Johann W. Kolar

TL;DR: In this article, the design of a differential-mode EMC input filter for a three-phase AC-DC-AC very sparse matrix converter intended for electrical machine drive applications is discussed.

TL;DR: In this article, a forced air-cooled, 400kHz, 10kW Vienna rectifier with a power density of 8.5kW/liter is presented, where the switching frequency is increased to reduce the EMI filter volume.

TL;DR: In this paper, a comprehensive characterization of the X6S MLCC and the CeraLink large-signal performance is carried out by means of experimental measurements, which enables an accurate dimensioning of the power pulsation buffer capacitor and an estimate of the capacitor losses during operation.

TL;DR: A Voltage Source Converter (VSC) with Neutral-Point-Clamped (NPC) topology with one or more phases, comprises an intermediate DC circuit having at least a first and a second capacitance connected in series between a positive terminal and a negative terminal, providing a central tap terminal between both capacitances, and at least one sub-circuit for generating one phase of an alternating voltage, each subcircuit comprising an AC terminal for supplying a pulsed voltage as discussed by the authors.

TL;DR: In this article, a gate supply with a capacitive compensated air transformer for medium voltage systems is presented, where the air transformer windings are realized as tracks on a circuit board (PCB).