【摘要】 建立永磁的等效磁路模型是含永磁继电器设计的关键之处。由于缺乏对永磁体外部漏磁的考虑,因此会降低继电器的设计精度。针对已提出的分段永磁体模型思想,对其从理论上进行分析,给出3种典型状态(开路条件、闭路条件、电磁系统)下的等效磁路模型;通过对3种等效磁路模型的研究,基于磁路的方法给出了求解各段永磁工作点的方法;并且得出各段永磁工作于不同回复线的结论。利用仿真和实验方法验证了所得结论的正确性。更多还原

【Abstract】 The establishment of equivalent circuit modeling of permanent magnet(PM) is the key to the design of PM relays.Failure to consider the external leakage in magnetic flux of PM would generally lead to a lower design precision of relay operation.Based on the proposal idea of a PM subsection model,this paper analyzed the model theoretically and presented the equivalent magnetic circuit model in three typical working conditions(open magnetic circuit,close magnetic circuit,and electromagnetic system).By studying the three magnetic circuit conditions,the solution of calculating the working point of each PM subsection based on the magnetic circuit method had been obtained.Furthermore,it is concluded that each PM subsection works on the different recoil line.The conclusion has been verified by the simulations and experiments.更多还原