Johann W. Kolar

TL;DR: In this article, the authors investigated the distortions caused by the pulsed operation of a group of power supplies feeding an Electrostatic Precipitator (ESP), and means for improving the line quality are proposed.

TL;DR: The comparative evaluation of the investigated control structures reveals that the combination of capacitor current feedback, inductor voltage feed-forward, and reference prediction performs best for the control of both, output voltage and output current.

TL;DR: In this paper, the authors present a 12.5kW 99.35% efficient three-phase inverter using commercially available low-voltage silicon power semiconductors, where a hybrid seven-level topology is employed, with each phase comprising an Active Neutral Point Clamped (ANPC) front-end connected to a Flying Capacitor Converter (FCC) stage, which leads to a low overall volume and weight.

TL;DR: In this article, a bidirectional AC DC converter is analyzed and the converter applies a half bridge thyristor rectifier and a recuperating bridge instead of a braking resistor.

TL;DR: In this paper, a transversal flux eddy current sensor position measurement technique for rotors in high-speed electrical drives using active magnetic bearings is proposed, which shows a lower circuit complexity and allows fulfilling the high bandwidth needs of highly dynamic systems as well as the improved accuracy necessary in precision bearings.