磁开关压缩脉冲过程中,磁芯磁参数需历经非饱和与饱和两个阶段,磁滞回线变化经历半个周期,通过测量这一变化过程中通过磁开关绕组的电流和磁通量变化率,可以计算出磁芯的磁滞回线,确定饱和磁通密度、剩磁等动态参数.讨论了基于高电压放电和脉冲压缩方法测量磁芯动态参数的原理,给出了测试装置的电路原理和电路元件参数的选择方法,测量了大型磁开关磁芯快脉冲条件下的电参数,计算了相关的磁参数,给出了实验结果.

During the pulse compression process,dynamic parameters of magntic core experience two phase of unsaturated and saturated,and which correspond to a half hysteresis cycle. The diagnosis of the winding current and the change rate of magntic flux on the magnetic core provides necessary value for determining the hysteresis cycle,saturated magnetic flux intensity and retentiveness of magntic core. Principle of this diagnosis and method of dynamic parameters on magnetic core are discussed. The schematic circuit and optimizing method of circuit elements for diagnosis equipment are also given as well as the experimental results.