Results 11 to 20 of about 21,403,318 (290)

Investigation of impact of DC component on breakdown characteristics for different electric fields under composite AC & DC voltage

High Voltage, 2022
The valve side of the converter in the high‐voltage direct current is subjected to mixed voltages such as composite AC & DC voltage. In this study, the effects of the homogeneity of electric field on breakdown voltage were investigated for different ±DC ...
Mehmet Murat Ispirli, Özcan Kalenderli, Florian Seifert, Michael Rock, Bülent Oral   +4 more
doaj   +2 more sources

Combined effect of electric field and surface modification on pool boiling of R-123 [PDF]

, 2012
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The effect of surface modification and high intensity electric field (uniform and non – uniform) acting separately or in combination on pool boiling of R ...
Ahmad, Syed Waqas
core   +8 more sources

Study on the Electric Field Distribution Characteristics of 66 kV Dry-Type Transformer Based on Functional Graded Material (FGM) Treatment

Energies
Functional graded materials (FGMs) have been successfully applied for improving the insulation performance of insulators, yet there is currently no relevant literature on their application in dry-type transformers.
Xinhan Qiao, Zishang Zhu, Yuchang Zhang, Le Yu, Dongdong Zhang, Jianwen Zhang, Xinxi Di, Yijiao Wang, Wengtian Zeng   +8 more
doaj   +2 more sources

Intrinsic, multiplexable sensors for electric field strength using structural slow light in phase-shifted fibre Bragg gratings [PDF]

, 2012
In this paper we demonstrate through simulation the potential for phase-shifted fibre Bragg gratings incorporating structural slow light to enable intrinsic reflection-mode point sensors for electric field or voltage.
Philip Orr, Niewczas, Pawel, Paweł Niewczas, Orr, Philip   +3 more
core   +4 more sources

Development of a Wideband Precision Electric Field Measuring Sensor

Sensors, 2023
High-voltage electric field measurement technology has certain applications in electric field measurement of power systems, but due to the limitation of its measurement accuracy and bandwidth, it cannot be used for the measurement of lightning-impulse ...
Zhaozhi Long, Feng Zhou, Fuchang Lin, Jiawei Fan, Wenting Li, Yinglong Diao, Kangmin Hu   +6 more
doaj   +1 more source

Transient electric field of the combined insulation structure under positive periodic square waveform voltage: Analytical analysis and application

High Voltage, 2022
The working voltage of the high‐voltage high‐power electronic devices is the positive periodic square waveform (PPSW) voltage, which is much different from the conventional AC or DC voltage.
Teng Wen, Xiang Cui, Xuebao Li, Sijia Liu, Zhibin Zhao   +4 more
doaj   +1 more source

Non-Intrusive Voltage-Inversion Measurement Method for Overhead Transmission Lines Based on Near-End Electric-Field Integration

Energies, 2023
Existing electric-field integral inversion methods have limited field application conditions, and they are difficult to arrange electric-field measurement points on high-span overhead lines.
Wei Liao, Qing Yang, Kun Ke, Zhenhui Qiu, Yuqing Lei, Fei Jiao   +5 more
doaj   +1 more source

Electric field induced degradation of high-voltage PTCR ceramics

Open Ceramics, 2022
This study investigates the degradation of the PTCR material BaTiO3 in high DC voltage, as it is important for the application as heater in electric cars. Impedance spectroscopy was used to gain information on the degradation.
Julian N. Ebert, Wolfgang Rheinheimer
doaj   +1 more source

EFFECT OF ALUMINUM FOILS NUMBER AND ITS LENGTH IN IMPROVEMENT OF ELECTRIC FIELD DISTRIBUTION OF HIGH VOLTAGE CONDENSER BUSHING

Journal of Engineering and Sustainable Development, 2021
High voltage condenser bushing is one of the important component that is widely used in the high voltage system. At high voltage levels more than 52kV the distribution of electric field in condenser bushing is irregular between the lead conductor and ...
Zahraa G. Mustafa, Kassim R. Hameed
doaj   +3 more sources

Electric and magnetic fields of the high voltage autotransformer

Elektronika ir Elektrotechnika, 2010
Elektros energetikos sistemoje aukštosios įtampos galios autotransformatorius yra vienas iš galingiausių elektrinio ir magnetinio laukų kūrimo šaltinių. Autotransformatorius ir jį supanti aplinka aprašyti baigtinių elementų metodu. Magnetinio ir elektrinio lauko skaičiavimais nustatyta, kad magnetinio lauko stiprio vertės arti autotransformatoriaus ...
Deltuva, R., Virbalis, J.A., Gečys, S., Kauno technologijos universitetas   +3 more
openaire   +3 more sources