Results 31 to 40 of about 375,639 (295)

Zero-Sequence Current Reduction Technique for Electrical Machine Emulators With DC Coupling by Regulating the SVM Zero States

, 2022
In this article, a new zero-sequence current suppression technique for electrical machine emulators with reduced component count is proposed. The proposed control scheme is implemented by properly regulating the zero states in space vector modulation ...
Liu, Yujing,, Tang, Junfei,, Mademlis, Georgios, Liu, Yujing, Sharma, Nimananda, Sharma, Nimananda,, Tang, Junfei, Mademlis, Georgios,   +7 more
core   +1 more source

Model predictive control of smart greenhouses as the path towards near zero energy consumption

, 2020
Modern agriculture represents an economic sector that can mainly benefit from technology innovation according to the principles suggested by Industry 4.0 for smart farming systems. Greenhouse industry is significantly becoming more and more technological
Zero E., Bersani C., Sacile R., Ouammi A.   +3 more
core   +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

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

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

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

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

Hybrid Reluctance Machine with Skewed Permanent Magnets and Zero-Sequence Current Excitation [PDF]

, 2022
The reluctance machine is a potential candidate for electrical vehicle propulsion because of its reliable structure, low cost, flexible flux regulation ability, and wide speed range.
Wang, Weiyu, Weiyu Wang, Ziqi Huang, Zhao, Xing, Xing Zhao, Huang, Ziqi, Niu, Shuangxia, Shuangxia Niu   +7 more
core   +1 more source

Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link [PDF]

, 2021
This thesis describes the research based on a particular type of the motor drives called an open-end winding permanent magnet synchronous motor drive with common DC link.
Hunter, Nick
core   +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
doaj   +1 more source