电动机保护器高频电磁辐射特性的分析与研究

Analysis and Research on Electromagnetic Radiation Characteristic of High Frequency of Motor multiple-Protector

采用传输线矩阵的方法对电动机保护器进行建模和研究,并对骚扰源集总的表面电流、空间辐射场特性进行了仿真,通过与电波暗室3m法实测的数据的比对,全面了解和掌握该产品的高频电磁辐射特性,为企业设计和制造低压电器产品的提供了有力的理论基础和实践数据。

In this paper, regarding an intelligence motor multiple -protector as the research subject, a model and de- veloped the system by applying the method of matrix of transmission lines had been created. The simulation for the char- acteristics of the lumped surface current on the interfering source and the radiation field are conducted, a thorough knowledge of high frequency electromagnetic radiation specialty of the products is established by comparing the simula- tion results and actual measurement data based on anechoic chamber of 3m method. A theoretical basis and practical guideline for the design and manufacturing of low - voltage electrical aooaratus are provided.