Results 21 to 30 of about 5,514,435 (230)

Space charge dynamics in oil and thick pressboard combined system under polarity reversal voltage [PDF]

, 2014
In this study, the space charge dynamics in an oil and oil impregnated pressboard combined insulation system are investigated by the means of pulsed electroacoustic (PEA) technique under voltage polarity reversal conditions. To be closer to the real case
Hao, Miao, Gordon Wilson, Yuan Zhou, George Chen, Wilson, Gordon, Miao Hao, Paul Jarman, Zhou, Yuan, Jarman, Paul, Chen, George   +9 more
core   +1 more source

EXPERIMENTAL RESEARCH OF MAGNETIC FIELD SENSORS SPATIAL ARRANGEMENT INFLUENCE ON EFFICIENCY OF CLOSED LOOP OF ACTIVE SCREENING SYSTEM OF MAGNETIC FIELD OF POWER LINE

Electrical engineering & Electromechanics, 2017
Purpose. Experimental research of magnetic field sensors spatial arrangement influence on efficiency of closed loop active screening system by magnetic field of high voltage power lines developed a three-phase single-circuit high voltage power lines ...
B. I. Kuznetsov, T. B. Nikitina, A. V. Voloshko, I. V. Bovdyj, E. V. Vinichenko, B. B. Kobilyanskiy   +5 more
doaj   +1 more source

Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable [PDF]

, 2009
A well-known fact of the existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables.
Choo, Wilson, Swingler, Steve, Chen, George   +2 more
core   +2 more sources

Identification of a 7-phase claw-pole starter-alternator for a micro-hybrid automotive application [PDF]

, 2008
This paper deals with the identification of a new high power starter-alternator system, using both: a Finite Element Method (FEM) modeling and an experimental vector control.
BOUSCAYROL, Alain, A. Bouscayrol, T. Henneron, MIPO, Jean-Claude, J.C. Mipo, DUBUS, Jean-Marc, BRUYERE, Antoine, HENNERON, Thomas, LOCMENT, Fabrice, Dubus,, J.M, E. Semail, A. Bruyere, F. Locment, SEMAIL, Eric, J.M. Dubus   +14 more
core   +1 more source

A High Performance Space Vector Modulation - Direct Torque Controlled Induction Machine Drive based on Stator Flux Orientation Technique

Advances in Electrical and Computer Engineering, 2009
This paper proposes the design and implementation of a novel direct torque controlled induction machine drive system. The control system enjoys the advantages of stator vector control and conventional direct torque control and avoids some of the ...
BELMADANI, B., BELARBI, A. W., BOUNADJA, M.   +2 more
doaj   +1 more source

Direct Flux Control for Stand-Alone Operation Brushless Doubly Fed Induction Generators Using a Resonant-Based Sliding-Mode Control Approach

Energies, 2018
In this paper, a novel voltage control strategy for stand-alone operation brushless doubly fed induction generators for variable speed constant frequency wind energy conversion systems was presented and discussed.
Kai Ji, Shenghua Huang
doaj   +1 more source

Space Charge Formation and its Modified Electric Field under Applied Voltage Reversal and Temperature Gradient in XLPE Cable [PDF]

, 2008
The results of space charge evolution in cross-linked polyethylene power cables under dc electrical field at a uniform temperature and during external voltage polarity reversal are presented in the paper.
Fu, Mingli, Dissado, L. A., Mingli Fu (6837953), Fothergill, J.C., Len A. Dissado (7583801), George Chen (179705), Chen, G., Fu, M., Fothergill, J., Dissado, L.A., John C. Fothergill (7581362), Chen, George   +11 more
core   +1 more source

Performance Evaluation of Variable Structure Controller Based on Sliding Mode Technique for a Grid-Connected Solar Network

IEEE Access, 2019
Generating electric power from solar energy is a vastly growing technology worldwide. This paper investigates and evaluates the performance of a solar power generation system utilizing variable structure control with sliding mode for maximum power point ...
Hazem F. Feshara, Amr M. Ibrahim, Noha H. El-Amary, Soliman M. Sharaf   +3 more
doaj   +1 more source

A Modified Vector Space Model For Protein Retrieval. [PDF]

, 2007
This paper provides an enhancement of an existing method of information retrieval which is a modification of Vector Space Model for information retrieval.
Abdul Rashid, Nur'Aini, Abdullah, Rosni, Abual-Rub, Mohammed Said   +2 more
core   +1 more source

PWM-based Flux linkage estimation for permanent magnet synchronous machines

The Journal of Engineering, 2019
Monitoring of rotor temperature in permanent magnet synchronous machines (PMSM) is of great importance as high temperature could cause partial or even irreversible demagnetisation of the permanent magnets (PMs).
Shuai Xiao, Antonio Griffo
doaj   +1 more source