基于大电流脉冲的超导储能磁体快速放电方法研究

常规的超导储能磁体放电方法不能满足磁体快速放电的要求,而且放电瞬间还会在磁体两端产生高峰值的过电压脉冲,这对磁体的安全是一个隐患,因此寻找快速、安全的放电方法具有一定的现实意义。通过理论分析,笔者研究了在直接放电方法基础上加入电阻性和电容性两种转换电路的可行性。仿真结果表明:两种不同类别的转换电路与直接放电方法相比,不仅放电速率明显提高,还能有效抑制过电压。加入电阻性或电容性转换电路后,磁体中的能量转移更加迅速,输出的电流脉冲峰值更高,对同类超导储能磁体放电研究提供了重要的参考依据。

Study on Fast Discharge of Superconducting Magnet Based on High Current Pulse

The conventional discharging method of superconducting magnet cannot meet the requirement of rapid discharge and also generates high peak value of overvoltage pulse between two sides of the magnet when discharge begins instantaneously,which would be a hidden problem for the safety to the magnet,so looking for some rapid and safe methods has some practical significance.Through the theoretical analysis,this paper studies the feasibility of resistive and capacitive converting circuits.Comparing with the direct discharge,the simulation results show that two different kinds of converting circuit cannot only improve the discharging rate obviously,but also restrain the overvoltage effectively.The resistive or capacitive converting circuit could make energy transfer more quickly and output current pulse higher,which provides some important references for the study on the congener discharge of superconducting magnet.