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Search results for: fault
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Year: 2010, Volume: 10, Issue: 1
... W 2 ï£ W s Cu ï£¸ï£ 0 p  too. Ideally, in default of magnetic leakages and drop  (3) voltages corresponding to winding resistance ... . This may cause intolerable vibrations and U sRd U sRd noise or possible mechanical faults. These variable torques ψ sRd= 2 (ν sr+ jsωs) ...
Year: 2010, Volume: 10, Issue: 1
... . transient and steady state operation. Using the simulation [13] A. Koochaki, S. M. Kouhsari, G. Ghanavati, "Transformer Internal Faults Simulation", Advances in Electrical and Computer program developed by the authors, no convergence errors Engineering, Suceava, Romania, Vol. 8, No 2 ...
Year: 2010, Volume: 10, Issue: 1
... . adopted procedure for PD pattern recognition for over a The PD monitoring has been recognized as one of the major decade. Based on the report of the transformer faults, insulation monitoring methods. The characteristics of the various authors reported different types of single PD sources partial discharge signals generated by a particular insulation with different electrode ...
Year: 2009, Volume: 9, Issue: 3
... the single-terminal data algorithms is that location of the single-phased faults which uses only voltage they need just one terminal ... Computer Engineering Volume 9, Number 3, 2009 Single-phased Fault Location on Transmission Lines Using Unsynchronized Voltages Marcel ISTRATE1 ... by Figure 2. The frequency spectrum and time-evolution of faulty phase oscillations. In the case of transient voltages ...
Year: 2009, Volume: 9, Issue: 3
... , fuzzy logic, the research is to prevent system faults. Online fault diagnosis neuro-fuzzy schemes, evolutionary programming ... , Number 3, 2009 Graphical User Interface Aided Online Fault Diagnosis of Electric Motor- DC Motor Case Study ... there are three types of faults. between nominal and faulty system. The residuals are These are presented below ...
Year: 2009, Volume: 9, Issue: 3
... disadvantages as compared with the inexpensive three – phase rectifiers with diodes: larger switching losses, high per – unit current rating, poor immunity to shoot – through faults, higher cost and less reliability [1 – 2]. Figure 2. Converter for two – quadrant with RNSIC; (a) Configuration; ( ...
Year: 2009, Volume: 9, Issue: 2
... [5] K. Lazetic, M. Prsa, "Calculation of Ground fault current numerical approaches of how to determine the level of distribution", 14th ... , by the use of buried in multilayer soil due to magnetic fields from nearby faulted a family of orthogonal polynomials that generates a power lines", IEEE Transaction ...
Year: 2009, Volume: 9, Issue: 2
... are basically simple and relatively cheap devices, flow through them. Fuses can be designed to interrupt safely although their behaviour is somewhat more complex than the very highest fault currents that may be encountered in may be generally realised. Surprisingly, the arcing process service, and, because of the rapidity of their operation in which ...
Year: 2009, Volume: 9, Issue: 2
... ] the ... complexities of each type definition in the schema are <wsdl:types> different according to their structures. So, <s :schema elementFormDefault="qualified" targetNamespace="http://terraserver-usa.com/LandmarkServer/"> wt= wc, if the type is complex type definition ( ...
250. Radiofrequency Field Distribution Assessment in Indoor Areas Covered by Wireless Local Area Networks
Year: 2009, Volume: 9, Issue: 1
... mode: in IEEE 802.11b a Router supporting IEEE 802.11g standard at 54Mbps. Its Direct Sequence Spread Spectrum (DSSS) scheme is used, settings were generally the default ones, with the exception while in IEEE 802.11g Orthogonal Frequency Division where we otherwise specify. The AP settings with influence Multiplex (OFDM) scheme is implemented ...
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