Analysis of energy conversion process in electromagnetic rail launcher
To enhance the launch efficiency of the electromagnetic rail launcher,the energy conversion processes and rules were discussed,and a nonlinear arithmetic model was constructed for the rail launch-er based on electronic load and electrodynamics.Comprising motional impedance,rail inductance,rail resistance and armature-rail contact resistance,the model contributes to the establishment of a simulation model coupled with structural force,speed and displacement.The characteristics of motional impedance,rail inductance and rail resistance were analyzed,and thereupon the energy transport process was re-vealed as composed of three phases,respectively being pulse power supply excitation,followed by joint excitation of pulse power supply and rail inductance,and finally main excitation of rail inductance.Through several field experiments,it is obtained that the specific process of energy conversion and the en-ergy consumption ratios of various loads,with the energy consumption by rail resistance being the highest(52.73%).By reducing simulation parameters such as track resistance,track resistance gradient and friction coefficient,the transmitter efficiency is improved from 27.27%to 60.87%.
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维普
