非晶合金J-A模型修正  

Amorphous alloys J-A model amendment

作　　者：李超[1] 徐启峰[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电机与控制学报》2014年第7期86-93,共8页Electric Machines and Control

基　　金：国家自然科学基金(51177016);国家电网公司科技项目(闽电发展[2012]88)

摘　　要：非晶合金已广泛应用在电力设备中,但缺乏对其磁滞回线温度特性和带气隙磁环建模方法的研究。本文在J-A模型的基础上,通过修正模型参数的方法引入温度系数,实现了不同温度下非晶合金磁滞回线建模;分析了磁致伸缩效应和热膨胀效应对带气隙磁环的影响,提出了磁致伸缩系数和热膨胀系数随温度变化近似公式,并修正了带气隙磁环的气隙长度值;最终建立了非晶合金附加温度参数和气隙参数的磁滞模型。利用非晶合金磁致伸缩特性和磁滞回线温度特性的共同作用,提出了一种具有稳定温度特性的气隙磁心设计方法,以铁镍基非晶合金为例进行了仿真和实验验证,二者结果吻合,证明了模型和设计方法的有效性。Amorphous alloys have been widely employed in electrical engineering but there was no enough research on its temperature characteristics and the hysteresis of air gapped core model. The amorphous alloys hysteresis model including thermal effects was proposed by incorporating the temperature into the original J-A model. The influence of thermal expansion effect and magnetostrictive effect on magnetic core with air gap was analyzed. The formulae of magnetostriction coefficient and thermal expand coefficient were proposed to correct the length of air gap. Finally, the amorphous alloys hysteresis model including thermal effects and air gap factors was proposed. A new design of air gapped amorphous core with stable temperature characteristics was proposed based on the new model. The experiments on a Fe-Ni-based amorphous core were conducted. The results show good agreement between the simulation and the experiment.

关 键 词：磁滞回线 建模 非晶合金 Jiles-Atherton理论 温度特性 气隙 

分 类 号：TM452[电气工程—电器]