Results 281 to 290 of about 566,628 (336)

Applicability of Calculation Methods for Single-phase Short Circuit Currents in Grid with Voltage up to 1 kV

2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), 2020
The values of single-phase short-circuit currents are calculated at the designing of power supply systems for selecting the parameters of fusible inserts and settings of circuit breakers. Active resistance of the arc exerts a significant effect on the single-phase short circuit current in the distribution network, especially if the short circuit occurs
German Lipinskiy, Marina Rashevskaya, Sergey Tsyruk   +2 more
openaire   +3 more sources

Short-Circuit Fault Diagnosis Based on Rough Sets Theory for a Single-Phase Inverter

IEEE Transactions on Power Electronics, 2019
The short-circuit (SC) fault diagnosis in inverters is an important procedure for the continuity of the performance and the extension of its useful life. The methods of diagnosis of SC failures produce good results, however, they present unfavorable aspects: they detect only one of the faults of SC, that is to say, the hard switch fault (HSF) or the ...
Andre Barros de Mello Oliveira, Robson Luiz Moreno, Enio Roberto Ribeiro   +2 more
openaire   +3 more sources

Research on Short-Circuit Force of Transformer Winding with Single-Phase Short-Circuit and Three-Phase Short-Circuit

2021 11th International Conference on Power and Energy Systems (ICPES), 2021
When the transformer short-circuit occurs, the short-circuit current value in the winding wire can reach more than ten to dozens of times of the rated value.
Xiaoxiao Luo, Qianbo Xiao, Qian Wang, Wenyan Gan, Baojia Deng, Zhiping Sheng   +5 more
openaire   +2 more sources

Analysis and Suppression of Vibration in Modular Fault-Tolerant PMSM Under Single-Phase Short-Circuit Faults

2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019
This paper investigates the effects of single-phase short-circuit faults (SCF) on the electromagnetic (EM) force and vibration compared with the normal condition of the motor. Firstly, this paper introduces the structure of the modular motor. Secondly, optimize the modular motor structure to suppress the short-circuit current and ensure that the motor ...
Shibo Li, Zaixin Song, Lei Chen, Yue Tang, Guangxian Han, Feng Chai   +5 more
openaire   +3 more sources

Research on short circuit operation mechanism and current limiting strategy of single phase inverter

2018 IEEE Applied Power Electronics Conference and Exposition (APEC), 2018
The output side of inverter short circuit to ground is an inevitable and severe work condition. In this paper, the operation mechanism of short circuit running is analyzed in detail. The inductor current waveform is analyzed quantitatively under the traditional double loop control.
Li Shixian, Zirui Fu, Wuji Meng, Fanghua Zhang, Chunjuan Zhang   +4 more
openaire   +3 more sources

Impedance-Based Algorithm for the Discrimination between Inrush and Short-Circuit Currents in Single-Phase Transformers

Electric Power Components and Systems, 2003
This paper presents an impedance-based technique for the discrimination between inrush current and short-circuit current in single-phase transformers. The method is based on the simulation of the behavior of the impedance relay. A Hilbert transform is adapted for the numerical calculation of the impedance at the input terminals of the transformer ...
Mohammed Abo-Zahhad, Kamel Al-Tallaq
openaire   +3 more sources

Delayed Current Zero Crossing Characteristics for Circuit Breaker Interrupting Short-Circuit Current Following Permanent Single-phase Ground Fault on Short 1000kV AC Lines

2019 IEEE Asia Power and Energy Engineering Conference (APEEC), 2019
For double or multiple circuits of 1000kV lines on the same tower, where a permanent single-phase ground fault occurs on one circuit, delayed current zero crossing may take place during single-phase reclosing of circuit breaker. This may overburden and even damage the breaker.
Zha Zhipeng, Wan Lei, Ying Lou, Zhenqiang Li   +3 more
openaire   +3 more sources

Single-Phase Short-Circuit Fault Tolerant Control for Five-Phase Permanent Magnet Machines With Copper Loss Reduction

IEEE transactions on industrial electronics (1982. Print), 2023
Five-phase machines represent a widely adopted choice for fault-tolerant applications due to their extra degrees of freedom. This article deals with the single-phase short-circuit fault tolerant control using original transformation matrix for five-phase
H. Wang, Chunyang Gu, Shuo Wang, Weiduo Zhao, Shun Bai, G. Buticchi, C. Gerada, He Zhang   +7 more
semanticscholar   +1 more source

Rotor Loss and Thermal Analysis of Synchronous Condenser Under Single-Phase Short-Circuit Fault in the Transmission Line

IEEE transactions on energy conversion, 2022
A synchronous condenser (SC) can provide the reactive power for the Ultra High Voltage Direct Current (UHVDC) converter station to keep voltage stability and prevent commutation failure.
Guorui Xu, Zhenzhen Wang, Jingdi Zhou, Zhiqiang Li, Y. Zhan, Haisen Zhao, Weili Li   +6 more
semanticscholar   +1 more source

Remedy Strategy for Five-Phase FTPMMs Under Single-Phase Short-Circuit Fault by Injecting Harmonic Currents From Third Space

IEEE transactions on power electronics, 2022
This article proposes a new fault-tolerant control for five-phase fault-tolerant permanent-magnet motors under single-phase short-circuit fault. In the proposed method, the effect on torque performance caused by a short-circuit fault is attributed into ...
Qian Chen, Licheng Gu, Jiabin Wang, Wenxiang Zhao, Guohai Liu   +4 more
semanticscholar   +1 more source