超级电容器用于建立强脉冲磁场的可行性研究

为解决爆炸磁流体发电机应用设计中储能高压脉冲电容器存在的一些缺点,提出了一种以超级电容器替代高压脉冲电容器作为储能器件建立强脉冲磁场的设计方案。在给出脉冲放电回路中超级电容器的等效电路模型、超级电容器模块的设计原则和储能系统管理方案后,对超级电容器模块振荡放电和非振荡放电两种类型进行了分析计算。超级电容器模块和高压脉冲电容器模块的放电电流仿真波形和模块参数的对比结果表明,在产生同样大的脉冲电流下,超级电容器模块放电持续时间更长,在体积和重量上有一定的优势,用于建立强脉冲磁场是可行的。

Feasibility of Establishing High Pulse Magnetic Field Using Supercapacitor

MHD generation is a direct generation of power,and it is a feasible high power microsecond pulse source.Supercapacitor is a new high power device.This paper propose a new method of using supercapacitor substitute high voltage pulse capacitor as energy storage device setting up high pulse magnetic field in the design of Explosively-driven MHD Generator;In the paper it gives the supercapacitor equivalent circuit model in the high pulse discharging application based on physical reasoning,the equivalent circuit model consists of R-C-L three elements,and at the same time the paper establishes the supercapacitor bank equivalent circuit in the high pulse discharging loop.It also gives the rules to calculate the size of supercapacitor bank,and proposes a management rules including charging method,voltage balancing device and temperature management for the supercapacitor energy storage system.Accodring to the model and design that is given above,the supercapacitor bank discharging circuit is analyzed and calculated when the circuit belongs to oscillating and non-oscillating process respectively.At last,the discharging current of simulation between the high voltage pulse capacitor and supercapacitor is compared,and the simulation results shows that supercapacitor bank not only has a longer discharging time but also has smaller volume and less weight than the high voltage pulse capacitor when creating a same high discharging current,so it is feasible to use supercapacitor establishing high pulse magnetic field.