CN202768278U - Self-steering wind driven generator - Google Patents

Abstract

The utility model relates to the field of generators, in particular to a wind power generator. A self-steering wind power generator, the nacelle is installed on the tower through a hinge shaft, the rotor is hinged in the nacelle, the stator cover is outside the rotor, the stator is fixedly connected to the inner wall of the nacelle, and there is a certain gap between the stator and the rotor. The gap is coaxially arranged, and the shaft center of the rotor is fixedly equipped with a rotating shaft. The blades are fixed and installed on the rotating shaft in a total of several circumferential uniform distributions. The wind direction measuring device and the driving fan are installed outside the cabin, and there are also a controller and a fan in the cabin. The clutch is used to drive the fan to connect the articulated shaft between the tower and the nacelle, the output end of the wind direction measuring device is connected to the controller, and the controller controls the connection of the clutch. In the utility model, after the wind direction is measured by the wind direction measuring device, the controller determines whether to adjust the orientation of the nacelle; the movement of the nacelle is driven by a fan driven by the wind, without using electric power, and the power generation efficiency of the wind power generator is improved.

Description

self-steering wind turbine

technical field

The utility model relates to the field of generators, in particular to a wind power generator.

Background technique

It is a power machine that converts wind energy into mechanical work, also known as a windmill. Broadly speaking, it is a thermal energy utilization engine that uses the sun as the heat source and the atmosphere as the working medium. Wind power utilizes natural energy.

The principle of wind power generation is to use the wind to drive the blades of the windmill to rotate, and then increase the speed of rotation through the speed increaser to drive the generator to generate electricity. According to the current windmill technology, electricity can be generated at a breeze speed of about three meters per second. Wind power is becoming a craze around the world because it has no fuel issues and doesn't produce radiation or air pollution. Wind power is very popular in Finland, Denmark and other countries; my country is also vigorously promoting it in the western region.

Existing wind generators are mainly composed of nose, swivel, empennage and blades. Every part is very important, and the functions of each part are: the blades are used to receive wind force and convert it into electrical energy through the nose; the empennage makes the blades always face the direction of the wind to obtain the maximum wind energy; The function of the empennage to adjust the direction; the rotor of the nose is a permanent magnet, and the stator winding cuts the magnetic field lines to generate electric energy. Due to the unstable wind direction, the wind generator needs to continuously turn according to the direction of the wind. The steering of the existing wind generator is driven by an independent motor to rotate the nose, which requires an additional power source and reduces the power generation efficiency.

Contents of the invention

The technical problem to be solved by the utility model is to provide a self-steering wind generator. After the wind generator measures the wind direction through the wind direction measuring device, the controller determines whether to adjust the orientation of the cabin; the movement of the cabin is driven by a fan driven by wind, It does not need to use electricity, which improves the power generation efficiency of the wind turbine.

The utility model is realized in the following way: a self-steering wind power generator comprises a tower frame, a nacelle, a stator, a rotor and blades, the nacelle is installed on the tower frame through a hinged shaft, the rotor is hinged in the nacelle, the The stator is covered outside the rotor, and the stator is fixedly connected to the inner wall of the nacelle. There is a certain gap between the stator and the rotor and is coaxially arranged. The shaft center of the rotor is fixedly equipped with a rotating shaft. A wind direction measuring device and a driving fan are also installed outside the nacelle, and a controller and a clutch are also arranged in the nacelle, and the driving fan is driven to connect the articulated shaft between the tower and the nacelle through the clutch, and the output end of the wind direction measuring device is connected to the control The controller is connected, and the controller controls to connect the clutch.

A gearbox is also arranged between the clutch and the hinge shaft.

The stator includes a stator frame, a stator core and a stator winding. The stator frame is fixedly installed in the nacelle through a machine base. The stator core is an annular iron core, and the stator core is fixedly installed on the stator frame. Above, the stator winding is set on the stator core.

The rotor includes a rotor frame, a rotor yoke and permanent magnet poles, the rotor frame is fixedly installed on the rotating shaft, and the rotating shaft is hinged in the nacelle through the frame, the rotor yoke and the permanent magnet poles are ring-shaped, and the rotor magnet The yoke is fixedly set outside the rotor frame, and the permanent magnet pole is fixedly set outside the rotor yoke.

The several blades are uniformly distributed in the circumferential direction of the hub and fixedly installed on the rotating shaft.

After the self-steering wind generator of the utility model measures the wind direction through the wind direction measuring device, the controller determines whether to adjust the orientation of the nacelle; the movement of the nacelle is driven by a fan driven by wind, without using electric power, and the power generation efficiency of the wind generator is improved.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model self-steering wind power generator.

In the figure: 1 tower, 2 engine room, 31 stator frame, 32 stator core, 33 stator winding, 41 rotor frame, 42 rotor yoke, 43 permanent magnetic pole, 5 blades, 6 rotating shaft, 7 base, 8 hub , 9 wind direction measuring device, 10 drive fan, 11 controller, 12 clutch.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Example 1

As shown in Figure 1, a self-steering wind generator comprises a tower 1, a nacelle 2, a stator, a rotor and blades 5, the nacelle 2 is mounted on the tower 1 through a hinge shaft, and the rotor is hinged in the nacelle, The stator cover is outside the rotor, and the stator is fixedly connected to the inner wall of the nacelle 2. There is a certain gap between the stator and the rotor and is arranged coaxially. On the rotating shaft 6, a wind direction measuring device 9 and a driving fan 10 are installed outside the nacelle 2, and a controller 11 and a clutch 12 are also arranged in the nacelle 2, and the driving fan 10 is driven to connect the tower 1 and the nacelle 2 through the clutch 12. The output end of the wind direction measuring device 9 is connected to the controller 11 , and the controller 11 controls the connection of the clutch 12 .

In order to enable the driving fan 10 to smoothly drive the nacelle 2 to rotate, a gearbox is also arranged between the clutch 12 and the hinge shaft.

The utility model can be further described as, the stator includes a stator frame 31, a stator core 32 and a stator winding 33, and the stator frame 31 is fixedly installed in the nacelle 2 through the frame 7, and the stator core 32 is an annular iron core, the stator iron core 32 is fixedly installed on the stator frame 31 , and the stator winding 33 is embedded on the stator iron core 32 .

The utility model can be further described as, the rotor includes a rotor frame 41, a rotor yoke 42 and a permanent magnet pole 43, the rotor frame 41 is fixedly mounted on the rotating shaft 6, and the rotating shaft 6 is hinged to the nacelle 2 through the frame 7 Inside, the rotor yoke 42 and the permanent magnet pole 43 are ring-shaped, the rotor yoke 42 is fixedly set outside the rotor frame 41 , and the permanent magnet pole 43 is fixedly set outside the sub-yoke 42 .

In this embodiment, in order to securely install the blades 5 on the rotating shaft 6 and facilitate disassembly and maintenance, the plurality of blades 5 are uniformly distributed and fixed on the rotating shaft 6 through the hub 8 in the circumferential direction.

When generating electricity, the wind direction measured by the wind direction measuring device 9 is suitable for the blade 5 to rotate for power generation, the controller 11 controls the clutch 12 to disconnect, and the fan 10 is driven to idle under the wind force, and the nacelle 2 will not adjust the direction; When the blade 5 rotates to generate electricity, the controller 11 controls the clutch 12 to close, and the fan 10 is driven to rotate under the wind to drive the nacelle 2 to rotate and adjust the direction to improve the power generation efficiency.

Claims (5)

1. A kind of self-steering wind-driven generator, comprises tower (1), nacelle (2), stator, rotor and blade (5), and described nacelle (2) is installed on the tower (1) by hinged shaft, so The rotor is hinged in the nacelle, the stator is covered outside the rotor, the stator is fixedly connected to the inner wall of the nacelle (2), the stator and the rotor are coaxially arranged with a certain gap, and the shaft center of the rotor is fixedly equipped with a rotating shaft (6), The blades (5) have several circumferentially evenly distributed and fixedly installed on the rotating shaft (6), and are characterized in that: a wind direction measuring device (9) and a driving fan (10) are also installed outside the cabin (2), and the cabin (2 ) also has a controller (11) and a clutch (12), the drive fan (10) drives the hinged shaft connecting the tower (1) and the nacelle (2) through the clutch (12), and the wind direction measuring device The output terminal of (9) is connected with the controller (11) which controls the connection of the clutch (12). 2. The self-steering wind generator according to claim 1, characterized in that: a gearbox is further arranged between the clutch (12) and the hinge shaft. 3. The self-steering wind generator according to claim 1 or 2, characterized in that: the stator includes a stator frame (31), a stator core (32) and a stator winding (33), and the stator machine Frame (31) is fixedly installed in the nacelle (2) by machine base (7), and described stator iron core (32) is annular iron core, and stator iron core (32) is fixedly installed on the stator frame (31), The stator winding (33) is embedded on the stator core (32). 4. The self-steering wind power generator according to claim 1 or 2, characterized in that: the rotor comprises a rotor frame (41), a rotor yoke (42) and a permanent magnet pole (43), and the rotor machine The frame (41) is fixedly installed on the rotating shaft (6), and the rotating shaft (6) is hinged in the nacelle (2) through the machine base (7). The rotor yoke (42) and the permanent magnet poles (43) are both annular, and The yoke (42) is fixedly set outside the rotor frame (41), and the permanent magnet pole (43) is fixedly set outside the rotor yoke (42). 5. The self-steering wind power generator according to claim 1 or 2, characterized in that: the plurality of blades (5) are uniformly distributed in the circumferential direction of the hub (8) and fixedly installed on the rotating shaft (6).