作　　者： (王栋）; (李锦辉）; (刘勇）; (夏静）;

机构地区： 新疆金风科技股份有限公司,北京100176

出　　处： 《绝缘材料》 2017年第8期116-120,共5页

摘　　要： 为研究绝缘系统热导率对MW级空冷风力发电机温升及绕组温度分布的影响规律,基于金风某MW级风力发电机,利用有限元仿真方法对同一绝缘系统赋予不同热导率的模型进行仿真研究。结果表明:虽然提高绝缘系统的热导率可以达到降低发电机温升的效果,但随着绝缘系统热导率的继续提升,发电机温升下降趋势趋于平缓;同时,随着绝缘系统热导率的提高,发电机槽内绕组温度分布的离散程度发生变化,这需要在大型发电机设计过程中综合考虑。 In order to study the effect law of insulation system thermal conductivity on the temperature rise and winding temperature distribution of MW standard air cooled wind generators, the same insulation system models with different thermal conductivity were simulated by finite element method based on a Goldwind generator. The results show that the temperature rise of generator is reduced by increasing the thermal conductivity of insulation system, but with the increase of the thermal conductivity, the reduce effect of tempera^re rise tends to be gentle. Meanwhile, with the increase of the insulation system ther- mal conductivity, the dispersion degree of winding temperature distribution inside stator slot changes, which should be considered in the design of large generator.

关 键 词： 绝缘系统 热导率 风力发电机 温升 有限元方法