Efficient nonlinear inductors for PV inverters and active PFC

Conference: CIPS 2012 - 7th International Conference on Integrated Power Electronics Systems
03/06/2012 - 03/08/2012 at Nuremberg, Germany

Proceedings: CIPS 2012

Pages: 4Language: englishTyp: PDF

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Stadler, Alexander (STS Spezial-Transformatoren-Stockach GmbH & Co. KG, Am Krottenbühl 1, 78333 Stockach, Germany)
Gulden, Christof

In this paper, a practical method is presented, how to adjust the inductance curve of a nonlinear (saturable) inductor with respect to a desired shape. For these purposes, a nonlinear model was developed based on finite element method (FEM). It is shown how a highly efficient construction with low stray fields and maximum package density can be achieved. Different prototype inductors were realized to illustrate the practical capability for photovoltaic (PV) inverter as well as active power factor correction (PFC) applications. All simulation is verified by means of experimental data drawn from electrical measurements.