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Electromechanical coordinating and restraining method of rotary spindle chattering by utilization of two-shaft tilt sensor

A rotating spindle and sensor technology, applied in the direction of machine/engine, wind engine control, engine, etc., can solve the problems that the wind turbine cannot reach the maximum wind energy capture speed, reduce the wind energy capture efficiency of the wind turbine, and achieve reverse electric braking The torque is smooth and easy to control, the adjustment speed is fast, and the work efficiency is high

Inactive Publication Date: 2015-02-11
JIANGSU UNIV
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Problems solved by technology

[0008] 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 coordinating and restraining method of rotary spindle chattering by utilization of two-shaft tilt sensor
  • Electromechanical coordinating and restraining method of rotary spindle chattering by utilization of two-shaft tilt sensor
  • Electromechanical coordinating and restraining method of rotary spindle chattering by utilization of two-shaft tilt sensor

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Embodiment Construction

[0053] 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:

[0054] S100, start.

[0055] S110. Obtain the vertical inclination of the rotating main shaft in real time.

[0056] 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.

[0057] S120. Calculating the vibration intensity K of the rotating main shaft v .

[0058] The tremor intensity is defined as, K v = α x 2 ...

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Abstract

The invention discloses an electromechanical coordinating and restraining method of rotary spindle chattering by the utilization of a two-shaft tilt sensor. The method includes the following steps: acquiring the perpendicular tilt angle of a rotary spindle in real time, calculating chattering intensity in the two orthogonal directions in the horizontal cross section of the rotary spindle, and the optimal rotating speed of a wind driven generator tracking a target at the maximum power, making analysis to determine the expected rotating speed of the wind driven generator, driving the rotating speed of the wind driven generator to reach the expected rotating speed rapidly by a rotating speed inner ring controller, when the chattering intensity of the spindle exceeds a preset maximum safety control threshold value, actuating the electric reverse braking function of the rotating speed inner ring controller and an electromagnetic brake locking mechanism of the rotating spindle, and acquiring the perpendicular tilt deflection angle values a<x> and a<y> through the two-shaft tilt sensor installed on a static component at the top end of the rotating spindle. With the method, the current chattering intensity of the spindle can be calculated in real time and the spindle chattering can be restrained, so that while a wind turbine is kept stable mechanically, the highest wind power capture efficiency is acquired as far as possible.

Description

[0001] This application is a divisional application with application number: 201210049193.0, application date: 2012.2.29, titled "Mechatronic Coordination Suppression Method and Device for Vibration of Rotating Main Shaft of Vertical-axis Wind Turbine". technical field [0002] 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 [0003] 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. [0004] Structurally speaking, the vertical rotating main shaft structure of the vertical axis wind turbine belongs to the mast structure in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/06
CPCY02E10/74
Inventor 吴爱华赵不贿吴国庆茅靖峰张旭东曹阳周井玲肖龙雪
Owner JIANGSU UNIV
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