Results 51 to 60 of about 416,509 (227)

The measurement of resonant electrical circuit parameters

open access: yesИзвестия высших учебных заведений. Поволжский регион:Технические науки, 2021
Background. The purpose of the study is to develop techniques for measuring three- and four-element resonant electrical circuit parameters. Materials and methods.
A.V. Svetlov, N.M. Nguyen
doaj   +1 more source

Development and Experimental Validation of a Supercapacitor Frequency Domain Model for Industrial Energy Applications Considering Dynamic Behaviour at High Frequencies

open access: yesEnergies, 2020
Supercapacitors, one of the most promising energy storage technologies for high power density industrial applications, exchange the energy mostly through power electronic converters, operating under high frequency components due to the commutation.
Gustavo Navarro   +5 more
doaj   +1 more source

Electric capacitance as nanocondensers in zigzag nanographite ribbons [PDF]

open access: yes, 2005
Electronic states in nanographite ribbons with zigzag edges are studied using the extended Hubbard model with nearest neighbor Coulomb interactions. The nearest Coulomb interactions stabilize electronic states with the opposite electric charges separated
Harigaya, Kikuo
core   +1 more source

Extraordinary Capacitance and Stability of Carbon Electrode for Electrochemical Capacitors

open access: yesElectrochemistry
To further improve the energy density and reliability of carbon based electrochemical capacitors, such as electric double-layer capacitors and lithium ion capacitors, it is necessary to increase both the electric double layer capacitance and stability of
Soshi SHIRAISHI   +3 more
doaj   +1 more source

Capacitance of Gated GaAs/AlGaAs Heterostructures Subject to In-plane Magnetic Fields

open access: yes, 1995
A detailed analysis of the capacitance of gated GaAs/AlGaAs heterostructures is presented. The nonlinear dependence of the capacitance on the gate voltage and in-plane magnetic field is discussed together with the capacitance quantum steps connected with
F. Stern   +9 more
core   +1 more source

Current Sensorless Online Capacitor Parameter Estimation Method in Buck Converters Based on Large Signal Profile Considering Magnetic Saturation

open access: yesIEEE Open Journal of Power Electronics
Large signal profiles are commonly utilized for estimating capacitor parameters in power converters, which typically requires current information. Installation of current sensors in practical power converters could be inconvenient and expensive. Existing
Xinguo Zhang   +4 more
doaj   +1 more source

Effects of phase leg reactor, submodule capacitor, number of submodules and switching frequency on harmonics in modular multilevel converters

open access: yesThe Journal of Engineering, 2019
The modular multilevel converter (M2C) will play an important role in the future especially for high-voltage and high-power applications where controllability is a key factor. Although a lot of research has been carried out on this topic, little has been
Ara Bissal, Waqas Ali, Ilknur Colak
doaj   +1 more source

Dynamic power load simulator [PDF]

open access: yes, 1973
Two independent models simulate dynamic and steady-state responses of electrical and electronic equipment under power load. One is resistance/capacitance/inductance network, and the other is variable resistance analog device.
Birnbach, S.   +2 more
core   +1 more source

Conditioning a current source using OCCII-GIC for EIT systems [PDF]

open access: yes, 2015
Multi-Frequency EIT has been developed to evaluate the permittivity spectrum of a medium using an improved Howland source. Stray capacitance reduces the output impedance, bandwidth of the data collection leading to erroneous measurements. To address this,
Falkenberg, Christian   +5 more
core   +1 more source

Capacitated vertex covering [PDF]

open access: yesJournal of Algorithms, 2003
Summary: In this paper we study the capacitated vertex cover problem, a generalization of the well-known vertex cover problem. Given a graph \(G=(V,E)\) with weights on the vertices, the goal is to cover all the edges by picking a cover of minimum weight from the vertices. When we pick a copy of a vertex, we pay the weight of the vertex and cover up to
Guha, Sudipto   +3 more
openaire   +2 more sources

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