Results 41 to 50 of about 13,958 (154)

Comparative analysis of the characteristics of outlet short circuit and winding insulation fault of distribution transformer and its preventive measures

High Voltage
Outlet short circuit on the low‐voltage (LV) side and winding inter‐turn short circuit faults are hazardous to transformer operation. To investigate the formation mechanism of winding insulation faults of distribution transformer, ANSYS Maxwell was used ...
Richang Xian, Yuyao Hu, Bingqian Zhang, Qingyu Rong, Rujie Zhao, Wei Wang, Yang Guo, Yunhao Li   +7 more
doaj   +1 more source

Influence of the Load on the Impulse Frequency Response Approach Based Diagnosis of Transformer’s Inter-Turn Short-Circuit

IEEE Access, 2020
Frequency Response Analysis (FRA) is an Off-line condition monitoring technique for the transformers and is successful, in diagnosing mechanical faults and inter-turn short-circuits.
Natarajan Shanmugam, Balasubramanian Madanmohan, Rajesh Rajamani   +2 more
doaj   +1 more source

The Detection of an Inter-Turn Short-Circuit Fault in a Brushless Permanent Magnet Motor with Different Winding Configurations

Energies
This article is about the detection of a partial inter-turn short-circuit fault in a brushless motor with permanent magnets (BLPMM). The detection of a single inter-turn short circuit is a difficult issue.
Mariusz Korkosz, Jan Prokop, Karol Ryłło   +2 more
doaj   +1 more source

Study on electromagnetic force characteristics and vibration noise of shell-type transformers under different inter-turn short circuits [PDF]

AIP Advances
Shell transformers are widely used in power systems and new energy fields owing to their compact structure and high short-circuit resistance. An inter-turn short circuit is a typical fault in operation and can easily cause electromagnetic force ...
Duanjiao Li, Wenxing Sun, Pengjie Liang, Yuhui Chen, Dezhi Chen, Xianghui Chang, Dingpo Shen   +6 more
doaj   +1 more source

Stator Inter-Turn Short-Circuits Fault Diagnostics in Three-Phase Line-Start Permanent Magnet Synchronous Motors Fed by Unbalanced Voltages

Machines, 2023
This paper addresses the diagnostics of stator faults in three-phase line-start permanent magnet synchronous motors. More traditional fault diagnostic methodologies are unable to properly diagnose stator inter-turn short-circuit faults in three-phase ...
D. S. B. Fonseca, Hugo R. P. Antunes, Antonio J. Marques Cardoso   +2 more
doaj   +1 more source

An early fault diagnosis method for inter-turn short circuits in dry-type air-core reactors considering harmonic voltages

Zhejiang dianli
In response to challenges such as the subtle early fault indications and the fluctuating harmonic content in power systems affecting diagnostic accuracy， this paper presents a novel method for analyzing and diagnosing inter-turn short circuit faults in ...
ZHAO Qicheng, MA Wenhao, HAN Guowen, HAN Wenfang, CHEN Jinpeng, CHEN Feng, ZHANG Bo   +6 more
doaj   +1 more source

Fault Diagnostic of Doubly-Fed Induction Generator in Stator Inter-Turn Short Circuit Based Wind Turbine

Algerian Journal of Signals and Systems, 2017
This paper describes a Fault Tolerant Control (FTC) of a doubly-fed induction generator (DFIG) based wind turbine model suitable for the simulation of this generator in the mode faulty mode.
N. Boumalha, R. Hachelef, D. Kouchih, M. Tadjine, M.S. Boucherit   +4 more
doaj   +1 more source

Research on electromagnetic vibration and noise of transformer under short circuit conditions

AIP Advances
For an open-type 50 kV A three-dimensional laminated core transformer, this paper establishes a research framework for inter-turn short-circuit faults from the perspective of the power system.
Zhongxiang Li, Wenxing Sun, Duanjiao Li, Dezhi Chen, Linglong Cai, Xian Yang, Shuo Jiang, Ziyuan Xin, Xianghui Chang, Sunjing Gong   +9 more
doaj   +1 more source

Digital-Twin-Driven PMSM Inter-Turn Short-Circuit Fault Diagnosis Method

Energies
Under practical operating conditions, intelligent fault diagnosis of permanent magnet synchronous motors (PMSMs) is often hindered by the shortage of effective fault samples. To address this issue, this paper proposes a twin-data-driven transfer learning-
Renxiang Chen, Shaojun Lin
doaj   +1 more source

Research and Application of Generator Protection Based on Fiber Optical Current Transformer

IEEE Access, 2020
This paper introduces the basic principle of fibre optical current transformer (FOCT), and explains the advantages of FOCT compared with electromagnetic current transformer (CT).
Jun Chen, Qingshan Xu, Kai Wang
doaj   +1 more source