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Method of wind turbine yaw angle control and wind turbine

A wind turbine, yaw angle technology, applied in wind turbine yaw angle control, wind turbine field, can solve problems such as long-term operation, regular inspection of resistance strain gauges, etc.

Inactive Publication Date: 2014-03-19
MITA TEKNIK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Likewise, resistance strain gauges require periodic inspection and long-term operation where harsh conditions can affect the efficiency and accuracy of such tracking systems

Method used

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  • Method of wind turbine yaw angle control and wind turbine
  • Method of wind turbine yaw angle control and wind turbine
  • Method of wind turbine yaw angle control and wind turbine

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Experimental program
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Embodiment Construction

[0037] figure 1 A wind turbine according to the invention for implementing the method according to the invention is schematically shown, the wind turbine comprising a tower 1 on which is mounted a nacelle 2 rotatable about a vertical axis, and a rotor shaft 3, in the present In said embodiment of the invention, the rotor is rotatable about a horizontal axis and is formed and mounted in the nacelle 2 by three blades for converting wind energy into rotational motion of the rotor shaft. Typically, the rotor shaft axis is offset from the wind direction W by an angle α. A generator 5 is mechanically connected to the rotor shaft 3 . To control the yaw angle of the rotor, the wind turbine is equipped with a blade position sensor 6, a yaw controller 7, and a nacelle yaw drive 2 (yaw actuator 8) integrated in a closed-loop automatic control.

[0038] The WT rotor yaw control method is based on the non-contact measurement of the current parameters of the wind turbine induction genera...

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Abstract

The present invention relates to the wind power engineering and to the method of controlling a yaw angle of the wind turbine equipped with a horizontal rotor shaft as well as to the wind turbine for implementing the method. According to the method of the present invention, the time difference between the time moments when the rotor blades are in the lower vertical position, the said time moments derived from the reference signal of the sensor connected to the rotor shaft, and the time moments when the blades are on one line with the wind direction and the tower, the said time moments derived from the periodic signal of the spurious amplitude modulation generated by the AC generator and caused by aerodynamic interaction between the blades and the tower, is used as the indication of actual position of the wind turbine rotor relative to the wind direction. The wind turbine of the present invention comprises a yaw controller including the functional units suitable for generating a control signal for rotating a nacelle of wind turbine based on the given time difference in order to compensate the existing yaw error.

Description

technical field [0001] The invention relates to wind engineering and to a method of yaw angle control of a wind turbine equipped with a horizontal rotor shaft, and to a wind turbine controlled by such a method. Background technique [0002] Wind power engineering is the most dynamically developed among the most promising directions for the use of renewable energies and has become a competitive player in the market for power generation. [0003] Most modern wind turbines (WT) have three bladed rotors with a horizontal rotor shaft. Such a turbine requires some mechanism for pointing the rotor towards the wind and a corresponding yaw controller. The yaw control error is determined as the angle between the actual direction of the rotor axis and the wind direction. To achieve maximum conversion of kinetic wind energy, the yaw control error of the wind turbine (WT) is zero. [0004] During yaw control, the nacelle of the wind turbine (WT) rotates around the vertical axis to min...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02F03D7/04
CPCF03D7/0204F03D9/002Y02E10/723F03D7/042F03D7/02F03D9/25Y02E10/72F03D17/00
Inventor 维克托·米哈伊利申
Owner MITA TEKNIK
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