Results 31 to 40 of about 1,102 (185)

RESEARCH EMERGENCY TRANSIENTS IN POWER SYSTEMS 6 - 10 KV WITH THE THYRISTOR SWITCHES

Вестник Северо-Кавказского федерального университета, 2022
The conditions and the algorithms of thyristor switches to improve the reliability of power supply system 6 - 10 kV (SES) in emergency conditions: when power interruptions and short circuits (a short circuit).
Yuri Dyomin, Oleg Kirkorov
doaj  

Impedance Spectroscopy of Bifurcation Oscillations in S‐Type Self‐Oscillatory Devices

Advanced Physics Research, EarlyView.
Impedance spectroscopy (IS) reveals stability regimes and bifurcation dynamics in S‐type self‐oscillatory devices. By linking nonlinear control theory with frequency‐domain measurements, experimental signatures of oscillations, entrainment, and phase locking are directly identified.
Gonzalo Rivera‐Sierra, Roberto Fenollosa, Jenifer Rubio‐Magnieto, Nripan Mathews, Si En Ng, Juan Bisquert   +5 more
wiley   +1 more source

Preparation and Application of Novel Power Semiconductor Chips

Journal of Engineering
This study aims to improve the triggering current and dynamic characteristics of thyristor chips by designing new gate structures and multilayer semiconductor structures.
Zhiwei Yang, Asim Abas
doaj   +1 more source

A Novel Discrete Branch Bidirectional Solid-State Circuit Breaker Based on Mixture Device

CES Transactions on Electrical Machines and Systems
Solid state circuit breakers (SSCBs) based on full-controlled devices such as IGBT and based on half-controlled devices such as thyristor have their respective advantages.
Qingpeng Zeng, Jin Zhu, Songming He, Daoqi Wang, Tongzhen Wei   +4 more
doaj   +1 more source

Fault diagnosis technology of automatic voltage regulating transformer based on thyristor

Zhongguo Jianchuan Yanjiu, 2020
Objectives The voltage of marine electrical equipment often fluctuates, but the existing stabilization schemes have low reliability and high cost. As such, distribution equipment that can operate in harsh environments is required to stabilize the voltage.
FAN Lei, LI Weibo, XU Cong, LI Wei, LI Qi   +4 more
doaj   +1 more source

A Self-commutated HVDC Circuit Breaker Based on Forced Zero Crossing Technology

Zhongguo dianli, 2021
In order to improve the breaking capacity of Hybrid DC circuit breaker and reduce the harm of DC short circuit fault to the system, we proposed a self-commutated HVDC circuit breaker based on forced zero crossing technology.
Guoqing LI, Pengcheng WEI, Yutong LIU, Jing BIAN   +3 more
doaj   +1 more source

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

steel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source

Визначення температури напівпровідникової структури тиристора при циклічному навантаженні

Elektrotehnìka ta Elektroenergetika, 2012
Ця стаття присвячена методиці визначення максимального і мінімального значення температури напівпровідникової структури тиристорів випрямлячів, що працюють в режимі циклічно змінного навантаження.
V. S. Ostrenko, O. V. Vasilenko
doaj   +1 more source

Post‐Arc Transient Dielectric Recovery Characteristics of Vacuum Interrupter in the Large‐Capacity Generator Circuit Breaker

High Voltage, EarlyView.
ABSTRACT Large‐capacity generator circuit breaker (GCB) based on vacuum interrupter technology is the key power equipment to ensure the safe operation of the power system. When the short‐circuit current was forced to cross zero, the large‐capacity GCB was difficult to generate a zero‐voltage environment through freewheeling, the vacuum interrupter (VI)
Xiangyu Han, Fei Yang, Yili Chen, Yunqi Wang, Chenle Zhai, Xuliang Zhao, Zhaowei Diao, Yi Wu, Mingzhe Rong   +8 more
wiley   +1 more source

Real-Time Monitoring Method for Thyristor Losses in Ultra High Voltage Converter Station Based on Wavelet Optimized GA-BP Neural Network

IEEE Access, 2023
As the core equipment for AC/DC conversion in ultra-high voltage direct current (UHVDC) transmission systems, thyristor converter valves are the main source of losses in converter stations.
Jicheng Yu, Siyuan Liang, Yinglong Diao, Changxi Yue, Xiaodong Yin, Feng Zhou, Youhui Qiu, Jiangchao Qin   +7 more
doaj   +1 more source