Results 31 to 40 of about 329,153 (310)

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

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

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
Wang, Zhuo   +4 more
openaire   +2 more sources

Analysis and Control of Low-Voltage Ride-Through Capability Improvement for PMSG Based on an NPC Converter Using an Interval Type-2 Fuzzy Logic System

open access: yesElektronika ir Elektrotechnika, 2019
Wind farms must be linked to the grid during the voltage sag. Therefore, the improvement of low-voltage ride-through (LVRT) capability of wind turbine (WT) is a vitally issue. Protection system based on an interval type-2 fuzzy logic system (IT-2 FLC) is
Altan Gencer
doaj   +1 more source

Experimental Modeling of Forward Recovery Characteristics of IGBT for DC Circuit Breaker

open access: yesZhongguo dianli, 2021
DC circuit breaker is the main means to clear the faults in VSC-HVDC power grid. Before action of the hybrid DC circuit breaker, the IGBT in the transfer branch is in a state of zero voltage and zero current.
Hong SHEN   +4 more
doaj   +1 more source

Increasing security of supply by the use of a local power controller during large system disturbances [PDF]

open access: yes, 2011
This paper describes intelligent ways in which distributed generation and local loads can be controlled during large system disturbances, using Local Power Controllers.
Bright, C. G.   +3 more
core   +1 more source

RANCANGAN RELAY PENGAMAN MOTOR INDUKSI BERBASIS FUZZYLOGIC [PDF]

open access: yes, 2011
: A protection relay for 3-phases induction motors hazard protection purpose has been designed utilizing of type A VR AT Mega 32 fuzzy: logic based micro-controller.
Harun, Nadjamuddin   +2 more
core  

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie   +4 more
wiley   +1 more source

Mine intrinsic safety power supply based on adjustable capacity and protection time

open access: yesMeikuang Anquan, 2021
In view of the contradiction between the capacity and impact resistance of mine intrinsically safe power supply, an intrinsically safe power supply with adjustable capacity and protection time, self-recovery and slow start function is designed.
ZOU Dedong, LIU Peng
doaj   +1 more source

Design of master and slave modules on battery management system for electric vehicles [PDF]

open access: yes, 2017
Nowadays, electric vehicle usage and the use of LiFePO4 batteries in electric vehicles gradually increase. However, there are important features to be considered to use these batteries safely and efficiently.
Demircali, A.   +6 more
core  

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