and the field magnets 4A and 4B are not always in contact with each other. Eight or more rollers 15 are provided on the circumference of the armature 2.

The impeller is a double rotor having a right rotation 1A and a left rotation 1B, and the rotor field is a field magnet having a large number of permanent magnets 16 attached thereto, which is an energy-saving type that does not require an exciting current. As shown in Fig.-4, the output can be doubled for the same size by using a double rotor and properly twisting the blades. The blade has three wings.

The wind turbine generator is equipped with a pulley 5 and a wire winder 11 as an elevating device so that it can be easily lowered for maintenance and inspection or when a typhoon approaches. When lowering the wind power generator, the branch metal fitting 18 is loosened and the wind power generator is lowered by rotating the handle of the winder 11 in the direction in which the wire 9 is loosened.

The wire winder 11 is provided with a worm gear and a worm wheel to prevent abrupt rotation of the wind generator due to its own weight when descending the wind generator. Fig-3
Shows the state where the wind power generator is lowered.

When the wind power generator is raised, the wind power generator can be easily raised by performing the reverse operation. However, the upper limit stopper 7 protects it so as not to accidentally raise it too much.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The main pillar 8 has a hollow structure, inside which a wire 9 and an electric cable 10 pass. The electric cable 10 is a curl cord type, and withstands the twist of the wind power generator due to the change of the wind direction. It can also extend when the wind power generator descends.

AC power of varying frequency generated in the armature 2 is rectified by the diode 6 and converted into DC power.

The output is about 192 V DC and can be operated in parallel with the solar power generator. Especially at night, the inverter of the photovoltaic power generator is not operating, so this is effectively used to sell electricity.

【Example】

According to FIG. 1 and FIG.

[0018]

EFFECT OF THE INVENTION It is possible to provide a cheap wind power generator which can be expected to have a practical output with a small-sized wind power generator of a double rotor type having a fixed armature. The lifting device makes it easy to maintain and take measures when a typhoon approaches. It does not require a slip ring device, has a small number of parts, and is highly reliable.

[Brief description of drawings]

[Figure 1] Side view of a wind power generator

[Figure 2] Roller part

[Figure 3] Wind generator descent state

[Figure 4] Torsion of rotor blades

[Explanation of symbols]

1A clockwise impeller 1B counterclockwise impeller 2 armatures 3 main bearings 4A right rotation field 4B left rotating field 5 pulleys 6 spindles 7 upper limit stopper 8 main pillars 9 wires 10 electrical cables 11 wire winder 12 thrust bearing 13 radial bearing 14 tails 15 rollers 16 permanent magnets 17 coils 18 branch metal fittings

Claims (4)

[Claims] 1. A double rotor type wind power generator in which an armature does not rotate and a gearbox is not required. 2. The structure is such that the wind power generator can be easily lowered for maintenance and inspection. 3. A wind power generator equipped with a roller so that the field permanent magnet and the armature do not come into contact with each other when an abnormal force such as a gust is received. 4. A horizontal axis wind power generator that does not require a slip ring for extracting generated electric power.