基于时间常数的混合储能系统能量传输速率优化

Time constant-based optimization design of energy transfer rate for hybrid energy storage system in electromagnetic launch

蓄电池-脉冲电容混合储能系统具有高能量密度和高功率密度的优点。为了提升电磁发射装置的连发速率,需要缩短储能系统的充电时长。因此,提出了基于混合储能系统充电电路时间常数的能量传输速率优化方法。该算法取消了现有蓄电池时序串联-台阶升压充电方法中对充电电流第一个峰值的强约束,通过增加充电电路时间常数的方法来抑制充电电流纹波、提升充电速度。仿真结果表明:该算法可有效减小充电电流的纹波,充电速度优于现有方法;该算法的有效使用能够让电磁发射用混合储能系统中限流电感器的设计阻值更小,从而可以减小限流电感器的欧姆损耗。

The battery-pulse capacitor-based hybrid energy storage system has the advantages of high energy density and high power density.In order to increase the firing rate of the electromagnetic launch,a shorter charging time of the energy storage system is needed.A new optimization algorithm based on the time constant of the charging circuit of the hybrid energy storage system was proposed.This algorithm cancels the constraint on the first peak of the charging current of the existing battery sequential cascade control step-up charging algorithms.The algorithm suppresses the ripple of the charging current by increasing the time constant to increase the charging rate.The simulation results show that the proposed algorithm can effectively reduce the ripple of the charging current,and that the charging time is shorter than the compared methods.The effective use of this algorithm can make the design of the current-limiting inductor in hybrid energy storage systems more flexible.