Wind turbine generator set limit load control method under blade clamping condition
A wind turbine and extreme load technology, which is applied in the control of wind turbines, wind energy power generation, wind turbines, etc., can solve the problems of extreme load and aerodynamic imbalance of three blades in the transmission chain system.
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[0027] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0028] The present invention introduces the engine room displacement sensor signal into the unit pitch control process, and based on the vibration change of the engine room displacement, by adjusting the pitch rate of the remaining two blades, the vibration dynamic response of the unit can be effectively suppressed, thereby reducing the limit load . See the following formula:
[0029]
[0030] In the formula, M represents the mass matrix, C represents the structural damping and aerodynamic damping matrix in the vibration process, K represents the stiffness matrix, F represents the load, Respectively represent vibration acceleration, vibration velocity, vibration displacement. It can be seen from the formula that the suppression Can effectively reduce the load.
[0031] The wind turbi...
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