Results 21 to 30 of about 791,486 (291)

Received signal strength indication-based localisation method with unknown path-loss exponent for HVDC electric field measurement

open access: yesHigh Voltage, 2017
The electric field environment under high-voltage direct current (HVDC) transmission lines is an important design consideration. In the wireless sensor networks for electric field measurement system under the HVDC transmission lines, it is necessary to ...
Xiaolan Gu   +6 more
doaj   +1 more source

Estimation of de-trapped charge for diagnosis of transformer insulation using short-duration polarisation current employing detrended fluctuation analysis

open access: yesHigh Voltage, 2020
Researchers have shown that the value of charge carriers, de-trapped from the oil–paper interface of power transformer insulation, is useful in carrying out the diagnosis.
Saurabh Dutta   +4 more
doaj   +1 more source

Observation of the Little-Parks Oscillations in a System of Asymmetric Superconducting Rings [PDF]

open access: yes, 2007
Little-Parks oscillations are observed in a system of 110 series-connected aluminum rings 2000 nm in diameter with the use of measuring currents from 10 nA to 1000 nA.
Burlakov, A. A.   +4 more
core   +1 more source

Machine-learning ready data on the thermal power consumption of the Mars Express Spacecraft

open access: yesScientific Data, 2022
Measurement(s) electric current Technology Type(s) current readings in spacecraft housekeeping telemetry Sample Characteristic - Environment outer ...
Matej Petković   +15 more
doaj   +1 more source

Analisis Sensor Arus Invasive ACS712 dan Sensor Arus Non Invasive SCT013 Berbasis Arduino

open access: yesProtek: Jurnal Ilmiah Teknik Elektro, 2021
The electric load measurement system is a device designed to measure and monitor electricity consumption. In this research, the comparison process of reading the electric current uses the Non-Invasive current sensor model SCT013 and the Invasive current ...
wayan arsa suteja, adi surya antara
doaj   +1 more source

PWM-based Flux linkage estimation for permanent magnet synchronous machines

open access: yesThe Journal of Engineering, 2019
Monitoring of rotor temperature in permanent magnet synchronous machines (PMSM) is of great importance as high temperature could cause partial or even irreversible demagnetisation of the permanent magnets (PMs).
Shuai Xiao, Antonio Griffo
doaj   +1 more source

Structural optimization and simulation of piezoelectric- piezoresistive coupled MEMS steady-state electric field sensor

open access: yesFrontiers in Energy Research, 2023
: In view of the problems of large volume, high energy consumption and difficult maintenance of electric field measurement sensors in existing power systems, non-contact miniature electric field sensors have become a hot topic in current research.
Guote Liu   +5 more
doaj   +1 more source

Detection of humidity ingress using online common-mode insulation impedance-monitoring system

open access: yesThe Journal of Engineering, 2019
Enhanced machine reliability through monitoring of its state of health is an emerging field of research. Ingress of contaminants such as moisture can effect electrical machine state of health and contribute to failure in winding insulation.
Igor Tsyokhla   +3 more
doaj   +1 more source

Study on the ratio change measurement of 1000 kV HVDC divider based on improved DC voltage summation method

open access: yesHigh Voltage, 2019
Determining the voltage ratio change is one of the core issues in the traceability of the DC voltage divider. Basing on the previous research results, this study proposes an improved DC voltage summation method to evaluate the voltage division ratio ...
Dengyun Li   +5 more
doaj   +1 more source

Double detected spin-dependent quantum dot

open access: yes, 2012
We study the dynamics of a spin-dependent quantum dot system, where an unsharp and a sharp detection scenario is introduced. The back-action of the unsharp detection related to the magnetization, proposed in terms of the continuous quantum measurement ...
Averin   +45 more
core   +1 more source

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