Results 111 to 120 of about 2,123,148 (253)
Results in EngineeringThis paper proposes a Hybrid Multi-Port DC Circuit Breaker (HMPDCCB) design that addresses the limitations of existing hybrid DC circuit breakers (HDCCBs), such as high cost, complexity, and slow response to high fault current and voltage demands.
Qumrish Arooj, Imtiaz Ahmad Taj
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A self‐powered photodetector using a static water–ZnO interface forms a Schottky‐like photovoltaic junction for ultra‐low‐light sensing. It delivers strong photoresponse, 360° detection, and flexibility, advancing transparent and sustainable water‐based optoelectronics.
Sanh Vo Thi +7 more
wiley +1 more source
Digital Rights Activism in Multilevel Governance
European Policy Analysis, EarlyView.ABSTRACT Multilevel governance (MLG) without a clear hierarchical structure can create power imbalances among various actors, particularly in settings with overlapping jurisdictions and policy areas. This dynamic is especially pronounced in Internet governance, which faces a complex interplay of domestic laws, state interdependence, and heightened ...
Alison Harcourt
wiley +1 more source
Hybrid Circuit Breaker Analysis for DC Applications
, 2018 The war of the currents started in the late 1880s and early 1890s between the main players being: the direct current (DC)–based Edison Electric Light Company and the alternating current (AC)–based Westinghouse Electric Company.
Ansaari, Ainee (author)
core
Interface Engineering of Boron Nitride–Polymer Composites for High Thermal Conductivity
Information &Functional Materials, EarlyView.This review comprehensively discusses the impacts of interfacial design and fabrication strategies on boron nitride–polymer composites, and systematically classifies and summarizes recent advances in interfacial engineering based on the interaction modes between boron nitride fillers and polymer matrices.
Zhao Chen +4 more
wiley +1 more source
Dual-circuit hybrid circuit breaker
, 2017 A DC fault will propagate quickly in a DC grid and results in significant DC voltage drop and large current increase. To protect the DC grid from the DC faults, the concept of hybrid HVDC circuit breaker (DCCB) is widely-accepted due to its low ...
Chuanyue Li +5 more
core +1 more source
Fast Hybrid Circuit Breaker for Medium-Voltage DC and AC Railway Power Supply Networks: A Simulation-Based Study [PDF]
International Journal of Railway ResearchThis paper investigates the performance of a medium-voltage hybrid circuit breaker designed for the protection of electrical power supply networks in railway transportation systems.
Ahmad Olyaei, Rozbeh Asad
doaj
A Novel Submodule Applied in HVDC Hybrid DC Breaker Topology
E3S Web of Conferences, 2018 In recent years, with the vigorous development of power electronic technology, renewable energy sources such as wind power and solar energy utilization efficiency continuing to improve, and the application scale expanding unceasingly, DC power grid ...
Junmin Wu +4 more
doaj +1 more source
InfoScience, EarlyView.With the advancement of 6G communications, high‐precision radar, and advanced imaging technologies, there is a growing demand for compact, high‐performance light sources capable of generating high‐frequency radio waves (millimeter‐wave and terahertz waves). This article systematically introduces how to efficiently generate these high‐frequency waves on
Jianfeng Xiong +8 more
wiley +1 more source
Improving DC Circuit Breaker Performance Through an Alternate Commutating Circuit
, 2018 Fault interruption in de circuits is more challenging than in their ac counterparts. The absence of natural current zero crossing along with resistive nature of the dc grids creates a significantly higher fault current to disrupt at the dc circuit ...
Sudipta Sen +5 more
core +1 more source