摘要
在基于超导电感储能的高功率脉冲电源中,超导磁体对电感性负载放电时存在的过电压严重威胁超导磁体的安全。本文就目前常用的抑制过压的方法展开了理论分析,并通过仿真分析和计算比较了三种转换电路在超导磁体对电感性负载放电过程中的性能特点,最后又分别分析了三种转换电路对超导磁体电压抑制的特点。结果表明:三种转换电路都可以很好地抑制过压,不过非线性电阻转换电路的转换性能优于线性电阻转换电路,适合于负载电流脉冲前沿上升率要求较高,且转换时间较短的应用场合;而电容性转换电路对于负载电流脉冲的幅值要求较高,且损耗较低的应用场合较为合适。
In the high-power pulse source based on superconducting inductive energy storage system,the over-volt-age from superconducting magnet is always existed when the magnet discharges to the inductive load.The over-volt-age would seriously threat the security of superconducting magnets.This paper presents the theoretical analysis of the methods of over-voltage suppression,and the transient discharging process is researched by the simulated analy-sis and arithmetic comparison.The characteristics of over-voltage suppression of three switching circuits were ana-lyzed.The results show that these three kinds of switching circuits can achieve the purpose of magnet’s over-volt-age suppression,while the performance of switching circuit with the nonlinear resistance is superior to that of the linear and is suitable for the load with quick ratio pulse current requirement.The capacitive switching-circuit is suitable for the low power loss situation.
出处
《电工电能新技术》
CSCD
北大核心
2010年第4期27-30,80,共5页
Advanced Technology of Electrical Engineering and Energy
基金
四川省科技支撑计划项目(2008FZ0126)
关键词
功率脉冲
超导磁体
电感负载
过压
非线性电阻
电容
power pulse
superconducting magnet
inductive load
over voltage
nonlinear resistance
capacitor
