Results 71 to 80 of about 426,824 (203)

Prediction Method of Closing Action Time of Vehicle Pneumatic Main Circuit Breaker Based on PCA and GBDT Algorithm

World Electric Vehicle Journal
The switching action of the main circuit breaker of the train will produce switching overvoltage. In order to suppress the switching overvoltage, the phase selection control of the circuit breaker is required.
Ruoyu Li, Qingfeng Wang, Jianqiong Zhang, Xiangqiang Li   +3 more
doaj   +1 more source

Design and Simulation of a Carrier PWM‐Based Capacitor to Support a Dynamic Voltage Restorer for Voltage Swell and Voltage Mitigation in the Distribution System

Engineering Reports, Volume 8, Issue 7, July 2026.
This study designs and simulates a capacitor‐supported dynamic voltage restorer (DVR) using Carrier PWM control to mitigate voltage sags, swells, and distortions in three‐phase distribution systems. The self‐supported DVR employs a DC‐link capacitor as an energy buffer, eliminating external storage needs. Control via Synchronous Reference Frame Theory (
Tamiru Debela Awas, Lidetu Abu Bedadi, Ginbar Ensermu, Berhanu Deggefa   +3 more
wiley   +1 more source

Overvoltage Ruggedness and Dynamic Breakdown Voltage of P-Gate GaN HEMTs in High-Frequency Switching up to Megahertz

, 2022
Surge-energy and overvoltage ruggedness of power devices are desired in many power applications. For the GaN high-electron-mobility transistor (HEMT), a device without avalanche capability, its surge-energy and overvoltage ruggedness are both determined ...
Li, Qiang, Zhang, Yuhao, Zhang, Ruizhe, Song, Qihao   +3 more
core   +1 more source

A Novel Digital Twin Platform for Accelerating Power Systems Restoration

Energy Internet, Volume 3, Issue 2, Page 111-141, July 2026.
Hardware Architecture Design of DT System in Laboratory. ABSTRACT With the global energy structure transforming towards the goal of net zero emissions, the penetration of an inverter‐based resource (IBR) in power systems is increasing. This transformation poses two critical challenges: the system post blackout restoration process becomes extremely ...
Yiliang Fan, Xiaolin Ding, Ray Zhang, Yucong Zhao, Nan Chen, Xiao‐Ping Zhang, Yixin Li, Chengyi Wu, Wenyan Qian   +8 more
wiley   +1 more source

Commutation failure caused by AC filter switching In HVDC system

The Journal of Engineering, 2019
Switching AC filter may cause harmonic impact, which may lead to commutation failure of HVDC system. Here, the commutation failure mechanism of HVDC system caused by AC filter switching is studied.
Meng Liu, Lei Zheng, Fangfang Shi, Kuan Li   +3 more
doaj   +1 more source

Calculation of switching overvoltage in direct-current hybrid contactors and methods of its limitation

, 2009
Проведен анализ способов ограничения коммутационных перенапряжений, прикладываемых к силовым полупроводниковым приборам полупроводниковых ключей гибридных контакторов при коммутации цепей постоянного тока.
Сабалаева, Наталья Олеговна, Сосков, Анатолий Георгиевич   +1 more
core   +2 more sources

Simulation computing of possible limitation of switching overvoltage with installation of RC damper

, 2018
Předkládaná diplomová práce je zaměřena na omezení spínacích přepětí pomocí RC článků na hladině vysokého napětí. Popisuje různé druhy přepětí a druhy ochran proti přepětí.
Hulec, Martin
core  

Enhanced Efficiency and Power Density in Next-Gen Power Electronics Through Zero Overvoltage Switching

High-voltage power electronics, utilizing wide-bandgap devices, can realize superior efficiency and power density designs compared to silicon-based power electronics.
Eckardt, Bernd, März, Martin, Matlok, Stefan, Kerscher, Moritz, Schmied, Nico   +4 more
core   +1 more source

Efficient Control of IGBT Transistor as Part of Overvoltage Protection

, 2017
The paper analyzes the phenomena of appearance of overvoltage during the switching-off of the IGBT transistor which arecaused by the presence of parasitic inductance in the switching circuit.
Jovančić, Nenad, Hadžimejlić, Nijaz, Ćeklić, Pero   +2 more
core   +2 more sources

Impact of Parasitics and Load Current on the Switching Transient Time and Motor Terminal Overvoltage in SiC-Based Drives [PDF]

, 2020
The fast switching speed of silicon carbide (SiC) MOSFETs has enabled converters to operate at higher switching frequencies with enhanced efficiencies, achieving performance improvement in motor drive systems.
Yuan, Xibo, Zhou, Wenzhi, Diab, Mohamed
core