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Electromechanical coordination inhibiting method for chattering of rotary spindle of vertical axis wind machine

A technology of rotating the main shaft and wind turbine, applied in the control of wind turbines, wind turbines, machines/engines, etc. It can solve the problems of reducing the wind energy capture efficiency of wind turbines and the inability of wind turbines to reach the maximum wind energy capture speed, etc., and achieve smooth torque Easy to control, fast adjustment speed, good real-time effect

Inactive Publication Date: 2013-08-21
NANTONG UNIVERSITY
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Problems solved by technology

[0007] However, the existing method of "suppressing the free vibration of the tower by reducing the speed of the wind turbine" is too conservative. Maximum wind capture speed

Method used

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  • Electromechanical coordination inhibiting method for chattering of rotary spindle of vertical axis wind machine
  • Electromechanical coordination inhibiting method for chattering of rotary spindle of vertical axis wind machine
  • Electromechanical coordination inhibiting method for chattering of rotary spindle of vertical axis wind machine

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Embodiment Construction

[0052] refer to figure 1 , which is a flow chart of an embodiment of the electromechanical coordination suppression method for vibration of the rotating main shaft of a vertical axis wind turbine according to the present invention. This embodiment comprises the following steps:

[0053] S100, start.

[0054] S110. Obtain the vertical inclination of the rotating main shaft in real time.

[0055] The vertical inclination angle includes the inclination angle value α in the two orthogonal directions in the horizontal section of the main axis x and alpha y . The inclination angle value can be obtained by installing a two-axis inclination sensor on the stationary part at the top of the rotating spindle.

[0056] S120. Calculating the vibration intensity K of the rotating main shaft v .

[0057] The tremor intensity is defined as, K v = α x 2 ...

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Abstract

The invention discloses an electromechanical coordination inhibiting method and an electromechanical coordination inhibiting device for chattering of a rotary spindle of a vertical axis wind machine. The method comprises the following steps of: obtaining a vertical inclined angle of the rotary spindle in real time; calculating chattering intensity of the rotary spindle in two orthorhombic directions in a horizontal section and the best rotary speed of a wind driven generator under a largest-power tracking target; according to the chattering intensity of the rotary spindle, analyzing an expected rotating speed of the wind driven generator; driving the rotating speed of the wind driven generator to rapidly achieve the expected rotating speed by a rotating speed inner ring controller; when the chattering intensity of the rotary spindle exceeds the pre-set biggest safe regulation and controlling threshold value, starting an inverse electric braking function of the rotating speed inner ring controller and an electromagnetic braking mechanism of the rotary spindle, so as to rapidly reduce the rotating speed of the wind driven generator. According to the invention, the current chatteringintensity of the spindle can be measured in real time and the chattering of the spindle can be inhibited, so that the mechanical stability of the wind machine is kept and the highest wind energy capturing efficiency can be obtained as far as possible.

Description

technical field [0001] The invention relates to the field of mechatronics control of a wind power generating set, in particular to an electromechanical coordination intelligent suppression method and device for the vibration of the rotating main shaft of a vertical axis wind power machine. Background technique [0002] Except for the establishment of experimental wind farms in a few areas of the world, vertical axis wind turbines have not yet been widely promoted, but their superior aerodynamic performance has attracted more and more attention from researchers in various countries. [0003] Structurally speaking, the vertical rotating main shaft structure of the vertical axis wind turbine belongs to the mast structure in the towering structure. Since the main characteristics of towering structures are higher height and softer stiffness in the horizontal direction, horizontal loads cause large structural responses. In addition, in order to further improve the wind energy uti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/06
CPCY02E10/74
Inventor 吴国庆吴爱华茅靖峰张旭东曹阳周井玲肖龙雪
Owner NANTONG UNIVERSITY
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