Title :
Eddy current losses in SMPS transformers round wire windings: a semi-analytical closed-form formula
Author :
Robert, Frédéric ; Sprooten, Jonathan ; Mathys, Pierre ; Schauwers, Jean-Pierre ; Velaerts, Bruno
Author_Institution :
Univ. Libre de Bruxelles
Abstract :
We provide a new closed-form formula that instantly calculates the 2D high-frequency ohmic losses (skin and proximity effects) in round wire windings. It has been obtained by overwriting the classical definition (shown to be erroneous) of the layer copper factor introduced in 1D analytical theories. Compared to similar previous formulas, the average error is divided by a factor of thousand. Experimental validation is provided
Keywords :
eddy current losses; proximity effect (superconductivity); skin effect; switched mode power supplies; transformer windings; 2D high-frequency ohmic losses; SMPS transformers; eddy current losses; layer copper factor; proximity effects; round wire windings; skin effects; Conductors; Copper; Eddy currents; Frequency; Proximity effect; Skin; Switched-mode power supply; Transformers; Uniform resource locators; Wire; Modelling; Power Supply; Simulation; Transformer;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219299
