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System and method for synchronously controlling fatigue loading of wind turbine blades based on multiple exciters

A wind turbine blade and fatigue loading technology, which is applied in the direction of mechanical oscillation control, control/regulation system, electric controller, etc., can solve the problem of low vibration excitation ability, improve adaptability and robustness, improve accuracy and The effect of excitation ability

Active Publication Date: 2018-10-30
NANCHANG INST OF TECH
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Problems solved by technology

[0006] With the gradual development of blades towards high power, the problem of low vibration excitation capacity is solved. Multi-vibrator fatigue loading is carried out synchronously. The exciters are networked to realize the electronic flexible connection between the exciters. The invention provides a multi-exciter synchronous fatigue loading control system for wind turbine blades

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  • System and method for synchronously controlling fatigue loading of wind turbine blades based on multiple exciters
  • System and method for synchronously controlling fatigue loading of wind turbine blades based on multiple exciters
  • System and method for synchronously controlling fatigue loading of wind turbine blades based on multiple exciters

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Embodiment Construction

[0032] In order to deepen the understanding of the present invention, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments. The embodiments described in this specification are only used to explain the present invention, and are not intended to limit the present invention.

[0033] figure 1 As shown, the wind turbine blade multi-exciter synchronous fatigue loading control system of the present invention, its hardware includes a host computer and a lower computer, the upper and lower computers are based on Ethernet communication, and the upper computer has a frequency search and tracking module, a sensor detection module , data recording module and Labview communication module, connected to the laser rangefinder through RS485, and based on Ethernet communication with the strain tester, the upper computer is a man-machine interface written by Labview, the main functions include operating parameter setting and display, and...

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Abstract

The invention discloses a system for synchronously controlling fatigue loading of wind turbine blades based on multiple exciters. Based on an electric driving inertial excitation device, the multipleexciters can improve the load precision and excitation capacity of fatigue tests. In order to eliminate the coupling effect in the loading process of the wind power blades based on the exciters, basedon a virtual master control adjacent and cross coupling structure, an exciter synchronous PID control algorithm is designed, and the vibration amplitude of the blades is controlled through self adaptation. A motion controller is adopted for realizing a complex control rule and synchronous control over fatigue loading and improving the self-adaptivity and robustness of the control system. Based onmodel-free control, the control algorithm is used in a wind power blade test site through a model machine and can make the exciters rapidly follow to maintain a good synchronous state for loading, fluctuations of a phase difference between the exciters are quite small, the vibration amplitude of the blades is stable, stable and effective loading is realized for the wind power blades, a good effect is realized, and high popularization values are obtained.

Description

technical field [0001] The invention relates to a loading control system, in particular to a multi-vibrator synchronous fatigue loading control system for wind turbine blades. [0002] The invention also relates to a synchronous fatigue loading control method for multi-vibrators of wind turbine blades. Background technique [0003] The blade is a key component of a wind turbine, and its fatigue performance test is a necessary part of putting it into use. Due to the relatively low requirements for test equipment and test costs, the domestic blade fatigue loading test mainly uses a single exciter, which is used for targeted testing of dangerous areas with a small fatigue safety factor. As the scale of wind turbine blades increases, the single-point excitation method not only fails to meet the requirements in terms of test accuracy, but also needs to be improved in excitation capacity. Using multiple exciters to drive and load wind turbine blades has become a new development d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D19/02G05B11/42G01M7/02
CPCG05B11/42G05D19/02G01M7/00Y02E10/72
Inventor 廖高华刘嘉
Owner NANCHANG INST OF TECH
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