Results 61 to 70 of about 3,163 (202)

A Novel Approach for Mitigating Electrical Losses and Current Unbalance in Low Voltage Distribution Networks

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
In this method, by increasing the degrees of freedom of the unbalanced IEEE 906 bus low‐voltage reference network through load transfer switches, the optimal network configuration is proposed using a meta‐heuristic algorithm to solve this constrained large‐scale optimization problem for the purpose of electrical losses reduction.
Pooya Najafi Zanjani, Shahram Javadi, Mahmood Hosseini Aliabadi, Gevork B. Gharehpetian   +3 more
wiley   +1 more source

Calculation of Transformer and Autotransformer Resources in Automatic Control Systems of Technological Processes at Substations

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2009
The paper proposes algorithms for calculation of transformer and autotransformer resources and control of thermal condition of windings using hardware and software of automatic control systems of technological processes at substations.The given software ...
V. V. Bourliuk, S. N. Zherko
doaj   +1 more source

No Load Simulation and Downscaled Experiment of UHV Single-Phase Autotransformer Under DC Bias

IEEE Access, 2020
The time-domain field-circuit coupled finite element method (FEM) is widely used to analyze the DC effects on transformers. However, the long transient process of calculation will encounter difficulties due to the tremendous requirement of computer ...
Bing Li, Zezhong Wang, Suxin Guo, Mingyang Li   +3 more
doaj   +1 more source

Measuring equivalent circuits [PDF]

, 1960
"October 22, 1960.""Reprinted from Volume XXII, Proceedings of the American Power Conference.""The equivalent circuit is a familiar tool to power system engineers. Today's large interconnected power systems often are studied as electric networks in which
Hogan, J.C., Verrall, V.E.
core  

Design and implementation of a full analogue gate driver for current compensation of paralleled SiC‐MOSFETs

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
This paper designs and implements a fully analogue gate driver for current compensation of paralleled SiC‐MOSFETs. Silicon carbide MOSFETs have current ratings that are not sufficiently high to be used in high‐power converters. It is necessary to connect several MOSFETs in parallel in order to increase current capabilities.
Adel Rezaeian, Ahmad Afifi, Hamid Bahrami   +2 more
wiley   +1 more source

An Isolated SEPIC‐Based AC‐AC Converter for Voltage Sag/Swell Mitigation

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
ABSTRACT This paper proposes a high‐frequency isolated buck‐boost AC‐AC converter based on the single‐ended‐primary‐inductance‐converter (SEPIC) topology and its extension circuit with bipolar output. The proposed converters can achieve a wide range of voltage step‐down and step‐up operations with both same‐ and reversed‐phase outputs.
Iman Abdoli, Alireza Lahooti Eshkevari, Hafiz Furqan Ahmed, Mohammad Arasteh   +3 more
wiley   +1 more source

Electromagnetic processes in traction supply system of 2×25 kV with catenary supports disconnected from the railway track

Вестник Научно-исследовательского института железнодорожного транспорта, 2016
The article explains the possibility of refusal of application of catenary supports of railway track for grounding and use an artificial grounding conductor for this purpose.
A. B. Kosarev
doaj  

Wavelet analysis of geomagnetically induced currents during the strong geomagnetic storms

Russian Journal of Earth Sciences, 2022
The main problem of electric utilities around the world is to ensure continuous power supply to consumers. One of the causes of power outages and blackouts can be geomagnetic storms during periods of the increased solar activity.
Aksenovich Tatyana, Bilin Vladislav, Sakharov Yaroslav, Selivanov Vasiliy   +3 more
doaj   +1 more source

Hybrid IGBT/IGCT‐Based DC‐Hub for Interconnection of VSC/LCC Future DC Networks

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
ABSTRACT The interest in interconnecting multiple DC grids‐ medium‐voltage direct current/high‐voltage direct current (MVDC/HVDC)‐ across the globe has grown significantly in recent years. This interest is primarily driven by the benefits of increased reliability and cost efficiency in power transmission systems, particularly with the growing ...
Mohamed Mansour, Yousef N. Abdelaziz, Ahmed A. Aboushady, Fahad Alsokhiry, Khaled H. Ahmed, Ayman S. Abdel‐khalik, Ahmed Abdulwhab   +6 more
wiley   +1 more source

A Common Ground Nine‐Level Switched Capacitor Inverter Having Quadruple Boosting Capability for Solar Photovoltaic Applications

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
This paper eliminates the conventional high‐gain DC‐DC converter by a novel single‐source reduced‐switch common ground (CG) nine‐level switched capacitor (SC) inverter, which has quadruple boosting capability. The proposed inverter has eleven switches, among which nine switches are driven at higher frequency while being clamped by low capacitor ...
Muneeb Afroz Bhat, Mohammad Zaid, Adil Sarwar, Farhad Ilahi Bakhsh, Mohd Tariq, Shafiq Ahmad, Md. Rasidul Islam   +6 more
wiley   +1 more source