Johann W. Kolar

TL;DR: In this article, the authors proposed a two-third modulation strategy for a buck-boost (bB) current source inverter to achieve the desired 3-Φ sinusoidal load currents by switching only two out of the three phases of the output stage.

TL;DR: The modeling and control of a three-phase three-switch buck-type rectifier system with integrated boost output stage (voltage range extended 4-switch rectifier) is analyzed and the stability of the closed loop system is discussed and the robust operation of the system is verified by measurements on a 5-kW prototype.

TL;DR: In this article, a detailed analysis of the common-mode currents appearing in cascaded cells converter systems as a consequence of steep changes of the cells' potentials caused by the individual cells' switching actions is presented.

TL;DR: In this article, a synergetic control of both converter stages was proposed for varying the DC-link voltage with six times the mains frequency, such that the currents of two mains phases are shaped sinusoidally.

TL;DR: In this article, a setup for performing power cycling tests of IGBT modules for the purpose of reliability analysis is presented, where experimental data for the parameterization and verification of a newly developed physical model of solder deformation leading to the failure of power electronic devices is provided.