Results 11 to 20 of about 10,125,610 (244)
Understanding key concepts of electric circuits: Students' use of mental models [PDF]
, 2012 This study presents an action research project on the teaching and learning of fundamental ideas about electric circuits, gathering data from two cohorts.
Borg Marks, Joan
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Electrooptic electric field sensor for dc and extra-low-frequency measurement [PDF]
, 1998 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis reports the results of the research carried out towards the development of an electrooptic sensor for DC and extra low frequency electric field ...
Bordovsky, Michael
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IET Power Electronics, 2021 To facilitate the application of various renewable generations as well as diversified loads, hybrid DC/AC microgrids have aroused widespread interest; however, direct access of different types of sources and loads to the utility through multiple ...
Yue Li, Yonggang Peng, Xiaoming Wang
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High 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
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Journal of Harbin University of Science and Technology, 2022 In order to better explore the measurement performance of field service electricity energy meters under multi-dimensional influence conditions, and infer measurement error under standard laboratory conditions, a measurement error estimation method of ...
DAI Yan-jie +6 more
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Contactless measurement of electric current using magnetic sensors [PDF]
, 2019 We review recent advances in magnetic sensors for DC/AC current transducers, especially novel AMR sensors and integrated fluxgates, and we make critical comparison of their properties.
Ripka P.
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PWM-based Flux linkage estimation for permanent magnet synchronous machines
The 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
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Nonintrusive overhead‐line current detection using a vertical magnetic‐field sensor array
IET Generation, Transmission & Distribution, 2023 With the growing infrastructure for overhead lines, the demand for overhead‐line condition‐monitoring technologies has become increasingly urgent. Traditional current transformers used to measure three‐phase currents are bulky and difficult to install ...
Kun‐Long Chen +2 more
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Detection of humidity ingress using online common-mode insulation impedance-monitoring system
The 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
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High 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
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