中国电机工程学报2011，Vol.31Issue(9)：113-119,7.
基于电磁拓扑和有限元理论的固体继电器辐射敏感性分析
Radiated Sensitivity Of DC Solid State Relay Based on Electromagnetic Topology and Finite Element Method
徐乐 1王淑娟 1翟国富1
作者信息
- 1. 哈尔滨工业大学电气工程及自动化学院,黑龙江省,哈尔滨市,150001
- 折叠
摘要
Abstract
The outer radiated interference, which enters the interior of the solid state relay (SSR) through leads and apertures, can affect the inner sensitive circuit, and even make the SSR invalid under the complex electromagnetic environment. In this paper, a certain type of DC SSR working in the atrocious electromagnetic condition was analyzed based on the electromagnetic topology and the finite element method. The influence of radiated emission coupling through signal leads at the input/output port and apertures on the shield shell was transformed into an equivalent interference source inside of the shell; and the response at the inner port can be obtained by solving the BLT equation. The finite element model of the DC SSR was established by the software of Ansoft HFSS; and its radiated sensitivity was analyzed by calculating induced voltage and current at the input port. The simulation results agree well with the calculation results through the electromagnetic topology method. Furthermore, it was analyzed that different lengths of signal leads at the input/output port and radiuses of apertures on the shield shell can influence the radiated sensitivity of SSR. The analytical method introduced is significant for the analysis and the forecast of the EMC capability of SSR.关键词
固体继电器/辐射敏感性/电磁拓扑/BLT方程/有限元方法分类
信息技术与安全科学引用本文复制引用
徐乐,王淑娟,翟国富..基于电磁拓扑和有限元理论的固体继电器辐射敏感性分析[J].中国电机工程学报,2011,31(9):113-119,7.
