基于多模块分时放电半解析模型的脉冲电源触发策略

Trigger Strategy of Pulsed Power Supply Based on the Semi-Analytical Model of Sequentially-Triggered Power Units

电磁轨道发射装置的脉冲电源通常由多个脉冲放电单元构成,在发射前需要对脉冲电源的触发策略进行设计,即人为设置每个放电单元的电容电压和放电时序。该过程通常需要手动进行反复摸索和调整,较为耗时。针对该问题,该文首先建立多模块分时放电的半解析模型,与商用软件Simplorer建立的仿真模型相比,单次仿真时间由37s缩减到了0.19s。在此基础上,该文提出脉冲电源触发策略的自动求解方法:首先根据工况要求规划出梯形波电流,然后通过调整触发时序使得实际仿真电流尽可能地逼近梯形波,从而获得较为理想的电流波形。基于自动求解方法,求出了三种不同峰均比设置下的脉冲电源触发策略,并对三种情况下的初始电压、投入的模块数量、出口速度及发射效率等指标进行了对比分析。

The pulsed power supply of the electromagnetic rail launcher is usually composed of several pulse power units.The trigger strategy of the pulsed power supply must be designed before launching,that is,the capacitor voltage and discharge time sequence of each unit should be set.This process usually requires manual trial and error,which is time-consuming.In order to solve this problem,a semi-analytical model of sequentially-triggered power units is built in this paper.The simulation time was reduced from 37s to 0.19s compared with the model built by commercial software Simplorer.Furthermore,an automatic solution method for the trigger strategy of pulsed power supply is proposed.Using this method,the optimal trigger strategy of power supply can be worked out according to different working conditions,and the ideal current waveform can be obtained.Based on this method,three trigger strategies are obtained,the initial voltage,the number of input modules,the exit velocity and the launch efficiency are compared and analyzed.