Wind power main shaft bearing design calculation and model selection method and device

Abstract

The invention provides a wind power main shaft bearing design calculation and model selection method and device. The method comprises the following steps: reading a time sequence load of a main shaftbearing by taking a load step as a unit; calculating a radial load and an axial load borne by the bearing under the action of each load step; calculating a bearing equivalent load corresponding to theload step of each time sequence according to the radial load and the axial load; calculating a rated dynamic load minimum value of the main shaft bearing according to the bearing equivalent load of each load step; calculating the shaft outer diameter of the main shaft bearing according to the bearing equivalent load of each load step; and according to the minimum value of the rated dynamic load and the outer diameter of the shaft, finishing type selection of the main shaft bearing. According to the wind power main shaft bearing design calculation and model selection method and device, the original data size is not lost, bearing design calculation and model selection are carried out by adopting the original data, the calculation precision is high, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and device for design calculation and type selection of wind power main shaft bearings. Background technique [0002] The main shaft bearing is one of the core components of the wind turbine. It has special operating conditions and harsh application environment. Once it fails, it will cause high component costs and replacement costs, and affect the power generation. [0003] Main shaft bearing design calculation and type selection is one of the key steps in wind turbine design. Unreasonable main shaft bearing type selection and calculation will cause premature bearing failure and cause serious losses. [0004] Existing technical solutions generally use equivalent loads for calculation and type selection design. This method first simplifies the load time series, and then uses equivalent loads to calculate and evaluate the bearing life. Although this method i...

AI Technical Summary

Problems solved by technology

[0002] The main shaft bearing is one of the core components of the wind turbine. It has special operating conditions and harsh application environment. Once it fails, it will cause high component costs and replacement costs, and affect the power generation.

[0003] Main shaft bearing design calculation and selection is one of the key steps in the design of wind turbines. Unreasonable main shaft bearing selection and calculation will cause premature bearing failure and cause serious losses

[0004] Existing technical solutions generally use equivalent loads for calculation and type selection design. This method first simplifies the load time series, and then uses equivalent loads to calculate and evaluate the bearing life. Although this method is simple, it will cause a large amount of data. At the same time, it will lead to the loss of internal correlation information between various data components, resulting in the inaccurate evaluation and calculation of bearing life

Images