Sorin Dan Grigorescu

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Engineering education by its nature is a costly program in university environments. Perhaps the most costly component is the laboratory facility, usually consisting of specialized equipment. Effective instruction of some topics in power engineering education requires experience with actual equipment, rather than small-scale replicas or simulation. In this(More)
The use of the power and energy functional in the analysis of the electric circuits makes it possible to appreciate the energetic equilibrium state attained in the circuit at a certain moment. This paper is concerned with a demonstration of the principle of minimum dissipated active power for the steady state circuits under nonsinusoidal conditions. It is(More)
Fast Fourier Transform (FFT) computing may be improved using two ways: the first way consists in packing two separate real functions into the complex input array in such a way that their individual transforms can be separated from the result; the second method used to improve the FFT computation consists in packing the real input of length N array cleverly,(More)
The paper presents an efficient computation sensitivity method for the analog two-port linear networks, without using the circuit topology. It is consider the steady state non-sinusoidal regime and the algorithm analyze the sensitivities of the network functions correlating it to the relative values which characterize the input current and voltage(More)
This paper describes a system for power supply, monitoring, control and communication for isolated temporary habitats. The system described consists in six modules and offers all the necessary equipment in order to operate a fully functional camp.
A new method for calculation of first order sensitivity and sensitivity groups for Multiple FeedBack (MFB) filter in non-sinusoidal regime is presented. Such a group of linear dependent parameters is defined the relative input values of current and voltage harmonics. The interdependence of the various network sensitivities for a given network needs special(More)
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