Results 21 to 30 of about 326,663 (289)

Dynamic Response Enhancement and Fault Protection of Boost Converter-Fed Brushless DC Motor in Aerospace Applications

open access: yesApplied Sciences, 2019
The permanent magnet (PM) brushless DC (BLDC) machine has been widely used in various applications due to its high reliability and simplicity. In aerospace applications, the requirements of its dynamic acceleration characteristic and fault protection ...
Wei Wang, Jingwen Wang
doaj   +1 more source

Voltage distribution of a wind turbine transformer under direct lightning strike: effects of the grounding of cable shield [PDF]

open access: yes, 2016
In this paper we consider wind energy generators as tall structures, thus the reflections of the current of a direct lightning strike, at various interfaces, have been included in the computational model.
Ahmed, Rebaz Jamal   +3 more
core   +1 more source

Design of a new type of integrated test bench for mine-used high-voltage protector

open access: yesGong-kuang zidonghua, 2016
A new type of integrated test bench for mine-used high-voltage protector was designed. The overall structure and design schemes of software and hardware of the test bench were introduced.
HUANG Hesong   +3 more
doaj   +1 more source

Analysis and RTDS Simulation on Suppression Methods for TV Fuses Frequently Blown

open access: yesZhongguo dianli, 2020
Potential transformer (TV) is an important equipment for measurement and protection in distribution network. The high voltage side of TV is usually equipped with fuse for protection, but abnormal fuse blown often occurs, affecting the safety of power ...
Yuan GUI   +5 more
doaj   +1 more source

Over-Voltage Protection for Pico-Hydro Generation Using PV Microinverters

open access: yes, 2020
Innovative, low-cost, environmentally friendly and renewable resource-based solutions are emerging to meet growing global energy demand. Hydroelectric technology is quite old and mature. Despite its importance, it is associated with large plants, with environmental impact. On contrary, small-scale systems, called pico-hydro systems (up to 5 kW) are not
Isabella Cristina Scotta   +3 more
openaire   +2 more sources

Research on Lightning Over-Voltage Protection for 500kV GIS Substation [PDF]

open access: yes2009 Asia-Pacific Power and Energy Engineering Conference, 2009
This paper combines incoming lines with 500 kV GIS substation, considering the influence of the impulse voltage-second characteristics of insulator strings, the impulse corona of incoming lines, the impulse grounding resistance of tower and the position of lightning. ATP-EMTP simulation program is applied to analyze the lightning over-voltage of 500 kV
Zhuo Wang   +4 more
openaire   +1 more source

Probability risk assessment of island operation event for large scale photovoltaic plant

open access: yesAutomatika, 2019
Original methodology for the calculation of island operation event occurrence possibility is proposed for the photovoltaic power plants connected to medium voltage grid.
Mihovil Ivas   +3 more
doaj   +1 more source

Temperature characterisation of an optically-interrogated Rogowski coil [PDF]

open access: yes, 2014
An investigation into the performance of an optically-interrogated Rogowski coil over temperatures up to 80 °C is presented. Preliminary thermal tests reveal that the sensor response is temperature-dependent and the measurement errors are increased at ...
Fusiek, Grzegorz   +2 more
core   +1 more source

Effects of energy storage systems grid code requirements on interface protection performances in low voltage networks [PDF]

open access: yes, 2017
The ever-growing penetration of local generation in distribution networks and the large diffusion of energy storage systems (ESSs) foreseen in the near future are bound to affect the effectiveness of interface protection systems (IPSs), with negative ...
Bignucolo, Fabio   +4 more
core   +2 more sources

Small-Area Radiofrequency-Energy-Harvesting Integrated Circuits for Powering Wireless Sensor Networks

open access: yesSensors, 2019
This study presents a radiofrequency (RF)-energy-harvesting integrated circuit (IC) for powering wireless sensor networks with a wireless transmitter with an industrial, scientific, and medical (ISM) of 915 MHz.
Guo-Ming Sung   +3 more
doaj   +1 more source

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