Johann W. Kolar

TL;DR: In this paper, a generalized description and an overview of degrees of freedom and selected measures for efficiency improvement of power electronics converters is given, and a detailed analysis of the possibilities, of minimizing the semiconductor losses, the losses of the passive components including the EMI filter, and the power requirements of auxiliary systems in the course of the design process are given.

TL;DR: In this article, a comparison of the converter concepts, with respect to their fundamental, topology-related characteristics, complexity, control and efficiency, is presented. And a new unidirectional three-level matrix converter topology is proposed.

TL;DR: The structure of the power circuit of a new single-stage three-phase boost-type pulsewidth modulated (PWM) rectifier system (VIENNA Rectifier II) is developed and a straightforward space- vector-oriented method for the system control is proposed which guarantees a symmetric magnetization of the transformer.

TL;DR: In this paper, a three-phase PWM rectifier and a three phase PWM inverter are coupled via two four-quadrant full-bridge converter cells and a high-frequency isolation transformer.

TL;DR: In this paper, a generalized description and an overview of degrees of freedom and selected measures for efficiency improvement of power electronics converters is given, and a detailed analysis of the possibilities, of minimizing the semiconductor losses, the losses of the passive components including the EMI filter, and the power requirements of auxiliary systems in the course of the design process are given.