Results 41 to 50 of about 366,764 (206)
Submodule configuration of HVDC-DC auto transformer considering DC fault [PDF]
, 2016 This paper studies the submodule configuration of MMC based non-isolated HVDC-DC autotransformer (HVDC-AT) with DC fault blocking capability, including two-terminal and multi-terminal topologies.
Chi, Yongning +6 more
core +1 more source
A Hybrid Three-Level ZVZCS Converter for Photovoltaic Power Connecting to MVDC Collection System
Energies, 2022 Compared with the medium voltage ac (MVAC) collection system, the medium voltage dc (MVDC) one for renewable energy sources has many advantages. High-power dc/dc converters are one of the key stages of the MVDC collection system to boost the voltage ...
Xiaokun He, Renjie Hu, Wu Chen
doaj +1 more source
Optimal Traffic Splitting Policy in LTE-based Heterogeneous Network
, 2017 Dual Connectivity (DC) is a technique proposed to address the problem of increased handovers in heterogeneous networks. In DC, a foreground User Equipment (UE) with multiple transceivers has a possibility to connect to a Macro eNodeB (MeNB) and a Small ...
Karandikar, Abhay +2 more
core +1 more source
Mixed cells modular multilevel converter [PDF]
, 2014 This paper uses a scaled down version of the mixed cells modular multilevel converter (MMC) to discuss its modulation and capacitor voltage balancing method, and investigates its AC and DC fault ride-through capability.
Adam, G. P., Ahmed, K.H., Williams, B.W.
core +1 more source
Reliability Assessment of Conventional Isolated PWM DC-DC Converters
IEEE Access, 2021 This paper sets forth the reliability analysis of conventional isolated pulse width modulation DC-DC (IDC-DC) converters. The IDC-DC converters are categorized into isolated single-switch DC-DC (ISSDC-DC) or multiple-switch DC-DC (IMSDC-DC) converters ...
Hadi Tarzamni +6 more
doaj +1 more source
Reduced DC circuit breaker requirement on mixed converter HVDC networks [PDF]
, 2015 © 2015 IEEE.Recently proposed meshed HVDC networks include both converters and DC circuit breakers, and the fault currents experienced and therefore the capacity requirement of circuit breakers are dependent on the topology of converters used on the ...
Chaffey, G, Green, TC
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DC nanogrid for renewable sources with modular DC/DC LLC converter building block
IET Power Electronics, 2017 Centralised electricity systems are being integrated by a multitude of small distributed generation clusters, called nanogrids, capable of ensuring full utilisation of renewable energy sources, high flexibility, efficiency and improved reliability of the power grid due to redudancy. In this study, small photovoltaic plants combined
Cecati, Carlo +4 more
openaire +2 more sources
Chemical observations of a polar vortex intrusion [PDF]
, 2006 An intrusion of vortex edge air into the interior of the Arctic polar vortex was observed on the 31 January 2005 flight of the NASA DC-8 aircraft. This intrusion was identified as anomalously high values of ozone by Airborne Raman Ozone, Temperature, and
A. R. Douglass +46 more
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Microwave switching power divider [PDF]
, 1981 A pair of parallel, spaced-apart circular ground planes define a microwave cavity with multi-port microwave power distributing switching circuitry formed on opposite sides of a thin circular dielectric substrate disposed between the ground planes.
Johnson, R. W., Stockton, R. J.
core +1 more source
Zero-temperature spin-glass freezing in self-organized arrays of Co nanoparticles [PDF]
, 2010 We study, by means of magnetic susceptibility and magnetic aging experiments, the nature of the glassy magnetic dynamics in arrays of Co nanoparticles, self-organized in N layers from N=1 (two-dimensional limit) up to N=20 (three-dimensional limit).
C. Deranlot +9 more
core +3 more sources