Improving the Efficiency of a Linear Pulse Electromechanical Accelerator Due to Excitation by a Series of Pulses

摘要

A mathematical model of a linear pulsed electromechanical accelerator (LPEA) of the induction type has been developed, in which, to take into account the interconnected electrical, magnetic, mechanical and thermal processes, the equations are presented in a recursive form. The electromechanical characteristics of LPEA were obtained upon excitation by a series of five pulses, which are formed by sections of a capacitive energy storage unit (CES). It is shown that feeding LPEA from sections of the CES allows, due to the time-stretching process of the force action, to significantly reduce the amplitude of the electrodynamic force (EDF), which manifests itself as the recoil force. If the sections of the CES are the same, then the LPEA efficiency coefficient, equal to the ratio of the maximum speed of the conductive armature (CA) to the maximum recoil force, is 2.3 times higher when powered by a series of pulses than when supplied with a single pulse. With a sequential increase in the energy of the sections of the CES due to voltage or due to capacities, the efficiency coefficient of LPEA additionally increases by 15-20%.