Intelligent flexible pitch-changing device for wind power generator

Abstract

The invention relates to a pitch-changing device, in particular to an intelligent flexible pitch-changing device for a wind power generator, and belongs to the technical field of wind power generation. The intelligent flexible pitch-changing device for the wind power generator comprises a wheel hub (1), a bracket (2), a fixed base I (3), rotary bodies (5) and a fixed base II (6); the bracket (2),the fixed base I (3) and the fixed base II (6) are arranged inside the wheel hub (1); the fixed base II (6) is fixedly connected with the lower end of the bracket (1); the fixed base I (3) is sleevedwith the bracket (2) and fixedly connected with the wheel hub (1); a bevel gear I (7) is fixed on the lower part of the bracket (2); a plurality of inertial energy storage mechanisms (4) are fixed onthe upper part of the bracket (2); the plurality of inertial energy storage mechanisms (4) are distributed uniformly along the outer edge of the bracket (2); and three rotary bodies (5) are arranged on the outer edge of the wheel hub (1) uniformly. The intelligent flexible pitch-changing device for the wind power generator has the advantages of high safe reliability, no hysteresis quality, high wind power generation efficiency and stable output power.

Description

technical field [0001] The invention relates to a pitch-changing device, in particular to an intelligent flexible pitch-changing device for a wind power generator, which belongs to the technical field of wind power generation. Background technique [0002] Wind energy is the clean energy that is closest to us, the most convenient to use, and has a huge storage capacity. The development and utilization of wind energy is a trend in the world. The governments of all countries attach great importance to it, put the wind energy industry in a very important strategic position, and introduced various preferential policies to encourage and guarantee the rapid development of the wind energy industry. Wind power has a history of more than 100 years in foreign countries, but only a short ten years in China. However, whether at home or abroad, the problem of limited overload of wind turbines under strong wind conditions has not been well resolved. The blades of the lower wind turbine w...

AI Technical Summary

Problems solved by technology

Wind power has a history of more than 100 years in foreign countries, but only a short ten years in China. However, whether at home or abroad, the problem of limited overload of wind turbines under strong wind conditions has not been well resolved. The blades of the lower wind turbine will generate strong wind loads, and the greater the power of the fan, the larger the blades, and the greater the wind load intensity, which will cause strong vibration of the fan, which will cause mechanical or fatigue damage. There are many consequences. The consequences are The strength and cost of the tower and unit must be greatly increased

Many wind turbine manufacturers have adopted braking devices, but most of them need to be repaired and replaced frequently, which increases a lot of maintenance costs, and the power generation efficiency is low. Some manufacturers also use variable pitch angle control technology, which has a certain effect. However, the clock of the control system has a lag, and the wind conditions of nature are ever-changing. In case of bad weather, it still cannot play a good role.

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