Automatic yawing control device for preventing overspeed of wind generating set

Abstract

The invention discloses an automatic yawing control device for preventing overspeed of a wind generating set. The automatic yawing control device comprises a base, a support pipe is connected to the top of the base, a driven rotating disc is rotatably connected to the top end of the support pipe, a case is connected to the driven rotating disc, a generator is arranged in the case, a mounting headis arranged at the front part of the case, and blades are arranged on the mounting head; a protective shell is connected to the bottom of the case, a motor rotating speed detector, a processor and a first controller are arranged in the protective shell, a mounting shell is connected to the support pipe, a servo motor is arranged in the mounting shell, the servo motor is connected with a gear through a third rotating shaft, the gear is in engaged connection with a gear ring, and a driving rotating disc is mounted at the inner side of the gear; and the driving rotating disc is connected with thedriven rotating disc through a fixing rod. When the rotating speed of the generator exceeds the maximum rotating speed, the servo motor is controlled to be started through the first controller, and the servo motor drives the case to rotate through the third rotating shaft, the gear, the gear ring, the driving rotating disc, the fixing rod and the driven rotating disc to adjust the direction of the blades.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to an automatic yaw control device for preventing wind power generators from overspeeding. Background technique [0002] In recent years, wind power in emerging markets has developed rapidly. Under the background of national policy support and tight energy supply, China's wind power, especially wind power equipment manufacturing industry has also risen rapidly, and has become the most active place for wind power in the world. In 2006, 9% of the global wind power funds were invested in China, with a total amount of 1.62 billion euros (about 16.27 billion yuan). In 2007, China's wind power installed capacity ranked fifth in the world. "China's Wind Power Generation Panoramic Evaluation and Development Trend Research Report" analyzes China's huge wind power market and cheap labor costs, attracting a large number of foreign wind power giants to set up factories in China,...

AI Technical Summary

Problems solved by technology

[0004] At present, most wind turbines adopt the pitch adjustment operation mode. When the pitch system of the unit fails and cannot be retracted in time (generally, the pitch angle will be around 0 degrees), the wind turbine is in the windward state, and the speed of the wind turbine will decrease. Higher and higher will cause certain damage to the generator. If the speed of the wind turbine is too fast, it will eventually cause the unit to fly, and accidents such as tower collapse and fire will occur, and the safety is low.

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