Study on Magnetic Properties of Magnetic Materials at Different Frequencies and Pressures

Abstract

For electric power producers, magnetic properties of magnetic materials under different external factors have a very important reference value for the design of products that meet the parameters of the target. Firstly, this paper introduces the research background of electrical magnetic materials. Then, it selects a variety of brands of electrical silicon steel and adopts the Epstein square method and the ring sample method in the measurement of one-dimensional magnetic properties. By testing the samples of silicon steel, the magnetic properties under 20 different frequencies and 15 different pressures were recorded respectively. Finally, this paper obtains the change of magnetic property parameters such as total loss ratio P, magnetic permeability u and remanence Br, which are most concerned in the magnetic properties of soft magnetic material and analyzes the reasons for the change of data. The experimental results show that the magnetic properties have regularity with the change of frequency and pressure. The measurement method in this paper can serve for the practical engineering.