Results 1 to 10 of about 1,345,542 (178)

Induction Motor Fault Diagnosis Based on Zero-Sequence Current Analysis [PDF]

Energies, 2020
This paper presents some considerations regarding the application of the stator zero-sequence current component (ZSC) in the fault detection of cage induction machines, including the effects of magnetic core saturation.
Arkadiusz Duda, Piotr Drozdowski
doaj   +2 more sources

Research of Zero Sequence Current of Parallel System of PWM Rectifier

Gong-kuang zidonghua, 2012
Taking two-level parallel system of PWM rectifier as example, the paper analyzed cause of zero sequence circulation in parallel module: the circulation is generated by difference of duty cycle of zero sequence current of two modules; generation of the ...
NI Shuai, TANG Li-na, LIU Jie, NI Shi-jiang   +3 more
doaj   +1 more source

Restraint Scheme of Transformer Zero Sequence Differential Protection Based on Tanimoto Similarity

Zhongguo dianli, 2023
As one of the important transformer protections, zero sequence differential protection has the advantages of high sensitivity and strong anti-interference ability.
Jia ZHU, Feng WANG, Yiquan LI, Shaolin JIAO, Xiaochun XU, Qingchun ZHAO   +5 more
doaj   +1 more source

Research on Fault-Tolerant Operation Strategy of Permanent Magnet Synchronous Motor with Common DC Bus Open Winding Phase-Breaking Fault

Energies, 2022
In some key areas, fault-tolerant control is usually needed in order to enable the motor to operate continuously in fault mode. Given that it is difficult to detect the zero-sequence current of the open winding permanent magnet synchronous motor after ...
Kangfei Lv, Xinwei Dong, Cong Zhu
doaj   +1 more source

Unbalanced and Reactive Currents Compensation in Three-Phase Four-Wire Sinusoidal Power Systems

Applied Sciences, 2020
In an unbalanced linear three-phase electrical system, there are inefficient powers that increase the apparent power supplied by the network, line losses, machine malfunctions, etc.
Rafael Montoya-Mira, Pedro A. Blasco, José M. Diez, Rafael Montoya, Miguel J. Reig   +4 more
doaj   +1 more source

An Improved Modulation Method for Parallel Three-Level Rectifiers With Circulating Current Mitigation

IEEE Access, 2023
An improved modulation method is proposed for two parallel three-level interleaved rectifiers to reduce current harmonics and high-frequency zero-sequence circulating current, which uses sinusoidal pulse width modulation.
Yanfeng Li, Hongliang Zhang, Xiao Jing, Aiguang Zhao   +3 more
doaj   +1 more source

Zero-Sequence Differential Current Protection Scheme for Converter Transformer Based on Waveform Correlation Analysis

Energies, 2020
Through the analysis of the recovery inrush current generated by the external fault removal of the converter transformer, it is pointed out that the zero-sequence current caused by the recovery inrush may result in the saturation of the neutral current ...
Tao Zheng, Xinhui Yang, Xingchao Guo, Xingguo Wang, Chengqi Zhang   +4 more
doaj   +1 more source

Three‐phase isolated power transformer based novel structure for power distribution system and new theoretical/practical judgement criteria in detecting high‐impedance earth faults

IET Renewable Power Generation, 2023
Single phase‐earth faults are the most frequent faults likely to occur but hard to identify in distribution system, especially in a neutral un‐effectively grounded system.
Hua Zhang, Xueneng Su, Longjiang Li, Xin Ning, Rui Zhang, Cheng Long, Shilong Li, Yiwen Gao   +7 more
doaj   +1 more source

Network-centric technologies for control of three-phase network operation modes [PDF]

, 2017
Purpose. The development of the control system for three-phase network is based on intelligent technologies of network-centric control of heterogeneous objects.
Gapon, D. A., Gryb, O. G., Iierusalimova, T. S., Shvets, S. V., Sirotin, Yu. A., Sokol, Y. I.   +5 more
core   +7 more sources

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.
FLIELLER, Damien, KESTELYN, Xavier, NGUYEN, Ngac Ky, SEMAIL, Eric   +3 more
core   +5 more sources