Results 11 to 20 of about 915,622 (300)

New Smart Sensor for Voltage Unbalance Measurements in Electrical Power Systems

open access: yesSensors, 2022
This paper deals with voltage unbalances and how they can be quantified according to the standards. Firstly, a comparison between the different unbalance voltage factors is conducted in order to remark on their divergences.
Santiago Bogarra   +2 more
doaj   +1 more source

Suitability of Voltage Sensors for the Measurement of Switching Voltage Waveforms in Power Semiconductors

open access: yesIEEE Open Journal of Power Electronics, 2022
This paper investigates the effect of voltage sensors on the measurement of transient voltages for power semiconductors in a Double Pulse Test (DPT) environment.
Sebastian Sprunck   +3 more
doaj   +1 more source

Reducing AC impedance measurement errors caused by the DC voltage dependence of broadband high-voltage bias-tees [PDF]

open access: yes, 2007
During the AC impedance characterization of devices, from the kHz-range up to the GHz-range, accuracy can be lost when a DC voltage is applied. Commercial high-voltage broadband bias-tees are often voltage-dependent, which can cause inaccuracies at low ...
Reimann, K.   +2 more
core   +2 more sources

A Development of a Capacitive Voltage Divider for High Voltage Measurement as Part of a Combined Current and Voltage Sensor

open access: yesElektronika ir Elektrotechnika, 2020
This article deals with the development of capacitive voltage divider for high voltage measurements and presents a method of analysis and optimization of its parameters.
Roman Hrbac   +5 more
doaj   +1 more source

Fast RF-CV characterization through high-speed 1-port S-parameter measurements [PDF]

open access: yes, 2010
We present a novel method to measure the capacitance-voltage relation of an electronic device. The approach is accurate, very fast, and cost-effective compared to the existing off-the-shelf solutions.
Herfst, R.W.   +4 more
core   +3 more sources

Comparative high voltage impulse measurement

open access: yesJournal of Research of the National Institute of Standards and Technology, 1996
A facility has been developed for the determination of the ratio of pulse high voltage dividers over the range from 10 kV to 300 kV using comparative techniques with Kerr electro-optic voltage measurement systems and reference resistive voltage dividers. Pulse voltage ratios of test dividers can be determined with relative expanded uncertainties of 0.4
FitzPatrick, Gerald J.   +1 more
openaire   +2 more sources

A Design of PWM Controlled Calibrator of Non-Sinusoidal Voltage Waveforms

open access: yesEnergies, 2019
Power quality conditions in electrical power networks have drastically changed in recent years. A number of electrical devices and power generators that are the main sources of disturbances is ever increasing.
Goran Petrovic   +3 more
doaj   +1 more source

Electrostatic force spectroscopy of near-surface localized states [PDF]

open access: yes, 2004
Electrostatic force microscopy at cryogenic temperatures is used to probe the electrostatic interaction of a conductive atomic force microscopy tip and electronic charges trapped in localized states in an insulating layer on a semiconductor.
Dana, Aykutlu, Yamamoto, Yoshihisa
core   +2 more sources

A subsystem‐based fault location method in distribution grids by sparse measurement

open access: yesIET Generation, Transmission & Distribution, 2023
With the development of smart meters and other intelligent electronic devices, more and more data‐driven fault location methods based on wide area measurement are emerging.
Xiaodong Lv   +5 more
doaj   +1 more source

A Novel Feature Extraction and Fault Detection Technique for the Intelligent Fault Identification of Water Pump Bearings

open access: yesSensors, 2021
The reliable and cost-effective condition monitoring of the bearings installed in water pumps is a real challenge in the industry. This paper presents a novel strong feature selection and extraction algorithm (SFSEA) to extract fault-related features ...
Muhammad Irfan   +8 more
doaj   +1 more source

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