Research On Energy Conversion Efficiency Optimization Of Electromagnetic Repulsion Mechanism

The electromagnetic repulsive mechanism utilizes the generated electromagnetic repulsive force to drive the switch contact movement through the connecting rod with short response time and fast closing speed.According to the principle of electromagnetic repulsion,the electromagnetic repulsion mechanism can be divided into two types: opposite connect type,mainly opposite connect type CCRM,which electromagnetic repulsion is generated by a pulse current flowing in opposite directions of the moving coil and the driving coil;coupling type,mainly including coupling CCRM and CPRM,which electromagnetic repulsion is generated by the principle of electromagnetic induction.However,due to the unique driving principle,the energy conversion efficiency of the electromagnetic repulsive mechanism is relatively low.Therefore,this paper takes two types of electromagnetic repulsive force mechanisms as research objects,and improves the energy conversion efficiency from the perspective of reducing the resistance of the driving circuit.Firstly,this paper proposes an optimal design method of resistance factor based on opposite connect CCRM,establishes the equivalent circuit model of opposite connect CCRM,analyses the relationship between resistance-loss curve and energy curve,studies and analyses the resistance of driving circuit and coil shape size,extracts resistance factor RF,and proposes an optimal design method of resistance factor.Through simulation verification,the results show that the resistivity optimization method can effectively improve the driving loop current and electromagnetic repulsion peak and improve the energy conversion efficiency in the optimized design of opposite connect CCRM.Secondly,the applicability of resistivity in coupling CCRM is studied.This paper carries out the frequency domain analysis of coupling CCRM,establishes a simplified mathematical model,and then compares with opposite connect CCRM and analyses the applicability of resistance factor optimization method in coupling CCRM.The applicability shows that the coupling CCRM and the opposite connect CCRM have the same RF,and the RF optimization method is suitable for the coupling CCRM,and the simulation validates the effectiveness of the optimization method.Finally,the optimal design method of CPRM is studied.By comparing the repulsive disk with the repulsive disk coil,the equivalence between CPRM and coupling CCRM is analyzed.It proposes an optimization method of resistance factor suitable for CPRM.According to the structure characteristics of CPRM,it analyses the energy conversion process.Combining with the resistance factor optimization method,it proposes a structure which can effectively reduce the equivalent resistance of the repulsion disk.The simulation results show that the RF optimization method can effectively improve the current of driving circuit,increase the peak electromagnetic repulsion force and improve the driving performance of CPRM.