555 results found.
Year: 2014, Volume: 14, Number: 3
... electrified railways, the electrical current of the train is systems. Arcing generally occurs at higher speeds, under produced by the sliding contact between the pantograph and increased load, and in cold weather conditions [3]. In most catenary. The quality of the current depends on the reliability of contact between the pantograph and ...
Terms matched: 1 - Score: 3 - 1,144k
Year: 2014, Volume: 14, Number: 3
... Accidental threats: failure of network devices and constant, and the static characteristic of load is considered, unintentional human decisional errors that may thus the network can be ... . Pre-condition: System operational conditions before the Example: A solar storm causes an overload in a materialization of the origin of a blackout, including weather transformer which ...
Terms matched: 2 - Score: 15 - 712k
Year: 2014, Volume: 14, Number: 3
... value is selected to be higher than the harmonic may be high [17],[18], therefore in these cases the zero current due to the load, CT mismatch, or any other relay would be unnecessarily blocked. It has been noted that imbalance. inrush currents of new generation transformers, having cores ...
Terms matched: 1 - Score: 3 - 1,003k
Year: 2014, Volume: 14, Number: 3
... ZL endpoint of the line and the point of irregularity. The whole U- signal returned for open- and short-circuited conditions in Source (S) Cdx Gdx Load (L) V V+ dV -x -directed waves (reflected waves) the LV line is shown in (6) and (7 ), respectively ...
Terms matched: 1 - Score: 5 - 843k
Year: 2014, Volume: 14, Number: 3
... , H. Xie and Y. Ning, "Load modeling for wide Engineering, vol.13, pp.27-32, ... is an estimating coefficient matrix, or named as factor loading matrix. aij (i € 1,Œ ... the initial eigenvalues and their cumulative Bus-33 0.0118 0.0335 0.0297 loadings, see Table III. Bus-34 0.0100 0.0625 0.0553 ...
Terms matched: 3 - Score: 34 - 739k
Year: 2014, Volume: 14, Number: 3
... GmbH, Graz, Austria 3 CETTI, Politehnica University of Bucharest, Romania danvuza@hotmail.com Abstract €” Class D amplifiers find new applications in RFID imposed on the load circuit of LCR type is a square wave systems, because of their high efficiency. Most textbooks that toggles between VS and €“ VS, where VS is ...
Terms matched: 1 - Score: 46 - 800k
Year: 2014, Volume: 14, Number: 3
... mobile network. Our evaluation showed that the burden the load on the mobile network. proposed scheme reduces the ... the number of small our proxy server can be lightly loaded and handle more packets, the thin-client architecture sometimes ... comparison to wired or Wi-Fi networks. Particularly, the loading time on mobile networks. connection establishment phase including ...
Terms matched: 5 - Score: 384 - 1,318k
Year: 2014, Volume: 14, Number: 2
... flux to the rotor structure, the main sources of power losses in these drives load. These algorithms can be generally divided in three are iron (core) ... and their the inverter block, the main sources of power loss are related computational loads is relatively high. to inverter snubbers and semiconductors. However, in many ...
Terms matched: 2 - Score: 35 - 1,028k
Year: 2014, Volume: 14, Number: 2
... Advanced Methods, William Levine, CRC Press U.S.A., pp. 70-1-70-12, 2010. 7 [10] I. Inoan, "Movement control of an unloading machine from a rotary p H v a lu e furnace," Proc. of AQTR 2010, THETA 17th edition, Cluj-Napoca, Romania, 2010, ...
Terms matched: 1 - Score: 3 - 862k
Year: 2014, Volume: 14, Number: 2
... considering the zero injection bus constraint to minimize generator or load. If zero injection bus constraint is not the ... non-linear number of PMUs and their locations in transmission systems loads such as heaters, air conditioners and motors leads ... minimum number of PMUs. But, this technique may loadability limit of the power systems [3]. ...
Terms matched: 3 - Score: 14 - 891k