Trailing edge flap control method for relieving load fluctuation of wind wheel of floating type wind turbine

A control method and technology of wind turbines, applied in the control of wind turbines, engine control, wind turbines, etc., to achieve the effects of improving quality, reducing fatigue, and reducing wind wheel load fluctuations

Active Publication Date: 2019-03-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology

However, under the influence of ocean currents and turbulent winds, the floating wind turbine platform will periodically swing in a certain degree of freedom. This phenomenon will have a great negative impact on the stability of the wind turbine load.

Method used

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  • Trailing edge flap control method for relieving load fluctuation of wind wheel of floating type wind turbine
  • Trailing edge flap control method for relieving load fluctuation of wind wheel of floating type wind turbine
  • Trailing edge flap control method for relieving load fluctuation of wind wheel of floating type wind turbine

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] This method is used to slow down the load fluctuation of the wind turbine caused by the movement of the floating wind turbine platform, so the main input of the control program is the six degrees of freedom of the floating platform (including surge, sway, and heave) measured by the inertial measurement unit. , pitch, roll, and yaw) motion data, and then calculate the relative velocity of the airflow at the blade flap position, including the axial relative velocity and the tangential relative velocity, by setting the flap deflection angle relative ...

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Abstract

The invention relates to a trailing edge flap control method for relieving load fluctuation of a wind wheel of a floating type wind turbine. The method is used for relieving the power fluctuation caused by the floating type wind turbine platform movement; and according to six degrees of freedom (including longitudinal swinging, transverse swinging, vertical swinging, longitudinal shaking, transverse shaking and vertical shaking) of the platform movement, and measured data of other necessary parameters, the deflection angle of the wind turbine blade flap is determined, wherein the correspondingrelation between the six degrees of freedom and the relative speed (including the axial relative speed and the tangential relative speed) of a trailing edge flap, the corresponding relation between the axial relative speed and the deflection angle of the flap and the corresponding relation between the tangential relative speed and the deflection angle of the flap are involved. Through the adoption of the flap control method, the power fluctuation of the wind turbine caused by the platform movement can be effectively reduced, and the method has a good application prospect on the floating typeoffshore wind turbine.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a control method for a trailing edge flap of a floating wind turbine blade. Background technique [0002] In the context of the depletion of global fossil energy and the deteriorating environmental problems, wind energy has attracted widespread attention as the most accessible clean energy. Offshore wind power has the characteristics of high wind energy density, high annual utilization hours, and close distance from the wind power load center. It is an important direction for the development of wind power in the future. Offshore wind power technology has matured at this stage, but with the continuous development of wind power utilization in deep water areas, the economy and reliability of fixed foundations have declined significantly, while the advantages of floating foundations have emerged. However, under the influence of ocean currents and turbulent ...

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Application Information

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IPC IPC(8): F03D7/04
CPCF03D7/0232F03D7/042F05B2270/1033F05B2270/32F05B2270/30F05B2270/328Y02E10/72F05B2240/93
Inventor 钟伟冯俊恒许波峰王同光
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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