Results 81 to 90 of about 2,670,785 (225)
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
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
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
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
Temperature monitoring of metal oxide surge arresters [PDF]
, 2013 Varistor overtemperature above the ambient is an important state parameter of metal oxide surge arresters. The temperature monitoring using passive SAW sensors enables realisation of a surge counter function, an energy monitor, monitoring of electrical ...
Hinrichsen, V., Chrzan, K L
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IET Smart Grid, Volume 9, Issue 1, January/December 2026.This paper presents a deep Bidirectional Gated Recurrent Unit (Bi‐GRU)‐based protection scheme for series‐compensated transmission lines using only local voltage and current measurements. The proposed method extracts fundamental‐frequency phasors through discrete Fourier transform and is trained on a comprehensive dataset covering various compensation ...
Majid Khezerloo +2 more
wiley +1 more source
Back Flash Overvoltage Damages All DC/AC Converters in Photovoltaic Systems
IEEE AccessThis research addresses real faults in photovoltaic (PV) systems in Cuba, as these faults result in damage to all converters, whether in operation or not, when atmospheric discharge strikes nearby.
Osmel Perez Baluja +4 more
doaj +1 more source
Metal Oxide Surge Arresters under Nonsinusoidal Voltage Stresses [PDF]
, 2019 Tato práce se zabývá vlivem vysokofrekvenčního napěťového zkreslení na omezovače přepětí pro vysokonapěťové aplikace. V rešeršní části jsou nejprve rozebrány základní typy svodičů používaných v soustavách vysokého napětí.
Ivan Chromeček
core
Zno varistor of low-temperature sintering ability
, 2011 [[abstract]]Zinc oxide (ZnO) varistors containing vanadium oxide as the principal additive and one or more cobalt oxides and/or manganese oxides additives exhibit excellent nonlinear current-voltage characteristics.
Wu, Tai-Bor;Tsai, Jyh-Kuang
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