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Search results for: transformer
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Year: 2011, Volume: 11, Number: 2
... 2, 2011 A New Method for Detection and Evaluation of Winding Mechanical Faults in Transformer through Transfer Function Measurements Mehdi BIGDELI1*, Mehdi VAKILIAN2, and Ebrahim RAHIMPOUR3 ... University of Technology, Tehran, Iran 3 ABB AG, Power Products Division, Transformers, Bad Honnef, Germany* Email: m.bigdeli@srbiau.ac.ir 1 Abstract — ...
Year: 2011, Volume: 11, Number: 2
... The proposed system the input and the output current can be continuous. From the PFC power circuit as shown in Fig.2 an isolation iS L1 C1 C2 L2 iO transformer is used to isolate between load and the AC line. The power converter is designed to operate in a continuous iL1 iL2 vac SW1 D1 vO conduction mode ...
Year: 2011, Volume: 11, Number: 2
... the enlargement process by a Let the initial network and its graph G 0 histogram be: tolerable complexity of the Petri net coverability tree. In Fig.1, the transformers are not explicitly figured, therefore 74 Advances in Electrical and Computer Engineering Volume 11, Number 2, 2011 the buses' voltage can be different (i.e ...
Year: 2011, Volume: 11, Number: 2
... generating higher or lower where the low frequency PWM pulse is modulating a higher resonant frequency required by the ZVS inverter's intensity radiations, as demanded. The CW commercial transformer. The method presented allows a continuous magnetron (and its conventional power supply) is not control of both power and energy (duty-cycle) at the inverter's ...
Year: 2011, Volume: 11, Number: 2
... location of the RPFC is determined. conventional transformers. The utilization of the shunt transformer makes RPFC be able to control reactive power Index Terms — flexible ac transmission ... mainly of because of the cost considerations. Among these FACTS two rotary phase shifting transformers (RPST) and two controllers, PST has the lowest cost and simplest ...
126. Performances of Gopinath Flux Observer Used in Direct Field Oriented Control of Induction Machines
Year: 2011, Volume: 11, Number: 1
... rotoric speed we must determine the components of the stator current. coefficients for the estimator gate (g a, g b). The two poles The axes transformer block "TA", computes the rotation must follow the stability condition of the system, meaning with the angle β of the active I A and the ...
Year: 2011, Volume: 11, Number: 1
... , May 2009. blood plasma: statistical and fractal approaches," Semicond. Physics, [51] Yu. A. Ushenko, "Skin as a transformer of the polarization structure Quantum Electronics&Optoelectronics, vol. 13(3 ), 189-201, 2010. of laser radiation," Optics and Spectroscopy vol ...
Year: 2010, Volume: 10, Issue: 4
... maximum energy from the wind integrating WECS into electrical grids. A few research fluctuation, control the active and reactive power and compensate the grid harmonic currents. The transformer is Digital Object Identifier 10.4316/AECE.2010.04027 167 1582-7445© 2010 AECE Advances in Electrical and Computer Engineering Volume 10, Number 4, 2010 Grid III. CONTROL ...
Year: 2010, Volume: 10, Issue: 4
... field geographic latitude, the ship course and the magnetic are: control of the magnetic field of the military ships, control of parasite magnetic field produced by power transformers and properties of the construction materials. The values of the the electrical networks, protection of the mass spectrometers, components of the ship permanent and inductive electronic ...
Year: 2010, Volume: 10, Issue: 4
... For this reason, the angle between the with the help of a 12 volt transformer and sensors connected current and the voltage changes between 0 ï‚° and 90 ï‚° ... inductive loads such detector have been applied at the inputs of the as generators, transformers, coils and motors is tried to be microcontroller and the data crossing at ...
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