A selection method for elastic support of wind turbine generators
An elastic support, generator technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of analysis, calculation and evaluation, analysis and calculation without vibration and noise reduction effects
Active Publication Date: 2017-12-15
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
At present, the main work done by the wind power industry in the selection stage of generator elastic support is to calculate whether there is resonance in the generator system within the operating speed range, and it has not analyzed, calculated and evaluated its vibration and noise reduction effects, nor has it analyzed other typical Analyze and calculate whether there is resonance at frequencies such as the double frequency and double frequency of the power grid
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[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0042] The main function of the elastic support of the generator is to reduce vibration and noise. When selecting the elastic support of the generator, the following points are mainly considered: 1. The stiffness and damping coefficient of the elastic support. The stiffness is mainly used to check its load and deformation characteristics, which is the main basis for the current wind power industry selection; second, the mechanical interface with the whole machine, based on which the shape and size of the elastic support are designed; third, within the working speed range of the generator, it is composed of the elastic support and the generator as a whole The system is whether there is resonance in the rotor rotation frequency range; Fourth, the vibration reduction effect of the elastic support, there is currently no effective method an...
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The invention discloses a model selecting method for an elastic support of a wind power generator. The model selecting method comprises the following steps: S1, calculating the stability of the elastic support to solve a stiffness parameter Kz1 meeting the requirement; S2, calculating the resonance in a working rotation speed interval to solve a stiffness maximum Kz2 meeting the requirement of keeping away from a resonance region; S3, performing simulating calculation on the integral damping effect of the elastic support and the generator, and finding stiffness maximums Kz3, Ky3 and Kx4 meeting the requirements, for the elastic support; S4, selecting stiffness parameters of the elastic support of the generator and determining the model number of the elastic support. The model selecting method disclosed by the invention has the advantages of simple principle, easiness for operation, good effect and the like.
Description
technical field [0001] The invention mainly relates to the field of wind power equipment, in particular to a type selection method suitable for the elastic support of a wind power generator in the wind power equipment. Background technique [0002] The generator in the wind turbine is a key component that converts mechanical energy into electrical energy, and it must be guaranteed to run smoothly and without resonance under working conditions. Due to the design and structural reasons of the generator, the rotor has a mass eccentricity. During the rotation process, vibration is generated due to the centrifugal force generated by the mass eccentricity. The input shaft of the generator is connected with the high-speed output shaft of the gearbox through a coupling, so that the generator obtains a high-frequency excitation load. If the generator transmits high-frequency vibration to the frame during operation, it will greatly affect the fatigue strength and life of the frame. ...
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IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 赵萍杨军陈高华谭湘梁裕国王永胜谷小辉杨柳王靛
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST