Plenary Session Speakers
Prof. Zbigniew Krzeminski

Prof. Zbigniew Krzeminski,

Gdansk University of Technology, Poland

Zbigniew Krzeminski received a Ph.D. degree from the Technical University of Łódź, Poland, in 1983 and the D.Sc. degree from Silesian Technical University, Gliwice, Poland, in 1991.
Since 1993 he is Professor of Electrical Engineering at Gdansk University of Technology.
His main areas of research interest are modeling and simulation of electric machines, control of high-performance electric drives, signal processor-based control systems.
Prof. Z. Krzeminski is the author of 2 books, 6 patents and more as 235 papers.
The main achievements of prof. Z. Krzeminski are the development of multiscalar models of the AC machines, which are the generalized form of known vector models, and the invention of variable observer for the AC machines used in sensorless drives.

True smart grid with voltage and current controller


Connecting distributed energy sources to low-voltage power grids causes problems of voltage variability and asymmetry, especially in the case of long distances from the power transformer.

In extreme cases, it is necessary to reduce the power generated by the source when giving energy to the grid.

The solution to this problem is the use of an electronic power regulator consisting of two inverters, one of which is used to add, with the help of an add transformer, voltage of regulated small amplitude.

The second inverter is used to supply active energy to the control system and to correct reactive power consumption in the assumed range.