Electronic overcurrent protection of the laboratory autotransformer [PDF]
This bachelor thesis provides an overview of the operating principles of autotransformers. It describes their characteristics, advantages and disadvantages in comparison to transformers. The thesis also focuses on fuses and circuit breakers and discusses
Lacko, Michael
core
Surface tracking along the interphase barrier of a large transformer [PDF]
, 2017 Partial Discharge (PD) measurements are an important tool for assessment of the condition of the insulation systems of power equipment such as high voltage transformers. One of the most dangerous failure modes in a large autotransformer is due to surface
Thansiphraserth, W. +3 more
core +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 +3 more
wiley +1 more source
Dual Winding Induction Machine Based Grid‐Tied Inverting System
IET Power Electronics, Volume 18, Issue 1, January/December 2025.In this paper, we show a machine interface for renewable energy integration: a dual winding induction machine (DWIM) based inverting system. The DWIM‐based inverting system can effectively alleviate the problems such as wideband oscillations, inertia deficiency and weakened grid strength, caused by the high penetration of power electronic equipment ...
Fangquan Bao +3 more
wiley +1 more source
Laboratory tests on the influence of the power substation with Scott transformer on the energy qualily in the supplying grid [PDF]
, 2015 Niniejszy artykuł przedstawia wyniki badań wpływu autotransformatorowego systemu zasilania 2 x 25 kV z transformatorem Scotta na jakość energii elektrycznej w publicznej sieci zasilającej.
Burak-Romanowski, R., Jefimowski, W.
core
Operación del sistema de potencia a escala del laboratorio físico de Sistemas Eléctricos de Potencia : operación de los sistemas trifásicos de transmisión eléctrica: transformador LTC en serie con línea sin transposición y transformador PST en serie con línea con transposición. [PDF]
, 2022 El presente trabajo contiene los resultados de las pruebas realizadas en los equipos disponibles en el Laboratorio Físico de Sistemas Eléctricos de Potencia.
Pillajo Pillajo, Christian Alberto
core
The effect of heat on the metallurgical structure and B-H characteristic of (stator) armature with iron-silicon alloy in electric machines [PDF]
, 2010 Coils in electric machines are varnished for insulation after winding. These varnished coils are formed in stiff construction in slots. Under heavy-duty operating conditions, all or part of some coils may be burnt or broken.
TERZİ, ÜMİT KEMALETTİN
core +2 more sources
Surface tracking along the interphase barrier of a large transformer: effect of moisture within barrier board [PDF]
, 2018 Partial Discharge (PD) measurements are an important tool for assessment of the condition of the insulation systems of power equipment such as high voltage transformers. One of the most dangerous failure modes in a large autotransformer is due to surface
Thansiphraserth, W. +3 more
core +1 more source
Electronicly controlled isolating autotransformer [PDF]
The goal of this work was to build a universal fully controllable laboratory power supply with AC output voltage. Main emphasis has been put on the final quality and durability of the power supply.
Nedoma, J.
core +2 more sources
Interactions within heterogeneous systems of uncontrolled rectifiers for aircraft electrical power systems [PDF]
, 2011 There is an increase in the use of multi-pulse, rectifier-fed motor-drive equipment on board more-electric aircraft. Motor drives with feedback control appear as constant power loads to the rectifiers, which can cause instability of the DC filter ...
A. Forsyth +5 more
core +1 more source