Results 81 to 90 of about 37,424 (285)

Active distribution power system with multi-terminal DC links [PDF]

open access: yes, 2015
A fast power restoration operational scheme and relevant stabilizing control is proposed for active distribution power systems with multi-terminal DC network in replacement of the conventional normal open switches. A 9-feeder benchmark distribution power
Chen, Dong, Xu, Lie, Zhang, Wendian
core   +2 more sources

Parents' WhatsApp coping resources in the context of ongoing political conflicts: An ecological exploration

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Mobile technologies have become significant resources for crisis communication and social support in recent years. However, despite empirical evidence pointing to the centrality of these technologies for parenthood in everyday life, it is yet unknown how parents' coping resources play a role in the digital environment.
Daphna Yeshua‐Katz   +2 more
wiley   +1 more source

Low Voltage Ride Through Enhancement Based on Improved Direct Power Control of DFIG under Unbalanced and Harmonically Distorted Grid Voltage [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2016
In the conventional structure of the wind turbines along with the doubly-fed induction generator (DFIG), the stator is directly connected to the power grid.
Ahmadreza Nafar   +3 more
doaj  

Heat measurement at various parts of three phase induction motor at low speed using Z-source filter [PDF]

open access: yes, 2013
The stator temperature of the three phase induction motor with Z-source inverter drive is experimentally studied in this paper along with the comparison of the stator temperature of three phase induction motor with PWM drive. Z-source inverter employs an
Manjesh, M., Rajesh, B.
core   +1 more source

Neighborhood social environments and mental health among youth and adults in public housing

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Neighborhoods influence health in part through social processes. However, little is known about how multiple neighborhood social processes co‐occur, or about within (vs. between) neighborhood variation in social processes and health. This study asked how residents of a large public housing development describe their neighborhood and used ...
Jane Leer   +3 more
wiley   +1 more source

Fault ride-through coordinated control strategy for offshore wind power via flexible low-frequency transmission system

open access: yes电力工程技术
The offshore wind power via flexible low-frequency transmission (FLFT) system based on the modular multilevel matrix converter (M3C) faces power surplus and stability risks following faults on the power frequency grid side.
Nianwen XIANG   +5 more
doaj   +1 more source

Comparison between two VSC-HVDC transmission systems technologies : modular and neutral point clamped multilevel converter [PDF]

open access: yes, 2009
The paper presents a detail comparison between two voltage source converter high voltage dc transmission systems, the first is based on neutral point-clamped (also known as HVDC-Light) and the second is based on innovative modular multilevel converter ...
Adam, G.P.   +5 more
core  

3-Phase 4-wire matrix converter-based voltage sag/ swell generator to test low-voltage ride through in wind energy conversion systems [PDF]

open access: yes, 2014
The high penetration of energy from wind energy conversion systems (WECSs) can have a significant influence on the stability, power quality and reliability of power systems.
Cardenas R.   +7 more
core   +2 more sources

Understanding Youth Assaults of Police Officers in Australia: A Power Threat Meaning Framework Analysis

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT This study explores youth violence towards police officers in Australia through the Power Threat Meaning Framework (PTMF) to better understand the underlying factors contributing to such violence; focusing on power dynamics, childhood adversity, and trauma.
Dimitra Lattas   +4 more
wiley   +1 more source

Fault Ride-Through Control Strategy for Variable Speed Pumped Storage Unit with Full-Size Converter

open access: yesApplied Sciences
Fault ride-through is a prerequisite for ensuring continuous operation of a variable-speed pumped storage unit with a full-size converter (FSC-VSPU) and providing support for the renewable energy and power grid.
Huabo Shi   +7 more
doaj   +1 more source

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