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Fault location algorithm for primary distribution feeders based on voltage sags
(2008-01-01)
Aiming at reaching the best quality in terms of supplying and services, some utilities are using more and more automation and instrumentation devices in its networks. Thus, in a new scenario, voltage sags are available ...
Real-Time Voltage Regulation in Power Distribution System Using Fuzzy Control
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
Two different fuzzy approaches to voltage control in electric power distribution systems are introduced in this paper. The real-time controller in each case would act on power transformers equipped with under-load tap ...
Fuzzy Control System for Voltage Regulation In Power Transformers
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
A fuzzy control strategy for voltage regulation in electric power distribution systems is introduced in this article. This real-time controller would act on power transformers equipped with under-load tap changers. The ...
A medição da grandeza practical peak voltage na prática radiológica
(Colégio Brasileiro de Radiologia e Diagnóstico por Imagem, 2009)
OBJETIVO: O objetivo deste trabalho foi estudar a grandeza practical peak voltage (PPV), determinada a partir da forma de onda de tensão aplicada a tubos radiológicos, e compará-la com algumas definições de kVp para ...
The influence of harmonics from non-linear loads in the measuring transformers of electrical substations
(2006-04-01)
The mainstreams of research papers developed to analysis of electrical systems power quality for non-linear loads are conducted for low voltage feed. This, if in one hand have furnished important results about the performance ...
Optical Phase Detection Method for Measurements and Calibration of Pockels Cell-Based Sensors
(Ieee-inst Electrical Electronics Engineers Inc, 2020-12-01)
Nowadays, the most successful optical technique developed for measuring high voltages in 50-/60-Hz electric power lines utilizes the bulk lithium niobate Pockels cell, constituting the so-called optical voltage sensor ...
Modular Multilevel Converter Based Topology for High-Speed, Low-Voltage Electric Drives
(IEEE-Inst. Electrical Electronics Engineers, 2020)
The increasing demand for higher power density and more efficient electric drives, in particular, from the automotive industry, has pushed engineers investigating new solutions. Recently, wide bandgap devices have been ...
Observer-Based Grid-Voltage Sensorless Synchronization and Control of a VSI-LCL Tied to an Unbalanced Grid
(Institute of Electrical and Electronics Engineers, 2019-07)
This paper proposes an observer-based grid-voltage sensorless strategy that allows to implement the synchronization and control of an LCL grid-tied voltage source inverter. By using exclusively the measurement of the current ...
Nanotubes growth on Ti-15Mo alloys by anodization at low voltage
(2016-01-01)
Surface modification by nanotubes growth is an efficient technique to improve the interaction between implant and biological environment. Several studies indicate who low voltages anodizations are able to generate nanotubes ...