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This paper discusses the regulation of a stand-alone wind power plant based on a self-excitation squired-cage induction machine. A shunt connected active rectifier and a controllable dump load are used for regulation of the voltage and frequency. A control scheme for the active rectifier with independent control of active and reactive power is presented. The feasibility of the proposed system is verified by simulations. Source

Filipowicz W.,Gdynia Maritime University
Przeglad Elektrotechniczny | Year: 2012

Uncertain data are used in navigation, thanks to the nautical knowledge position is then fixed and evaluated. Data processing is rather limited since traditional mathematical apparatus based on probability theory with necessary assumptions is not flexible enough to include knowledge and ignorance into position fixing calculation scheme. Limited possibility is available regarding fix accuracy evaluation. In the paper possibilistic extension of Mathematical Theory of Evidence is explored as new platform enabling modeling and solving problems with uncertainty. Source

In the paper the new form of the average electrothermal model of the boost converter dedicated for SPICE is proposed. To the description of the properties of considered converter the previously elaborated by the author the electrothermal average model of the diode-transistor switch and new average non-linear electrothermal model of the choking-coil are applied. The form of the new model of the choking-coil is presented and some results of calculations of non-isothermal characteristics of considered converter obtained by means of the new model of choking-coil and average models of this converter well-known from the literature, are presented. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source

The method of analysis and classification of time-vary signals based on the adaptive signal decomposition, using the matching pursuit algorithm was presented. Determinants of the accuracy of the adaptive approximation of measuring signal, representing the magnetic field induction waveform were considered. The way of identification of the sources of the low-frequency magnetic field on the basis of an analysis of time-frequency structures, occurring in the adaptive spectrogram was proposed. © 2015, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source

Paper presents continuous average model of power surge compensator, based on a four level diode clamped inverter. The model is suitable for synthesis of control algorithms, as well for simulation of ship’s power conditioning unit designed to an active power surge smoothing in isolated power plants. © 2016, Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved. Source

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