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Information × Registration Number 0211U001359, 0108U000627 , R & D reports Title Development of modelling methods of dynamic processes in ferromagnetic media popup.stage_title Head Zirka Sergey Evgenievich, Registration Date 31-01-2011 Organization Dniepropetrovsk national university popup.description2 Subject of study is magnetization processes in conducting and powder ferromagnetic cores. The aim of the study is to improve the methods of analyzing transients in the ferromagnetic media in the wide range of the conducting ferromagnetic material resistivities. The method of the study is numerical modeling, which employs static hysteresis models and dynamic models that reproduce a time delay of the magnetic induction at a given point of the medium with respect to the magnetic field at this point. A method of taking into account the magnetic viscosity has been improved, as well as the excess loss representation caused by the viscosity in the materials with fine and coarse domain structures. A method of dividing total energy loss in the ferromagnetic sheet into components (hysteresis loss, classical eddy-current loss and excess loss) has been proposed. The basis for an engineering method of predicting total loss under magnetization voltage of an arbitrary shape was developed based on the splitting total loss into components. A simplified magnetization model (thin sheet model) has been developed. The model allows one to incorporate it into simulator of an external electrical circuit. The models developed can be extended to the core as a whole and combined in a natural way with equations of an external electrical circuit. The approach implemented in the models forms a scientific basis for the applied studies in the area of the design and optimization of electrical machines and transformers of different type. Results of the study can be used in organizations, which are involved in the design and manufacturing of electrical equipment (transformers, electrical machines, etc.). Product Description popup.authors Мороз Юрій Іванович popup.nrat_date 2020-04-02 Close