Downwind pitch-controlled wind-driven generator

Abstract

The invention designs a downwind pitch-controlled wind-driven generator, which mainly comprises a hub, a main shaft, a generator, a chassis and a base, a synchronizing disk is arranged in the hub, and is connected with a blade-connecting rotating bearing through two butted knuckle bearings, one end of a reciprocating rod arranged in the main shaft is connected with the synchronizing disk, the other end of the reciprocating rod is connected with a shifting sleeve, and an electric push rod is arranged in the chassis, and is connected with the shifting sleeve. The downwind pitch-controlled wind-driven generator is mainly applied to medium and small-sized fans, a pitch-controlling mechanism of the downwind pitch-controlled wind-driven generator can simultaneously control three blades to change pitches, and can keep the amplitudes of pitches in consistency, and under harsh conditions such as a hurricane, the pitch-controlling mechanism can control the pitches of the blades to a certain negative angle, so that the downwind pitch-controlled wind-driven generator can be shut down and kept in the shutdown state. The chassis can be rotated relative to the base by 360 degrees in order to be adapted to each wind direction. In addition, the downwind pitch-controlled wind-driven generator is also provided with an anemoscope and a controller, and consequently, the reaction is more sensitive, so that the downwind pitch-controlled wind-driven generator can be adapted to suddenly changed wind direction and wind speed.

Description

technical field [0001] The invention relates to the field of wind power generators, in particular to a downwind wind power generator suitable for medium and small wind turbines. Background technique [0002] At present, large wind turbines have basically used variable pitch and speed adjustment, showing the advantages of stable power output and more reliable operation of wind turbines. Because the blades on the small fan are relatively small, the force generated by the blades under the action of the wind is relatively small, and the centrifugal hammer cannot be twisted, so that the pitch cannot be achieved. Therefore, there are many wind turbines with rudder yaw in the upwind direction of small wind turbines, not only the output is unstable, but also the wind turbines have many faults caused by poor speed limit effect under strong winds, and the operation is unreliable. Contents of the invention [0003] The object of the present invention is to provide a simple in struct...

AI Technical Summary

Problems solved by technology

Because the blades on the small fan are relatively small, the force generated by the blades under the action of the wind is relatively small, and the centrifugal hammer cannot be twisted, so that the pitch cannot be achieved.

Therefore, there are many wind turbines with rudder yaw in the upwind direction of small wind turbines. Not only the output is unstable, but also the wind turbines have many faults caused by poor speed limit effect under strong winds, and the operation is unreliable.

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