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Controllable two-stage flap extending system carried by blades of wind driven generator

A technology for wind turbines and control systems, which is applied to the control of wind turbines, wind turbines, and wind turbines that are in the same direction as the wind, can solve the problem that the implementation strategy cannot be taken into account.

Active Publication Date: 2020-09-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a controllable two-stage flap extension system carried by wind turbine blades, considering the protection of the blades and the problem that the control and implementation strategies under the working efficiency cannot be balanced , the controllable secondary flap extension system carried by the fan blades proposed by the present invention can flexibly protect and control the blades by intelligently controlling the extension flaps of the blades, while at the same time not affecting the working efficiency of the blades as much as possible

Method used

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  • Controllable two-stage flap extending system carried by blades of wind driven generator
  • Controllable two-stage flap extending system carried by blades of wind driven generator
  • Controllable two-stage flap extending system carried by blades of wind driven generator

Examples

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Embodiment 1

[0055] In this example, see Figure 1-Figure 14, a controllable two-stage flap extension system carried by wind turbine blades, comprising a retractable two-stage flap 5, a motor module 6, a transmission mechanism 60, a fixing frame 90 and a control system 100, the two The first-stage flap 5 and the motor module 6 are installed in the inner cavity of the wind turbine blade through the fixing frame 90, and the motor 50 in the motor module 6 is connected to drive the two-stage flap 5 through the transmission mechanism 60; the control system 100 is electrically connected to the motor 50, and then control the motor 50; the control system 100 is composed of an acceleration sensor 1 installed on the outer surface of the blade of the wind power generator and a wind speed sensor installed on the tower of the wind power generator, and the wind speed sensor is connected through a control unit 80 Control the motor 50; the control system 100 controls the motor 50 according to the wind spe...

Embodiment 2

[0057] This embodiment is basically the same as Embodiment 1, especially in that:

[0058] In this embodiment, first, the wind speed signal is detected by the sensor arranged on the surface of the blade, and when the wind speed meets the system start-up conditions, it is started, and the extended flaps that are fixed and limited on the fixed frame and the longitudinal fixed frame execute the outward extension of the blade. action. When the wind speed is greater than the minimum set value, the control unit outputs current to control the motor, and the motor rotates forward through the output box to drive the primary flap to extend. When the detected wind speed signal is greater than the maximum set value, the control unit continues to increase the current, and the motor performs further actions to control the extension of the secondary flaps, further increasing the length of the flaps, thereby increasing the wind resistance on the blades and reducing the blades. The vibration ...

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Abstract

The invention relates to a controllable two-stage flap extending system carried by blades of a wind driven generator. The system can achieve two-stage flap extending and comprises extending flaps, a fixing frame, a motor module, a driving frame, a protective frame, a fixing frame fixing device, a transverse fixing frame, a power supply and conversion module, a control unit, a strip electromagnet,a push frame, an output box and a motor fixing frame. A wind speed signal is detected through a sensor, and when the wind speed is larger than the minimum set value, the control unit drives a motor and a driving rod to push out the first-stage flap through an output box. When the detected wind speed signal is larger than the maximum set value, the control unit continues to increase the current topush the second-stage flap to extend, the length of the flaps is further increased, the wind resistance to the blades is increased, the load for vibrating the blades is reduced, and a protection effect on the blades is achieved. The protective frame is arranged to protect the driving rod, an optimal PID algorithm is selected for the control strategy, and the control unit and the power supply and conversion module are arranged on the transverse fixing frame.

Description

technical field [0001] The invention discloses a wind power generator device, in particular to a flap system installed inside a wind turbine blade, and also relates to a system capable of realizing secondary flap extension through motor control, which is applied to wind power generation equipment technology field. Background technique [0002] Wind turbine blades, as an important part of wind turbines, have become a research hotspot in recent years. With the development of wind turbines, the shape of the blades has gradually developed from relatively thick and short to more slender. The diameter of the mainstream wind turbine impeller has reached 80 meters, that is, the length of a single blade can reach 40 meters. As the blades become more and more slender, some new problems gradually become prominent, among which the aeroelastic stability of the blades is the most important one. Wind turbines are mainly divided into two types: vertical axis wind turbines and horizontal a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D7/02F03D7/04
CPCF03D1/0675F03D7/0224F03D7/0296F03D7/044F05B2270/32F05B2270/602Y02E10/72
Inventor 常林刘廷瑞王陈郑维伟徐瞿磊闫恪涛于瀛洁孙涛
Owner SHANGHAI UNIV
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