第32卷第5期 2011年5月
仪器仪表学报 Chinese Jourmal of Seientific Instrument
非晶/超微晶合金电子变压器
谐波失真实验研究
樊尚春，陶泽辉，邢维栽
（北京航空航天大学仪器科学与光电工程学院北京100191）
Vol. 32 No.5 May.2011
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谱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谱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17dB 之多。
关键调：非晶；超微晶；谱波失真；磁感应强度；矩形比
中图分类号：TP211*.53;TM271*.2文献标识码：A
国家标准学科分类代码：510.10
Harmonicdistortionexperimentalresearchofamorphous&
nanocrystallineelectronictransformer
Fan Shangchun,Tao Zehui,Xing Weiwei
(School of Instrument Science & Opto-electronics Engineering,Beihang Unirersity, Bejing I00191 , China)
Abstract: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 permea-bility and hysteresis, obtains the relationship between harmonic distortion and magnetic induction, and the relation-ship 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 pro-posed. Tests show that the effect of magnetic induction and squareness ratio on total harmonic distortion is very obvi-ous. Using appropriate amorphous and nanocrystalline soft magnetic material with low squareness ratio and high satu-ration magnetic induction characteristic can reduce the THD (total harmonic distortion) of electronic transformer as much as 17 dB.
Key words: amorphous; nanocrystalline; harmonic distortion; magnetic induction; squareness ratio
1引
言
现代电子仪器设备正朝着高性能、高效率、小型轻量化的方向发展，广泛应用于各类电子仪器设备中的音频
收稿日期：2010-10
Received Date: 2010-10
*基金项目：国家自然科学基金仪器专项（No.60927005）资助项目
变压器、匹配变压器、隔离变压器等电子变压器在这方面的需求也尤为突出·"，此外一些以软磁材料为关键部件的各类元件及传感器也有着相关要求：23]。相比传统铁氧体等软磁材料(45)，非晶、超微晶软磁合金有着高磁导率、低矫顽力、低铁损、温度稳定性好和低磁滞伸缩效应的等特点，其综合磁性能远优于铁氧体和坡莫合金等