Controller, floating type wind driven generation unit and control method thereof

Abstract

The invention provides a controller, a floating type wind driven generation unit and a control method thereof. The controller comprises a signal acquisition unit, an angle judging unit and a pitch-control yawing unit. The signal acquisition unit is used for acquiring the current wind speed and the offset angle between the windward direction and the current wind direction. The angle judging unit is used for judging whether the offset angle reaches the preset angle threshold value or not. The pitch-control yawing unit is used for realizing pitch-control yawing if the angle judging unit judges that the offset angle reaches the preset angle threshold value and comprises an angle calculating subunit and a pitch-control processing subunit, wherein the angle calculating subunit is used for calculating pitch-control angle of blades of each wind driven generation unit according to the current wind speed, the pitch-control processing subunit generates pitch-control signals of the pitch-control angle and sends the signals to the corresponding wind driven generation units, so that pitch of the blades of the wind driven generation units is controlled and yawing of the floating wind driven generation unit is realized. According to the technical scheme, the pitch control operation is utilized for yawing of the wind driven generation units, so that power of yawing driving mechanisms of the wind driven generation units and structural size thereof are reduced greatly and cost is decreased.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, in particular to a controller, a floating wind power generating set and a control method thereof. Background technique [0002] With the development of the world economy, the human demand for energy continues to increase, and under the pressure of the depletion of non-renewable energy and environmental protection, green renewable energy has been greatly developed, especially wind energy. In recent years, with the massive development of land wind energy resources and the restrictions on the use of land wind energy, such as light and shadow pollution, noise pollution, etc., the development of wind energy resources has gradually shifted from land to sea. The development provides sufficient conditions for the development of offshore wind power. [0003] At present, the foundations of offshore commercial wind turbines are all fixed foundations, and the floating foundations are s...

AI Technical Summary

Problems solved by technology

[0008] Due to the high gravity and large load of the overall structure of the yaw turning mechanism, if a traditional electric yaw device (such as image 3 As shown), it is bound to require a large power yaw motor and reducer to drive, and the requirements for installation space and maintenance space are also very high, and the cost will be greatly increased

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