Results 31 to 40 of about 21,033 (238)

A Boost CLLC Converter Controlled by PWM and PFM Hybrid Modulation for Photovoltaic Power Generation

open access: yesIEEE Access, 2020
When an input terminal is connected to a solar panel with a low voltage level and large power range fluctuation, a Boost type CLLC converter controlled by fixed frequency pulse width modulation (PWM) reduces the utilization of PV electric energy, and the
Zhe Shi   +3 more
doaj   +1 more source

Control and Dynamic Characteristics Analysis for the Double-Compound Axial Piston Pump Based on Working Conditions

open access: yesMachines, 2022
The periodic flow and pressure pulsation of the axial piston pump can lead to periodic vibration, noise, and even damage to various components in the hydraulic system.
Zhiyuan Sun   +3 more
doaj   +1 more source

Charge-Spin Separation in 2D Fermi Systems: Singular Interactions as Modified Commutators, and Solution of 2D Hubbard Model in Bosonized Approximation [PDF]

open access: yes, 1995
The general 2-dimensional fermion system with repulsive interactions (typified by the Hubbard Model) is bosonized, taking into account the finite on-shell forward scattering phase shift derived in earlier papers.
A. A. Abrikosov   +17 more
core   +3 more sources

Research of single phase-shift close-loop control for bi-directional full-bridge DC-DC converter

open access: yesGong-kuang zidonghua, 2014
In view of problem of low efficiency of bi-directional full-bridge DC-DC converter based on traditional single phase-shift control, the paper proposed a design scheme of bi-directional full-bridge DC-DC converter based on single phase-shift close-loop ...
YANG Xiaokang   +3 more
doaj   +1 more source

A new modulation strategy and power balance method of unsymmetrical CHB inverter

open access: yesIET Renewable Power Generation, 2021
There exist the problems of the low utilization rate of DC voltage, power imbalance and current backflow in the modulation process of traditional unsymmetrical cascaded units.
Renxi Gong   +3 more
doaj   +1 more source

Surface wave excitations and backflow effect over dense polymer brushes [PDF]

open access: yes, 2016
Polymer brushes are being increasingly used to tailor surface physicochemistry for diverse applications such as wetting, adhesion of biological objects, implantable devices and much more.
BIAGI, SOFIA   +3 more
core   +1 more source

Effect of inlet valve timing and water blending on bioethanol HCCI combustion using forced induction and residual gas trapping [PDF]

open access: yes, 2008
This is the post-print version of the final paper published in Fuel. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other ...
A. Megaritis   +5 more
core   +1 more source

Physical Meaning of the Current Vertex Corrections: DC and AC Transport Phenomena in High-Tc Superconductors

open access: yes, 2005
Famous non-Fermi liquid-like behaviors of the transport phenomena in high-Tc cuprates (Hall coefficient, magnetoresistance, thermoelectric power, Nernst coefficient, etc) are caused by the current vertex corrections in neary antiferromagnetic (AF) Fermi ...
Kontani, Hiroshi
core   +3 more sources

Unusual low-temperature thermopower in the one-dimensional Hubbard model

open access: yes, 1993
The low-temperature thermoelectric power of the repulsive-interaction one-dimensional Hubbard model is calculated using an asymptotic Bethe ansatz for holons and spinons.
A. B. Kaiser   +26 more
core   +2 more sources

An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

open access: yesEnergies, 2012
This paper proposes a novel extended-single-phase shift (ESPS) control strategy of isolated bidirectional full-bridge DC-DC converters (IBDCs) which are a promising alternative as a power electronic interface in microgrids with an additional function of ...
Xiaolong Shi, Jiuchun Jiang, Xintao Guo
doaj   +1 more source

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