1. Centro de Electrónica Industrial (CEI) | Universidad Politécnica de Madrid | cei@upm.es | www.cei.upm.es In magnetic components for power electronics applications the utilization of high accuracy models for losses estimation is desirable. Usually high accuracy models take a considerable calculation time which difficult their use on early stages of design, such as an optimization process, where a high number of solutions must be considered in relatively short time. To compensate this situation this work aims to develop new simple and high accuracy models to estimate losses that can be easily integrated on magnetic components design and optimization tools without penalizing the calculation time required. In magnetic components for power electronics applications the utilization of high accuracy models for losses estimation is desirable. Usually high accuracy models take a considerable calculation time which difficult their use on early stages of design, such as an optimization process, where a high number of solutions must be considered in relatively short time. To compensate this situation this work aims to develop new simple and high accuracy models to estimate losses that can be easily integrated on magnetic components design and optimization tools without penalizing the calculation time required. BRIEF INTRODUCTION WINDING LOSSES For accurate calculation of losses in magnetic components for power electronics, the effects of the frequency over the component need to be considered. However, the evaluation of these effects will increase the complexity of the model and the required calculation time, as a result, an optimization process where such models have been integrated could be time consuming. Therefor, is necessary to define simple and high accuracy analytical models,either for core and windings losses, that allow the evaluation of a high number of solutions in short time (being this the main goal of this work). To overcome the errors in the results of losses estimation in magnetic components, and oriented to the integration on design and optimization tools, different approaches are been studied. A simple model for estimate the equivalent winding resistance of magnetic components is proposed. The model is based on information extracted from 2D and 3D FEA simulations and has shown to have very good accuracy. So far, the model had only been applied in core-less components but, since it is based on geometrical and magnetic field parameters, it is valid for any component. Different models for precise core losses estimation are being studied to consider their potential integration on design tools. CONCLUSIONS Project sponsored by Losses Calculations in Magnetic Components F. Holguín Skin effectProximity effect Simple solution Based on modifying the Dowell´s equation. WINDING RESISTANCE Case A Case C Case D In all cases the results are within 2% of error respect of measurements !! RESULTS Case B Analytical approach for the calculation of winding losses in core-less magnetic components