Jan T. Bialasiewicz

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The use of distributed energy resources is increasingly being pursued as a supplement and an alternative to large conventional central power stations. The specification of a powerelectronic interface is subject to requirements related not only to the renewable energy source itself but also to its effects on the power-system operation, especially where the(More)
A substantial increase of photovoltaic (PV) power generators installations has taken place in recent years, due to the increasing efficiency of solar cells as well as the improvements of manufacturing technology of solar panels. These generators are both grid-connected and stand-alone applications. We present an overview of the essential research results.(More)
It has been demonstrated that modulating the switching frequency of a power converter is a valuable way for reducing the electromagnetic interference (EMI) due to the switching process. Since we are considering a signal whose frequency content varies with time, wavelets are well suited to analyze the performance of such techniques. In this paper, we(More)
In this paper, we present a new approach to evaluation of signal integrity that is based on signal energy density as a function of time and frequency, represented by its wavelet scalogram. Using signal integrity ratio and cumulative energy ratio, we illustrate signal integrity analysis with simulated examples, followed by the demonstration of their(More)
W IND ENERGY systems have attracted considerable attention due to growing environmental concerns, increasing cost of fossil fuel, and concern about the long-term supply of oil and natural gas. The increasing penetration of wind energy into the power system has, however, produced stringent modifications in grid codes worldwide. Nowadays, it is expected that(More)
A new approach to adaptive model reference control, based on Lyapunov's direct method, is presented. A design procedure for single output systems has been developed and the results verified by computer simulation. The algorithm presented in this paper guarantees asymptotic stability, provided that the transfer function of the equivalent error system is(More)
Cyber-Physical Systems (CPS) require tools that enable development of design methodology that supports analysis and modeling of Interaction Dynamics of Concurrent Processes (IDCP) represented by the measurement data provided by smart acquisition systems. In this paper, are presented some results of the project aiming at the development of algorithms and(More)