Results 81 to 90 of about 1,562 (203)

Análise e previsão dos pulsos de tensão nos terminais dos motores de indução alimentados por inversores de frequência [PDF]

, 2004
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.A análise e a previsão dos pulsos de tensão sobre os terminais dos motores de indução alimentados por inversores de ...
Mello, Hugo Gustavo Gomez
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Optimum reactive power compensation methodology to minimize system overvoltage conditions

, 2017
Sri Lankan Power system has experienced power frequency over voltages at steady state conditions predominantly at New Anuradhapura, New Chilaw and Chunnakam Grid Sub Stations. New Anuradhapura being connected to the lengthiest 220kV transmission lines
Perera, CKS
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Fundamental Modeling of the Switching Transition in High-Speed Power Electronics

IEEE Access
Recent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
doaj   +1 more source

THE RESONANT OVERVOLTAGE IN NON-SINUSOIDAL MODE OF MAIN ELECTRIC NETWORK

Electrical engineering & Electromechanics, 2018
Purpose. The resonant overvoltage arises in main electrical networks as a result of random coincidence of some parameters of circuit and its mode and it may exist for a relatively long time.
V. G. Kuznetsov, Yu. I. Tugay, V. V. Kuchanskiy, Yu. G. Lyhovyd, V. A. Melnichuk   +4 more
doaj   +1 more source

HV isolated power supply system for complex multiple electrical potential equipment in 500 kV hybrid DC breaker

High Voltage, 2019
High-voltage direct current circuit breakers (HVDC CB) are one of the key technologies of multi-terminal DC systems and DC grids. Different from other equipment that use a large number of power electronic devices, the HVDC CB cannot obtain its power from
Xiangyu Zhang, Zhanqing Yu, Zhanqing Yu, Rong Zeng, Meng Zhang, Yuehuang Zhang, Fengliang Xiao, Wei Li   +7 more
doaj   +1 more source

Development of a Power Factor Corrected High Current Supercapacitor Charger for a Surge Resistant UPS

, 2012
The Uninterrupted Power Supplies (UPSs) provide short term power back up to electrical loads when the mains power fail. Usually UPSs employ battery packs as the energy storage device.
Zhang, Xu
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FAST FREQUENCY MODEL OF OVERVOLTAGE IN ADJUSTABLE SPEED DRIVES: SiC TECHNOLOGY VS. IGBT TECHNOLOGY

, 2018
International audienceThe use of fast semiconductor components such as IGBT and SiC in Adjustable Speed Drives (ASD) increases power density and provides better controllability.
Belinger, Antoine, Malec, David, Taghia, Bouazza, Piquet, Hubert, Carayon, Jean-Pierre   +4 more
core   +1 more source

SiC MOSFET turn-off overvoltage measurement

International audienceSelecting the appropriate measurement system is crucial in power electronics. This is especially important during MOSFET's turn-off process, where it is essential to measure the voltage rise and accurately capture the peak ...
Galdeano, Mikel, Elizondo, David, Sanchis, Pablo, Barrios, Ernesto, L   +3 more
core   +1 more source

Modelagem de transformadores em função da frequência [PDF]

, 2007
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Os transformadores desempenham um papel importante nos sistemas elétricos. Ao longo do tempo as técnicas de construção e
Januário, Marconi
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MULTIVULATED FREQUENCY-REGULATED ELECTRIC DRIVE OF CORD WRAPPING LINE

, 2018
The urgency of the work is due to the need to develop a multi-motor frequency-controlled electric drive for cord clipping lines. The study of the construction of energy-efficient multi-motor drives, with the help of reversible frequency converters, which
E. N. Gavrilov, N. I. Gorbachevsky, S. N. Sidorov   +2 more
core   +1 more source