交直流混合激励下取向硅钢片磁滞及损耗特性模拟方法

Hysteretic and Loss Modeling of Grain Oriented Silicon Steel Lamination under AC-DC Hybrid Magnetization

该文对交直流混合激励下(既含偏磁又含谐波)取向硅钢叠片的动态、静态磁滞特性和损耗特性进行测量,分析激励中不同因素(如直流偏磁磁场强度、谐波次数)对损耗的影响规律。提出基于非对称极限磁滞回线的Preisach模型参数辨识方法,实现静态磁滞回线的准确模拟。提出交直流混合激励下异常损耗模拟及其参数提取方法,并基于损耗分离和场分离的等效关系,得到交直流混合激励下的Preisach动态磁滞模型。通过仿真和实验结果的对比,验证了该方法的有效性和准确性。

The dynamic and static hysteresis properties as well as loss properties of grain oriented silicon steel lamination under the AC-DC hybrid excitation with both DC bias and harmonic are measured.Then the influence of different excitation factors(such as DC bias magnetic field intensity and harmonic order),on the iron loss is analyzed.A parameter identification method of Preisach model based on asymmetrical major hysteresis loop is proposed,which realizes the accurate simulation of static hysteresis loop.The methods of excess loss simulation and parameter extraction under AC-DC hybrid excitation are investigated.Based on the equivalent relationship between loss separation and magnetic field separation,the Preisach dynamic hysteresis model is obtained.The consistency between the simulated results and the measured ones verifies the validity and accuracy of the proposed method.