Results 21 to 30 of about 3,613 (51)

2‐D analytical magnetic model for optimal design of an outer rotor permanent magnet synchronous machine

open access: yesIET Electric Power Applications, 2023
The objective of this paper is to investigate the optimal design of a 120 W outer‐rotor permanent magnet synchronous machine for air‐conditioning applications to reduce the electricity consumption and machine costs. To this end, a 2‐D analytical magnetic
Amir Abbas Vahaj   +6 more
doaj   +1 more source

Electric field characteristics investigation and electrical tree propagation of distributed network cable joint with defects

open access: yes电力工程技术, 2023
Most serious breakdown faults of cross linked polyethylene(XLPE) cables in distribution network occur at cable joints, which are mainly caused by process defects in the manufacturing and installation of cable joints.
HE Jiahong, HE Kang, DONG Bowen
doaj   +1 more source

ДОВГОТРИВАЛА ЕЛЕКТРИЧНА МІЦНІСТЬ ПОЛІМЕРНИХ ПЛІВОК ПІД ДІЄЮ ЕЛЕКТРИЧНОГО ПОЛЯ

open access: yesElektrotehnìka ta Elektroenergetika, 2017
Мета роботи – вивчення довговічності полімерних плівок в усталеному електричному полі постійного струму, визначення характеру процесу електричного руйнування полімерних плівок за умов заглушення часткових розрядів.
A. P. Malyushevska   +2 more
doaj   +1 more source

Performance analysis and optimization of permanent magnet flux switched linear motor for ropeless elevator

open access: yesIET Electric Power Applications, 2023
Permanent magnet linear synchronous motor (PMLSM) is one of the ideal driving sources of ropeless elevators. However, such motors, whether moving magnetic or moving coil, will produce the problem of excessive cost under long travel.
Xiaozhuo Xu   +4 more
doaj   +1 more source

Simulation research on arc extinguishing characteristics of 35kV self-detaching lightning protection device based on magnetohydrodynamics

open access: yes电力工程技术, 2023
To explore the factors affecting the arc extinction performance of the self-disengaging lightning protection device, a numerical simulation model of arc extinction process of the device based on magneto-hydrodynamic theory is established in this paper ...
XIE Congzhen   +5 more
doaj   +1 more source

Infrared feature recognition and temperature extraction method of GIS components based on improved YOLOv4

open access: yes电力工程技术, 2023
Target recognition and temperature extraction of the typical component of gas insulated switchgear (GIS) are the key to realizing the infrared intelligent detection of equipment heating state.
LIU Jiang   +3 more
doaj   +1 more source

Research of static and dynamic characteristics of a voltage converter with soft switching running on arc load

open access: yesElektrotehnìka ta Elektroenergetika, 2019
Purpose. The purpose of the work is to ensure the improvement of the regulation quality of pulsed energy converters with simultaneous exclusion of undesirable dynamic modes from its dynamics.
E.N. Vereschago, V.I. Kostyuchenko
doaj   +1 more source

Auxiliary frequency regulation control strategy for electric vehicles considering users' charging plans

open access: yes电力工程技术, 2023
Electric vehicles (EVs) can be used as energy storage devices to provide auxiliary frequency regulation service. However, the lack of inertia and damping caused by vehicle-to-grid (V2G) technology will affect the grid's stability. In addition, the users'
PEI Zhenkun, WANG Xuemei, KANG Longyun
doaj   +1 more source

Live zero value detection technology of insulator string based on UAV

open access: yes电力工程技术, 2023
In order to improve the detection efficiency of zero value insulator of transmission line, the unmanned aerial vehicles (UAV) equipped with an electric field detection device can realize live detection without climbing the tower.
ZHANG Dongdong   +5 more
doaj   +1 more source

A novel modulation method for flexible multi-state switches with shared modules

open access: yes电力工程技术, 2023
As a new type of power electronic device to replace traditional mechanical switches, the soft open point (SOP) has the advantages of fast response speed and controllable power flow.
LI Zheng   +3 more
doaj   +1 more source

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