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Improved analytical modeling of conductive losses in gapped high-frequency inductors

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1 Author(s)
Wallmeier, P. ; ASCOM Energy Syst. GmbH, Soest, Germany

An improved method to predict conductive losses in gapped high-frequency inductors is presented and used for parametrization of an equivalent small-signal circuit model. The method is based on the superposition of power losses resulting from the well-known one-dimensional (1-D) field calculation and losses due to eddy currents caused by the fringing field of air gaps determined from novel analytical two-dimensional field calculations. Losses due to reactive currents in the windings caused by self capacitances are also considered. A greatly improved accuracy compared to 1-D analysis is proved by measurements

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Industry Applications, IEEE Transactions on  (Volume:37 ,  Issue: 4 )