中文摘要：

针对40.5kV新型磁力机构工作原理及其运动特点,进行了多场耦合的静态和动态特性仿真研究。首先,建立磁力操动机构的有限元模型,利用Maxwell软件对磁力机构的静态特性进行仿真;其次,根据电压平衡方程和达朗贝尔运动方程,在静态仿真基础上采用ADAMS和MATLAB建立40.5kV磁力机构SF6断路器运动模型,对磁力机构的动铁心、SF6断路器触头运动特性进行了仿真研究。最后,分析了磁力机构运动特性对SF6断路器性能的影响,为新型磁力机构在中压SF6断路器中应用提供了一定理论基础。

英文摘要：

A new type of electromagnetic force actuator（EMFA） for 40.5 kV circuit breaker is simulated on static and dynamic performances of multi-field coupling according to its working principle and motion characteristics.Firstly,a finite element model is established,and the static characteristics of EMFA are simulated by the software Maxwell.Secondly,a dynamic model of 40.5 kV SF6 circuit breaker is established on the basis of static simulation via ADAMS and MATLAB according to the voltage balance equation and D＇Alembert equation,and the moving core of EMFA and motion characteristics of SF6 circuit breaker contact system are simulated.Finally,the impact of the motion characteristics of EMFA on the performance of SF6 circuit breaker is analyzed to provide a theoretical basis for the application of EMFA to medium voltage SF6 circuit breaker.