中文摘要：

对继电器电磁干扰产生的原因和干扰路径进行了分析。运用复域分析法建立了继电器复域等效电路模型。通过Matlab仿真,计算了继电器触头分断时其两端的电流、电压变化规律。讨论了继电器触头电弧产生的原因,为建立继电器电磁干扰模型,揭示继电器电磁干扰机理奠定了基础。

英文摘要：

Relay＇s electromagnetic interference and its path were analyzed and the relay＇s complex domain equivalent circuit model was built by complex domain analysis method.The change rule of electrical contact＇s breaking current and voltage were calculated by the Matlab.The reason of producing the electric arc was discussed,which provides a basis for establishing relay＇s electromagnetic interference model to reveal the interference mechanism.