Results 61 to 70 of about 2,517,738 (175)
IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.This study introduces an adaptive speed control strategy for fast mechanical switches using an IGBT fully controlled driving circuit. The approach combines PWM‐based current shaping with an intelligent secant algorithm to regulate opening speed in real time without hardware changes.
Wei Li +4 more
wiley +1 more source
Modelling of Metal Oxide Surge Arresters in Simulation Software DYNAST [PDF]
, 2020 This paper describes the possibilities for mathematical modelling of gap-less surge arresters in simulation software DYNAST. This tool does not belong to standard modelling softwares in the field of electric power engineering.
Jan Veleba +3 more
core +1 more source
Reliable directional relaying for T-Connected Series-Compensated transmission lines
Scientific ReportsThis article introduces an extensive directional relaying algorithm designed for series-compensated transmission lines. The proposed algorithm relies on observing the locus of the calculated impedance of the change of the positive-sequence circuit.
Mahmoud A. Elsadd +2 more
doaj +1 more source
IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.This study comparatively assesses lightning‐overvoltage propagation to the transformer high‐voltage terminal and hydrogenerator busbar of a hydropower plant under prescribed lightning‐current injection and selected nonideal conditions of a station‐side metal‐oxide arrester.
Jiachen Zhang +9 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.A new evolutionary search algorithm based on improved Particle Swarm Optimisation (PSO) is introduced in this study to estimate the phasor. The performance has been evaluated through extensive simulations considering transient components, harmonics, and frequency changes in noiseless and noisy conditions.
Seyedeh Mina Abed Shiadeh +2 more
wiley +1 more source
The Microstructural Location of the Intergranular Metal Oxide Phase in a Zinc Oxide Varistor [PDF]
, 1977 High resolution electron microscopy of a commercial ZnO based varistor reveals that the Bi-rich intergranular phase is found at all three and four grain junctions and that the majority of ZnO grains are not surrounded by an oxide barrier film as hitherto
Clarke, D. E, Clarke, D. E.
core
Porosity through reduction in metal oxides [PDF]
, 2008 Routes to porous materials with nanoscale dimensions have been investigated. In the first example presented, porous manganese oxide has been prepared by leaching Ni metal from a nickel-manganese oxide precursor via reduction.
Seshadri, R. +2 more
core +1 more source
A Self‐powered LVDC Solid‐State Circuit Breaker Using Low Voltage Step‐Up DC/DC Converter
IET Power Electronics, Volume 19, Issue 1, January/December 2026.This paper introduces a self‐powered LVDC solid‐state circuit breaker that harvests the forward drop of a Schottky diode via an ultra‐low voltage step‐up converter, eliminating the need for an auxiliary supply. A parallel MOSFET‐SCR conduction path and a Hall‐effect‐based electromagnet enable autonomous fault detection and tripping for both fast and ...
Dewan Mohammad Asad +3 more
wiley +1 more source
Electron paramagnetic resonance study of ZnO varistor material
, 2014 Matsuoka-type zinc oxide (ZnO) varistor material was synthesized using a conventional solid-state reaction method. X-band electron paramagnetic resonance (EPR) data revealed that Mn ions substitute in the ZnO lattice with a 2+ paramagnetic state. Co ions
Zierep, Paul +4 more
core +1 more source
IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.This paper tries to improve dynamic behavior of a wind farm through a multi‐functional bridge‐type series capacitor which can be effective in (1) resonance suppression, (2) connectivity improvement, and (3) LVRT improvement. ABSTRACT The sub‐synchronous oscillations/resonances in renewable resources specially in type‐4 permanent magnet synchronous ...
Mirhamed Pourmirasghariyan +6 more
wiley +1 more source