Results 51 to 60 of about 3,163 (202)

Vibration characteristics of a single‐phase four‐column auto‐transformer core excited by geomagnetically induced currents

IET Electric Power Applications
During geomagnetic storms, geomagnetically induced currents (GICs) occur in the power grid. GIC is a quasi‐direct current, which is represented by using a fixed DC current, the authors propose an approach that combines field‐circuit‐coupled and weakly ...
Wenkai Xin, Chunming Liu, Guyue Wang, Ruopu Zhan, Bing Li, Zezhong Wang   +5 more
doaj   +1 more source

TO THE PROBLEM OF HIGH-VOLTAGE EQUIPMENT NOISE DIAGNOSTICS

Известия высших учебных заведений: Проблемы энергетики, 2018
Application possibilities of electrical power equipment noise diagnostics are shown. The diagnostics possesses increased depth and the enlarged reliability of diagnosing.
N. I. Ignatev
doaj   +1 more source

Influence of Short‐Circuit Current Nonperiodic Component Increasing on Radial Dynamic Stability of Power Transformer Winding Under Reclosing

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
This study examines the impact of reclosing on the radial dynamic stability of transformer windings, revealing that the reclosing short‐circuit current and associated electromagnetic forces significantly increase compared to initial short‐circuit conditions.
Yuefeng Hao, Jun Liu, Xiaoli Zhang, Weiwei Zhang   +3 more
wiley   +1 more source

Specific Issues of Equivalent Longitudinal Resistances Calculation for Three Windings Transformers [PDF]

Problems of the Regional Energetics, 2015
ccomplishing the aspirations of electrical power engineering consists, nowadays, in accurately determining the operating modes. Knowing the parameters of network elements is imperative for accurate solving the power flow regimes.
Golovanov N., Porumb R., Toader C., Bulac C., Triştiu I., Seritsan G.   +5 more
doaj  

Distribution of Currents in 2 × 25 kV Electric Railway Systems under Normal Conditions

International Transactions on Electrical Energy Systems, 2023
This article shows a detailed analysis of the distribution of currents in 2 × 25 kV electric railway systems under normal conditions. The network equations are clearly formulated in a way that enables the presentation of a novel simplified analytical ...
Elmer Sorrentino, Naren Gupta, Miguel Montilla-DJesus, Pablo Arriaga   +3 more
doaj   +1 more source

Modeling and Assessing Vulnerabilities of Aircraft Cyber–Physical Power Systems Based on Complex Network Theory

IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.
The concept of more electric aircraft (MEA) is a major trend in the aircraft industry. Compared to the conventional aircraft electrical power system (AEPS), the MEA–EPS has become more integrated and complex. The MEA–EPS demonstrates typical characteristics of a cyber–physical system (CPS) as a result of the implementation of intelligent management and
Chang Liu, Shuo Wang, Zhiyong Fan, Huixin Bai, Tianlei Zang, Jagabar Sathik   +5 more
wiley   +1 more source

Derivation of transformer winding equivalent circuit by employing the transfer function obtained from frequency response analysis data

IET Electric Power Applications
Precisely interpreting frequency response analysis (FRA) curves is crucial when investigating mechanical malfunctions in power transformer windings (TWs).
Zhi Zhang
doaj   +1 more source

Systematic Implementation and Performance Evaluation of Multiphase Power Converter in Medium Voltage Drive System

IET Energy Systems Integration, Volume 7, Issue 1, January/December 2025.
ABSTRACT Investigation of power converters for use in industrial drive applications finds that these converters are used low reliable components. To overcome this issue, in this paper, advanced power converters (multi‐pulse AC–DC and multilevel DC–AC converter) are developed and implemented to feed vector‐controlled induction motor drive (VCIMD), which
Bhim Singh, Rohit Kumar
wiley   +1 more source

Bridgeless Boost Pfc Converter Using The Three-state Switching Cell

Eletrônica de Potência, 2012
This paper introduces a bridgeless boost converter based on the three-state switching cell for PFC (power factor correction) applications, whose distinct advantages are reduced conduction losses with the use of magnetic elements with minimized size ...
Falcondes José Mendes de Seixas, Juan Paulo Robles Balestero, Claudiner Mendes de Seixas, Fernando Lessa Tofoli, Grover Victor Torrico Bascopé   +4 more
doaj   +1 more source

A low cost ""Air Mass 2'' solar simulator [PDF]

, 1974
Tungsten halogen projection lamps have integral ellipsoidal reflector, and hexagonal shaped plastic Fresnel lenses. Reflector is dichroic coated to reduce infrared content of reflected radiation. Array of lamps and lenses produces uniform collimated beam
Curtis, H. B., Harlamert, P., Jr., Yass, K.   +2 more
core   +1 more source