Results 41 to 50 of about 332,683 (289)

Turn-to-turn fault protection technique for synchronous machines without additional voltage transformers [PDF]

, 2017
This paper presents a novel protection technique for the detection of inter-turn faults in synchronous machines. It is based on the calculation of voltage in the stator windings from the usual phases and neutral voltage, typically available in ...
Gyftakis, Konstantinos N., Platero , Carlos A., Redondo, Marte   +2 more
core   +1 more source

Calculation and Analysis of Rotor Thermal Static Field for Inter-Turn Short Circuit of Large Hydro-Generator Excitation Winding

Energies, 2019
Rotor winding inter-turn short circuit a common fault in hydro-generators. This fault would change the temperature, stress, and other thermal fields of a rotor and threaten the safe operation of the generator.
Junqing Li, Luo Wang
doaj   +1 more source

Research on Fault Diagnosis Algorithm of Ship Electric Propulsion Motor

Applied Sciences, 2023
The permanent magnet synchronous motor (PMSM) has been used in electric propulsion and other fields. However, it is prone to the stator winding inter-turn short-circuit, and if no effective measures are taken, the ship’s power system will be paralyzed ...
Fengxin Ma, Liang Qi, Shuxia Ye, Yuting Chen, Han Xiao, Shankai Li   +5 more
doaj   +1 more source

An accurate inter-turn short circuit faults model dedicated to induction motors

International Journal of Electrical and Computer Engineering (IJECE), 2021
Safety, disponibility and continuity of industrial systems are major issue in maintenance. In the last decades, these points are the important axes in the field of research. In fact, in many industrial processes research has picked up a fervent place and a particular importance in the area of fault diagnosis of electrical machines, in fact, a fault ...
Fatima Babaa, Ouafae Bennis
openaire   +2 more sources

Online detection of inter‐turn short‐circuit fault in dual‐redundancy permanent magnet synchronous motor

IET Electric Power Applications, 2021
An online detection method for the inter‐turn short‐circuit fault (ISCF) of a dual‐redundancy permanent magnet synchronous motor (DRPMSM) is proposed.
Yukai Yang, Yiguang Chen, Weijie Hao
doaj   +1 more source

Safety Risk of Synchronous Condenser with Typical Asymmetric Magnetic Field Faults Under Extreme Operating Conditions

Zhongguo dianli, 2023
Under typical magnetic field asymmetry faults, the synchronous condenser has an increase in unbalance force formed by forced excitation and tripping risk.
Guizhou CAO, Erqiang CHEN, Xuanjie FAN, Yucai WU, Zhenping LI, Shuhuai SHI   +5 more
doaj   +1 more source

Improved transient simulation of salient-pole synchronous generators with internal and ground faults in the stator winding [PDF]

, 2005
An improved model for simulating the transient behavior of salient-pole synchronous generators with internal and ground faults in the stator winding is established using the multi-loop circuit method.
Bi, D.Q., Howe, D., Wang, W.J., Wang, X.H., Zhu, Z.Q.   +4 more
core   +1 more source

Experimental Methods and Equivalence Research on Inter-Turn Short Circuits in Power Transformers

Energies
Inter-turn short-circuit faults in power transformers generate enormous short-circuit currents within the affected turns, making full-scale experimental investigations impractical.
Xuelong Li, Chun Yang, Yuanming Shuai, Dongyang Wu, Zhengyang Zhang, Lanjun Yang   +5 more
doaj   +1 more source

Quantum critical states and phase transitions in the presence of non equilibrium noise [PDF]

, 2010
Quantum critical points are characterized by scale invariant correlations and correspondingly long ranged entanglement. As such, they present fascinating examples of quantum states of matter, the study of which has been an important theme in modern ...
A Kamenev, A Mitra, A Polkovnikov, A Schmidt, AJ Daley, AJ Leggett, AO Cladeira, C Kollath, CL Kane, D Clément, D Porras, DE Feldman, Ehud Altman, Emanuele G. Dalla Torre, Eugene Demler, FDM Haldane, G Ithier, G Morigi, G Refael, G Zimmerli, I García-Mata, J Clarke, J Labaziewicz, J Steinhauer, J Stenger, K Winkler, K-K Ni, L Deslauriers, MPA Fisher, R Blatt, S Chakravarty, S Diehl, S Sachdev, SL Sondhi, T Antal, T Giamarchi, T Lahaye, Thierry Giamarchi   +37 more
core   +3 more sources

Less-conventional low-consumption galvanic separated MOSFET-IGBT gate drive supply [PDF]

, 2017
A simple half-bridge, galvanic separated power supply which can be short circuit proof is proposed for gate driver local supplies. The supply is made while hacking a common mode type filter as a transformer, as the transformer shows a good insulation, it
Bikorimana, Jean Marie Vianney, Van den Bossche, Alex   +1 more
core   +3 more sources