Results 11 to 20 of about 443,327 (285)

Performance of Asymmetric Electric Double Layer Capacitors — Predominant Contribution of the Negative Electrode

open access: yesAdsorption Science & Technology, 2008
Asymmetric capacitors with a non-aqueous electrolyte were constructed by using various carbons as negative and positive electrodes in order to study their performance.
Lihong Wang   +2 more
doaj   +2 more sources

Development of lead-free thin-film dielectrics for capacitor applications [PDF]

open access: yes, 2010
This PhD project aims to develop lead-free thin-film dielectric materials for fixed value, voltage tunable and high-k zipping variable capacitors using growth techniques that can be scaled for silicon batch fabrication.
Darbyshire, David Anthony
core   +7 more sources

Optimal Asymmetric Duty Modulation for Dual Active Bridge Converters with DC Blocking Capacitors

open access: yesEnergies, 2023
Aiming at the optimization of current stress with low voltage ratio and full ZVS, a control method combining variable duty cycle and phase shift was proposed based on dual active bridge (DAB) converters with DC blocking capacitors.
Peng Dai   +3 more
doaj   +1 more source

A PFC converter topology based on active power decoupling circuit with asymmetric small split capacitors

open access: yesElectronics Letters, 2022
A novel active power decoupling converter (APDC) applied in power factor correction (PFC) converter is proposed, which overcomes the problem that the DC‐link voltage ripple of small capacitor PFC converters depend heavily on the consistency of capacitors.
Chao Zhang
doaj   +1 more source

Three-Phase Trinary Asymmetric Multilevel Inverter With Single DC Source and Open-Loop Control

open access: yesIEEE Open Journal of Industry Applications, 2021
A three-phase trinary-asymmetric cascaded H-bridge multilevel inverter topology with single dc source per phase is presented in this paper. Only one of the H-bridges (called Main bridge) is fed from a dc source and all others (called auxiliary bridges ...
Rajesh Vasu   +2 more
doaj   +1 more source

Improved Symmetry of Ferroelectric Switching in HZO Based MFM Capacitors Enabled by High Pressure Annealing

open access: yesIEEE Journal of the Electron Devices Society, 2022
The interface difference between HZO and the upper and lower electrodes induced by the sequence of the process flow could lead to the general asymmetry in the structure and performance of metal-ferroelectric-metal (MFM) capacitors, which may cause ...
Qin Wang   +7 more
doaj   +1 more source

Are analysts' loss functions asymmetric? [PDF]

open access: yes, 2012
Despite displaying a statistically significant optimism bias, analysts' earnings forecasts are an important input to investors’ valuation models. Understanding the possible reasons for any bias is important if information is to be extracted from earnings
Clatworthy, Mark   +2 more
core   +5 more sources

A Control Strategy for Cascaded H-Bridge Based STATCOM with Unequal Capacitive DC Links Based on Model Predictive Method [PDF]

open access: yesمجله مدل سازی در مهندسی, 2000
Static Synchronous Compensator (STATCOM) is a shunt grid connected converter used for reactive power/current compensation in electrical networks. Owing to its advantages, cascaded H-bridge inverter with unequal capacitive dc links is utilized in STATCOM ...
Yousef Neyshabouri   +1 more
doaj   +1 more source

Mechanisms and Designs of Asymmetrical Electrochemical Capacitors [PDF]

open access: yesElectrochimica Acta, 2017
© 2017 Elsevier Ltd Different charge storage mechanisms in electrochemical energy storage devices are reviewed, including non-Faradaic capacitive, Faradaic capacitive, Faradaic non-capacitive, and their combinations. Specifically, Faradaic capacitive (pseudocapacitive) storage and Faradaic non-capacitive (Nernstian) storage are attributed to the ...
Akinwolemiwa, Bamidele   +2 more
openaire   +1 more source

Charge storage mechanism in nanoporous carbons and its consequence for electrical double layer capacitors [PDF]

open access: yes, 2010
Electrochemical capacitors, also known as supercapacitors, are energy storage devices that fill the gap between batteries and dielectric capacitors. Thanks to their unique features, they have a key role to play in energy storage and harvesting, acting ...
Gogotsi, Yury   +3 more
core   +1 more source

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