Results 91 to 100 of about 4,324,670 (291)

A Miniaturized Autonomous Thermomagnetic Generator

open access: yesAdvanced Functional Materials, EarlyView.
Micro, autonomous and high power thermomagnetic generator operating between a heat dissipator and a processor. ABSTRACT Thermomagnetic generators (TMG) are promising devices for converting low‐grade waste heat into electricity. Self‐actuation using permanent magnets is the key to autonomy.
Morgan Almanza   +11 more
wiley   +1 more source

Fault Tolerant Permanent Magnet Drives: Operating Under Open-circuit and Short-circuit Switch Faults [PDF]

open access: yes, 2014
A series architecture providing a fault tolerant drive is proposed. The architecture includes one or two DC sources, two voltage source inverters and a PMSM.
Pierfederici, Serge   +3 more
core   +2 more sources

Gate Voltage Comparating Scheme for Short-Circuit Fault Detection of IGBT

open access: yes, 2010
This paper represents a novel short-circuit detecting scheme comparating the gate voltage of IGBT. The proposed scheme is operated to protect IGBT under short-circuit faults such as fault under load(FUL) and hard switch-fault(HSF).
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core  

Short circuit studies in transmission networks using improved fault model

open access: yes, 2007
Accuracy of short circuit analysis depends on the fault modelling. This paper addresses the implementation of a new fault model consisted of a serial connection of the tower footing resistance and arc resistance.
Dobrijevic, Djordje M.   +3 more
core   +1 more source

Low‐Flicker‐Noise MoS2 Transistors Enabled by High‐κ Rare‐Earth Oxychlorides for Mixed‐Signal Electronics

open access: yesAdvanced Functional Materials, EarlyView.
Single‐crystalline LaOCl and GdOCl form atomically abrupt, Cl‐terminated interfaces with MoS2, enabling near‐ideal switching and suppressed flicker noise. Carrier‐number‐fluctuation analysis yields effective noise‐derived interface trap densities of 1.15–1.94 × 1010 cm−2 eV−1, approaching hexagonal boron nitride levels with high‐κ coupling.
Chanho Lee   +10 more
wiley   +1 more source

Digitally Printed Eco‐Friendly Electronic Devices

open access: yesAdvanced Functional Materials, EarlyView.
Fabrication of electronics using eco‐friendly materials through digital printing routes is a promising strategy for improving life cycle sustainability and reducing the environmental impacts of conventional manufacturing. This review highlights state‐of‐the‐art eco‐friendly materials, green ink formulations, various resource‐efficient digital printing ...
Nitheesh M. Nair   +5 more
wiley   +1 more source

Minimum detection of power transformer short circuit fault using frequency response analysis

open access: yes, 2015
The majority of mechanical deformation within power transformers is due to short circuit faults. Although, frequency response analysis (FRA) has been recently recognized as the most reliable detection tool for mechanical deformation in transformers, in ...
Ahmed Abu-Siada (23287114)   +1 more
core   +2 more sources

Design of a Short-Circuit Detection Intelligent Release Using Discrete Wavelet Algorithm

open access: yesIEEE Access, 2019
The short-circuit faults are one of the inevitable faults types in the power system. The frame circuit breaker can quickly break the transmission lines in case of the short-circuit faults to achieve the purpose of protecting the power system. At present,
Guanghai Bao, Feng Zeng, Huaiping Sun
doaj   +1 more source

Hydrogel‐Based Method for High‐Resolution Measurements of Contact Mechanics in Rapid Biological Adhesives: A Case Study in Cuttlefish Tentacle Strikes

open access: yesAdvanced Functional Materials, EarlyView.
Cuttlefish and squid can catch their prey within milliseconds using specialized tentacles and suckers. The physics of how the suckers can attach so quickly has remained a mystery given the technical challenges of studying them in vivo. In this publication, we develop a hydrogel that retains imprints of the suckers in order to estimate the forces they ...
Alexander Koehnsen   +4 more
wiley   +1 more source

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