交直流叠加磁化特性的测量及具有直流偏磁磁场的数值分析

Measurement of AC&DC Superposition Magnetization Characteristic and Analysis of Magnetic Field with DC Bias

研究了交流电压源和直流电源共同激励情况下铁磁材料的磁化现象，提出了测量直流偏磁磁化特性的双爱泼斯坦方留法并开发了测量装置；给出了直流偏磁磁化特性的描述方法；测量了３０ＲＧ１２０型电工钢片的直流偏磁磁化特性；提出了相应的直流偏磁磁场的数值计算方法，并进行了验证．

This paper presents the describing method of the magnetization characteristic offerromagnetic materials magnetized by AC and DC supplies, which is measured with an double Epstein frame. Based this, the analysis method of magnetic field with DC bias is proposed. As an example, the magnetic field of an Epstein frame with a long rectangular hole, excited by DC and AC supplies, is computed and measured. The results verify the validity of the propsed method.