脉冲电流激励下铁磁材料的局部磁滞特性分析辛伟.pdfVIP

34 12 Vol.34 No.12 Apr.25, 2014 2004 2014 4 25 Proceedings of the CSEE ©2014 Chin.Soc.for Elec.Eng. DOI 10.13334/j.0258-8013.pcsee.2014.12.022 0258-8013 (2014) 12-2004-08 TM 14 ( 100191) Analysis of Minor Hysteresis Characteristic for Ferromagnetic Material Under Pulsed Current Excitation XIN Wei, MAO Xuefei, CHEN Xingle (School of Automation Science and Electrical Engineering, Beihang University, Haidian District, Beijing 100191, China) ABSTRACT: Measurement results of the different minor Preisach hysteresis curves were given when pulsed current varied periodically. The mathematic models of minor hysteresis 0 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 coefficientsThe other one was curve fitting methodThrough the changes of pulsed current peak values and the turning points values, the mathematical relationship between fitting functions of different minor hysteresis curves was establishedThe 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