Results 11 to 20 of about 15,007 (312)
IET Power Electronics, 2021 In this paper, an interleaved zero voltage switching high step‐up converter based on active clamp, coupled inductor (CI), built‐in transformer (BIT), and switched capacitor (SC) is proposed.
Alireza Bagherian +3 more
doaj +1 more source
IET Power Electronics, 2021 This paper presents a new method for driving the magnetron for a sulfur plasma tube using the two‐switch forward converter structure with a phase‐shifting active clamp (1000±40 W, 285 mA, 4 kV).
Abolfazl Nasiri, Mohamad Reza Banaei
doaj +1 more source
IET Generation, Transmission & Distribution, 2021 The reality of modern power grids requires the use of flexibilities from generation, load and storage. These flexibilities allow system operators to modify a transformer loading in a smart way. Therefore, power constraints of transformers can be overcome
Ildar Daminov +3 more
doaj +1 more source
IET Science, Measurement & Technology, 2021 Considering that the working temperature is much higher in high‐voltage direct‐current (HVDC) convert transformers than in conventional AC transformers, the combination of thermally upgraded paper and natural ester might be a better choice to withstand ...
Runhao Zou +4 more
doaj +1 more source
IET Science, Measurement & Technology, 2021 This paper utilizes a hybrid Debye model to accurately simulate the relaxation response process of the oil‐paper insulation of a transformer to explore the application of frequency domain dielectric spectroscopy (FDS) in nondestructive diagnosis of the ...
Yang Zou +3 more
doaj +1 more source
Ageing of DC conduction in thermally aged oil‐impregnated pressboard
IET Science, Measurement & Technology, 2021 Ageing of the conduction process in a dielectric allows a better understanding of the phenomena. Available literature shows that the DC conductivity of oil impregnated pressboard increases with applied electric stress, particularly above 40 °C.
Nasirul Haque +3 more
doaj +1 more source
IET Science, Measurement & Technology, 2021 In this research, the authors concentrated on a rarely studied part in the power transformer's insulation structure: the connection part of radial and axial spacers. An experimental model was constructed to simulate this part.
Li Lu +2 more
doaj +1 more source
Prevention of the current transformer saturation by using negative resistance
IET Generation, Transmission & Distribution, 2021 In the power grid, various conditions may occur that saturate the core of a current transformer. Saturation of the protection core of the current transformers can cause a malfunction in the protection relays.
Saeed Sanati, Yousef Alinejad‐Beromi
doaj +1 more source
Journal of Energy - Energija, 2020 Power transformers and shunt reactors are strategic assets for every system operator and their downtime should be kept as low and controlled as possible. During their multi-decade service life, they are regularly exposed to transient overvoltages.
T. Zupan +5 more
semanticscholar +1 more source
Optimal security-constrained power scheduling by Benders decomposition [PDF]
, 2006 This paper presents a Benders decomposition approach to determine the optimal day-ahead power scheduling in a pool-organized power system, taking into account dispatch, network and security constraints.
Fernández, José L. +2 more
core +2 more sources