Results 31 to 40 of about 5,346,507 (336)

A Phase-Shifted Square Wave Modulation (PS-SWM) for Modular Multilevel Converter (MMC) and DC Transformer for Medium Voltage Applications

open access: yesIEEE transactions on power electronics, 2019
In this letter, a phase-shifted square wave modulation strategy is proposed for modular multilevel converters (MMCs) as well as dc transformers for medium-voltage applications.
Ran Mo, Hui Li, Yanjun Shi
semanticscholar   +1 more source

Modified Charge Transport Model Under High-Frequency Unipolar Square Wave Voltage

open access: yesFrontiers in Materials, 2022
As the main insulation material of the power electronic transformer (PET), polyimide (PI) is easy to accumulate space charge under the continuous high-frequency pulse voltage, which will threaten the operation of PET and cause electric field distortion ...
Jianxiang Xie   +4 more
doaj   +1 more source

Electrode kinetics from a single square-wave voltammogram

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2015
A novel methodological approach for processing electrochemical data measured under conditions of square-wave voltammetry (SWV) is proposed. The methodology takes advantage of the chronoamperometric characteristics of the electrochemical system observed ...
Valentin Mirčeski   +2 more
doaj   +1 more source

The Square Root Depth Wave Equations [PDF]

open access: yes, 2009
We introduce a set of coupled equations for multilayer water waves that removes the ill-posedness of the multilayer Green-Naghdi (MGN) equations in the presence of shear.
Cotter, Colin C.   +2 more
core   +1 more source

RVB superconductors with fermionic projected entangled pair states [PDF]

open access: yes, 2014
We construct a family of simple fermionic projected entangled pair states (fPEPS) on the square lattice with bond dimension $D=3$ which are exactly hole-doped resonating valence bond (RVB) wavefunctions with short-range singlet bonds.
Cirac, J. Ignacio   +3 more
core   +4 more sources

A novel modulation method for flexible multi-state switches with shared modules

open access: yes电力工程技术, 2023
As a new type of power electronic device to replace traditional mechanical switches, the soft open point (SOP) has the advantages of fast response speed and controllable power flow.
LI Zheng   +3 more
doaj   +1 more source

Square-wave Voltammetry of Two-step Electrode Reaction

open access: yesInternational Journal of Electrochemical Science, 2014
A theory of square-wave voltammetry of two-step electrode reaction with kinetically controlled electron transfers is developed and a special case of thermodynamically unstable intermediate is analyzed.
Sebojka Komorsky-Lovric, Milivoj Lovric
doaj   +1 more source

Superrevivals in the quantum dynamics of a particle confined in a finite square well potential [PDF]

open access: yes, 1998
We examine the revival features in wave packet dynamics of a particle confined in a finite square well potential. The possibility of tunneling modifies the revival pattern as compared to an infinite square well potential.
A. M. Weiner   +29 more
core   +2 more sources

Exact Ground State of the 2D Hubbard Model at Half Filling for $U=0^{+}$ [PDF]

open access: yes, 2000
We solve analytically the $N\times N$ square lattice Hubbard model for even $N$ at half filling and weak coupling by a new approach. The exact ground state wave function provides an intriguing and appealing picture of the antiferromagnetic order. Like at
Cini   +7 more
core   +1 more source

Simulation Study of Single⁃Bubble Ultrasonic Cavitation Dynamics

open access: yesLiaoning Shiyou Huagong Daxue xuebao
The kinetic properties of single⁃bubble ultrasonic cavitation are simulated using the finite element analysis software COMSOL Multiphysics. The motion process of a single cavitation bubble driven by ultrasonic sinusoidal, square and triangular waves when
Jia SUN   +3 more
doaj   +1 more source

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