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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

Underground power supply system grounding fault section positioning method based on wide-area current transient component

Gong-kuang zidonghua, 2022
At present, most of the research on underground power supply system grounding fault positioning in coal mine adopts the transient method, which needs to collect zero sequence voltage and zero sequence current of the line at the same time.
OUYANG Min, DU San'en, LI Wenjun, HOU Gang, XUE Zhongxin, YANG Feiwen, GAO Bin, FAN Shengjun, WANG Feng, MAO Hao, HAN Peiqiang   +10 more
doaj   +1 more source

Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks

Energies, 2020
In this paper, two new methods for locating single-phase to ground faults in isolated neutral distribution networks are proposed. The methods are based on the analysis of symmetrical sequence currents.
Amir Farughian, Lauri Kumpulainen, Kimmo Kauhaniemi   +2 more
doaj   +1 more source

Analysis of unbalanced clustered voltage and control strategy of clustered voltage balancing for cascaded H-bridge STATCOM

Journal of Modern Power Systems and Clean Energy, 2019
To explore the clustered voltage balancing mechanism of the cascaded H-bridge static synchronous compensator (STATCOM), this paper analyzes the causes of unbalanced clustered voltage. The negative-sequence current caused by the compensation of unbalanced
Yu Jin, Jianze Wang, Yiqi Liu, Xinagyu Sai, Yanchao Ji   +4 more
doaj   +1 more source

A line selection method of mine leakage protectio

Gong-kuang zidonghua, 2020
Aiming at problem of low accuracy of line selection when single-phase grounding fault occurs in mine power supply system at present, according to characteristics of obvious difference of zero-sequence current waveform between fault line and non-fault ...
YU Qun, SHANG Xueli
doaj   +1 more source

Reliability Improvement Strategy for Transformer Zero-Sequence Differential Protection Based on Zero-Sequence Current Amplitude Difference Characteristics

Zhongguo dianli
The zero-sequence differential protection of transformer may cause the reliability to decrease or even malfunction due to the fault of current transformer (CT) when dealing with complex inrush current and fault.
Junchao ZHENG, Yaming GE, Xiangping KONG, Xuchao REN, Shi CHEN, Chenqing WANG   +5 more
doaj   +1 more source

Research on dead-time compensation of common DC bus OW-PMSM based on 120°decoupling modulation

Energy Reports, 2022
To suppress the switching dead-band in the Open-End Winding Permanent Magnet Synchronous Machine with Common DC bus (OW-PMSM-CDCB) drive system, the dual-inverter switch dead-band generates zero-sequence voltage and current during 120°decoupling ...
Shirui Xie, Yinhang Ning, Zhaoyuan Zhang, Haihong Qin, Xinpeng Feng, Chaohui Zhao   +5 more
doaj   +1 more source

Research on Circulating Current Suppression Control of Parallel Inverters

Energies
Circulating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study.
Yibiao Fan, Lixia Tong, Xiaoping Wang, Xiaowei Cai, Zhihe Fu, Junhui Zhou, Shuangmao Huang, Xingkui Mao   +7 more
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Characteristic Quantity Analysis of Single-Phase Contact Tree Ground Fault of Distribution Network Overhead Lines

Energies, 2023
When the overhead line passes through the forest area, the conductor may contact the line to induce the tree-contact single-phase-to-ground fault (TSF), and the persistence of TSF may induce wildfires, bringing serious consequences.
Jianbo He, Yao Zhou, Yilin Li, Guangqing Zhang, Jiayu Liang, Hao Shang, Wenjun Ning   +6 more
doaj   +1 more source

Deadbeat Predictive Current Control for Series-Winding PMSM Drive with Half-Bridge Power Module-Based Inverter

Energies, 2021
Series-winding topology (SWT) could improve the DC-link voltage utilization, as open-winding topology does. Meanwhile, it can greatly reduce the number of power devices. Firstly, for the half-bridge power modules (HBPMs)-based inverter, an N-phase series-
Zhiping Dong, Chunhua Liu, Senyi Liu, Zaixin Song   +3 more
doaj   +1 more source