Abstract
The static hysteresis characteristics of soft magnetic materials were measured by the static performance testing system (SPTS). With a toroidal-shape specimen and Epstein frame, the DC magnetizations of different forms of magnetic steel sheet and grain-oriented (GO) silicon steel sheet can be realized by setting a DC excitation. Besides, the corresponding first-order reversal curves (FORCs), higher-order reversal curves (HORCs) and concentric hysteresis loop are measured. Based on the measured FORCs, the parameter identification was carried out, and the Everett function was established. Thus the inverse Preisach model was obtained. The consistency between the simulated results and the measured ones verifies the validity of the measurement method and the accuracy of the numerical simulation method of magnetic hysteresis characteristics.
Highlights
Hysteresis is one of the most important characteristics inherent in ferromagnetic and ferrimagnetic materials
Researches on hysteretic characteristics prevail in electrical engineering by means of one and two dimensional (1&2D) magnetic measurement and testing, and a measuring instrument was designed for three dimensional (3D) magnetic properties of soft magnetic materials
A simple test procedure is designed and the experiment is carried out to get the hysteretic characteristics in ferromagnetic materials under DC magnetizations
Summary
Hysteresis is one of the most important characteristics inherent in ferromagnetic and ferrimagnetic materials. The hysteretic characteristics of different magnetic materials are mainly represented by the hysteresis curves.. The hysteretic characteristics of different magnetic materials are mainly represented by the hysteresis curves.1 Soft magnetic materials, such as the magnetic plate with high permeability and silicon steel sheet, have been widely used in the manufacture of power transformers, electric machines and reactors. Intensive study on the hysteretic characteristics plays an important role in the modeling of magnetic properties and numerical computation of electric equipment.. Numerical methods combined with the fixed-point technique were presented and developed to compute the magnetic field in transformers and electrical machines with hysteresis effects taken into account.. An effective numerical model is required to simulate the hysteretic properties of the ferromagnetic material accurately. A comparison of the measured results and the simulated ones are made, and the good agreement verifies the correctness of the proposed method
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