电工技术学报2012，Vol.27Issue(7)：109-117,9.
笼型异步电动机径向电磁力波的有限元计算
Finite Element Calculation of Radial Electromagnetic Force Wave in Squirrel-Cage Asynchronous Motors
王荀 1邱阿瑞2
作者信息
- 1. 北京机械设备研究所,北京100854／清华大学电机工程与应用电子技术系电力系统及大型发电设备控制和仿真国家重点实验室,北京100084
- 2. 清华大学电机工程与应用电子技术系电力系统及大型发电设备控制和仿真国家重点实验室,北京100084
- 折叠
摘要
Abstract
In this paper, the field-circuit coupled time-stepping finite element model of squirrel-cage asynchronous motor is presented and the validity is verified by means of the comparison between the stator phase current harmonics of the simulating wave and those of the experiment wave. Air gap flux density is calculated by means of this model and radial electromagnetic force is calculated using the classical Maxwell stress tensor method. Air gap flux density and radial electromagnetic force vary in both space domain and time domain and two dimensional Fourier analysis are carried out to calculate harmonics of those. The influence of the tooth and slot and the slip on flux density and radial electromagnetic force are discussed. The relationship of flux density waves and radial electromagnetic force waves are analyzed. Radial electromagnetic force waves and the testing electromagnetic noise spectra are analyzed and compared and the results verify the effectiveness of the calculation of radial electromagnetic force waves. Radial electromagnetic force and its harmonics calculated by the method can be used to electromagnetic noise analysis in the design stage.关键词
笼型异步电动机/径向电磁力波/气隙磁通密度波/电磁噪声/有限元法/场路耦合/二维离散傅里叶分析Key words
Squirrel-cage asynchronous motor/radial electromagnetic force wave/air gap flux density wave/electromagnetic noise/finite element method/field-circuit couple/two dimensional discrete Fourier analysis分类
信息技术与安全科学引用本文复制引用
王荀,邱阿瑞..笼型异步电动机径向电磁力波的有限元计算[J].电工技术学报,2012,27(7):109-117,9.
