Calculation Model for the Transient Voltage Distribution in Inductor Windings Effected by High dv/dt

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 5Sprache: EnglischTyp: PDF

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Reissenweber, Lukas; Stadler, Alexander (Coburg University of Applied Sciences and Arts, Germany)

In order to design inductors for high switching frequencies and the associated fast voltage increases (generated by SiC and GaN transistors), the resulting transient voltage distribution must be known. Therefore, a calculation model based on an equivalent circuit is presented. The complex impedance characteristics, the current and the potential distribution of an inductor can be calculated for any voltage signal using a simple matrix calculation. The matrix calculation is performed via Matlab(r), the required parameters for the capacitance and inductance matrix and the DC resistance are calculated by means of a commercial FEM software. The simulation results of the complex impedance and the calculated voltage distribution at rectangular voltage signals are compared with measurements on prototypes of inductors with different winding arrangements.