Automatic speed regulation and smooth rate apparatus for wind power generation system

Abstract

The invention relates to an automatic speed regulating and stabilizing device for a wind generator system. A planetary gear driving mechanism consists of a planetary carrier, an internal gear, a planetary gear and a sun gear; a stepless gearshift mechanism consists of pulley cones, a left screw pair and a right screw pair and adjustment levers; and an electrical screw drive mechanism consists of a left screw pair, a right screw pair, and a servo-actuator. The planetary gear is engaged with the sun gear and the internal gear simultaneously; the sun gear and the pair of the pulley cones connected with the two adjustment levers are arranged on the same driving shaft, and another pair of pulley cones connected with the two adjustment levers are coaxially arranged on an output shaft, and the two pairs of the pulley cones are connected through a cog belt; the left screw pair and the right screw pair are connected with the two adjustment levers respectively, and are connected with the servo-actuator. Through automatic speed regulation, the wind power of a fixed pitch keeps the generator speed unchanged while allowing the rotor speed to ascend with the increasing of the wind speed, thereby optimizing the tip-speed ratio to make the wind generator system which operates in the rated wind speed obtain larger wind energy.

Description

technical field [0001] The invention relates to an automatic speed regulating and stabilizing device, in particular to an automatic speed regulating and stabilizing device for wind power generation. Background technique [0002] At present, compared with variable-pitch wind turbines, when the fixed-pitch wind turbines operate above the rated wind speed, the performance of the generators will decline due to the fact that the blade pitch angle and the generator speed cannot be automatically adjusted. , the utilization rate of wind energy is greatly reduced. [0003] When the fixed-pitch wind turbine is running above the rated wind speed, if the automatic speed regulation is used, the speed ratio of the blade tip can be optimized while allowing the speed of the wind rotor to increase with the increase of wind speed while keeping the speed of the generator constant. When the wind power generating set is operated above the rated wind speed, it can still obtain relatively large w...

AI Technical Summary

Problems solved by technology

[0002] At present, compared with variable-pitch wind turbines, when the fixed-pitch wind turbines operate above the rated wind speed, the performance of the generators will decline due to the fact that the blade pitch angle and the generator speed cannot be automatically adjusted. , the utilization rate of wind energy is greatly reduced

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