A fast solving technique for dynamic characteristic analysis of electromagnetic repulsive system

A fast solving technique for the dynamic characteristic analysis of electromagnetic repulsive system is introduced in this paper. In this method, the characteristic calculation is based on the equivalent circuit model of the system which is set up by dividing the moving object into multi segments. The state equations that abstract from the equivalent circuit model are solved by using Runge-Kutta method. The circuit parameters such as self inductance and mutual inductance are evaluated from the geometry parameters by using an algorithm based on Bartkypsilas transformation. To check the efficiency and accuracy of this solving technique, the TEAM Workshop Problem 28 is taken as a test model, which is also solved by using time stepping FEM. The comparison of the results between the new calculation method and time stepping FEM and experiment proves the advantage and feasibility of the proposed solving technique.