Results 51 to 60 of about 934 (179)

ELECTRIC STRENGTH OF ARRESTER FOR LIGHTING SHIELDING OF 6-35 KV TRANSMMCSION LINE WITH LIGHTNING OVERVOLTAGE

Записки Горного института, 2018
The most common device for protection against overvoltages is a valve-type arrester. Due to obsolescence it is proposed to replace valve-type arresters with nonlinear overvoltage limiters or multi-chamber arresters.
R. A. Bel'skii, V. Ya. Frolov, G. V. Podporkin   +2 more
doaj   +1 more source

Multimethod Microstructural Diagnostics of Polymer Electrolyte Membrane Water Electrolysis Cell Components Uncovering Diverging Degradation Pathways After Short‐Term Testing

ChemElectroChem, Volume 13, Issue 12, 17 June 2026.
This study probes why polymer electrolyte membrane electrolyzers lose efficiency under different operating profiles. Using electrical tests, microscopy, and spectroscopy, Ti‐PTL passivation is established as the dominant cause for increased Ohmic resistance in samples aged under constant and triangular current profiles for 88 h.
Annik Bernhardt, Fabian Pascher, Robert Göckeritz, Angelika Hähnel, Alexander Müller, Erik Grunwald, Tobias Albrecht, Thomas Ackermann, Finn Ostermeyer, Wolfram Münchgesang, Michael Bron, Kerstin Witte‐Bodnar, Volker Naumann, Klemens Ilse   +13 more
wiley   +1 more source

Overvoltage Crowbar Protection Based on Passive Power Supplied Control Unit

Power Electronics and Drives
The increase in the involvement of renewable energy sources results in a high rate of semiconductor power converter applications. The power converters provide interconnections of DC microgrids with AC distribution lines.
Strossa Jan, Damec Vladislav, Sobek Martin, Cyprich Pavel, Cyprich Petr, Kubatko Marek   +5 more
doaj   +1 more source

Automatic detection device for mining intrinsic safety power supply based on PWM

Meikuang Anquan
Aiming at the problems of cumbersome factory inspection steps, low inspection efficiency, and poor consistency of protection parameter measurement results for intrinsically safe power supplies used in mining, a high-precision fully automatic factory ...
Dedong ZOU
doaj   +1 more source

Analysis of Overvoltages Appearing in One-Sidedly Ungrounded MV Power Cable Screen

Energies, 2020
Changing the connection type of a medium voltage (MV) cable screen is linked to a decrease in power loss, although it may also lead to the generation of overvoltage in a metallic cable screen, which is hazardous for proper cable line work. In this paper,
Aleksandra Schött-Szymczak, Krzysztof Walczak   +1 more
doaj   +1 more source

Self‐Assisted Charge Storage‐Release Mechanism Enabling Flexible Design of Biomimetic Triboelectric Nanogenerators

Advanced Science, Volume 13, Issue 34, 19 June 2026.
Inspired by the mimosa, this study develops a flexible triboelectric nanogenerator with a novel microneedle array and battery‐mimetic architecture. The device introduces a spontaneous charge self‐regulation mechanism that confines the electric field below the air breakdown threshold, and achieves an outstanding charge density of 396.50 µC m−2 ...
Hanpeng Gao, Yamin Hu, Li Li, Ana Sofia Oliveira Henriques Moita, Xi Wang, Zong Meng, Zhiwu Han, Yan Liu   +7 more
wiley   +1 more source

Mechanism and suppression of breaking overvoltage of DC circuit breakers

High Voltage
The occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and
Lu Qu, Zhangqing Yu, Zhizheng Gan, Xin Yan, Cheng Jiang, Yulong Huang, Mingshen Li, Jian Feng   +7 more
doaj   +1 more source

Coordinated DC Fault Ride‐Through Control for a Grid‐Forming Wind‐Storage System With VSC‐HVDC Integration Under Transmission Constraints

Engineering Reports, Volume 8, Issue 6, June 2026.
Due to complex wind farm conditions, a coordinated control system was designed. It manages DC power surges during AC faults by temporarily storing excess energy and regulating voltages. This strategy optimizes unbalanced power and enables effective fault recovery, resulting in minimal voltage fluctuations and superior performance.
Lei Chen, Qi Han
wiley   +1 more source

Real‐Time Data‐Driven Fault Diagnosis of Photovoltaic Arrays Using an Edge‐Server Machine‐Learning Framework

Energy Science &Engineering, Volume 14, Issue 6, Page 2961-2982, June 2026.
A real‐time, data‐driven framework detects and classifies photovoltaic array faults using edge sensing and server‐side machine learning. Ensemble tree models achieve near‐perfect accuracy with low latency, enabling practical, low‐cost deployment for reliable PV monitoring and intelligent maintenance.
Premkumar Manoharan, Sowmya Ravichandran, Deepak Kumar Sinha, Chandran Ramakrishnan, Omar Almomani   +4 more
wiley   +1 more source

Advances and Current Progress of Dopant Engineering on All‐Inorganic Halide Perovskites Toward High‐Performance Scintillating Materials

MetalMat, Volume 3, Issue 2, June 2026.
This review provides the latest advancement on lead‐free all‐inorganic perovskites, covering fundamental aspects, emerging synthetic routes, and scintillation properties. We highlight the dopant engineering strategy to favor the formation and efficient radiative recombination of self‐trapped excitons and the future development direction for the next ...
Galfin Anderias Adu, Viona Maria Djojo, Livia Janice Widiapradja, Noor Nisa Fayyaza, Lina Jaya Diguna, Muhammad Danang Birowosuto, Arramel Arramel   +6 more
wiley   +1 more source