Simulation of processes in an electromagnetic converter with energy loss in the massive magnetic core

Abstract

Simulation of processes in an electromagnetic converter with energy loss in the massive magnetic core is necessary for improvement of converter dynamical models with respect to the energy loss caused by eddy currents and hysteresis. An electromagnet with fixed core position is used as a test model. The energy loss mathematical description is derived with respect to magnetic induction change influence on the effects in the steel magnetic core at varied magnetization frequency. This description is made with respect to core material saturation degree, magnetic flux non-sinusoidal and periodical change and converter input voltage form. The simulation was performed with structured modeling in Matlab Simulink. The major attention is focused on the comparison of different approaches with respect to the quantitatively estimated difference of the results obtained. The examples of electromagnetic converters dynamical models are stated to illustrate energy loss estimation in the massive core and the detailed analysis of electromagnetic processes in different modes using structured modeling methods and aids. The analysis results can be widely used in electromagnetic converters structured dynamical models design. They also can be useful for creation of converters mathematical models to improve simulation accuracy and capabilities extension in dynamical calculations.