中文摘要：

针对种类繁多、特性不同的各类非晶、超微晶软磁材料的电子变压器输出信号的非线性谐波失真有着较大的差异,通过对励磁周期中磁导率变化与工作磁感应强度以及磁滞效应关系的分析,得出了输出信号的谐波失真和磁感应强度以及矩形比的关系,并拟合了近似计算总谐波失真与磁感应强度函数和提出减小谐波失真影响的办法。经测试表明磁感应强度和矩形比对总谐波失真的影响非常明显,低矩形比、高饱和磁感应强度的非晶、超微晶软磁材料可使电子变压器的谐波降低达17 dB之多。

英文摘要：

The nonlinear harmonic distortion of the output signal of electronic transformer made of difference kinds of amorphous and nanocrystalline soft magnetism material has great difference.The analyzes the relationship between magnetic permeability and magnetic induction in an excitation cycle and the relationship between magnetic permeability and hysteresis,obtains the relationship between harmonic distortion and magnetic induction,and the relationship between harmonic distortion and squareness ratio.The functions for calculating total harmonic distortion and magnetic induction are approximately fitted,and the method for reducing the impact of harmonic distortion is proposed.Tests show that the effect of magnetic induction and squareness ratio on total harmonic distortion is very obvious.Using appropriate amorphous and nanocrystalline soft magnetic material with low squareness ratio and high saturation magnetic induction characteristic can reduce the THD（total harmonic distortion） of electronic transformer as much as 17 dB.