Results 21 to 30 of about 4,324,670 (291)

Efficient Fault Detection of Rotor Minor Inter-Turn Short Circuit in Induction Machines Using Wavelet Transform and Empirical Mode Decomposition

, 2023
This paper introduces a novel approach for detecting inter-turn short-circuit faults in rotor windings using wavelet transformation and empirical mode decomposition.
Jianfeng Sun, Weidong Jiao, Muhammad Ijaz Khan, Attiq Ur Rehman, Yonghua Jiang, Mahnoor Shahzadi, Muhammad Sohaib   +6 more
core   +1 more source

Short circuit fault identification and diagnosis analysis of rotor winding for variable speed pumped storage unit

Energy Reports, 2022
Rotor winding short circuit is a frequent fault type of generator unit. Compared with the traditional fixed-speed unit using DC excitation, the three-phase AC excitation structure of the variable speed pumped storage unit is more complicated, and the ...
Qinghui Lu, Xianggen Yin, Jian Qiao, Yikai Wang, Liming Tan, Lingjin Zhu   +5 more
doaj   +1 more source

Symmetrical Loss of Excitation Fault Diagnosis in an Asynchronized High-Voltage Generator

Energies, 2018
As a new type of generator, an asynchronized high-voltage generator has the characteristics of an asynchronous generator and high voltage generator. The effect of the loss of an excitation fault for an asynchronized high-voltage generator and its fault ...
Yanling Lv, Yuting Gao, Jian Zhang, Chenmin Deng, Shiqiang Hou   +4 more
doaj   +1 more source

Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation [PDF]

, 2014
An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions.
NGUYEN, Ngac Ky, KESTELYN, Xavier, FLIELLER, Damien, SEMAIL, Eric, Eric Semail, Ngac Ky Nguyen, Damien Flieller, Tiago Jose dos Santos Moraes, Xavier Kestelyn   +8 more
core   +1 more source

Early slight inter-turn short circuit fault diagnosis of axial flux stator coreless permanent magnet motor based on phase difference [PDF]

Journal of Hebei University of Science and Technology
Aiming at the problem of early inter-turn short circuit fault of axial flux stator coreless motor, a method for early inter-turn short circuit fault diagnosis and positioning of axial flux stator coreless motor based on the phase difference of zero ...
Xiaoguang WANG, Mengkai CHEN, Yifan ZHOU, Mingqiang YUE, Yahong CHEN   +4 more
doaj   +1 more source

A New Short-Circuit Current Calculation and Fault Analysis Method Suitable for Doubly Fed Wind Farm Groups

, 2023
The transient characteristics of wind farms in groups are quite different; in addition, there is a strong coupling between the wind farms and the grid, and these factors make the fault analysis of the grid with wind farm groups complicated.
Weichen Qian, Jun Yin, Xiaobo Huang
core   +1 more source

Fault Characteristic Analysis and a Novel Pilot Protection Scheme for Pole-to-Ground Fault in Flexible DC Distribution Network

IEEE Access, 2023
Due to the pseudo-bipolar structure of the flexible DC distribution network, the short-circuit current caused by a pole-to-ground fault is weak. The fault characteristics, particularly the steady-state fault characteristics, are not prominent. Therefore,
Hao Qi, Wei Chen, Zhenlan Dou, Jiexiang Han, Pei Sun, Zhe Zhang, Xianggen Yin   +6 more
doaj   +1 more source

A Review of Short-Circuit Fault Analysis and Novel Fault Detection Methods

, 2021
This paper proposes a comprehensive review of short circuit fault analysis. It presents the different definitions and classifications of faults. It then discusses both symmetrical and unsymmetrical faults in detail and provides the equations used to solve for the fault current during each of these faults.
Moayad Osman, Ibrahim O. Habiballah
openaire   +2 more sources

The Cable Fault Diagnosis for XLPE Cable Based on 1DCNNs-BiLSTM Network

Journal of Control Science and Engineering, 2023
Diagnosing the fault type accurately from a variety of faults is very essential to ensure a stable electricity supply when a short-circuit fault occurs.
Qianyu Wang, Dong Cao, Shuyuan Zhang, Yuzan Zhou, Lina Yao   +4 more
doaj   +1 more source

Characteristics of Short-Circuit Current in Distribution Network with Doubly-Fed Wind Power System

Shanghai Jiaotong Daxue xuebao, 2023
The doubly-fed induction generator (DFIG) is connected to the distribution network as a distributed power source, which turns a radial single power supply system into a dual power supply system and changes the topology of the distribution network. When a
XI Xinze, XING Chao, QIN Risheng, HE Tingyi, HE Peng, MENG Xian, CHENG Chunhui
doaj   +1 more source