Results 91 to 100 of about 5,536,000 (158)

Spatiotemporal engineering of dynamic color in alternating‐current‐driven light‐emitting devices

open access: yesFlexMat, EarlyView.
This review presents a mechanism‐driven framework for spectral tuning in alternating‐current‐driven light‐emitting devices, systematically integrating emissive center engineering, device architecture design, and driving signal modulation. By linking microscopic carrier dynamics and electric‐field‐charge interactions with macroscopic spectral evolution,
Yuyue Yang   +3 more
wiley   +1 more source

Seven-level inverter with switched capacitors

open access: yesThe Journal of Engineering, 2019
The seven-level (7L) inverter with a nearly sinusoidal output voltage is suitable for renewable energy conversion applications. A novel 7L inverter topology with switched capacitors is proposed here.
Xuezhi Wu   +5 more
doaj   +1 more source

A Cross‐Species Hormone Knowledge Base With Multi‐Dimensional Data Integration and Intelligent Query Assistance

open access: yesiMetaMed, EarlyView.
AHormoneDB is a no‐code platform that combines DOID‐standardized hormone–disease associations, regulatory prediction, and retrieval‐augmented generation‐based querying. In acromegaly, it nominated PTPN1 as a previously underappreciated candidate, demonstrating its capacity to accelerate mechanistic discovery.
Xingxing Huang   +6 more
wiley   +1 more source

Extended Operation Testing of Stirling Convertors in Support of Stirling Radioisotope Power System Development [PDF]

open access: yes, 2008
100 We class Stirling convertors began extended operation testing at NASA Glenn Research Center (GRC) in 2003 with a pair of Technology Demonstration Convertors (TDCs) operating in air.
Wilson, Scott D.   +6 more
core  

900 V GaN-based sine-wave inverters for three-phase industrial applications

open access: yesThe Journal of Engineering, 2019
GaN devices are gradually getting attention within the industry along with SiC as a potential wide bandgap device. At present, there are almost no high-voltage GaN devices with voltage >650 V, which makes an inverter design difficult for a three-phase ...
Nilanjan Mukherjee   +3 more
doaj   +1 more source

A Physics‐Informed Koopman Operator Framework for Decentralized Discrete‐Time Sequential Control of a Modular Aerial Parcel Delivery Robot

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This paper presents a Physics‐Informed Koopman Operator (PIKO) framework integrated with a discrete‐time Sequential Action Control (SAC) for real‐time, decentralized control of a modular aerial parcel delivery robot composed of multiple independently actuated propeller modules.
Archit Krishna Kamath   +2 more
wiley   +1 more source

Simplified double switching SVPWM implementation for three-level VSI

open access: yesThe Journal of Engineering, 2019
A generalised space vector pulse width modulation (SVPWM) framework for the realisation of all double switching states with a memory-optimised method is proposed to reduce the total harmonic distortion (THD) and to provide neutral point voltage balancing
Gopinathan Vivek   +3 more
doaj   +1 more source

Real‐Time Fractional Control of an Electrohydraulic System Using Low‐Cost Technology

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Advances in control methods for electrohydraulic systems (EHS) improve performance by addressing nonlinearities and unknown parameters, although most studies are limited to numerical simulations. Furthermore, research with experimental validation often relies on high‐performance computing equipment, specialized data acquisition cards, and ...
Edgar H. Robles‐Sauceda   +5 more
wiley   +1 more source

A new three‐level simplified sparce NPC topology for UHS PMSM motor applications

open access: yesIET Electric Power Applications
In ultra‐high speed (UHS) motor applications, full SIC two‐level (2L) inverters with high switching frequencies are generally used due to their lower cost.
Aleksandr Sheianov, Xi Xiao, Xudong Sun
doaj   +1 more source

Design of a 100 kHz wide bandgap inverter for motor applications with active damped sine wave filter

open access: yesThe Journal of Engineering, 2019
In this study, a three-phase motor inverter with sinusoidal output voltages based on the application of gallium nitride transistors and advanced control is analysed.
Franz Maislinger   +4 more
doaj   +1 more source

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