基于定点谐波平衡法的铁心磁滞与损耗特性分析

发布时间：2018-06-02 06:01

本文选题：直流偏磁 + 损耗函数　；参考：《电工技术学报》2014年07期

【摘要】：利用叠片铁心模型进行正弦励磁和直流偏磁励磁下的实验,得到相应的磁滞回线和铁心损耗。在基于B-H-M的磁场本构关系中引入定点磁阻率νFP,解决了数值计算中传统磁阻率ν的不连续性问题。利用基于损耗函数的磁滞模型模拟无偏磁和有偏磁条件下铁心的磁滞效应。将定点技术与损耗函数磁滞模型相结合,并应用于谐波平衡有限元计算,在考虑磁滞效应的基础上,对绕组励磁电流和铁心内的非线性磁场进行计算。基于计算结果,得到了各种励磁条件下铁心内不同区域的磁滞特性和损耗特性,分析了不同励磁形式对铁心磁滞特性和损耗分布的影响。
[Abstract]:The experiments of sinusoidal excitation and DC bias excitation are carried out by using laminated core model. The corresponding hysteresis loop and core loss are obtained. In the magnetic field constitutive relation based on B-H-M, the fixed point magnetoresistive rate (B-H-M) is introduced to solve the problem of discontinuity of traditional magnetoresistive rate (B-H-M) in numerical calculation. A hysteresis model based on loss function is used to simulate the hysteresis effect of iron core under unbiased and biased magnetic conditions. The fixed point technique is combined with the loss function hysteresis model, and applied to the finite element calculation of harmonic balance. On the basis of considering the hysteresis effect, the excitation current of the winding and the nonlinear magnetic field in the core are calculated. Based on the calculation results, the hysteresis characteristics and loss characteristics of different regions in the core under various excitation conditions are obtained, and the effects of different excitation forms on the hysteresis characteristics and loss distribution of the core are analyzed.
【作者单位】：华北电力大学电力工程学院;华北电力大学电气与电子工程学院;河北工业大学电磁场与电器可靠性省部共建重点实验室;
【基金】：国家自然科学基金(51307057,51107026) 北京市自然科学基金(3133038) 河北省自然科学基金(E2013502323) 高等学校博士学科点专项科研基金(20130036120011)资助项目
【分类号】：TM41

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