基于热网络法的风电机组主轴承温度场分析

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关键词：风电机组；主轴承；三排圆柱滚子；热网络；温度场

中图分类号：TH122

DOI：10.3969/j.issn.1004-132X.2025.11.018

Abstract：Based on thermal network method，a bearing temperature field analysis method was established to address the heating and temperature rise problems of the main bearings in wind turbine with a three-row cylindrical roller structure.By slicing the rollers ofthe bearings，a force balance equation system of the bearings was established by using deformation coordination conditions，the rollr slice loads were obtained by solving the equation systems.The sliding motions between the roller slices and the raceway surfaces were also analyzed. Then，based on the load actions and relative sliding motions between the bearing parts，the heat generation powers of the friction heat source at the contact positions of the rollrs，raceways，retainers and sealing rings were obtained. Finally，according to the friction heating positions and specific interal structures of the bearings，the thermal network method was used to set up the internal network nodes of the bearings，and the thermal network balance equation system of the bearings was established. For a specific the main bearing in a 2.0MW wind turbine，the effects of lubrication viscosity，axial clearance，roller number and rotational speed on bearing temperature were solved and analyzed.

Key words：wind turbine；main bearing；three-row cylindrical roller；thermal network；temperature field

0 引言

能源短缺和环境污染问题日益突出，开发利用可再生能源来替代传统的化石能源成为应对这一问题的有效途径。（剩余14636字）