A Novel Detailed Analysis of the Boost Converter Utilizing Nonlinear Inductance and Capacitance

Conference: PCIM Europe 2018 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/05/2018 - 06/07/2018 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2018

Pages: 8Language: englishTyp: PDF

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Mantzanas, Panagiotis; Bayrakdar, Erdi; Kuebrich, Daniel; Duerbaum, Thomas (Chair of Electromagnetic Fields, Friedrich Alexander University of Erlangen, Germany)

Magnetic components are essential in switched mode power supplies as they strongly influence the converter efficiency. Magnetic components inherently have a nonlinear inductance, which can be used beneficially. In addition, the parasitic capacitances of semiconductor devices introduce additional nonlinearities. Only by incorporating these nonlinearities in the analysis, a proper converter design is guaranteed. Thus, this paper proposes a novel calculation method for the boost converter including the nonlinear behavior of inductance and capacitances. The proposed calculation method combines a high computational efficiency as well as a high accuracy. Finally, a boost PFC converter with stepped air-gap inductor is investigated. Measurements confirm a total loss reduction of up to 18% in comparison to a conventional boost PFC.