基于有限元仿真的永磁操动机构参数设计研究

Research on Parameter Design of Permanent Magnet Actuator Based on Finite Element Simulation

永磁操动机构结构参数设计是影响断路器性能的关键,公司在40kA真空断路器永磁机构的研发中,以永磁真空断路器生产投入经济性、运行可靠性为目标,建立永磁操动机构有限元模型对永磁体块数、激磁回路线圈匝数及电容容量三个参数进行优化研究,以确定最优化的永磁操动机构参数组合,避免单一参数分析导致的设计不合理。研究结果表明,基于有限元的永磁操动机构仿真模型与实际模型能保持较高的一致性,且该参数设计方法易于实际工程应用。

The structural parameters design of permanent magnet actuators is the key to the performance of circuit breakers.In research and development of 40 kA vacuum circuit breaker permanent magnet actuator,production efficiency and operational reliability of permanent magnetic vacuum circuit breaker have been taken as the targets,and its finite element model has been established.To avoid the unreasonable design of single parameter analysis,the number of permanent magnets,turns of excitation circuit coil and capacitance capacity are optimized to determine the optimum parameters of the permanent magnet operating mechanism.The results show that the simulation model of permanent magnet operation mechanism based on finite element method can maintain a high consistency with the actual model,and this parameter design method can be applied in practical engineering easily.