摘要
非晶合金开关磁阻电机(SRMA)的双凸极结构和脉冲供电方式决定了电机内磁场分布的非正弦性,并且不同部位磁通密度波形具有较大差别,导致难以准确计算SRMA的铁心损耗。考虑到非正弦激励下铁心损耗难以用传统的Bertotti损耗分离模型进行计算,本文提出一种耦合Play磁滞模型与变修正系数动态损耗模型的SRMA铁损有限元分析方法。首先,构建非晶合金磁特性测量平台,测量了不同工况下的磁滞回线与损耗特性;其次,根据测量得到的准静态磁滞回线对Play磁滞模型进行参数辨识,并用该模型计算SRMA的磁滞损耗;引入与磁通密度和频率相关的变修正系数,对含高次谐波的SRMA铁心动态损耗进行准确计算;最后,将Play磁滞模型与变系数傅里叶分解损耗计算方法应用于SRMA铁心损耗的有限元分析之中,并进行了实验验证。结果表明,所提方法在SRMA铁损计算中具有较高的精度。
The double salient structure and pulse power supply mode of switched reluctance motor with amorphous alloy core(SRMA)determine that the magnetic field distribution in the motor is non-sinusoidal and the magnetic flux density waveforms in different parts are quite different,which makes it difficult to accurately calculate the core loss of SRMA.Considering that the core loss under non-sinusoidal excitation is difficult to be calculated by the traditional Bertotti loss separation model,a finite element analysis method of SRMA core loss coupled with Play hysteresis model and variable correction coefficient dynamic loss model is proposed:Firstly,a measuring platform for magnetic properties of amorphous alloys is constructed,and the hysteresis loop and loss characteristics under different working conditions are measured;Secondly,according to the measured quasi-static hysteresis loop,the parameters of Play hysteresis model are identified,and the hysteresis loss of SRMA is calculated with this model;Thirdly,the variable correction coefficient related to magnetic flux density and frequency is introduced to accurately calculate the dynamic loss of SRMA core containing higher harmonics;Finally,the Play hysteresis model and the variable coefficient Fourier decomposition loss calculation method are applied to the finite element analysis of SRMA core loss,and are verified by experiments.The results show that the proposed method has high accuracy in SRMA core loss calculation.
作者
邹震
陈龙
贲彤
聂恒
井立兵
ZOU Zhen;CHEN Long;BEN Tong;NIE Heng;JING Libing(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China;Hubei Provincial Engineering Technology Research Center for Power Transmission Line,China Three Gorges University,Yichang 443002,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment(Hebei University of Technology),Tianjin 300130,China)
出处
《电工电能新技术》
CSCD
北大核心
2023年第5期14-24,共11页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金项目(52007102)
省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学)开放课题基金项目(EERI_KF2021015)。
关键词
非晶合金
磁性材料磁特性
铁心损耗
开关磁阻电机
amorphous alloy
magnetic properties of magnetic materials
core loss
switched reluctance motor
