Results 11 to 20 of about 868,638 (260)
Broken Rotor Bar Fault Detection for Inverter-Fed Induction Motor with Negative-Sequence Current Analysis [PDF]
SensorsThis study examines the effectiveness of negative-sequence current analysis in identifying broken rotor bars for inverter-fed induction motors under different load and speed conditions. To improve diagnostic reliability, inverter-induced harmonics in the
Sarvarbek Ruzimov +3 more
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Turn-to-Turn Fault Diagnosis on Three-Phase Power Transformer Using Hybrid Detection Algorithm
Applied Sciences, 2021 A power transformer (PT) in power generation or transmission is critical to maintaining electrical continuity. Fault detection on a PT is needed, especially of incipient faults, which are often caused by a turn-to-turn fault (TTF) before it develops into
Chien-Hsun Liu +2 more
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Energies, 2022 An inter-turn fault (ITF) is one of the most frequent induction motor faults; thus, many previous works have studied its model and diagnosis. However, previous works, simplifying the specific distorted flux distribution by the ITF, presented induction ...
Seong-Hwan Im, Bon-Gwan Gu
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Practical calculation of asymmetric short circuit current of DFIG connected to distribution network [PDF]
E3S Web of Conferences, 2020 In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed.
Fu Pengwu +4 more
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Active Control Method for Torsional Vibration of DFIG Drive Chain Under Asymmetric Power Grid Fault
IEEE Access, 2020 When the asymmetric fault occurs in power grid, it will cause the oscillation of the electromagnetic torque of the doubly-fed induction generator(DFIG).
Shiji Tian +4 more
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Weak-Grid Tolerant Positive- and Negative-Sequence Current Control of Voltage-Source Converters [PDF]
2021 IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe), 2021 Peer ...
Kukkola, Jarno +4 more
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IEEE Open Journal of the Industrial Electronics Society, 2021 The growing relevance of voltage source converters (VSCs), and the deep impact they have on the development and maintenance of the electrical grid, increase the necessity of further research on how to deal with nonideal grid conditions from the VSCs ...
Pablo Montero-Robina +3 more
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Revista EIA, 2019 This paper studied the use of a new stator current feature for detection of winding and cage bars faults in an induction motor, and presents the experimental validation of a detection and identification scheme using Support Vector Machines (SVM). This validation was performed in a test bed using 2 HP, 4 pole motors in which shorted winding and broken ...
Castillo, Silvia Oviedo +1 more
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International Transactions on Electrical Energy Systems, 2015 Summary This paper proposes an improved transient negative-sequence calculation formula for a large-capacity nuclear power generator system under unbalanced network conditions. Because of the disadvantages of traditional transient negative-sequence ratings, I2*2 t is concluded to be inadequate for rating the generator imbalance capability.
Bao-jun Ge +4 more
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MMC-SST input-level control strategy considering power quality optimization
电力工程技术, 2022 The surge of negative sequence component of current affects the waveform quality of grid side current and endangers the normal operation of the system when the three-phase voltage of solid state transformer (SST) in the distribution network is unbalanced
ZHAO Wei +3 more
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