摘要
分析变压器、发电机等铁芯设备的暂态行为时,常用分段线性化的磁化曲线代替磁滞回线,但这种方法存在计算误差和震荡问题。分析J-A磁滞回线模型的基本原理,用等式变形方法推导出逆J-A模型,分析其计算稳定性差的可能原因。根据已有参数,应用J-A模型对实际磁性材料的动态磁滞回线进行仿真分析,研究结果表明,涡流损耗对磁滞回线的影响较大。
When it comes to the analysis of transient state activities of iron core equipment including transformers and generators, magnetization curves of piecewise linearization are often used to replace hysteresis loop. Yet, there are often calculation errors and oscillation. This article makes analysis on the principle of J-A hysteresis loop model, deriving opposite J-A model with equation transformation method, and analyzing the possible causes for instability in calculations. The simulation research results show that eddy current loss has a major impact on hysteresis loop.
出处
《农业科技与装备》
2011年第10期50-53,共4页
Agricultural Science & Technology and Equipment
关键词
J—A模型
涡流损耗
磁滞回线
仿真
J-A model
eddy current loss
hysteresis loop
simulation
