Results 71 to 80 of about 19,775 (311)
Advanced Functional Materials, EarlyView.Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller +6 more
wiley +1 more source
Solid-state circuit breakers in DC distribution networks
, 2020 The design and development of two direct current (DC) solid-state circuit breakers (SSCBs) for use in low voltage DC distribution systems were examined. Both SSCBs utilized the isolated-gate bipolar transistor (IGBT) and were developed for low current applications of under 20 A. The approach was documented to show the advancement of IGBT technology and
openaire +2 more sources
Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability [PDF]
, 2014 One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed.
Aboushady, A.A., Ahmed, K.H.
core +2 more sources
Conductance‐Dependent Photoresponse in a Dynamic SrTiO3 Memristor for Biorealistic Computing
Advanced Functional Materials, EarlyView.A nanoscale SrTiO3 memristor is shown to exhibit dynamic synaptic behavior through the interaction of local electrical and global optical signals. Its photoresponse depends quantitatively on the conductance state, which evolves and decays over tunable timescales, enabling ultralow‐power, biorealistic learning mechanisms for advanced in‐memory and ...
Christoph Weilenmann +8 more
wiley +1 more source
High‐Current Cryogenic DC Solid‐State Circuit Breaker for Electric Aircraft
IET Electric Power ApplicationsCryogenic and superconducting technologies have great potential to significantly enhance the power density and efficiency of electric propulsion aircraft.
Zhongying Wang +8 more
doaj +1 more source
Logic-controlled solid state switchgear for 270 volts dc [PDF]
A feasibility study to design and demonstrate solid state switchgear in the form of circuit breakers and a power transfer switch is described. The switchgear operates on a nominal 270 V dc circuit and controls power to a load of up to 15 amperes.
Buchanan, E. E., Jr. +2 more
core +1 more source
Mound Systems: Pressure Distribution of Wastewater: Design and Construction in Ohio [PDF]
, 1992 PDF pages ...
Gustafson, Robert, Mancl, Karen M.
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Advanced Functional Materials, EarlyView.In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda +11 more
wiley +1 more source
A Simple and Robust Solid-State Circuit Breaker for Low Voltage DC Applications
IEEE AccessThe demand for solid-state circuit breakers (SSCBs) in modern DC power systems is growing because of their fast switching speed, high efficiency, and reliable fault protection.
Rezoana Sharmin Riana +3 more
doaj +1 more source
Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance [PDF]
Current-limiting strategies for solid-state circuit breaker (SSCB) without adding impedance is introduced in this paper. With the current limitation of novel phase-shifting method, the advantages are simple hardware structure, relatively low cost, no ...
Castellazzi, Alberto +4 more
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