Results 51 to 60 of about 488,244 (193)

LIMITATION ОF FERRO-RESONANCE АND CUMULATIVE OVER-VOLTAGES BY WEAK NONLINEAR RESISTORS IN SWITCH GEAR WITH VOLTAGE TRANSFORMERS

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2005
Investigations results pertaining to ferro-resonance and cumulative over-voltages in switch gears by means of computer modeling are given in the paper. In order to solve the problem concerning limitation of ferro-resonance and cumulative over-voltages it
E. V. Dmitriev, A. M. Gashimov, I. R. Pivchik, S. I. Gasanova   +3 more
doaj  

A High-precision Current Sense Circuit with Trimming for DC-DC Converts

MATEC Web of Conferences, 2018
A high-precision current sense circuit with trimming is proposed to realize the over-current protection of the power management chip and improve its conversion efficiency.
Duan Ning, Liu Shulin, Zhu Xiangdong, Pei Jinjun, Zhu Haipeng   +4 more
doaj   +1 more source

Research of lightning protection gap of 35 kV power line of coal mine

Gong-kuang zidonghua, 2013
In order to test lightning protection effect of protection gap for 35 kV power line, the paper simulated lightning invasion in 35 kV transformer taking 35 kV overhead line of a mine as model by use of ATP-EMPT electromagnetic transient analysis software,
DENG Jie-wen, REN Wen-bin, LIU Yuan, ZHANG Dong, YI Xiao-fei, LIAO Zhi-hua   +5 more
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Study of Emergency Power Based on Solar Battery Charging

MATEC Web of Conferences, 2016
To study an emergency power based on solar battery charging. Based on the electric-generation principle of solar panel, solar energy is changed into electrical energy.
Wang Lei, Zhu Mengfu, Chen Ping, Deng Cheng, Liu Zhimeng, Wang Yanan   +5 more
doaj   +1 more source

Development of an internet of things-based monitoring system for small vertical axis wind turbine

Journal Geuthee of Engineering and Energy
Small-scale wind turbines often face challenges related to low energy conversion efficiency and the lack of adequate monitoring and automatic protection systems against fluctuating weather and load conditions.
Yuli Prasetyo, Budi Triyono, Budi Artono, Santi Triwijaya, Ainul Khakim, Ade Nofa Ramadhan   +5 more
doaj   +1 more source

Research on Electromagnetic Transient of EMUs Electronic Switch Passing Neutral Section

机车电传动, 2019
Electronic switch passing neutral section can eliminate the problem of train speed reduction in traditional way, and improve the train passing ability.
Lejia HAN, Shaobing YANG, Mingli WU
doaj  

Enhancing resilience of advanced power protection systems in smart grids against cyber–physical threats

IET Renewable Power Generation
Recently, smart grids introduce significant challenges to power system protection due to the high integration with distributed energy resources (DERs) and communication systems.
Feras Alasali, Ali M. Hayajneh, Salah Abu Ghalyon, Naser El‐Naily, Anas AlMajali, Awni Itradat, William Holderbaume, Eyad Zaroure   +7 more
doaj   +1 more source

Development of the Bidirectional Thyristor Assembly for High Voltage Soft Start Device

Kongzhi Yu Xinxi Jishu, 2016
Aiming at the working characteristics of high-voltage soft-start device such as high voltage, over-loading, intermission working and nature cooling, it developed a bidirectional thyristor assembly.
ZENG Wenbin, REN Yadong, ZHANG Wenhao, XIE Tengfei, SUN Wenwei   +4 more
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Research on the Techniques of High Power SiC-MOSFET Driver

机车电传动, 2018
In order to adapt to the characteristics of SiC-MOSFET, such as faster switching speed, lower loss but lower threshold voltage and weaker short-circuit capacity compared to Si-IGBT, the key techniques of SiC-MOSFET driver was analyzed, including drain ...
ZHOU Shuai, ZHANG Xiaoyong, RAO Peinan, ZHANG Qing, SHI Hongliang   +4 more
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