Results 61 to 70 of about 431,967 (309)

Differential Protection of a Three-Phase Power Transformer Using Hall Effect Current Transducer [PDF]

open access: yes, 2002
In a power system, transformers and other electrical equipment need to be protected not only from short circuit, but also from abnormal operating conditions, such as over loading, and differential fault protection.
Fathollahi Fard, Ali Asghar
core  

Less-conventional low-consumption galvanic separated MOSFET-IGBT gate drive supply [PDF]

open access: yes, 2017
A simple half-bridge, galvanic separated power supply which can be short circuit proof is proposed for gate driver local supplies. The supply is made while hacking a common mode type filter as a transformer, as the transformer shows a good insulation, it
Bikorimana, Jean Marie Vianney   +1 more
core   +3 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Microelectromechanical Systems (MEMS) Resistive Heaters as Circuit Protection Devices [PDF]

open access: yes, 2013
With increased opportunities for the exploitation (i.e., reverse engineering) of vulnerable electronic components and systems, circuit protection has become a critical issue.
Coutu, Ronald A., Jr., Ostrow, Scott A.
core   +1 more source

Algorithm and Software for Operative Calculations of the Short Circuits Modes [PDF]

open access: yes, 2015
Smart power grids provide efficient control of power flows or other grid variables, such as voltages or short circuit currents. Most essential the control has become, if the consumers are electrical systems of high power capacity.
Borisov, Stanislav   +2 more
core   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin   +5 more
wiley   +1 more source

Improved Short-Circuit Current Calculation of Doubly Fed Wind Turbines With Uninterrupted Excitation

open access: yesFrontiers in Energy Research, 2021
With the enlarging scale of a doubly fed induction generator (DFIG) connected to a power system, the influence of short-circuit current on the system relay protection could not be ignored.
Jun Yin
doaj   +1 more source

Analisa Proteksi Arus Lebih Gangguan Tanah pada Feeder Gardu Induk Garuda Sakti [PDF]

open access: yes, 2017
There are a lot of disruption in the distribution of electrical energy which can result in interruption of the power supply to the load. It is necessary for the protection or security system that is reliable to anticipate when an interruption occurs ...
Arisantha, G. (Grace), Hamdani, E. (Edy)
core  

Bias‐Free Highly Efficient and Stable Dye‐Sensitized Photoelectrochemical Cells via Cascade Charge Transfer

open access: yesAdvanced Functional Materials, EarlyView.
A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park   +8 more
wiley   +1 more source

Analisa Proteksi Differensial pada Generator di Pltu Suralaya [PDF]

open access: yes, 2017
Power plants produce electrical energy that will be distributed to consumers. Hence, the power plant is expected to be in a condition which means it can reliably provide electricity continuously with good quality.
Jurnal, R. T. (Redaksi)
core  

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