Results 31 to 40 of about 3,163 (202)
A new hybrid cycloconverter with smooth output voltage generation capability and accurate control of the circulating current [PDF]
, 2006 Nowadays, power electronic converters based exclusively on IGBTs deliver excellent load side performance up to megawatt powers in the low voltage range (200-690V) and are steadily gaining performance in the medium voltage range as well.
Clare, Jon +2 more
core +1 more source
A DC/DC autotransformer with integrated fault blocking capability
Zhejiang dianli, 2023 As crucial equipment for multi-voltage DC interconnection， high-capacity high-voltage DC/DC converters can be used for voltage conversion and DC fault isolation.
LU Yi +5 more
doaj +1 more source
Frequency Diagnostics of Insulating System of Power Transformers
Electrical, Control and Communication Engineering, 2020 The paper presents experimental diagnostics of the oil-paper insulating system of power transformers using progressive frequency method. The first part of the paper deals with the basic information about diagnostics of power oil transformers.
Gutten Miroslav +3 more
doaj +1 more source
Three phase converter with galvanic isolation based on Loss-Free Resistors for HB-LED lighting applications [PDF]
, 2016 This work presents a driver for High-Brightness Light-Emitting Diodes (HB-LED) in three-phase grids, which complies with IEC 1000-3-2 Class C requirements, achieves high Power Factor (PF), low harmonic distortion, as well as, the capability to achieve ...
Arias Pérez de Azpeitia, Manuel +4 more
core +1 more source
Energies, 2018 With the evolution of the More Electric Aircraft (MEA) concept, high pulse converters have gained the attention of researchers due to their higher power quality.
Shahbaz Khan +5 more
doaj +1 more source
Partial Discharge Pattern Recognition Based on Time‐Frequency Multi‐Scale Residual Attention Network
IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.A time‐frequency multi‐scale residual attention network (TFMRAnet) was designed to analyze partial discharge (PD) signals. The network comprises an adaptive denoising network based on multi‐scale residual attention, a frequency‐domain recognition network, and a decision fusion module based on Dempster‐Shafer (D‐S) evidence theory.
Yunguang Gao +4 more
wiley +1 more source
MathematicsIn the evolution of the modern “More Electric Aircrafts” (MEAs) concept, higher-pulse rectification systems using differential fork autotransformers play a pivotal role.
Hani Albalawi +3 more
doaj +1 more source
A Novel Ground Fault Identification Method for 2 × 5 kV Railway Power Supply Systems
Energies, 2015 The location of ground faults in railway electric lines in 2 × 5 kV railway power supply systems is a difficult task. In both 1 × 25 kV and transmission power systems it is common practice to use distance protection relays to clear ground faults and ...
Jesus Serrano +3 more
doaj +1 more source
Energy Science &Engineering, Volume 13, Issue 12, Page 6221-6234, December 2025.18‐pulse AC/DC converter with T‐connected autotransformer for feeding VCAMD. ABSTRACT Reducing harmonics in alternating current (AC) input and ripples in direct current (DC) output enhances power quality, achievable through multi‐pulse converters (MPCs). This study presents the design, simulation, and analysis (in MATLAB/Simulink) of an autotransformer‐
Mohammad Yousefzadeh +4 more
wiley +1 more source
Space Weather, Volume 23, Issue 11, November 2025.Abstract Geomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms. GICs in the electric power grid can cause damage to electric power transformers, system failures, and wide‐scale blackouts.
Hannah G. Parry +4 more
wiley +1 more source