HF Characterization and Nonlinear Modeling of a Gapped Toroidal Magnetic Structure
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Date
2006-09Type
- Journal Article
ETH Bibliography
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Abstract
The frequency dependent characteristics of a gapped toroidal structure are extracted empirically over a bandwidth that exceeds 30MHz. The analysis is complicated due to nonlinear flux distributions, magnetic properties of the core material, leakage inductance, stray capacitances, and eddy currents in the windings. A permeance model of the core is implemented to model the magnetic circuit. The model includes a linear lumped element equivalent circuit to approximate the nonlinear complex permeability of the core, which was measured empirically. Stray capacitance and inductance of the winding are also modeled. A gyrator is used to couple the electric and magnetic models for circuit simulation. The measured and simulated results of open-circuit impedance from the secondary winding and the transimpedance gain (V/A) of the current sensor are compared and discussed Show more
Publication status
publishedExternal links
Journal / series
IEEE Transactions on Power ElectronicsVolume
Pages / Article No.
Publisher
IEEESubject
Gapped toroidal structure; Nonlinear flux distributionsOrganisational unit
03573 - Kolar, Johann W. / Kolar, Johann W.
Related publications and datasets
Is new version of: http://hdl.handle.net/20.500.11850/162629
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ETH Bibliography
yes
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