Results 71 to 80 of about 263,888 (208)

High performance magnetic field sensor based on Superconducting Quantum Interference Filters

open access: yes, 2004
We have developed an absolute magnetic field sensor using Superconducting Quantum Interference Filter (SQIF) made of high-T_c grain boundary Josephson junctions.
Caputo, P.   +6 more
core   +1 more source

Design of a new type of integrated test bench for mine-used high-voltage protector

open access: yesGong-kuang zidonghua, 2016
A new type of integrated test bench for mine-used high-voltage protector was designed. The overall structure and design schemes of software and hardware of the test bench were introduced.
HUANG Hesong   +3 more
doaj   +1 more source

Power control strategies during voltage sags according to Spanish grid code [PDF]

open access: yes, 2018
In order to connect any power converters into the grid there are some grid requirements to insure the safe operation of the grid. So, the control of the converters especially during abnormal condition e.g. during voltage sags is
Bakkar, Mostafa   +4 more
core   +1 more source

Circulating Current Suppression and Midpoint Potential Balance of Flexible DC T-Type Three-Level Bidirectional Converter for Urban Rail Transit [PDF]

open access: yesDianli jianshe
[Objective] A bidirectional converter integrates traction, feedback, and reactive power compensation and is the primary choice for upgrading the main equipment of an urban rail DC traction power supply system.
LIU Jianhua, LI Dongdong, LI Hao
doaj   +1 more source

Influence of magnetic saturation effects on the fault detection of induction motors

open access: yesArchives of Electrical Engineering, 2014
In this paper, the influence of impact damage to the induction motors on the zero-sequence voltage and its spectrum is presented. The signals detecting the damages result from a detailed analysis of the formula describing this voltage component which is ...
Drozdowski Piotr, Duda Arkadiusz
doaj   +1 more source

Symmetric Components for Transient Regime Application in MV Systems

open access: yes, 2007
International audienceIn order to apply advantageously the symmetrical components theory to SLG fault transients in distribution systems we take profit of similitude of transient components in faulty phase current and in zero sequence current on faulty ...
Huang, Wan-Ying, Kaczmarek, Robert
core   +2 more sources

PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags [PDF]

open access: yes, 2018
This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
Camacho Santiago, Antonio   +4 more
core   +2 more sources

Design of Selective Leakage Protection Circuit Based on Method of Amplitude Discrimination and Phase Discriminatio

open access: yesGong-kuang zidonghua, 2010
The paper proposed a design scheme of selective leakage protection circuit based on method of amplitude discrimination and phase discrimination for electrical control equipments of fully mechanized devices of coal mine underground.The selective leakage ...
FAN Yi-long~, LI Hang~, YOU Guo-dong~
doaj  

Discussion of Auxiliary Power Source Open-Phase Protection in Nuclear Power Plant

open access: yes南方能源建设
[Objective] The auxiliary power source in nuclear power plant operates at no-load normally, the protection cannot alarm when it occurs single phase open, but this open-phase condition will threaten the nuclear safety seriously, it should assemble special
Shunhua WU   +7 more
doaj   +1 more source

Research on single-phase grounding fault protection on the AC side of VSC-HVDC systems considering third harmonic modulation

open access: yesZhejiang dianli
To achieve simple and reliable single-phase grounding fault protection on the AC side of VSC-HVDC systems, this paper focuses on systems where the neutral point of the converter valve's AC side is impedance-grounded.
XU Xinsen   +4 more
doaj   +1 more source

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