Results 111 to 120 of about 2,361 (309)

Nonlinear phenomena of the buck-boost converter analyzed by storage energy [PDF]

open access: yes, 2014
Author name used in this publication: K. W. E. ChengAuthor name used in this publication: Z. H. ShiAuthor name used in this publication: K.
Cheng, KWE, Ding, K, Shi, Z, Xu, C
core  

Modeling and Controlling Strategy of Four-Switch Buck-boost Convertor with Smooth Mode Transitions

open access: yesThe Open Electrical & Electronic Engineering Journal, 2017
Four-switch synchronous buck-boost (FSBB) converter is much suitable for battery management system for its characteristic of wide input voltage range, high efficiency, and positive voltage output. A three mode control scheme with two modulation signals and one carrier can be adopted to achieve the smooth transition among modes.
Wei-zhong Zhang   +3 more
openaire   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

ZVS Control strategy of dual active bridge DC/DC converter with triple-phase-shift modulation considering RMS current optimization

open access: yesThe Journal of Engineering, 2019
Dual active bridge (DAB) DC/DC converter is an ideal high-power bidirectional DC/DC converter with multiple control methods. In this paper, the working characteristics of the DAB converters are analysed by the example of medium power mode, in which the ...
Kai Shen   +7 more
doaj   +1 more source

2 × 2 InGaAlAs/InAlAs multiquantum well (MQW)directionalcoupler waveguide switch modules integrated with spotsize convertors

open access: yesElectronics Letters, 1994
The authors report the first ever fully packaged practical 2 × 2 InGaAlAs/InAlAs MQW waveguide switch modules integrated with newly proposed efficient spotsize convertors. The connector-to-connector insertion loss and crosstalk of switch modules are 16 and −15 dB, respectively.
K. Kawano   +4 more
openaire   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Advanced Stirling Convertor Dual Convertor Controller Testing at NASA Glenn Research Center in the Radioisotope Power Systems System Integration Laboratory [PDF]

open access: yes
NASA Glenn Research Center developed a nonnuclear representation of a Radioisotope Power System (RPS) consisting of a pair of Advanced Stirling Convertors (ASCs), Dual Convertor Controller (DCC) EMs (engineering models) 2 and 3, and associated support ...
Bell, Mark E.   +5 more
core   +4 more sources

Modular multilevel converter composite submodule topology and control

open access: yesThe Journal of Engineering, 2019
The DC-side short-circuit fault suppression of modular multilevel converter (MMC) applied to DC transmission has been a technical problem. According to the different location of cutting off fault current, this study first analyses three possible ...
Jianpo Zhang, Chang Jiang, Yanan Han
doaj   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Alternate arm modular multilevel converter energy balancing via overlap onset control

open access: yesThe Journal of Engineering, 2018
This study introduces a novel method called overlap onset control (OOC) to balance and maintain alternate arm modular multilevel converter (AAC) submodule capacitor voltages at their desired value.
Steven Howell   +2 more
doaj   +1 more source

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