高速永磁电机转子碳纤维护套的缠绕张力计算研究

发布时间：2018-06-18 02:20

  本文选题：纤维缠绕 + 缠绕张力　； 参考：《玻璃钢/复合材料》2017年12期

【摘要】：表贴式高速永磁电机转子的永磁体不能承受高速旋转时产生的离心力,为此研究了一种特殊的大张力环向缠绕碳纤维护套,由于缠绕时张力的施加,这种碳纤维护套会在永磁体外表面形成一定的预压力,从而保护永磁体在高速旋转时不被离心力破坏。基于弹性力学相关理论,提出了计算缠绕张力作用下纤维层应力分布及其对永磁体预压力的方法。通过不同张力缠绕实验确定碳纤维缠绕工艺极限张力,以此为基础,分别采用解析法和有限元法计算了不同张力制度下的纤维层剩余应力,并在大张力缠绕电机转子实验中测试了纤维层提供的预压力。结果表明,解析法能较为准确地预测出碳纤维缠绕层的应力分布情况及其对永磁体的压紧力,且解析结果和有限元的误差很小,和实验测试结果的误差在可接受范围之内,所提出的大张力环向缠绕碳纤维护套可以满足永磁电机转子高速旋转的要求。
[Abstract]:The permanent magnet of a high speed permanent magnet motor rotor can not bear the centrifugal force produced by high speed rotation. A special kind of large tension annular winding carbon fiber sheath is studied, because of the application of tension during winding. This kind of carbon fiber sheath will form a certain prepressure on the outer surface of the permanent magnet, thus protecting the permanent magnet from being destroyed by centrifugal force when rotating at high speed. Based on the theory of elastic mechanics, a method for calculating the stress distribution of fiber layer under winding tension and its prepressure on permanent magnet is presented. The ultimate tension of carbon fiber winding process is determined by different tension winding experiments. Based on this, the residual stress of fiber layer under different tension systems is calculated by using analytical method and finite element method, respectively. The prepressure provided by the fiber layer was tested in the rotor experiment of the large tension winding motor. The results show that the analytical method can accurately predict the stress distribution of the carbon fiber winding layer and its compaction force on the permanent magnet, and the error between the analytical results and the finite element method is very small, and the error of the experimental results is within the acceptable range. The high tension annular winding carbon fiber sheath can meet the requirement of high speed rotation of permanent magnet motor rotor.
【作者单位】： 武汉理工大学材料科学与工程学院;
【基金】：国家自然科学基金(11302168) 湖北省自然科学基金(2014CFB140) 陕西省自然科学基础研究计划资助项目(2013JQ6018) 中央高校基本科研业务费专项资金资助项目(143101001)
【分类号】：TM351
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本文编号：2033571