电工技术学报2017，Vol.32Issue(19)：193-201,9.DOI:10.19595/j.cnki.1000-6753.tces.160351
直流偏磁条件下变压器铁心磁化特性的Jiles-Atherton修正模型
Modified Jiles-Atherton Model of Transformer Iron Core Magnetization Characteristics with DC Bias
摘要
Abstract
The Jiles-Atherton (J-A)model based magnetization theory is widely used in the magnetic modeling field,however,its effectiveness for DC bias conditions remains to be verified.Based on the physical implication of magnetization,it was deduced that the combined DC-biased magnetization can be decomposed as the sum of the AC and DC components.According to the total current law,the mathematical expression of magnetic field intensity was obtained.Combined with Langevin Equation,a modified expression of the magnetization curve without hysteresis was deduced.Based on the Law of energy conservation,a modified differential magnetization model was acquired under DC bias as well as inclusion of reasonable reversible coefficients..According to asymmetrical behavior of the magnetization curve,a partition solution methodology was proposed to determine the parameters of the modified J-A model.Simulations and experiments showed good coincidence,and verified effectiveness of the proposed model as to further analyze and compute the excitation currents and iron-core losses for the DC bias conditions.关键词
Jiles-Atherton模型/直流偏磁/磁化曲线/分区求解法/铁损Key words
Jiles-Atherton model/DC bias/magnetization curve/partition solution/iron core loss分类
信息技术与安全科学引用本文复制引用
李长云,刘亚魁..直流偏磁条件下变压器铁心磁化特性的Jiles-Atherton修正模型[J].电工技术学报,2017,32(19):193-201,9.基金项目
新能源电力系统国家重点实验开放课题(LAPS17004)和山东省自然科学基金(ZR2012EEM002)资助项目. （LAPS17004）
