Results 41 to 50 of about 6,164 (167)

Calculation method of short-circuit fault current in flexible DC grid

Energy Reports, 2022
The flexible DC grid has the capability to transport and distribute electric energy in multiterminal power system, and avoid the adverse impact on AC power grid in reactive power consumption and current harmonic.
Shuai Yuan, Jun Yan, Yongjie Yu, Chengyong Zhao, Guoyun Su, Xuan Li   +5 more
doaj   +1 more source

Investigation on Stator Winding Inter-turns Short Circuit Fault Diagnosis

Journal of Harbin University of Science and Technology, 2018
On the basis of negative sequence current generation mechanism analysis of synchronous generator stator winding inter-turns short circuit，the method of detecting and diagnosing synchronous generator stator winding inter-turns short circuit is proposed ...
ZHAO Hong-sen, GE Bao-jun, TAO Da-jun, YANG Kun, XING Guang   +4 more
doaj   +1 more source

Relaxed Fault Conditions for Stator Short-Circuit Fault Isolation in Induction Motors

IFAC Proceedings Volumes, 2012
Abstract In this paper, a geometric analysis has been carried out for stator fault isolation in three-phase induction motors (IM). Specifically, stator short-circuit faults in IM are considered in this study. For the geometric analysis, the study departs from the IM model in the stator reference frame ( dq -frame). Nonetheless, a single fault in the
D.R. Espinoza-Trejo, Cristian H. De Angelo, Guillermo R. Bossio, D.U. Campos-Delgado, I. Compeán-Martínez   +4 more
openaire   +1 more source

A Study of Symmetrical and Unsymmetrical Short Circuit Fault Analyses in Power Systems

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
In this study, thecommon symmetrical and unsymmetrical short circuit faults in power systems areanalyzed detailed. Unlike the similar studies in the literature, metallic faultconditions for unsymmetrical faults are also given in the paper additionally ...
Yılmaz Yıldırım, Faruk Yalçın
doaj   +1 more source

Analysis of interturn short circuit in regulating winding of power transformer based on field-circuit coupling

Frontiers in Energy Research
The interturn short circuit fault is one of the common faults in power transformers. At present, research on interturn short circuit faults focuses on high, medium, and low voltage windings, while there is relatively little research on interturn short ...
Liangchang Fei, Zhiqin Ma, Linglong Cai, Dan Zhou, Xiang Shu, Zihao Liao, Chunyao Lin, Xianqiang Li   +7 more
doaj   +1 more source

Incipient short-circuit fault diagnosis of lithium-ion batteries

Journal of Energy Storage, 2020
Abstract Diagnosing incipient short circuit (SC) of on-board lithium-ion cells is of great importance for safety operation, because it can prevent further deterioration such as spontaneous thermal runaway. Considering equivalent circuit models (ECMs) are currently the most used models for executing on-line battery state and parameter estimation ...
Meng, Jianwen, Boukhnifer, Moussa, Delpha, Claude, Diallo, Demba   +3 more
openaire   +2 more sources

An Improved Fault-Tolerant Control Strategy for High-Power ANPC Three-Level Inverter Under Short-Circuit Fault of Power Devices

IEEE Access, 2019
The high-power active neutral-point clamped (ANPC) three-level inverter has high-reliability requirements for the system operation, and short-circuit fault, very common, and serious problem in the operation will affect the operation stability.
Shi-Zhou Xu, Chun-Jie Wang, Yu Wang
doaj   +1 more source

Performance assessment of triple redundant nine-phase delta- and wye-connected permanent magnet-assisted synchronous reluctance motor under healthy and fault conditions

The Journal of Engineering, 2019
In this study, the performance of a triple redundant nine-phase permanent magnet-assisted synchronous reluctance motor with delta-connected windings is comprehensively assessed and compared with that of wye-connected winding under healthy and fault ...
Yanwen Shi, Jiabin Wang, Bo Wang
doaj   +1 more source

An Asymmetric Short-Circuit Fault Ride-Through Strategy Providing Current Limiting and Continuous Voltage Supply for Three-Phase Three-Wire Stand-Alone Inverters

IEEE Access, 2020
The three-phase three-wire stand-alone inverter is required to have short-circuit fault ridethrough ability to achieve continuity of power supply. Generally the inverter works in current-controlled mode in symmetric short-circuit conditions, but voltage ...
Jian He, Peng Liu, Bangyin Liu, Shanxu Duan   +3 more
doaj   +1 more source

Calculation and Analysis of the Strands Short-Circuit in Stator Transposition Bar for Large Generators

IEEE Access, 2019
The transposition of the stator bar is an important technique in the large generator design. Under the excitation of vibration and thermal effect, the insulation of strand is easily damaged, which leads to short-circuiting fault, and adversely impacts ...
Chenguang Wang, Yanping Liang, Lei Ni, Dongmei Wang, Xu Bian   +4 more
doaj   +1 more source