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Method for solving unbalance fault of impellers of wind turbine generator

A technology for balancing faults and wind turbines, applied in the control of wind turbines, wind power generation, wind turbines, etc., to achieve the effects of high precision, easy implementation and simple principle

Inactive Publication Date: 2016-02-10
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a method for solving the unbalanced fault of the impeller of the wind turbine with simple principle, high precision and improved reliability and stability of the impeller.

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  • Method for solving unbalance fault of impellers of wind turbine generator
  • Method for solving unbalance fault of impellers of wind turbine generator
  • Method for solving unbalance fault of impellers of wind turbine generator

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] A method for solving the unbalanced fault of the impeller of the wind turbine set in the present invention is a counterweight type method for solving the unbalanced fault. The unbalanced faults of the impeller include mass unbalanced and aerodynamic unbalanced. These two unbalanced faults will eventually form an unbalanced acting moment on the impeller. The solution is to use 180% of the unbalanced acting moment o A counterweight of equal size is added to the phase to make the impeller reach a new balance state. The method of the present invention uses professional wind turbine dynamics software (ISIGHT program) to carry out high-precision modeling analysis, several blades are modeled according to the actual mass and the position of the center of mass, and the installation error angle of several blades is considered in the arti...

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Abstract

The invention discloses a method for solving unbalance fault of impellers of a wind turbine generator. The unbalance fault of the impellers is eliminated in a balance weight mode. The method comprises steps as follows: (1), a mounting error angle of a blade is taken as application parameters for aerodynamic non-balance, design parameters of the blade are taken as an evidence of modeling, and a blade model is formed; (2), the blade model obtained in the step (1), a fan transmission chain kinetic model and aerodynamic force required for a rated speed are used together to establish a whole fan kinetic analysis model; (3), the whole fan kinetic analysis model obtained in the step (2) is used for calculating a generator power curve, the obtained generator power curve and a power curve in the normal state are compared, and the optimum position of a balance weight required for unbalance fault of the impellers is found out. The method has the advantages of simple principle, high accuracy, capability of improving the reliability and the stability of the impellers and the like.

Description

technical field [0001] The invention mainly relates to the field of wind turbines, in particular to a method suitable for solving unbalanced faults of impellers of wind turbines. Background technique [0002] As an important part of a wind turbine, the impeller has a great impact on the safe and stable operation of the wind turbine. The unbalanced fault of the impeller is one of the main faults of the impeller. Icing of the blades or the loosening of the internal filling material of the blades under the action of centrifugal force and shifting towards the blade tips during the rotation process may cause the mass imbalance of the wind turbine, especially the capacity of the wind turbine is getting larger and the diameter of the impeller is getting bigger and bigger. Larger, the higher the tower height, the stronger the flexibility of the wind turbine, the unbalanced fault of the impeller will cause huge vibration of the overall structure of the wind turbine, and at the same t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50F03D7/00
CPCY02E10/72
Inventor 赵萍杨军李晓光肖加余曾竟成王靛彭超义王永胜杨柳王磊刘超盛科
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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