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Recently, great effort has been put into improving the performance of particle accelerator magnets by selecting materials with appropriate magnetic properties. The chemical composition and the manufacturing process of these materials determine their magnetic properties. This paper deals with a comparative analysis of the electric and magnetic properties of a broad range of electrical steels and correlates...
The analytical model for hysteresis cycle of soft magnetic materials using arcs of circle and straight line segments presented in [2] has been improved to minimize the error between the measured and modelled one. The LabVIEW program has been improved to be more user-friendly. For the new model presented in this paper, the data that are necessary for modelling are automatically collected from the measured...
This paper proposes a new model of asymmetric three-phase three legged transformers for the simulation of transient operation. In the current literature, several models yield incomplete and inaccurate results, both in the steady-state and transient operations. Among all these models, the idea of using a PI model [5] seemed the most promising. We have improved the model by taking into account the fast...
In this paper we carried out dynamical modeling studies and analyzed of the three-phase three legged transformers of the laboratory. The unbalance and hysteresis phenomenon are also treated and two models are used, namely the T- and PI-models. The PI-model as developed by De-Léon et Al [14] in the EMTP simulator (Electro-Magnetic Transients Program) does not give good results. That is why we proceeded...
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