Research On Electromagnetic Efficiency Optimization Of Electromagnetic Repulsion Mechanism

The motion of electromagnetic repulsion mechanism involves discharge circuit,electromagnetic coupling, connecting rod mechanical movement. All of these subprocesseshave mutual effect. We need to combine circuit equation, magnetic field and eddy currentequation and motion equation to get its exactly dynamic characteristics. Most scholars athome and abroad got the dynamic characteristics of electromagnetic repulsion mechanismusing the finite element simulation and equivalent circuit model. Also they optimized thedesign of mechanism by these2methods. In order to obtain the optimal solution of theelectromagnetic repulsion mechanism design, We can only try to change the coil’s structureparameters and circuit parameters to find out the changing rule of the dynamiccharacteristics baselessly because of the mutual coupling of dynamic process. Thus, it isnecessary to find out the relations between circuit parameters, structure parameters anddynamic characteristics of the electromagnetic repulsion using physical model. Furthermore we can get a prototype to guide the design of the electromagnetic repulsionmechanism.This paper regards coil-coil electromagnetic repulsion mechanism as research object.Aiming at its two coupling dynamic processes—circuit discharge and electromagneticinduction, we did optimization method research of field and circuit decoupling analysis ofelectromagnetic repulsion mechanism. From the perspective of energy, The main factorsinfluencing the energy conversion efficiency of the discharge circuit are Leq and C,Discharge loop current can describe this; The main factors that effect energy conversionefficiency in the electromagnetic induction coupling process are Thi、Hei、Dav, Themaximum electromagnetic repulsion can describe this. By theoretical derivation of therelationships between maximum electromagnetic repulsion and coil structure parameters,we finally find a method to optimize the electromagnetic field. More specific we get thebest shape coil under a certain electric energy. Through finite element simulation andprototype experiment, we verified the correctness of the theory. Finally through thetheoretical analysis, we demonstrated that CCRM electromagnetic field optimization method is also applicable to CPRM prototype design.Electromagnetic field optimization method, the finite element simulation andprototype experiment results all showed that under a certain amount of electric energy, asmaller α and a bigger β can cause a larger maximum electromagnetic repulsion and abigger conversion efficiency of magnetic energy into kinetic energy.