Pitch driving mechanism of wind power generating set, pitch changing method and wind generating set

Abstract

The embodiment of the invention provides a variable-pitch drive mechanism of a wind generating set, a variable-pitch method and the wind generating set. The variable-pitch drive mechanism is used fordriving blades of the wind generating set, and root parts of the blades are connected with connecting shafts; hobbing gears are arranged on the connecting shafts; and the variable-pitch drive mechanism drives the hobbing gears through fluted discs, so that the blades synchronously change pitch. According to the variable-pitch drive mechanism of the wind generating set, the variable-pitch method and the wind generating set provided by the embodiment of the invention, the fluted discs can simultaneously control the blades to synchronously change pitch, so that the structure is simple; and the structure of a hub of the wind generating set is cancelled, so that the blade mechanisms of the wind generating set are more reasonable, the pitch varying effect is better, and the service life of the wind generating set is prolonged.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a pitch-changing driving mechanism of a wind power generator set, a pitch changing method and a wind power generator set. Background technique [0002] A wind turbine usually consists of a nacelle, a tower, and an impeller. The impeller generally has three blades, and the angle between the three blades is 120 degrees. In order to adjust the windward area of ​​the blades to meet the speed and power requirements under different wind speeds, it is necessary to adjust the pitch angle of the blades. Because the three blades point in different directions, the pitch of the existing wind turbine blades is usually each blade is individually pitched, that is, each blade needs a set of independent pitch mechanism, and then the three blades coordinate actions, thereby Realize the same pitch angle of the three blades. In this way, it is necessary to install a set of pitch-cha...

AI Technical Summary

Problems solved by technology

[0003] In view of the technical problems described above, the embodiments of the present invention provide a pitch-changing drive mechanism, a pitch-changing method, and a wind-driven generator set for a wind-driven generator set, which solve the technical problems of complex structures and high manufacturing costs of the existing wind-driven generator-set pitch-changed mechanism

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