Estimation of ripple and inductance roll off when using powdered iron core inductors
Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2016
Pages: 8Language: englishTyp: PDF
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Authors:
Chandra Mouli, Gautham Ram; Bauer, Pavol; Zeman, Miro (Department of Electrical Sustainable Energy, Delft University of Technology, Netherlands)
Schijffelen, Jos (Power Research Electronics BV, Netherlands)
Abstract:
Magnetic cores like powdered iron cores have a variable permeability, which is dependent on the magnetic motive force of the inductor windings. When inductors are designed using such materials, the inductance varies as a function of the inductor current. This causes a non-linear current to flow through the inductor. In this paper, mathematical derivation of the inductancecurrent relationship is derived for such inductors. The model is applied for a KoolMmu(r) powdered iron core and the results are verified experimentally using an interleaved boost converter.