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机构地区:[1]西安交通大学
出 处:《西安交通大学学报》1997年第12期67-70,76,共5页Journal of Xi'an Jiaotong University
摘 要:给出了两种计算中小型异步电机定子固有频率的近似方法.首先把电机定子简化成平面问题,采用二维有限元程序进行计算,然后又给出了一套用以估算的近似计算公式,利用两种方法计算了一些实例.为了检查两种方法的可靠性,利用三维有限元程序对部分实例做了考核计算.计算结果表明,这里的二维有限元法和近似公式的计算结果均与三维有限元法和实测试验的结果吻合得较好.This paper presents two approximate calculation methods that can be used to calculate natural frequencies of the stator of medium and smallsize asynchronous machines. The first method is a 2D finite element method, in which the stator is simplified to a plane problem. The second one is a kind of method that can be used to calculate natural frequencies by hand with a set of approximate formulas. Using above two methods, some practical problems are computed. For the sake of checking reliability of these two methods, a 3D finite element program is used to solve the practical problems. The results show that the natural frequencies computed by using the above two methods agree well with the data obtained from the test and the 3D finite element program.
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