求翻译：其次，针对磁阀式可控电抗器存在的输出电流谐波含量大的不足，提出了基于移相电抗器的移相滤波的思想以及多级磁阀铁芯结构抑制谐波的方法，对这两种方法进行了分析，推导出各自输出电流谐波表达式，进而得到各次谐波幅值的分布情况，将分析结果分别与单级磁阀铁芯结构的分布情况进行比较，谐波抑制效果明显。并对单级磁阀铁芯结构及多级(四级)磁阀铁芯结构的两台电抗器进行谐波分布情况实验，所得结果表明，多级磁阀输出电流的谐波含量明显比单级磁阀的小，证明了采用多级磁阀的铁芯结构可有效的降低电抗器装置本身向电网注入的谐波。是什么意思？

正在翻译，请等待...

Second, in response to magnetic valve-control of the output reactor is the harmonic content of the current low, based on the phase-shift reactor of the phase shift of thinking as well as filtering multi-level magnetic valve core structure of the harmonic suppression methods, these two methods are de

Second, for magnetic valve type can control reactance device exists of output current harmonic content large of insufficient, made has based on moved phase reactance device of moved phase filter of thought and multilevel magnetic valve iron core structure suppression harmonic of method, on this two%