脉冲电流激励下铁磁材料的局部磁滞特性分析  

Analysis of Minor Hysteresis Characteristic for Ferromagnetic Material Under Pulsed Current Excitation

作　　者：辛伟[1] 毛雪飞[1] 陈兴乐[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京市海淀区100191

出　　处：《中国电机工程学报》2014年第12期2004-2011,共8页Proceedings of the CSEE

基　　金：国防技术基础项目(Z1320130007)~~

摘　　要：脉冲电流周期性变化时,测量得到不同脉冲电流激励下铁磁材料的局部磁滞曲线。通过2种方法建立能够描述局部磁滞曲线的数学模型,一种是基于Preisach模型的模拟方法,该方法根据铁磁材料的极限磁滞回线和转折点的值及修正系数,可以建立不同局部磁滞曲线的数学模型;另一种是曲线拟合方法,该方法通过脉冲电流峰值的变化和转折点的值可以建立不同局部磁滞曲线拟合函数间的数学关系,实现曲线的数学模拟。模拟结果表明,前者方法简便,应用范围宽、通用性强;后者方法繁琐,需建立曲线的拟合函数,模拟精度高。研究表明,两种方法都能够有效地模拟不同脉冲电流激励下铁磁材料的局部磁滞特性。Measurement results of the different minor hysteresis curves were given when pulsed current varied periodically. The mathematic models of minor hysteresis curves were established by two methods. For these two methods, one was a simulation method based on Preisach model, and established mathematical model on the basis of the numerical values on the limit hysteresis loop, turning points and correction coefficients. The other one was curve fitting method. Through the changes of pulsed current peak values and the turning points values, the mathematical relationship between fitting functions of different minor hysteresis curves was established. The simulation results show that the first method is simple, and has a wide application range as well a good generality. The second method is complicated, it needs to establish curve fitting functions, and has a high simulated accuracy. The two methods both can effectively simulate the minor hysteresis curves under different pulsed current excitation.

关 键 词：局部磁滞 脉冲电流 铁磁材料 Preisach磁滞模 型 曲线拟合 测量方法 

分 类 号：TM14[电气工程—电工理论与新技术]