Results 101 to 110 of about 642,858 (215)

International White Book on DER Protection : Review and Testing Procedures [PDF]

, 2011
This white book provides an insight into the issues surrounding the impact of increasing levels of DER on the generator and network protection and the resulting necessary improvements in protection testing practices.
Abdulhadi, Ibrahim Faiek, Booth, Campbell, Burt, Graeme, Coffele, Federico, Crolla, Paul, Dysko, Adam, Li, Xinyao, Schafer, Nils   +7 more
core  

Fundamental Modeling of the Switching Transition in High-Speed Power Electronics

IEEE Access
Recent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
doaj   +1 more source

Program latihan industri di Kolej Universiti Teknologi Tun Hussein Onn : kajian terhadap perlaksanaan sistem penilaian [PDF]

, 2004
Kajian yang dijalankan adalah bertajuk "Program Lalilian lndustri Di Kolej Universiti Teknologi Tun Hussein Onn : Kajian Terhadap Perlaksanaan Sistem Penilaian".
Mukhtar, Affidah Mardziah
core  

Mechanism Analysis and Simulation Study of Closing Overvoltage Fault in EMU Circuit Breaker

Chengshi guidao jiaotong yanjiu
Objective The overvoltage caused by circuit breaker closing will aggravate the insulation aging of high voltage equipment when EMU (electric multiple units)passes neutral section.
ZHANG Mingrui, ZHANG Ningchuan, LIU Zhengwei   +2 more
doaj   +1 more source

Test of SensL SiPM coated with NOL-1 wavelength shifter in liquid xenon

, 2017
A SensL MicroFC-SMT-60035 6x6 mm$^2$ silicon photo-multiplier coated with a NOL-1 wavelength shifter have been tested in the liquid xenon to detect the 175-nm scintillation light. For comparison, a Hamamatsu vacuum ultraviolet sensitive MPPC VUV3 3x3 mm$^
Akimov, D. Yu., Belov, V. A., Borshchev, O. V., Burenkov, A. A., Grishkin, Yu. L., Karelin, A. K., Kuchenkov, A. V., Martemiyanov, A. N., Ponomarenko, S. A., Simakov, G. E., Stekhanov, V. N., Surin, N. M., Timoshin, V. S., Zeldovich, O. Ya.   +13 more
core   +1 more source

Resolving Sub-Cycle Overvoltage Issue in Solar and Type-4 Wind Farms Employing Low Voltage Ride Through

IEEE Access
Over the past few years, transmission grid in the USA has seen numerous unintentional tripping events of large-scale inverter based resources (IBRs). These trippings were primarily caused by non-standard settings and certain fault ride through controls ...
Shah Mohazzem Hossain, Trupal Patel, Sukumar Brahma   +2 more
doaj   +1 more source

MULTIVULATED FREQUENCY-REGULATED ELECTRIC DRIVE OF CORD WRAPPING LINE

Известия высших учебных заведений: Проблемы энергетики, 2018
The urgency of the work is due to the need to develop a multi-motor frequency-controlled electric drive for cord clipping lines. The study of the construction of energy-efficient multi-motor drives, with the help of reversible frequency converters, which
S. N. Sidorov, N. I. Gorbachevsky, E. N. Gavrilov   +2 more
doaj   +1 more source

Inverter-converter automatic paralleling and protection [PDF]

Electric control and protection circuits for parallel operation of inverter ...
Doughman, C. L., Lenhart, N. D., Marino, B. A.   +2 more
core   +1 more source

Study of Power Frequency Overvoltage Suppression on UHV Transmission Line

Kongzhi Yu Xinxi Jishu, 2014
It mainly studied the improvement measures of overvoltage level for UHV transmission line from Jindongnan to Jingmen. It analyzed single-phase grounding load shedding overvoltage and fault-free load shedding overvoltage in the case of the single ...
HAN Mengmeng, WU Wenhui, HUANG Kan, WAN Liqin   +3 more
doaj  

Research on the Influence of Power Grid on the Operation of Voltage Source Inverter

Kongzhi Yu Xinxi Jishu, 2017
Three-phase input current unbalance is often happened in inverters, which causes devices damaged by overvoltage or over-current. Influences of grid unbalance, line impedance and multi-load on voltage source inverter and their mechanisms were analyzed ...
WANG Lucheng, HE Donglin, ZHANG Fengjiang   +2 more
doaj