风力发电机轴承温度场研究

发布时间：2017-12-28 00:25

本文关键词：风力发电机轴承温度场研究　出处：《制造业自动化》2017年05期 　论文类型：期刊论文

【摘要】：目前,风力发电迅速发展,发电机组可靠性非常重要,而分析发电机轴承温度变化可控制发电机工作性能。分析轴承温度场的研究方法主要有热网络法、有限元法及实验法。采用热网格法将发电机轴承系统温度节点离散化得到主要节点温度。利用传热学与摩擦学分析发电机轴承发热量数学模型,基于轴承工作状况,选择合适的轴承内部对流换热系数,在有限元软件下分析轴承内部稳态温度场的分布情况和热变形,得到了合理的轴承温度场云图,并分析了发电机轴承在风速突变转速下的温度场。
[Abstract]:At present, the rapid development of wind power generation, the reliability of the generator set is very important, and the analysis of the change of the temperature of the generator bearing can control the performance of the generator. The main methods for analyzing the temperature field of bearing include thermal network, finite element method and experimental method. The temperature node of the generator bearing system is discretized and the temperature of the main node is obtained by the heat grid method. According to the heat transfer and friction analysis of generator bearing heat mathematical model, based on the working condition of bearing, bearing the internal convection heat transfer coefficient of the right choice, steady state temperature field inside the bearing distribution and thermal deformation in the finite element analysis software, the image bearing temperature field reasonably, and analyzes the generator bearing temperature field speed mutation under the wind speed.
【作者单位】：沈阳工业大学机械工程学院;
【基金】：国家自然科学基金重点项目(51537007) 辽宁省科技创新重大专项(201303005)
【分类号】：TM315
【正文快照】： 0引言风力发电机是风能的主要利用方式,是把风能转换为电能的一种电气设备。全国滚动轴承标准化技术委员会也已制定了相关标准——JB/T10705-2007滚动轴承:风力发电机轴承。发电机轴承采用圆柱滚子轴承和深沟球轴承,要求高精度、低振动和低噪声[1]。风力发电机组故障率偏高,在

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