Results 31 to 40 of about 868,690 (284)
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
doaj +1 more source
Applied Sciences, 2023 With the increased grid-connected capacity of a single-phase distributed power supply, three-phase power unbalance is more likely to occur in a power grid.
Zhenao Sun, Dazhong Ma, Qiuye Sun
doaj +1 more source
Zhongguo dianliIn order to solve the problem that the fault current can not correctly indicate the fault section due to the connection of photovoltaic power to the distribution network, the three-sequence component of the faulty distribution network with photovoltaic ...
Manlin HU +5 more
doaj +2 more sources
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
doaj +1 more source
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
doaj +1 more source
Research on Life Loss of Generator Retainer Caused by Negative Sequence Current [PDF]
Journal of Physics: Conference Series, 2021 Abstract With a large number of wind and solar power sources connected to the power grid, higher requirements are put forward for the power generation equipment to respond to the power grid imbalance. The safety research of generator rotor retaining ring under the impact of negative sequence current is of great significance.
Yong Wang +3 more
openaire +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +1 more source
Control scheme for negative-sequence voltage compensation and current sharing in inverter-based grid-connected microgrids [PDF]
, 2022 © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Borrell Sanz, Angel +4 more
core +1 more source