超微晶合金高频磁特性检测中的波形调理  

Waveform conditioning in high frequency magnetic properties testing of nanocrystalline alloys

作　　者：陈龙[1] 汪友华[1] 赵争菡[1] 张晓林[1] 王朝[1] 

机构地区：[1]河北工业大学电磁场与电器可靠性省部共建重点实验室,天津300130

出　　处：《中国测试》2017年第7期25-29,共5页China Measurement & Test

基　　金：国家自然科学基金(51377042)

摘　　要：针对超微晶合金高频磁特性检测时出现的波形非对称畸变问题进行分析与探讨,研究测量过程中由于磁饱和与非对称磁路引起的波形畸变原因。对测试系统进行建模,提出一种基于压缩映射原理的反馈控制算法。设计基于NI高速数据采集卡的全自动测控系统,实现超微晶合金高磁通密度下波形的控制与波形补偿。通过设计第三补偿绕组,补偿磁场强度的非对称分量,得到标准的磁滞回线。最后,测量日立金属所提供的FT-3M磁芯的磁滞回线与比损耗曲线,验证方法的可行性,对超微晶合金的高频磁特性测量对发展高频电力变压器具有参考价值。The paper analyzes and discusses the problem of waveform asymmetric distortion in high frequency magnetic properties measurement of nanocrystalline alloys and studies the waveform distortion caused by magnetic saturation and asymmetric magnetic circuit. By modeling the testing system, a feedback control algorithm based on the contracting mapping principle is proposed. The full-automatic measurement and control system based on the NI high speed data acquisition card is designed, which can realize the waveform control and waveform compensation of nanocrystalline alloys at high flux densities. By designing a third compensation winding, the asymmetric component of the magnetic field strength can be compensated and a standard hysteresis loop is obtained. Finally, a hysteresis and specific loss curve of FT-3M cores provided by Hitachi is measured and the feasibility of the method is verified. The high frequency magnetic properties measurement of nanocrystalline alloys has reference value on the development of high frequency power transformers.

关 键 词：超微晶合金 高频检测 磁特性测量 波形调理 

分 类 号：TM711[电气工程—电力系统及自动化]