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Reliability modeling and assessment of isolated microgrid considering influences of frequency control
(2019)Frequency control of isolated microgrid (MG) relies heavily on a safe and reliable cyber system. Random failures of cyber elements may cause the malfunction of the frequency control, resulting in reliability issues, e.g., ... -
Stable biexcitons in two-dimensional metal-halide perovskites with strong dynamic lattice disorder
(2018)With strongly bound and stable excitons at room temperature, single-layer, two-dimensional organic-inorganic hybrid perovskites are viable semiconductors for light-emitting quantum optoelectronics applications. In such a ... -
A coupled, semi-numerical model for thermal analysis of medium frequency transformer
(2019-01)Medium-frequency (MF) transformer has gained much popularity in power conversion systems. Temperature control is a paramount concern, as the unexpected high temperature declines the safety and life expectancy of transformer. ... -
Enhanced ferromagnetism of ZnO@Co/Ni hybrid core@shell nanowires grown by electrochemical deposition method
(2018)The hybrid structure of ZnO NWs with the presence of different dopants recently has drawn many interests from researchers due to the possibility to integrate multiple functionalities into one single structure. In this ... -
Optimal segmented rotor design for the embedded electrical machine for the more electric aircraft
(2019)This study presents the design and analysis of the segmented rotor design for an electrical machine embedded onto the more electric aircraft gas turbine engine shaft. The high-speed operational environment imposes high ... -
Effect of NiO substitution on the structural and dielectric behaviour of NaNbO3
(2018)The structural and dielectric properties of NiO substituted NaNbO3 ceramics are reported. The orthorhombic (Pmna) crystal structure of NaNbO3 transforms to a lower symmetry monoclinic phase (Pbma) after the dilute dispersion ... -
Completely solvent-free protocols to access phase-pure, metastable metal halide perovskites and functional photodetectors from the precursor salts
(2019)Mechanochemistry is a green, solid-state, re-emerging synthetic technique that can rapidly form complex molecules and materials without exogenous heat or solvent(s). Herein, we report the application of solvent-free ... -
Emerging thermal-responsive materials and integrated techniques targeting the energy-efficient smart window application
(2018)Architectural windows that smartly regulate indoor solar radiation by changing their optical transmittance in response to thermostimuli are developed as a promising solution toward reducing the energy consumption of ... -
Electrical performance and stability of tungsten indium zinc oxide thin-film transistors
(2018)Amorphous tungsten indium zinc oxide thin film transistors (WIZO TFTs) have been prepared using radio-frequency (RF) magnetron co-sputtering system to co-sputter indium zinc oxide (IZO) and indium tungsten oxide (IWO) ... -
A state-space thermal model incorporating humidity and thermal comfort for model predictive control in buildings
(2018)A major challenge in applying Model Predictive Control (MPC) to building automation and control (BAC) is the development of a simplified mathematical model of the building for real-time control with fast response times. ... -
High jump of impinged droplets before Leidenfrost state
(2019)Unlike the traditionally reported Leidenfrost droplet which only floats on a thin film of vapor, we observe a prominent jump of the impinged droplets in the transition from the contact boiling to the Leidenfrost state. The ... -
Solid oxide cell and stack testing, safety and quality assurance (SOCTESQA)
(2015)In the EU-funded project “SOCTESQA”, partners from Europe and Singapore are working together to develop uniform and industry wide test procedures and protocols for solid oxide cells and stacks (SOC) cell/stack assembly. ... -
Effect of Sr surface segregation of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 − δ electrode on its electrochemical performance in SOC
(2015)The degradation mechanism of La0.6Sr0.4Co0.2Fe0.8O3 − δ (LSCF) electrode is investigated by examining its electrochemical behavior under equilibrium potential at elevated temperature and corresponding surface compositional ... -
A battery/ultracapacitor hybrid energy storage system for implementing the power management of virtual synchronous generators
(2017)Renewable energy sources (RESs) have been extensively integrated into modern power systems to meet the increasing worldwide energy demand as well as reduce greenhouse gas emission. As a result, the task of frequency ... -
Mesoporous SiO2/BiVO4/CuOx nanospheres for Z-scheme, visible light aerobic C–N coupling and dehydrogenation
(2019)In light of the growing demand to use renewable energy, we have synthesized a mesoporous bismuth vanadate-copper oxide-silica photocatalyst (SiO2/BiVO4/CuOx) to act as a chromophore in a Z-scheme system. These photocatalysts ... -
Low threshold and efficient multiple exciton generation in halide perovskite nanocrystals
(2018)Multiple exciton generation (MEG) or carrier multiplication, a process that spawns two or more electron–hole pairs from an absorbed high-energy photon (larger than two times bandgap energy Eg), is a promising way to augment ... -
Ultrafast THz photophysics of solvent engineered triple-cation halide perovskites
(2018)Solution processed thin film organic-inorganic perovskites are key to the large scale manufacturing of next generation wafer scale solar cell devices. The high efficiency of the hybrid perovskite solar cells is derived ... -
Distributed hierarchical control of AC microgrid operating in grid-connected, islanded and their transition modes
(2018)In this paper, a distributed hierarchical control is proposed for ac microgrid, which could apply to both grid-connected (GC) mode and islanded (IS) mode as well as mode transitions. The control includes three control ... -
Investigation of selenization and various CBD CdS deposition conditions to fabricate high performing spray pyrolysis synthesized Cu(In,Ga)(S,Se) 2 solar cells
(2017)Semiconducting thin-films of CIGS were deposited by spray pyrolysis of aqueous precursor solutions. The as-sprayed thin films were then selenized at different temperatures and durations to obtain the optimized selenization ... -
Multi-energy scheduling using a hybrid systems approach
(2018)This paper presents a mixed logical dynamical (MLD) approach for modelling a multi-energy system. The electrical and thermal energy streams are linked through the operation of combined cycle power plants (CCPPs). The MLD ...
